0000828806 2011-12-22 2012-12-21 0000828806 aimtst1:S000000176Member aimtst1:InvestorClassMember aimtst1:C000000400Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000173Member aimtst1:InstitutionalClassMember 2011-12-22 2012-12-21 0000828806 aimtst1:S000000174Member aimtst1:InstitutionalClassMember 2011-12-22 2012-12-21 0000828806 aimtst1:S000000173Member aimtst1:InstitutionalClassMember aimtst1:C000029748Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000176Member aimtst1:InvestorClassMember 2011-12-22 2012-12-21 0000828806 aimtst1:S000000174Member aimtst1:InstitutionalClassMember aimtst1:C000029749Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000174Member aimtst1:InvestorClassMember 2011-12-22 2012-12-21 0000828806 aimtst1:S000000173Member aimtst1:InvestorClassMember aimtst1:C000000397Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000174Member aimtst1:InvestorClassMember aimtst1:C000000398Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000176Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000176Member aimtst1:InstitutionalClassMember aimtst1:C000029750Member 2011-12-22 2012-12-21 0000828806 aimtst1:S000000173Member aimtst1:InvestorClassMember 2011-12-22 2012-12-21 0000828806 aimtst1:S000000176Member aimtst1:InstitutionalClassMember 2011-12-22 2012-12-21 pure iso4217:USD 2012-12-21 485BPOS AIM TREASURERS SERIES TRUST (INVESCO TREASURER'S SERIES TRUST) 0000828806 2012-12-18 2012-12-21 false 2012-08-31 0.0025 0 0 0.0025 0.0018 Investment Objective(s) The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. Investment Objective(s) The Fund’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. Example. Principal Investment Strategies of the Fund Principal Risks of Investing in the Fund 0.0025 Performance Information 0 0 0.0025 0.0018 Average Annual Total Returns (for the periods ended December 31, 2011) Annual Total Returns 0 0 18 73 134 311 18 73 Shareholder Fees (fees paid directly from your investment) 134 Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) 311 This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.         The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.         Although your actual costs may be higher or lower, based on these assumptions, your costs would be: The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in securities that (1) pay interest that is excluded from gross income for federal income tax purposes, and (2) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax.         The Fund will limit investments to those securities that are First Tier Securities (defined below) at the time of purchase.         The Fund invests only in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies, instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities.         Other securities held by the fund may be structured with demand features which have the effect of shortening the security’s maturity.         The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Fund’s Adviser pursuant to guidelines approved by the Fund’s Board of Trustees, and must be an “Eligible Security” as defined under applicable regulations. First Tier Securities generally means Eligible Securities rated within the highest short-term rating category, an unrated security of comparable quality as determined by the Adviser under the supervision of the Board of Trustees, U.S. Government Securities as defined by applicable regulations, and securities issued by other registered money market funds.         The Fund may invest up to 20% of its total assets in money market instruments that may be subject to federal taxes, including Treasury securities, repurchase agreements, bankers’ acceptances, commercial paper, U.S. dollar-denominated foreign securities and master notes.         The Fund may also invest in securities, whether or not considered foreign securities, which carry foreign credit exposure.         In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.         The portfolio structure is driven to some extent by the supply and availability of municipal obligations. The portfolio managers manage liquidity, for instance, by trading in daily and weekly variable-rate demand notes.         The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change. 0.0007 0.0174 0.0241 0.009 0.0037 0.0056 0.03 0.0492 0.0509 0.0229 0.0028 0.0003 0.0002 As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:         Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.         Counterparty Risk. Counterparty risk is the risk that the other party to the contract will not fulfill its contractual obligations, which may cause losses or additional costs to the Fund.         Credit Risk. The issuer of instruments in which the Fund invests may be unable to meet interest and/or principal payments, thereby causing its instruments to decrease in value and lowering the issuer’s credit rating.         Foreign Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest.         Foreign Securities Risk. The value of the Fund’s foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulties when enforcing obligations, decreased liquidity, and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies.         Industry Focus Risk. To the extent the Fund invests in securities issued or guaranteed by companies in the banking and financial services industries, the Fund’s performance will depend on the overall condition of those industries, which may be affected by the following factors: the supply of short-term financing, changes in government regulation and interest rates, and the overall economy.         Interest Rate Risk. Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.         Liquidity Risk. The Fund may hold illiquid securities that it may be unable to sell at the preferred time or price and could lose its entire investment in such securities.         Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results.         Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and interest rate fluctuations.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities.         Municipal Securities Risk. The Fund may invest in municipal securities. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell it. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.         Reinvestment Risk. Reinvestment risk is the risk that a bond’s cash flows (coupon income and principal repayment) will be reinvested at an interest rate below that on the original bond.         Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of the instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights. Institutional Class year-to-date (ended September 30, 2012): 0.02% Best Quarter (ended June 30, 2007 and September 30, 2007): 0.89% Worst Quarter (ended December 31, 2011): 0.00% 0.0504 0.0527 0.0289 0.0046 www.invesco.com/us <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualTotalReturnsPremierU.S.GovernmentMoneyPortfolioBarChart column period compact * ~</div> 0.0009 The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. 0.0007 The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. Shareholder Fees (fees paid directly from your investment) Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Example. 0 0 This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.         The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.         Although your actual costs may be higher or lower, based on these assumptions, your costs would be: Principal Investment Strategies of the Fund Shareholder Fees (fees paid directly from your investment) Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.          The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.          Although your actual costs may be higher or lower, based on these assumptions, your costs would be: The Fund invests primarily in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) securities issued by the U.S. Government or its agencies; (ii) bankers’ acceptances, certificates of deposit, and time deposits from U.S. and foreign banks; (iii) repurchase agreements; (iv) commercial paper; (v) municipal securities; and (vi) master notes.          The Fund may engage in repurchase agreement transactions that are collateralized by cash or government securities. In addition, it may engage in repurchase agreement transactions that are collateralized by non government securities such as equity securities and securities that are rated investment grade and below investment grade by nationally recognized statistical rating organizations or unrated securities of comparable quality.          The Fund will limit investments to those securities that are First Tier Securities (defined below) at the time of purchase.          The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with the Security and Exchange Commission (SEC) rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Fund’s Adviser pursuant to guidelines approved by the Fund’s Board of Trustees, and must be an “Eligible Security” as defined under applicable regulations. First Tier Securities generally means Eligible Securities rated within the highest short-term rating category, an unrated security of comparable quality as determined by the Adviser under the supervision of the Board of Trustees, U.S. Government Securities as defined by applicable regulations, and securities issued by other registered money market funds.          The Fund invests from time to time in U.S. dollar-denominated foreign securities. The Fund may also invest in securities, whether or not considered foreign securities, which carry foreign credit exposure.          In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.          The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change. As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:          Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.          Counterparty Risk. Counterparty risk is the risk that the other party to the contract will not fulfill its contractual obligations, which may cause losses or additional costs to the Fund.          Credit Risk. The issuer of instruments in which the Fund invests may be unable to meet interest and/or principal payments, thereby causing its instruments to decrease in value and lowering the issuer’s credit rating.          Foreign Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest.          Foreign Securities Risk. The value of the Fund’s foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulties when enforcing obligations, decreased liquidity, and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies.          Industry Focus Risk. To the extent the Fund invests in securities issued or guaranteed by companies in the banking and financial services industries, the Fund’s performance will depend on the overall condition of those industries, which may be affected by the following factors: the supply of short-term financing, changes in government regulation and interest rates, and the overall economy.          Interest Rate Risk. Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.          Liquidity Risk. The Fund may hold illiquid securities that it may be unable to sell at the preferred time or price and could lose its entire investment in such securities.          Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results.          Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and interest rate fluctuations.          Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities.          Municipal Securities Risk. The Fund may invest in municipal securities. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell it. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.          Reinvestment Risk. Reinvestment risk is the risk that a bond’s cash flows (coupon income and principal repayment) will be reinvested at an interest rate below that on the original bond.          Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.          U.S. Government Obligations Risk. The Fund may invest in obligations issued by U.S. Government agencies and instrumentalities that may receive varying levels of support from the government, which could affect the Fund’s ability to recover should they default.          Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of the instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights. 0.0025 0 0 0.0025 <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualTotalReturnsPremierPortfolioInstitutionalClassBarChart column period compact * ~</div> The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. government or its agencies and instrumentalities (Agency Securities), and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above. Agency Securities may be supported by (i) the full faith and credit of the U.S. Treasury; (ii) the right of the issuer to borrow from the U.S. Treasury; (iii) the discretionary authority of the U.S. government to purchase certain obligations of the agency or instrumentality; or (iv) the credit of the agency or instrumentality. At the present time, the fund has no current intention to invest in securities other than direct obligations of the U.S. Treasury, Agency Securities, and repurchase agreements secured by such obligations.         The Fund will limit investments to those securities that are First Tier Securities (defined below) at the time of purchase.         The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Fund’s Adviser pursuant to guidelines approved by the Fund’s Board of Trustees, and must be an “Eligible Security” as defined under applicable regulations. First Tier Securities generally means Eligible Securities rated within the highest short-term rating category, an unrated security of comparable quality as determined by the Adviser under the supervision of the Board of Trustees, U.S. Government Securities as defined by applicable regulations, and securities issued by other registered money market funds.         In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.         The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change. As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:         Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.         Interest Rate Risk. Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.         Liquidity Risk. The Fund may hold illiquid securities that it may be unable to sell at the preferred time or price and could lose its entire investment in such securities.         Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results.         Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and interest rate fluctuations.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities.         Reinvestment Risk. Reinvestment risk is the risk that a bond’s cash flows (coupon income and principal repayment) will be reinvested at an interest rate below that on the original bond.         Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.         U.S. Government Obligations Risk. The Fund may invest in obligations issued by U.S. Government agencies and instrumentalities that may receive varying levels of support from the government, which could affect the Fund’s ability to recover should they default. Investment Objective(s) The Fund’s investment objective is to provide tax-exempt income consistent with preservation of capital and liquidity. 0 Principal Risks of Investing in the Fund Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. 26 80 2005-02-25 141 0 Performance Information 0 0 The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s website at www.invesco.com/us. <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierU.S.GovernmentMoneyPortfolioInstitutionalClass column period compact * ~</div> 318 <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierPortfolioInstitutionalClass column period compact * ~</div> 0.0025 Investor Class year-to-date (ended September 30, 2012): 0.02% Best Quarter (ended December 31, 2006): 1.30% Worst Quarter (ended March 31, 2010 through December 31, 2011): 0.01% 0 0 0.0025 0.0025 0 0 <div style="display:none">~ http://www.invesco.com/role/ScheduleExpenseExampleTransposedPremierPortfolioInstitutionalClass column period compact * ~</div> 0.0025 0.0018 0.0005 0 0.0127 0 0.0171 <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualFundOperatingExpensesPremierPortfolioInstitutionalClass column period compact * ~</div> Example. 0.0025 0 Investor Class year-to-date 2012-09-30 2005-02-25 0.0002 Best Quarter 0 2006-12-31 0.013 Worst Quarter 0 0.0025 2011-12-31 0.0001 0 0.0018 0.0332 0.0351 0.0233 0.0041 0.0011 0.0005 <div style="display:none">~ http://www.invesco.com/role/ScheduleShareholderFeesPremierPortfolioInstitutionalClass column period compact * ~</div> -0.0007 18 73 134 311 This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.         The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.         Although your actual costs may be higher or lower, based on these assumptions, your costs would be: Principal Investment Strategies of the Fund Fund Summaries - PREMIER TAX-EXEMPT PORTFOLIO 0.0008 <div style="display:none">~ http://www.invesco.com/role/ScheduleShareholderFeesPremierTax-ExemptPortfolioInstitutionalClass column period compact * ~</div> 0.0174 0.0207 Principal Risks of Investing in the Fund <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualFundOperatingExpensesPremierTax-ExemptPortfolioInstitutionalClass column period compact * ~</div> Average Annual Total Returns (for the periods ended December 31, 2011) 18 December 31, 2013 73 The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. 134 www.invesco.com/us 311 Investment Objective(s) December 31, 2013 The Fund’s investment objective is to provide current income consistent with preservation of capital and liquidity. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Fees and Expenses of the Fund         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. Annual Total Returns Institutional Class year-to-date (ended September 30, 2012): 0.09% Best Quarter (ended September 30, 2007): 1.33% Worst Quarter (ended March 31, 2010 and September 30, 2011): 0.01%         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. Shareholder Fees (fees paid directly from your investment) An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. Investor Class year-to-date (ended September 30, 2012): 0.02% Best Quarter (ended June 30, 2007 and September 30, 2007): 0.89% Worst Quarter (ended June 30, 2011 through December 31, 2011): 0.01% www.invesco.com/us The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Principal Investment Strategies of the Fund Principal Risks of Investing in the Fund Principal Investment Strategies of the Fund Principal Risks of Investing in the Fund 0.0509 0.0229 0.0028 0.0129 0.0003 0.0097 Average Annual Total Returns (for the periods ended December 31, 2011) 0.0108 0.0002 0.0229 0.0332 The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s website at www.invesco.com/us. 0.0351 0.0233 0.0041 0.0011 0.0005 Institutional Class year-to-date This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.         The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.         Although your actual costs may be higher or lower, based on these assumptions, your costs would be: 2012-09-30 0.0009 Best Quarter 2007-09-30 0.0133 <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierTax-ExemptPortfolioInstitutionalClass column period compact * ~</div> Worst Quarter 0.0001 The Fund invests primarily in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) securities issued by the U.S. Government or its agencies; (ii) bankers’ acceptances, certificates of deposit, and time deposits from U.S. and foreign banks; (iii) repurchase agreements; (iv) commercial paper; (v) municipal securities; and (vi) master notes.          The Fund may engage in repurchase agreement transactions that are collateralized by cash or government securities. In addition, it may engage in repurchase agreement transactions that are collateralized by non government securities such as equity securities and securities that are rated investment grade and below investment grade by nationally recognized statistical rating organizations or unrated securities of comparable quality.         The Fund will limit investments to those securities that are First Tier Securities (defined below) at the time of purchase.          The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with the Security and Exchange Commission (SEC) rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Fund’s Adviser pursuant to guidelines approved by the Fund’s Board of Trustees, and must be an “Eligible Security” as defined under applicable regulations. First Tier Securities generally means Eligible Securities rated within the highest short-term rating category, an unrated security of comparable quality as determined by the Adviser under the supervision of the Board of Trustees, U.S. Government Securities as defined by applicable regulations, and securities issued by other registered money market funds.         The Fund invests from time to time in U.S. dollar-denominated foreign securities. The Fund may also invest in securities, whether or not considered foreign securities, which carry foreign credit exposure.          In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.          The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change. 26 80 141 318 <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualTotalReturnsPremierTax-ExemptPortfolioInstitutionalClassBarChart column period compact * ~</div> Institutional Class year-to-date 2012-09-30 0.0002 Best Quarter 2007-09-30 0.0129 Worst Quarter 2011-12-31 0 1988-04-27 0.0005 0.0127 0.0153 Average Annual Total Returns (for the periods ended December 31, 2011) <div style="display:none">~ http://www.invesco.com/role/ScheduleExpenseExampleTransposedPremierTax-ExemptPortfolioInstitutionalClass column period compact * ~</div> Fund Summaries - PREMIER U.S. GOVERNMENT MONEY PORTFOLIO The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s website at www.invesco.com/us. <div style="display:none">~ http://www.invesco.com/role/ScheduleShareholderFeesPremierU.S.GovernmentMoneyPortfolio column period compact * ~</div> Performance Information The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s website at www.invesco.com/us. As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:         Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.         Counterparty Risk. Counterparty risk is the risk that the other party to the contract will not fulfill its contractual obligations, which may cause losses or additional costs to the Fund.         Credit Risk. The issuer of instruments in which the Fund invests may be unable to meet interest and/or principal payments, thereby causing its instruments to decrease in value and lowering the issuer’s credit rating.         Foreign Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest.         Foreign Securities Risk. The value of the Fund’s foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulties when enforcing obligations, decreased liquidity, and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies.         Industry Focus Risk. To the extent the Fund invests in securities issued or guaranteed by companies in the banking and financial services industries, the Fund’s performance will depend on the overall condition of those industries, which may be affected by the following factors: the supply of short-term financing, changes in government regulation and interest rates, and the overall economy.          Interest Rate Risk. Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.         Liquidity Risk. The Fund may hold illiquid securities that it may be unable to sell at the preferred time or price and could lose its entire investment in such securities.          Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results.         Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and interest rate fluctuations.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities.        Municipal Securities Risk. The Fund may invest in municipal securities. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell it. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.         Reinvestment Risk. Reinvestment risk is the risk that a bond’s cash flows (coupon income and principal repayment) will be reinvested at an interest rate below that on the original bond.         Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value. These risks are magnified to the extent that a repurchase agreement is secured by securities other than cash or U.S. Government securities.         U.S. Government Obligations Risk. The Fund may invest in obligations issued by U.S. Government agencies and instrumentalities that may receive varying levels of support from the government, which could affect the Fund’s ability to recover should they default.        Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of the instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights. <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualFundOperatingExpensesPremierU.S.GovernmentMoneyPortfolio column period compact * ~</div> An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. Average Annual Total Returns (for the periods ended December 31, 2011) The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. www.invesco.com/us <div style="display:none">~ http://www.invesco.com/role/ScheduleExpenseExampleTransposedPremierU.S.GovernmentMoneyPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierU.S.GovernmentMoneyPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleShareholderFeesPremierTax-ExemptPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleExpenseExampleTransposedPremierTax-ExemptPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualTotalReturnsPremierTax-ExemptPortfolioBarChart column period compact * ~</div> Investor Class year-to-date (ended September 30, 2012): 0.09% Best Quarter (ended September 30, 2007): 1.33% Worst Quarter (ended March 31, 2010 and September 30, 2011): 0.01% The Fund’s investment objective is a high level of current income consistent with the preservation of capital and the maintenance of liquidity. <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierTax-ExemptPortfolio column period compact * ~</div> -0.0007 -0.0007 The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in securities that (1) pay interest that is excluded from gross income for federal income tax purposes, and (2) do not produce income that will be considered to be an item of preference for purposes of the alternative minimum tax.         The Fund will limit investments to those securities that are First Tier Securities (defined below) at the time of purchase.         The Fund invests only in high-quality U.S. dollar-denominated short-term debt obligations, including: (i) municipal securities; (ii) tax-exempt commercial paper; and (iii) cash equivalents. These securities may have credit and liquidity enhancements provided by banks, insurance companies or other financial institutions. Municipal securities include debt obligations of states, territories and possessions of the United States and the District of Columbia, their political subdivisions, agencies, instrumentalities, authorities thereof, and multi-state agencies, issued to obtain funds for various public purposes. Municipal lease obligations, synthetic municipal securities and certain types of industrial revenue bonds are treated as municipal securities.         Other securities held by the fund may be structured with demand features which have the effect of shortening the security’s maturity.         The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Fund’s Adviser pursuant to guidelines approved by the Fund’s Board of Trustees, and must be an “Eligible Security” as defined under applicable regulations. First Tier Securities generally means Eligible Securities rated within the highest short-term rating category, an unrated security of comparable quality as determined by the Adviser under the supervision of the Board of Trustees, U.S. Government Securities as defined by applicable regulations, and securities issued by other registered money market funds.         The Fund may invest up to 20% of its total assets in money market instruments that may be subject to federal taxes, including Treasury securities, repurchase agreements, bankers’ acceptances, commercial paper, U.S. dollar-denominated foreign securities and master notes.         The Fund may also invest in securities, whether or not considered foreign securities, which carry foreign credit exposure.         In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.         The portfolio structure is driven to some extent by the supply and availability of municipal obligations. The portfolio managers manage liquidity, for instance, by trading in daily and weekly variable-rate demand notes.         The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change. December 31, 2013         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. www.invesco.com/us Investor Class year-to-date As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:         Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.         Counterparty Risk. Counterparty risk is the risk that the other party to the contract will not fulfill its contractual obligations, which may cause losses or additional costs to the Fund.         Credit Risk. The issuer of instruments in which the Fund invests may be unable to meet interest and/or principal payments, thereby causing its instruments to decrease in value and lowering the issuer’s credit rating.         Foreign Credit Exposure Risk. U.S. dollar-denominated securities carrying foreign credit exposure may be affected by unfavorable political, economic or governmental developments that could affect payments of principal and interest.         Foreign Securities Risk. The value of the Fund’s foreign investments may be adversely affected by political and social instability, changes in economic or taxation policies, difficulties when enforcing obligations, decreased liquidity, and increased volatility. Foreign companies may be subject to less regulation resulting in less publicly available information about the companies.         Industry Focus Risk. To the extent the Fund invests in securities issued or guaranteed by companies in the banking and financial services industries, the Fund’s performance will depend on the overall condition of those industries, which may be affected by the following factors: the supply of short-term financing, changes in government regulation and interest rates, and the overall economy.         Interest Rate Risk. Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.         Liquidity Risk. The Fund may hold illiquid securities that it may be unable to sell at the preferred time or price and could lose its entire investment in such securities.         Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results.         Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and interest rate fluctuations.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities.         Municipal Securities Risk. The Fund may invest in municipal securities. Constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives, and the issuer’s regional economic conditions may affect the municipal security’s value, interest payments, repayment of principal and the Fund’s ability to sell it. Failure of a municipal security issuer to comply with applicable tax requirements may make income paid thereon taxable, resulting in a decline in the security’s value. In addition, there could be changes in applicable tax laws or tax treatments that reduce or eliminate the current federal income tax exemption on municipal securities or otherwise adversely affect the current federal or state tax status of municipal securities.         Reinvestment Risk. Reinvestment risk is the risk that a bond’s cash flows (coupon income and principal repayment) will be reinvested at an interest rate below that on the original bond.         Variable-Rate Demand Notes Risk. The absence of an active secondary market for certain variable and floating rate notes could make it difficult to dispose of the instruments, and a portfolio could suffer a loss if the issuer defaults during periods in which a portfolio is not entitled to exercise its demand rights. 2012-09-30 0.0009 <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualFundOperatingExpensesPremierTax-ExemptPortfolio column period compact * ~</div> Best Quarter 2007-09-30 0.0133 Worst Quarter 2011-09-30 0.0001 -0.0007 Investor Class year-to-date 2012-09-30 0.0002 Best Quarter 2007-09-30 0.0155 0.0089 0.0103 Example. Worst Quarter 0.0127 2011-12-31 0.0317 0.0001 0.0504 Fund Summaries - PREMIER PORTFOLIO 0.0527 0.029 0.0046 0.0009 0.0008 Investment Objective(s) 1988-04-26 December 31, 2013         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. www.invesco.com/us Institutional Class year-to-date 2012-09-30 0.0002 Best Quarter 2007-09-30 0.0089 Worst Quarter 2011-12-31 0 Fund Summaries - PREMIER TAX-EXEMPT PORTFOLIO Shareholder Fees (fees paid directly from your investment) Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s website at www.invesco.com/us. 2011-09-30 <div style="display:none">~ http://www.invesco.com/role/ScheduleShareholderFeesPremierPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualFundOperatingExpensesPremierPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleExpenseExampleTransposedPremierPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualTotalReturnsPremierPortfolioBarChart column period compact * ~</div> Performance Information <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierPortfolio column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleShareholderFeesPremierU.S.GovernmentMoneyPortfolioInstitutionalClass column period compact * ~</div> Fund Summaries - PREMIER PORTFOLIO This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. Example. <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualFundOperatingExpensesPremierU.S.GovernmentMoneyPortfolioInstitutionalClass column period compact * ~</div> Performance Information Annual Total Returns <div style="display:none">~ http://www.invesco.com/role/ScheduleExpenseExampleTransposedPremierU.S.GovernmentMoneyPortfolioInstitutionalClass column period compact * ~</div> <div style="display:none">~ http://www.invesco.com/role/ScheduleAnnualTotalReturnsPremierU.S.GovernmentMoneyPortfolioInstitutionalClassBarChart column period compact * ~</div> Annual Total Returns 1991-04-26 0.0002 0.0152 0.0173 0.0002 0.0152 0.0186 2006-06-28 Annual Total Returns <div style="display:none">~ http://www.invesco.com/role/ScheduleAverageAnnualTotalReturnsTransposedPremierUSGovernmentMoneyPortfolioInstitutionalClass column period compact * ~</div> Fund Summaries - PREMIER U.S. GOVERNMENT MONEY PORTFOLIO This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.         The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same.         Although your actual costs may be higher or lower, based on these assumptions, your costs would be: The Fund’s investment objective is a high level of current income consistent with the preservation of capital and the maintenance of liquidity. This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. Shareholder Fees (fees paid directly from your investment) Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) The Fund invests under normal circumstances at least 80% of its net assets (plus any borrowings for investment purposes) in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. government or its agencies and instrumentalities (Agency Securities), and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above. Agency Securities may be supported by (i) the full faith and credit of the U.S. Treasury; (ii) the right of the issuer to borrow from the U.S. Treasury; (iii) the discretionary authority of the U.S. government to purchase certain obligations of the agency or instrumentality; or (iv) the credit of the agency or instrumentality. At the present time, the fund has no current intention to invest in securities other than direct obligations of the U.S. Treasury, Agency Securities, and repurchase agreements secured by such obligations.         The Fund will limit investments to those securities that are First Tier Securities (defined below) at the time of purchase.         The Fund is a money market fund that seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. The Fund invests in conformity with SEC rules and regulation requirements for money market funds for the quality, maturity, diversification and liquidity of investments. The Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days, and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 under the Investment Company Act of 1940 of no more than 120 days. Each investment must be determined to present minimal credit risks by the Fund’s Adviser pursuant to guidelines approved by the Fund’s Board of Trustees, and must be an “Eligible Security” as defined under applicable regulations. First Tier Securities generally means Eligible Securities rated within the highest short-term rating category, an unrated security of comparable quality as determined by the Adviser under the supervision of the Board of Trustees, U.S. Government Securities as defined by applicable regulations, and securities issued by other registered money market funds.         In selecting securities for the Fund’s portfolio, the portfolio managers focus on securities that offer safety, liquidity, and a competitive yield. The Adviser conducts a credit analysis of each potential issuer prior to the purchase of its securities.         The portfolio managers normally hold portfolio securities to maturity, but may sell a security when they deem it advisable, such as when market or credit factors materially change. As with any mutual fund investment, loss of money is a risk of investing. An investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The risks associated with an investment in the Fund can increase during times of significant market volatility. The principal risks of investing in the Fund are:         Cash/Cash Equivalents Risk. Holding cash or cash equivalents may negatively affect performance.         Interest Rate Risk. Interest rate risk refers to the risk that bond prices generally fall as interest rates rise; conversely, bond prices generally rise as interest rates fall. Specific bonds differ in their sensitivity to changes in interest rates depending on their individual characteristics, including duration.         Liquidity Risk. The Fund may hold illiquid securities that it may be unable to sell at the preferred time or price and could lose its entire investment in such securities.         Management Risk. The investment techniques and risk analysis used by the Fund’s portfolio managers may not produce the desired results.         Market Risk. The prices of and the income generated by the Fund’s securities may decline in response to, among other things, investor sentiment, general economic and market conditions, regional or global instability, and interest rate fluctuations.         Money Market Fund Risk. Although the Fund seeks to preserve the value of your investment at $1.00 per share, you may lose money by investing in the Fund. The share price of money market funds can fall below the $1.00 share price. You should not rely on or expect the Fund’s adviser or its affiliates to enter into support agreements or take other actions to maintain the Fund’s $1.00 share price. The credit quality of the Fund’s holdings can change rapidly in certain markets, and the default of a single holding could have an adverse impact on the Fund’s share price. The Fund’s share price can also be negatively affected during periods of high redemption pressures and/or illiquid markets. Further regulation could impact the way the Fund is managed, possibly negatively impacting its return. Additionally, the Fund’s yield will vary as the short-term securities in its portfolio mature or are sold and the proceeds are reinvested in other securities.         Reinvestment Risk. Reinvestment risk is the risk that a bond’s cash flows (coupon income and principal repayment) will be reinvested at an interest rate below that on the original bond.         Repurchase Agreement Risk. If the seller of a repurchase agreement defaults or otherwise does not fulfill its obligations, the Fund may incur delays and losses arising from selling the underlying securities, enforcing its rights, or declining collateral value.         U.S. Government Obligations Risk. The Fund may invest in obligations issued by U.S. Government agencies and instrumentalities that may receive varying levels of support from the government, which could affect the Fund’s ability to recover should they default. Institutional Class year-to-date (ended September 30, 2012): 0.02% Best Quarter (ended September 30, 2007): 1.29% Worst Quarter (ended June 30, 2011 through December 31, 2011): 0.00% Average Annual Total Returns (for the periods ended December 31, 2011) Performance Information Investment Objective(s) Fees and Expenses of the Fund Example. Principal Investment Strategies of the Fund Principal Risks of Investing in the Fund The bar chart and performance table provide an indication of the risks of investing in the Fund. The bar chart shows changes in the performance of the Fund from year to year as of December 31. The Fund’s past performance (before and after taxes) is not necessarily an indication of its future performance. Updated performance information is available on the Fund’s website at www.invesco.com/us. Annual Total Returns As with any mutual fund investment, loss of money is a risk of investing. As with any mutual fund investment, loss of money is a risk of investing. As with any mutual fund investment, loss of money is a risk of investing. As with any mutual fund investment, loss of money is a risk of investing. As with any mutual fund investment, loss of money is a risk of investing. As with any mutual fund investment, loss of money is a risk of investing. Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed, through at least December 31, 2013, to waive advisory fees equal to 0.07% of the average daily net assets of Premier U.S. Government Money Portfolio. Fee waivers have been restated to reflect this agreement. Unless the Board of Trustees and Invesco mutually agree to amend or continue the fee waiver agreement, it will terminate on December 31, 2013. Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed, through at least December 31, 2013, to waive advisory fees equal to 0.07% of the average daily net assets of Premier Portfolio. Fee waivers have been restated to reflect this agreement. Unless the Board of Trustees and Invesco mutually agree to amend or continue the fee waiver agreement, it will terminate on December 31, 2013. Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed, through at least December 31, 2013, to waive advisory fees equal to 0.07% of the average daily net assets of Premier Portfolio. Fee waivers have been restated to reflect this agreement. Unless the Board of Trustees and Invesco mutually agree to amend or continue the fee waiver agreement, it will terminate on December 31, 2013. Invesco Advisers, Inc. (Invesco or the Adviser) has contractually agreed, through at least December 31, 2013, to waive advisory fees equal to 0.07% of the average daily net assets of Premier U.S. Government Money Portfolio. Fee waivers have been restated to reflect this agreement. Unless the Board of Trustees and Invesco mutually agree to amend or continue the fee waiver agreement, it will terminate on December 31, 2013.