485BPOS

1933 Act File No.	33-54445
1940 Act File No.	811-7193

Form N-1A

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
	Pre-Effective Amendment No.
	Post-Effective Amendment No.	55
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
	Amendment No.	56

FEDERATED INSTITUTIONAL TRUST

(Exact Name of Registrant as Specified in Charter)

Federated Investors Funds

4000 Ericsson Drive

Warrendale, PA 15086-7561

(Address of Principal Executive Offices)

(412) 288-1900

(Registrant’s Telephone Number, including Area Code)

John W. McGonigle, Esquire

Federated Investors Tower

Pittsburgh, Pennsylvania 15222-3779

(Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box):
X	immediately upon filing pursuant to paragraph (b) pursuant to paragraph (b)
	60 days after filing pursuant to paragraph (a)(1)
	on	pursuant to paragraph (a)(1)
	75 days after filing pursuant to paragraph (a)(2)
	on	pursuant to paragraph (a)(2) of Rule 485
If appropriate, check the following box:
	This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant, FEDERATED INSTITUTIONAL TRUST, certifies that it meets all of the requirements for effectiveness of this Amendment to its Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Amendment to its Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Pittsburgh and Commonwealth of Pennsylvania, on the 14th day of January, 2013.

FEDERATED INSTITUTIONAL TRUST

BY: /s/ Andrew P. Cross

Andrew P. Cross, Assistant Secretary

Pursuant to the requirements of the Securities Act of 1933, this Amendment to its Registration Statement has been signed below by the following person in the capacity and on the date indicated:

NAME	TITLE	DATE
BY: /s/ Andrew P. Cross Andrew P. Cross, Assistant Secretary	Attorney In Fact For the Persons Listed Below	January 14, 2013
John F. Donahue *	Trustee
J. Christopher Donahue *	President and Trustee (Principal Executive Officer)
Richard A. Novak*	Treasurer (Principal Financial Officer)
John F. Cunningham*	Trustee
Maureen E. Lally-Green*	Trustee
Peter E. Madden*	Trustee
Charles F. Mansfield, Jr.*	Trustee
Thomas O’Neill*	Trustee
John S. Walsh*	Trustee
*By Power of Attorney

Federated Institutional High Yield Bond Fund

A Portfolio of Federated Institutional Trust

Post-Effective Amendment No. 55

This Post-Effective Amendment is filed for the sole purpose of submitting the XBRL Interactive Data File exhibits for the Risk/Return Summary of the above-named Fund filed as part of Post-Effective Amendment No. 54 on December 27, 2012. The exhibits filed herewith do not constitute the complete publicly filed disclosure for the Fund, and should be used in conjunction with the complete prospectus for the Fund.

Exhibit List for Interactive Data File Submissions.

EX-101.INS	INSTANCE
EX-101.SCH	SCHEMA
EX-101.CAL	CALCULATION LINKBASE
EX-101.DEF	DEFINITION LINKBASE
EX-101.LAB	LABEL LINKBASE
EX-101.PRE	PRESENTATION LINKBASE

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FEDERATED INSTITUTIONAL TRUST
Prospectus Date	rr_ProspectusDate	Dec. 31, 2012
Document Creation Date	dei_DocumentCreationDate	Dec. 27, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FEDERATED INSTITUTIONAL TRUST
Prospectus Date	rr_ProspectusDate	Dec. 31, 2012
Federated Institutional High Yield Bond Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	Federated Institutional High Yield Bond Fund (the "Fund")
Objective [Heading]	rr_ObjectiveHeading	RISK/RETURN SUMMARY: INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund's investment objective is to seek high current income.
Expense [Heading]	rr_ExpenseHeading	RISK/RETURN SUMMARY: FEES AND EXPENSES
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	This table describes the fees and expenses that you may pay if you buy and hold the Fund's Institutional Shares (IS).
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Fee Waiver or Reimbursement over Assets, Date of Termination	rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination	January 1, 2014
Fee Waiver Or Reimbursement Over Assets Later Of Termination Or Next Effective Prospectus	fit5_FeeWaiverOrReimbursementOverAssetsLaterOfTerminationOrNextEffectiveProspectus	up to but not including the later of (the "Termination Date"): (a) January 1, 2014; or (b) the date of the Fund's next effective Prospectus.
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 18% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	18.00%
Expense Example [Heading]	rr_ExpenseExampleHeading	Example
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	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 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 operating expenses are as shown in the table above and remain the same. Although your actual costs and returns may be higher or lower, based on these assumptions your costs would be:
Strategy [Heading]	rr_StrategyHeading	RISK/RETURN SUMMARY: INVESTMENTS, RISKS and PERFORMANCE What are the Fund's Main Investment Strategies?
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund pursues its investment objective by investing primarily in a diversified portfolio of high yield corporate bonds (also known as "junk bonds"), including debt securities issued by U.S. or foreign businesses (including emerging market debt securities). The Fund's investment adviser ("Adviser") selects securities that it believes have attractive risk-return characteristics. The Adviser's securities selection process includes an analysis of the issuer's financial condition, business and product strength, competitive position and management expertise. The Adviser does not limit the Fund's investments to securities of a particular maturity range. The Fund may invest in derivative contracts (for example, futures contracts, option contracts and swap contracts) to implement its investment strategies as more fully described in the Fund's Prospectus. The Fund's investments are subject to credit risks, liquidity risks, risks associated with noninvestment-grade securities, risks related to the economy, interest rate risks, risks of foreign investing, currency risks, leverage risks, risks of investing in emerging market countries and risks of investing in derivative contracts and hybrid instruments, each are more fully described in the Fund's Prospectus. Because the Fund refers to high-yield investments in its name, it will notify shareholders in advance of any change in its investment policies that would enable the Fund to normally invest less than 80% of its assets in investments rated below investment-grade.
Risk [Heading]	rr_RiskHeading	What are the Main Risks of Investing in the Fund?
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	All mutual funds take investment risks. Therefore, it is possible to lose money by investing in the Fund. The primary factors that may reduce the Fund's returns include: Counterparty Credit Risk. Credit risk includes the possibility that a party to a transaction involving the Fund will fail to meet its obligations. This could cause the Fund to lose the benefit of the transaction or prevent the Fund from selling or buying other securities to implement its investment strategy. Issuer Credit Risk . It is possible that interest or principal on securities will not be paid when due. Noninvestment-grade securities generally have a higher default risk than investment-grade securities. Such non-payment or default may reduce the value of the Fund's portfolio holdings, its share price and its performance. Liquidity Risk. Liquidity of individual corporate bonds varies considerably. Low-grade corporate bonds have less liquidity than investment-grade securities, which means that it may be more difficult to sell or buy a security at a favorable price or time. Risk Associated with Noninvestment-Grade Securities. Securities rated below investment-grade may be subject to greater interest rate, credit and liquidity risks than investment-grade securities. Risk Related to the Economy. Low-grade corporate bond returns are sensitive to changes in the economy. The value of the Fund's portfolio may decline in tandem with a drop in the overall value of the stock market based on negative developments in the U.S. and global economies. Interest Rate Risk. Prices of fixed-income securities generally fall when interest rates rise. Interest rate changes have a greater effect on the price of fixed-income securities with longer durations. Duration measures the price sensitivity of a fixed-income security to changes in interest rates. Risk of Foreign Investing. Because the Fund invests in securities issued by foreign companies, the Fund's Share price may be more affected by foreign economic and political conditions, taxation policies and accounting and auditing standards than could otherwise be the case. Currency Risk. Exchange rates for currencies fluctuate daily. The value of the Fund's foreign investments and the value of the shares may be affected favorably or unfavorably by changes in currency exchange rates relative to the U.S. dollar. Eurozone Related Risk. A number of countries in the European Union (EU) have experienced, and may continue to experience, severe economic and financial difficulties. Additional EU member countries may also fall subject to such difficulties. These events could negatively affect the value and liquidity of the Fund's investments in euro-denominated securities and derivatives contracts, securities of issuers located in the EU or with significant exposure to EU issuers or countries. Leverage Risk. Leverage risk is created when an investment exposes the Fund to a level of risk that exceeds the amount invested. Risk of Investing in Emerging Market Countries. Securities issued or traded in emerging markets generally entail greater risks than securities issued or traded in developed markets. Risk of Investing in Derivative Contracts and Hybrid Instruments. Derivative contracts and hybrid instruments involve risks different from, or possibly greater than, risks associated with investing directly in securities and other traditional investments. Specific risk issues related to the use of such contracts and instruments include valuation and tax issues, increased potential for losses and/or costs to the Fund, and a potential reduction in gains to the Fund. Each of these issues is described in greater detail in this prospectus. Risk of Loss after Redemption. The Fund may also invest in trade finance loan instruments primarily by investing in other investment companies (which are not available for general investment by the public) that own those instruments, is advised by an affiliate of the Adviser and is structured as an extended payment fund. Technology Risk. Proprietary and third party data and systems are utilized to support decision making for the Fund. Data imprecision, software or other technology malfunctions, programming inaccuracies and similar circumstances may impair the performance of these systems, which may negatively affect Fund performance. The Shares offered by this Prospectus are not deposits or obligations of any bank, are not endorsed or guaranteed by any bank and are not insured or guaranteed by the U.S. government, the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Risk Lose Money [Text]	rr_RiskLoseMoney	All mutual funds take investment risks. Therefore, it is possible to lose money by investing in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	The Shares offered by this Prospectus are not deposits or obligations of any bank, are not endorsed or guaranteed by any bank and are not insured or guaranteed by the U.S. government, the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	Performance: Bar Chart and Table Risk/Return Bar Chart
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and performance table below reflects historical performance data for the Fund and are intended to help you analyze the Fund's investment risks in light of its historical returns. The bar chart shows the variability of the Fund's IS class total returns on a calendar year-by-year basis. The Average Annual Total Return table shows returns averaged over the stated periods, and includes comparative performance information. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information for the Fund is available under the "Products" section at FederatedInvestors.com or by calling 1-800-341-7400.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	The bar chart shows the variability of the Fund's IS class total returns on a calendar year-by-year basis.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	1-800-341-7400
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	FederatedInvestors.com
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results.
Bar Chart [Heading]	rr_BarChartHeading	Federated Institutional High Yield Bond Fund - IS Class
Bar Chart Narrative [Text Block]	rr_BarChartNarrativeTextBlock	The Fund's IS class total return for the nine-month period from January 1, 2012 to September 30, 2012, was 12.09%. Within the periods shown in the bar chart, the Fund's IS class highest quarterly return was 18.11% (quarter ended June 30, 2009). Its lowest quarterly return was (17.31)% (quarter ended December 31, 2008).
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Return Table
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	The stated returns assume the highest historical federal income and capital gains tax rates. These after-tax returns do not reflect the effect of any applicable state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	After-tax returns are not relevant to investors holding Shares through a 401(k) plan, an Individual Retirement Account or other tax-advantaged investment plan.
Performance Table One Class of after Tax Shown [Text]	rr_PerformanceTableOneClassOfAfterTaxShown	In addition to Return Before Taxes, Return After Taxes is shown for the Fund's IS class to illustrate the effect of federal taxes on Fund returns.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	In addition to Return Before Taxes, Return After Taxes is shown for the Fund's IS class to illustrate the effect of federal taxes on Fund returns. Actual after-tax returns depend on each investor's personal tax situation, and are likely to differ from those shown. After-tax returns are calculated using a standard set of assumptions. The stated returns assume the highest historical federal income and capital gains tax rates. These after-tax returns do not reflect the effect of any applicable state and local taxes. After-tax returns are not relevant to investors holding Shares through a 401(k) plan, an Individual Retirement Account or other tax-advantaged investment plan. (For the Period Ended December 31, 2011)
Federated Institutional High Yield Bond Fund | IS
Risk/Return:	rr_RiskReturnAbstract
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, as applicable)	rr_MaximumDeferredSalesChargeOverOther	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends (and other Distributions) (as a percentage of offering price)	rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther	none
Redemption Fee (as a percentage of amount redeemed, if applicable)	rr_RedemptionFeeOverRedemption	2.00%
Exchange Fee	rr_ExchangeFeeOverRedemption	none
Management Fee	rr_ManagementFeesOverAssets	0.40%
Distribution (12b-1) Fee	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.19%
Acquired Fund Fees and Expenses	rr_AcquiredFundFeesAndExpensesOverAssets	0.01%
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	0.60%
Fee Waivers and/or Expense Reimbursements	rr_FeeWaiverOrReimbursementOverAssets	0.10%	[1]
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements	rr_NetExpensesOverAssets	0.50%
1 Year	rr_ExpenseExampleYear01	61
3 Years	rr_ExpenseExampleYear03	192
5 Years	rr_ExpenseExampleYear05	335
10 Years	rr_ExpenseExampleYear10	750
2003	rr_AnnualReturn2003	23.15%
2004	rr_AnnualReturn2004	11.22%
2005	rr_AnnualReturn2005	3.61%
2006	rr_AnnualReturn2006	11.28%
2007	rr_AnnualReturn2007	3.80%
2008	rr_AnnualReturn2008	(23.62%)
2009	rr_AnnualReturn2009	49.50%
2010	rr_AnnualReturn2010	14.78%
2011	rr_AnnualReturn2011	5.68%
Year to Date Return, Label	rr_YearToDateReturnLabel	The Fund's IS class total return for the nine-month period
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Sep. 30, 2012
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	12.09%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	highest quarterly return
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	18.11%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	lowest quarterly return
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Dec. 31, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(17.31%)
1 Year	rr_AverageAnnualReturnYear01	5.68%
5 Years	rr_AverageAnnualReturnYear05	7.53%
Start of Performance	rr_AverageAnnualReturnSinceInception	10.04%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 01, 2002
Federated Institutional High Yield Bond Fund | Return After Taxes on Distributions | IS
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.48%
5 Years	rr_AverageAnnualReturnYear05	4.16%
Start of Performance	rr_AverageAnnualReturnSinceInception	6.47%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 01, 2002
Federated Institutional High Yield Bond Fund | Return After Taxes on Distributions and Sale of Fund Shares | IS
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	3.84%
5 Years	rr_AverageAnnualReturnYear05	4.40%
Start of Performance	rr_AverageAnnualReturnSinceInception	6.56%
Inception Date	rr_AverageAnnualReturnInceptionDate	Nov. 01, 2002
Federated Institutional High Yield Bond Fund | Barclays U.S. Corporate High Yield 2% Issuer Capped Index (reflects no deduction for fees, expenses or taxes)
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	4.96%	[2]
5 Years	rr_AverageAnnualReturnYear05	7.74%	[2]
Start of Performance	rr_AverageAnnualReturnSinceInception	10.71%	[2]
Federated Institutional High Yield Bond Fund | Lipper High Current Yield Funds Average
Risk/Return:	rr_RiskReturnAbstract
1 Year	rr_AverageAnnualReturnYear01	2.83%	[3]
5 Years	rr_AverageAnnualReturnYear05	5.48%	[3]
Start of Performance	rr_AverageAnnualReturnSinceInception	8.84%	[3]

[1] The Adviser and its affiliates have voluntarily agreed to waive their fees and/or reimburse expenses so that total annual fund operating expenses (excluding Acquired Fund Fees and Expenses) paid by the Fund's IS class (after the voluntary waivers and/or reimbursements) will not exceed 0.49% (the "Fee Limit") up to but not including the later of (the "Termination Date"): (a) January 1, 2014; or (b) the date of the Fund's next effective Prospectus. While the Adviser and its affiliates currently do not anticipate terminating or increasing these arrangements prior to the Termination Date, these arrangements may only be terminated or the Fee Limit increased prior to the Termination Date with the agreement of the Fund's Board of Trustees.

[2] Barclays Capital changed the name of the BHY 2% ICI Index from " Barclays Capital U.S. Corporate High Yiield 2% Issuer Capped Index" to "Barclays U.S. Corporate High Yield 2% Issuer Capped Index." The Barclays U.S. Corporate High Yield 2% Issuer Capped Index is a broad based market Index.

[3] Lipper figures represent the average of the total returns reported by all the mutual funds designated by Lipper Inc. as falling into the respective categories indicated. They do not reflect sales charges.

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Federated Institutional High Yield Bond Fund

Federated Institutional High Yield Bond Fund (the "Fund")

RISK/RETURN SUMMARY: INVESTMENT OBJECTIVE

The Fund's investment objective is to seek high current income.

RISK/RETURN SUMMARY: FEES AND EXPENSES

This table describes the fees and expenses that you may pay if you buy and hold the Fund's Institutional Shares (IS).

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees	Federated Institutional High Yield Bond Fund IS
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, as applicable)	none
Maximum Sales Charge (Load) Imposed on Reinvested Dividends (and other Distributions) (as a percentage of offering price)	none
Redemption Fee (as a percentage of amount redeemed, if applicable)	2.00%
Exchange Fee	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses		Federated Institutional High Yield Bond Fund IS
Management Fee		0.40%
Distribution (12b-1) Fee		none
Other Expenses		0.19%
Acquired Fund Fees and Expenses		0.01%
Total Annual Fund Operating Expenses		0.60%
Fee Waivers and/or Expense Reimbursements	[1]	0.10%
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements		0.50%

Example

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 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 operating expenses are as shown in the table above and remain the same. Although your actual costs and returns may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	Federated Institutional High Yield Bond Fund IS
1 Year	61
3 Years	192
5 Years	335
10 Years	750

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund Shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 18% of the average value of its portfolio.

RISK/RETURN SUMMARY: INVESTMENTS, RISKS and PERFORMANCE

What are the Fund's Main Investment Strategies?

The Fund pursues its investment objective by investing primarily in a diversified portfolio of high yield corporate bonds (also known as "junk bonds"), including debt securities issued by U.S. or foreign businesses (including emerging market debt securities). The Fund's investment adviser ("Adviser") selects securities that it believes have attractive risk-return characteristics. The Adviser's securities selection process includes an analysis of the issuer's financial condition, business and product strength, competitive position and management expertise. The Adviser does not limit the Fund's investments to securities of a particular maturity range.

The Fund may invest in derivative contracts (for example, futures contracts, option contracts and swap contracts) to implement its investment strategies as more fully described in the Fund's Prospectus.

The Fund's investments are subject to credit risks, liquidity risks, risks associated with noninvestment-grade securities, risks related to the economy, interest rate risks, risks of foreign investing, currency risks, leverage risks, risks of investing in emerging market countries and risks of investing in derivative contracts and hybrid instruments, each are more fully described in the Fund's Prospectus.

Because the Fund refers to high-yield investments in its name, it will notify shareholders in advance of any change in its investment policies that would enable the Fund to normally invest less than 80% of its assets in investments rated below investment-grade.

What are the Main Risks of Investing in the Fund?

All mutual funds take investment risks. Therefore, it is possible to lose money by investing in the Fund. The primary factors that may reduce the Fund's returns include:

• Counterparty Credit Risk. Credit risk includes the possibility that a party to a transaction involving the Fund will fail to meet its obligations. This could cause the Fund to lose the benefit of the transaction or prevent the Fund from selling or buying other securities to implement its investment strategy.

• Issuer Credit Risk . It is possible that interest or principal on securities will not be paid when due. Noninvestment-grade securities generally have a higher default risk than investment-grade securities. Such non-payment or default may reduce the value of the Fund's portfolio holdings, its share price and its performance.

• Liquidity Risk. Liquidity of individual corporate bonds varies considerably. Low-grade corporate bonds have less liquidity than investment-grade securities, which means that it may be more difficult to sell or buy a security at a favorable price or time.

• Risk Associated with Noninvestment-Grade Securities. Securities rated below investment-grade may be subject to greater interest rate, credit and liquidity risks than investment-grade securities.

• Risk Related to the Economy. Low-grade corporate bond returns are sensitive to changes in the economy. The value of the Fund's portfolio may decline in tandem with a drop in the overall value of the stock market based on negative developments in the U.S. and global economies.

• Interest Rate Risk. Prices of fixed-income securities generally fall when interest rates rise. Interest rate changes have a greater effect on the price of fixed-income securities with longer durations. Duration measures the price sensitivity of a fixed-income security to changes in interest rates.

• Risk of Foreign Investing. Because the Fund invests in securities issued by foreign companies, the Fund's Share price may be more affected by foreign economic and political conditions, taxation policies and accounting and auditing standards than could otherwise be the case.

• Currency Risk. Exchange rates for currencies fluctuate daily. The value of the Fund's foreign investments and the value of the shares may be affected favorably or unfavorably by changes in currency exchange rates relative to the U.S. dollar.

• Eurozone Related Risk. A number of countries in the European Union (EU) have experienced, and may continue to experience, severe economic and financial difficulties. Additional EU member countries may also fall subject to such difficulties. These events could negatively affect the value and liquidity of the Fund's investments in euro-denominated securities and derivatives contracts, securities of issuers located in the EU or with significant exposure to EU issuers or countries.

• Leverage Risk. Leverage risk is created when an investment exposes the Fund to a level of risk that exceeds the amount invested.

• Risk of Investing in Emerging Market Countries. Securities issued or traded in emerging markets generally entail greater risks than securities issued or traded in developed markets.

• Risk of Investing in Derivative Contracts and Hybrid Instruments. Derivative contracts and hybrid instruments involve risks different from, or possibly greater than, risks associated with investing directly in securities and other traditional investments. Specific risk issues related to the use of such contracts and instruments include valuation and tax issues, increased potential for losses and/or costs to the Fund, and a potential reduction in gains to the Fund. Each of these issues is described in greater detail in this prospectus.

• Risk of Loss after Redemption. The Fund may also invest in trade finance loan instruments primarily by investing in other investment companies (which are not available for general investment by the public) that own those instruments, is advised by an affiliate of the Adviser and is structured as an extended payment fund.

• Technology Risk. Proprietary and third party data and systems are utilized to support decision making for the Fund. Data imprecision, software or other technology malfunctions, programming inaccuracies and similar circumstances may impair the performance of these systems, which may negatively affect Fund performance.

The Shares offered by this Prospectus are not deposits or obligations of any bank, are not endorsed or guaranteed by any bank and are not insured or guaranteed by the U.S. government, the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.

Performance: Bar Chart and Table

Risk/Return Bar Chart

The bar chart and performance table below reflects historical performance data for the Fund and are intended to help you analyze the Fund's investment risks in light of its historical returns. The bar chart shows the variability of the Fund's IS class total returns on a calendar year-by-year basis. The Average Annual Total Return table shows returns averaged over the stated periods, and includes comparative performance information. The Fund's performance will fluctuate, and past performance (before and after taxes) is not necessarily an indication of future results. Updated performance information for the Fund is available under the "Products" section at FederatedInvestors.com or by calling 1-800-341-7400.

Federated Institutional High Yield Bond Fund - IS Class

The Fund's IS class total return for the nine-month period from January 1, 2012 to September 30, 2012, was 12.09%.

Within the periods shown in the bar chart, the Fund's IS class highest quarterly return was 18.11% (quarter ended June 30, 2009). Its lowest quarterly return was (17.31)% (quarter ended December 31, 2008).

Average Annual Total Return Table

In addition to Return Before Taxes, Return After Taxes is shown for the Fund's IS class to illustrate the effect of federal taxes on Fund returns. Actual after-tax returns depend on each investor's personal tax situation, and are likely to differ from those shown. After-tax returns are calculated using a standard set of assumptions. The stated returns assume the highest historical federal income and capital gains tax rates. These after-tax returns do not reflect the effect of any applicable state and local taxes. After-tax returns are not relevant to investors holding Shares through a 401(k) plan, an Individual Retirement Account or other tax-advantaged investment plan.

(For the Period Ended December 31, 2011)

Average Annual Total Returns Federated Institutional High Yield Bond Fund		1 Year	5 Years	Start of Performance	Inception Date
IS		5.68%	7.53%	10.04%	Nov. 01, 2002
IS Return After Taxes on Distributions		2.48%	4.16%	6.47%	Nov. 01, 2002
IS Return After Taxes on Distributions and Sale of Fund Shares		3.84%	4.40%	6.56%	Nov. 01, 2002
Barclays U.S. Corporate High Yield 2% Issuer Capped Index (reflects no deduction for fees, expenses or taxes)	[1]	4.96%	7.74%	10.71%
Lipper High Current Yield Funds Average	[2]	2.83%	5.48%	8.84%

[1] The Adviser and its affiliates have voluntarily agreed to waive their fees and/or reimburse expenses so that total annual fund operating expenses (excluding Acquired Fund Fees and Expenses) paid by the Fund's IS class (after the voluntary waivers and/or reimbursements) will not exceed 0.49% (the "Fee Limit") up to but not including the later of (the "Termination Date"): (a) January 1, 2014; or (b) the date of the Fund's next effective Prospectus. While the Adviser and its affiliates currently do not anticipate terminating or increasing these arrangements prior to the Termination Date, these arrangements may only be terminated or the Fee Limit increased prior to the Termination Date with the agreement of the Fund's Board of Trustees.

[1] Barclays Capital changed the name of the BHY 2% ICI Index from " Barclays Capital U.S. Corporate High Yiield 2% Issuer Capped Index" to "Barclays U.S. Corporate High Yield 2% Issuer Capped Index." The Barclays U.S. Corporate High Yield 2% Issuer Capped Index is a broad based market Index.

[2] Lipper figures represent the average of the total returns reported by all the mutual funds designated by Lipper Inc. as falling into the respective categories indicated. They do not reflect sales charges.

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Document and Entity Information	12 Months Ended
	Dec. 31, 2012
Risk/Return:
Document Type	485BPOS
Document Period End Date	Oct. 31, 2012
Registrant Name	FEDERATED INSTITUTIONAL TRUST
Central Index Key	0000925723
Amendment Flag	false
Document Creation Date	Dec. 27, 2012
Document Effective Date	Dec. 28, 2012
Prospectus Date	Dec. 31, 2012