485BPOS

As filed with the Securities and Exchange Commission on June 17, 2013

Securities Act File No. 333-141111

Investment Company Act File No. 811-22025

U.S. SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

Registration Statement Under The Securities Act Of 1933	x
Pre-Effective Amendment No.	¨
Post-Effective Amendment No. 34	x
and/or	x
Registration Statement Under The Investment Company Act Of 1940	x
Amendment No. 35 (Check appropriate box or boxes)	x

ING SEPARATE PORTFOLIOS TRUST

(Exact Name of Registrant Specified in Charter)

7337 E. Doubletree Ranch Road, Suite 100

Scottsdale, AZ 85258

(Address of Principal Executive Offices)

Registrant’s Telephone Number, Including Area Code: (800) 992-0180

Huey P. Falgout, Jr.	With copies to:
ING Investments, LLC	Jeffrey S. Puretz, Esq.
7337 E. Doubletree Ranch Road, Suite 100	Dechert, LLP
Scottsdale, AZ 85258	1900 K Street, N.W.
(Name and Address of Agent for Service)	Washington, DC 20006

It is proposed that this filing will become effective (check appropriate box):

x	Immediately upon filing pursuant to paragraph (b)	¨	on (date) pursuant to paragraph (b)
¨	60 days after filing pursuant to paragraph (a)(1)	¨	on (date) pursuant to paragraph (a)(1)
¨	75 days after filing pursuant to paragraph (a)(2)	¨	on (date) pursuant to paragraph (a)(2) of Rule 485
If appropriate, check the following box:
¨	This post-effective amendment designated a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the “1933 Act”), and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all the requirements for effectiveness of this Post-Effective Amendment No. 34 to its Registration Statement on Form N-1A pursuant to Rule 485(b) under the 1933 Act and has duly caused this Post-Effective Amendment No. 34 to its Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Scottsdale and State of Arizona on the 17th day of June, 2013.

	ING SEPARATE PORTFOLIOS TRUST
By:	/s/ Huey P. Falgout, Jr.
	Huey P. Falgout, Jr.   Secretary

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

SIGNATURE	TITLE	DATE
	President, Chief Executive	June 17, 2013
Shaun P. Mathews*	Officer and Interested Director
	Senior Vice President and	June 17, 2013
Todd Modic*	Chief/Principal Financial Officer
	Director	June 17, 2013
Colleen D. Baldwin*
	Director	June 17, 2013
John V. Boyer*
	Director	June 17, 2013
Patricia Chadwick*
	Director	June 17, 2013
Albert E. DePrince Jr.*
	Director	June 17, 2013
Peter S. Drotch*
	Director	June 17, 2013
J. Michael Earley*
	Director	June 17, 2013
Martin J. Gavin*
	Director	June 17, 2013
Russell H. Jones*
	Director	June 17, 2013
Patrick W. Kenny*
	Director	June 17, 2013
Joseph E. Obermeyer*

	Director	June 17, 2013
Sheryl K. Pressler*
	Director	June 17, 2013
Roger B. Vincent*

*By:	/s/ Huey P. Falgout, Jr.
	Huey P. Falgout, Jr.
	Attorney-in-Fact**

** Powers of attorney for Todd Modic and each Director dated May 22, 2013 were filed as an attachment to Post-Effective Amendment No. 32 to the Registrant’s Form N-1A Registration Statement on May 30, 2013 and incorporated herein by reference.

EXHIBIT INDEX

Exhibit Number	Exhibit Description
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	ING Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2013
Document Creation Date	dei_DocumentCreationDate	May 31, 2013

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	ING Separate Portfolios Trust
Prospectus Date	rr_ProspectusDate	May 31, 2013
ING Investment Grade Credit Fund
Risk/Return:	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	ING Investment Grade Credit Fund (formerly, ING SPorts Core Fixed Income Fund)
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The Fund seeks to maximize total return. Total return is a combination of income and capital appreciation.
Expense [Heading]	rr_ExpenseHeading	FEES AND EXPENSES OF THE FUND
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund.
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 you pay each year as a % of the value of your investment
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	Portfolio Turnover % of average value of portfolio
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 transactions costs and may mean higher taxes if you are investing in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Expense Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 27% of the average value of its portfolio.
Portfolio Turnover, Rate	rr_PortfolioTurnoverRate	27.00%
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	Other Expenses are based on estimated amounts for the current fiscal year.
Expenses Restated to Reflect Current [Text]	rr_ExpensesRestatedToReflectCurrent	Expense ratios have been adjusted to reflect current contractual rates.
Expense Example [Heading]	rr_ExpenseExampleHeading	Expense Example $
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	The Example is intended to help you compare the cost of investing in shares of the Fund with the costs of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated. The Example show costs if you sold (redeemed) your shares at the end of the period or continued to hold them. The Example also assumes that your investment had 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:
Expense Example Closing [Text Block]	rr_ExpenseExampleClosingTextBlock	The Example reflects applicable expense limitation agreements and/or waivers in effect, if any, for the one-year period and the first year of the three-, five-, and ten-year periods.
Strategy [Heading]	rr_StrategyHeading	PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in investment-grade fixed-income securities. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Investment-grade fixed-income securities are securities rated at least BBB- by Standard & Poor's Ratings Services, Baa3 by Moody's Investors Service, Inc., BBB- by Fitch Ratings, or have an equivalent rating by a nationally recognized statistical rating organization, or are deemed by the Adviser to be of comparable quality if unrated. The Fund may concentrate its portfolio investments under certain circumstances. Generally, the Fund will not invest in a security if, after the investment, more than 25% of its total assets would be invested in any one industry or group of industries, provided that the Fund may invest between 25% and 35%of its total assets (or such other percentage to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder ("1940 Act")) in the securities of any one industry group or group of industries, if at the time of investment, that industry or group of industries represents 20% or more of the Fund's primary benchmark index. The Fund's primary benchmark index is the Barclays U.S. Corporate Index. As of April 30, 2013, the primary benchmark index was concentrated in the banking industry. The securities that the Fund may invest in include, but are not limited to, the following: fixed-income securities issued by U.S. and foreign entities that are denominated in U.S. or foreign currencies, including, but not limited to, collateralized debt obligations, collateralized loan obligations, convertible bonds, collateralized mortgage obligations and U.S. and foreign mortgage-backed and asset-backed fixed-income securities; debt obligations that are denominated in U.S. or foreign currencies and issued or guaranteed by the U.S. government and foreign governments and their agencies and instrumentalities; preferred stocks; money market instruments; and municipal bonds. Generally, the Adviser maintains a dollar-weighted average duration between three and ten years for the Fund. Duration is the most commonly used measure of risk in fixed-income investment as it incorporates multiple features of the fixed-income instrument ( e.g. , yield, coupon, maturity, etc.) into one number. Duration is a measure of sensitivity of the price of a fixed-income instrument to a change in interest rates. Duration is a weighted average of the times that interest payments and the final return of principal are received. The weights are the amounts of the payments discounted by the yield-to-maturity of the fixed-income instrument. Duration is expressed as a number of years. The bigger the duration number, the greater the interest-rate risk or reward for the fixed-income instrument prices. For example, the price of a bond with an average duration of five years would be expected to fall approximately 5% if interest rates rose by one percentage point. Conversely, the price of a bond with an average duration of five years would be expected to rise approximately 5% if interest rates drop by one percentage point. The Fund may also engage in dollar roll transactions, repurchase agreements and reverse repurchase agreements, options, futures and forward contracts involving securities, securities indices, foreign currencies, interest rates, and swap agreements, including credit default swaps. The Fund typically uses derivatives to reduce exposure to other risks, such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Fund. The Adviser believes that relationships between the drivers of fixed income returns change over time and that recognizing this is key to managing of fixed income assets. Therefore, the Adviser employs a dynamic investment process that balances top-down macro economic considerations and fundamental bottom-up analysis during the steps of its investment process - sector allocation, security selection, duration and yield curve management. This includes leveraging proprietary qualitative analysis along with quantitative tools throughout the portfolio construction process. The Fund may also invest in other investment companies, including exchange-traded funds, to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder ("1940 Act"). The Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into opportunities believed to be more promising, among others. The Fund may lend portfolio securities on a short-term or long-term basis, up to 331 / 3 % of its total assets.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	You could lose money on an investment in the Fund. Any of the following risks, among others, could affect Fund performance or cause the Fund to lose money or to underperform market averages of other funds. Company   The price of a given company's stock could decline or underperform for many reasons including, among others, poor management, financial problems, or business challenges. If a company declares bankruptcy or becomes insolvent, its stock could become worthless. Concentration   As a result of the Fund "concentrating," as that term is defined in the 1940 Act, its assets in the securities of a particular industry or group of industries or single country or region, the Fund may be subject to greater market fluctuations than a fund that has securities representing a broader range of investment alternatives. If securities in which the Fund concentrates fall out of favor, the Fund could underperform funds that have greater diversification. Convertible Securities   Convertible securities are securities that are convertible into or exercisable for common stocks at a stated price or rate. Convertible securities are subject to the usual risks associated with debt securities, such as interest rate and credit risk. In addition, because convertible securities react to changes in the value of the stocks into which they convert, they are subject to market risk. Credit   Prices of bonds and other debt instruments can fall if the issuer's actual or perceived financial health deteriorates, whether because of broad economic or issuer-specific reasons. In certain cases, the issuer could be late in paying interest or principal, or could fail to pay altogether. Credit Default Swaps   The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. As a buyer of the swap, the Fund pays a fee to protect against the risk that a security held by the Fund will default. As a seller of the swap, the Fund receives payment(s) in return for its obligation to pay the counterparty an agreed upon value of a security in the event of a default of the security issuer. Credit default swaps are particularly subject to counterparty, credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk free. Currency   To the extent that the Fund invests directly in foreign (non-U.S.) currencies or in securities denominated in, or that trade in, foreign (non-U.S.) currencies, it is subject to the risk that those foreign (non-U.S.) currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency being hedged. Derivative Instruments   Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying securities, credit risk with respect to the counterparty, risk of loss due to changes in interest rates and liquidity risk. The use of certain derivatives may also have a leveraging effect which may increase the volatility of the Fund and reduce its returns. Derivatives may not perform as expected, so the Fund may not realize the intended benefits. When used for hedging, the change in value of a derivative may not correlate as expected with the currency, security or other risk being hedged. In addition, given their complexity, derivatives expose the Fund to the risk of improper valuation. Foreign Investments   Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region. Interest Rate   With bonds and other fixed rate debt instruments, a rise in interest rates generally causes values to fall; conversely, values generally rise as interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. In the case of inverse securities, the interest rate generally will decrease when the market rate of interest to which the inverse security is indexed decreases. As of the date of this Prospectus, interest rates in the United States are at or near historic lows, which may increase the Fund's exposure to risks associated with rising interest rates. Investment Model   The manager's proprietary model may not adequately allow for existing or unforeseen market factors or the interplay between such factors. Liquidity   If a security is illiquid, the Fund might be unable to sell the security at a time when the Fund's manager might wish to sell, and the security could have the effect of decreasing the overall level of the Fund's liquidity. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, which could vary from the amount the Fund could realize upon disposition. The Fund may make investments that become less liquid in response to market developments or adverse investor perception. The Fund could lose money if it cannot sell a security at the time and price that would be most beneficial to the Fund. Market   Stock prices may be volatile and are affected by the real or perceived impacts of such factors as economic conditions and political events. Stock markets tend to be cyclical, with periods when stock prices generally rise and periods when stock prices generally decline. Any given stock market segment may remain out of favor with investors for a short or long period of time, and stocks as an asset class may underperform bonds or other asset classes during some periods. Additionally, legislative, regulatory or tax policies or developments in these areas may adversely impact the investment techniques available to a manager, add to Fund costs and impair the ability of the Fund to achieve its investment objectives. Mortgage- and/or Asset-Backed Securities   Defaults on or the low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities held by the Fund may impair the value of the securities. There may be limitations on the enforceability of any security interest granted with respect to those underlying assets. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of fixed-income securities. Municipal Obligations   The municipal market in which the Fund invests is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities. Other Investment Companies   The main risk of investing in other investment companies, including exchange-traded funds, is the risk that the value of the securities underlying an investment company might decrease. Because the Fund may invest in other investment companies, you will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund. Prepayment and Extension   Prepayment risk is the risk that principal on mortgages or other loan obligations underlying a security may be repaid prior to the stated maturity date, which may reduce the market value of the security and the anticipated yield-to-maturity. Extension risk is the risk that an issuer will exercise its right to repay principal on an obligation held by the Fund later than expected, which may decrease the value of the obligation and prevent the Fund from investing expected repayment proceeds in securities paying yields higher than the yields paid by the securities that were expected to be repaid. Securities Lending   Securities lending involves two primary risks: "investment risk" and "borrower default risk." Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security in a timely manner. Sovereign Debt   These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected. U.S. Government Securities and Obligations   U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Risk Lose Money [Text]	rr_RiskLoseMoney	You could lose money on an investment in the Fund.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	PERFORMANCE INFORMATION
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The following information is intended to help you understand the risks of investing in the Fund. Because Class R6 shares of the Fund had not commenced operations as of the calendar year ended December 31, 2012, the following bar chart shows the changes in the Fund’s Class SMA shares’ performance from year to year, and the table compares the Fund’s Class SMA shares’ performance to the performance of a broad-based securities market index/indices for the same period. Class R6 shares and Class SMA shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. The Fund’s performance information reflects applicable fee waivers and/or expense limitations in effect during the period presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. The bar chart shows the performance of the Fund’s Class SMA shares, but does not reflect the impact of contingent deferred sales charges. If it did, returns would be lower than those shown. The Fund’s past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to www.INGFunds.com/literature or call 1-800-992-0180.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	the following bar chart shows the changes in the Fund’s Class SMA shares’ performance from year to year, and the table compares the Fund’s Class SMA shares’ performance to the performance of a broad-based securities market index/indices for the same period.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Class R6 shares of the Fund had not commenced operations as of the calendar year ended December 31, 2012
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	1-800-992-0180
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.INGFunds.com/literature
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	The Fund’s past performance (before and after taxes) is no guarantee of future results.
Bar Chart [Heading]	rr_BarChartHeading	Calendar Year Total Returns (as of December 31 of each year)
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	The bar chart shows the performance of the Fund’s Class SMA shares, but does not reflect the impact of contingent deferred sales charges. If it did, returns would be lower than those shown.
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best quarter: 2nd, 2009, 7.52% and Worst quarter: 3rd, 2008, (4.76)% The Fund's Class SMA shares' year-to-date total return as of March 31, 2013: (0.03)%
Bar Chart, Returns for Class Not Offered in Prospectus [Text]	rr_BarChartReturnsForClassNotOfferedInProspectus	Class R6 shares and Class SMA shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities.
Performance Table Heading	rr_PerformanceTableHeading	Average Annual Total Returns% (for the periods ended December 31, 2012)
Performance Table Market Index Changed	rr_PerformanceTableMarketIndexChanged	On November 16, 2012, the Fund changed its primary benchmark index from the BoA/ML 1-10 Index to the Barclays U.S. Corporate Index because the Barclays U.S. Corporate Index is considered by the adviser to be a more appropriate benchmark index reflecting the types of securities in which the Fund now invests.
Index No Deduction for Fees, Expenses, Taxes [Text]	rr_IndexNoDeductionForFeesExpensesTaxes	The index returns do not reflect deductions for fees, expenses, or taxes.
Performance Table Uses Highest Federal Rate	rr_PerformanceTableUsesHighestFederalRate	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred	rr_PerformanceTableNotRelevantToTaxDeferred	Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
Performance Table Explanation after Tax Higher	rr_PerformanceTableExplanationAfterTaxHigher	In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
Performance Table Narrative	rr_PerformanceTableNarrativeTextBlock	After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.
ING Investment Grade Credit Fund | Class R6
Risk/Return:	rr_RiskReturnAbstract
Maximum sales charge (load) as a % of offering price	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge as a % of purchase or sales price, whichever is less	rr_MaximumDeferredSalesChargeOverOther	none
Management Fee	rr_ManagementFeesOverAssets	0.40%	[1]
Distribution and/or Shareholder Services (12b-1) Fees	rr_DistributionAndService12b1FeesOverAssets	none
Administrative Services Fee	rr_Component1OtherExpensesOverAssets	0.10%	[1]
Other Expenses	rr_OtherExpensesOverAssets	1.16%	[2]
Total Annual Fund Operating Expenses	rr_ExpensesOverAssets	1.66%
1 Yr	rr_ExpenseExampleYear01	169
3 Yrs	rr_ExpenseExampleYear03	523
5 Yrs	rr_ExpenseExampleYear05	902
10 Yrs	rr_ExpenseExampleYear10	1,965
1 Yr	rr_ExpenseExampleNoRedemptionYear01	169
3 Yrs	rr_ExpenseExampleNoRedemptionYear03	523
5 Yrs	rr_ExpenseExampleNoRedemptionYear05	902
10 Yrs	rr_ExpenseExampleNoRedemptionYear10	1,965
ING Investment Grade Credit Fund | Class SMA
Risk/Return:	rr_RiskReturnAbstract
2003	rr_AnnualReturn2003
2004	rr_AnnualReturn2004
2005	rr_AnnualReturn2005
2006	rr_AnnualReturn2006
2007	rr_AnnualReturn2007
2008	rr_AnnualReturn2008	(2.06%)
2009	rr_AnnualReturn2009	17.46%
2010	rr_AnnualReturn2010	7.11%
2011	rr_AnnualReturn2011	5.54%
2012	rr_AnnualReturn2012	8.13%
Year to Date Return, Label	rr_YearToDateReturnLabel	year-to-date total return
Bar Chart, Year to Date Return, Date	rr_BarChartYearToDateReturnDate	Mar. 31, 2013
Bar Chart, Year to Date Return	rr_BarChartYearToDateReturn	(0.03%)
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	Best quarter:
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Jun. 30, 2009
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	7.52%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	Worst quarter:
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Sep. 30, 2008
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	(4.76%)
1 Yr	rr_AverageAnnualReturnYear01	8.13%
5 Yrs	rr_AverageAnnualReturnYear05	7.05%
10 Yrs	rr_AverageAnnualReturnYear10
since inception	rr_AverageAnnualReturnSinceInception	7.54%
Inception Date	rr_AverageAnnualReturnInceptionDate	Jun. 08, 2007
ING Investment Grade Credit Fund | After tax on distributions | Class SMA
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	6.80%
5 Yrs	rr_AverageAnnualReturnYear05	5.00%
10 Yrs	rr_AverageAnnualReturnYear10
since inception	rr_AverageAnnualReturnSinceInception	5.49%
ING Investment Grade Credit Fund | After tax on distributions with sale | Class SMA
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	5.34%
5 Yrs	rr_AverageAnnualReturnYear05	4.87%
10 Yrs	rr_AverageAnnualReturnYear10
since inception	rr_AverageAnnualReturnSinceInception	5.26%
ING Investment Grade Credit Fund | Barclays U.S. Corporate Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	9.82%	[3],[4]
5 Yrs	rr_AverageAnnualReturnYear05	7.87%	[3],[4]
10 Yrs	rr_AverageAnnualReturnYear10		[3],[4]
since inception	rr_AverageAnnualReturnSinceInception	7.64%	[3],[4],[5]
ING Investment Grade Credit Fund | BoA/ML 1-10 Index
Risk/Return:	rr_RiskReturnAbstract
1 Yr	rr_AverageAnnualReturnYear01	9.44%	[3],[4]
5 Yrs	rr_AverageAnnualReturnYear05	6.90%	[3],[4]
10 Yrs	rr_AverageAnnualReturnYear10		[3],[4]
since inception	rr_AverageAnnualReturnSinceInception	6.80%	[3],[4],[5]

[1] Expense ratios have been adjusted to reflect current contractual rates.

[2] Other Expenses are based on estimated amounts for the current fiscal year.

[3] The index returns do not reflect deductions for fees, expenses, or taxes.

[4] On November 16, 2012, the Fund changed its primary benchmark index from the BoA/ML 1-10 Index to the Barclays U.S. Corporate Index because the Barclays U.S. Corporate Index is considered by the adviser to be a more appropriate benchmark index reflecting the types of securities in which the Fund now invests.

[5] Reflects index performance since the date closest to inception for which data is available.

XML

ING Investment Grade Credit Fund

ING Investment Grade Credit Fund (formerly, ING SPorts Core Fixed Income Fund)

INVESTMENT OBJECTIVE

The Fund seeks to maximize total return. Total return is a combination of income and capital appreciation.

FEES AND EXPENSES OF THE FUND

These tables describe 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

Shareholder Fees	Maximum sales charge (load) as a % of offering price	Maximum deferred sales charge as a % of purchase or sales price, whichever is less
ING Investment Grade Credit Fund Class R6	none	none

Annual Fund Operating Expenses
Expenses you pay each year as a % of the value of your investment

Annual Fund Operating Expenses		ING Investment Grade Credit Fund Class R6
Management Fee	[1]	0.40%
Distribution and/or Shareholder Services (12b-1) Fees		none
Administrative Services Fee	[1]	0.10%
Other Expenses	[2]	1.16%
Total Annual Fund Operating Expenses		1.66%

Expense Example $

The Example is intended to help you compare the cost of investing in shares of the Fund with the costs of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated. The Example show costs if you sold (redeemed) your shares at the end of the period or continued to hold them. The Example also assumes that your investment had 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:

Expense Example (USD $)	1 Yr	3 Yrs	5 Yrs	10 Yrs
ING Investment Grade Credit Fund Class R6	169	523	902	1,965

Expense Example, No Redemption (USD $)	1 Yr	3 Yrs	5 Yrs	10 Yrs
ING Investment Grade Credit Fund Class R6	169	523	902	1,965

The Example reflects applicable expense limitation agreements and/or waivers in effect, if any, for the one-year period and the first year of the three-, five-, and ten-year periods.

Portfolio Turnover % of average value of portfolio

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 transactions costs and may mean higher taxes if you are investing in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Expense Example, affect the Fund’s performance.

During the most recent fiscal year, the Fund’s portfolio turnover rate was 27% of the average value of its portfolio.

PRINCIPAL INVESTMENT STRATEGIES

Under normal market conditions, the Fund invests at least 80% of its net assets (plus borrowings for investment purposes) in investment-grade fixed-income securities. The Fund will provide shareholders with at least 60 days' prior notice of any change in this investment policy. Investment-grade fixed-income securities are securities rated at least BBB- by Standard & Poor's Ratings Services, Baa3 by Moody's Investors Service, Inc., BBB- by Fitch Ratings, or have an equivalent rating by a nationally recognized statistical rating organization, or are deemed by the Adviser to be of comparable quality if unrated.

The Fund may concentrate its portfolio investments under certain circumstances. Generally, the Fund will not invest in a security if, after the investment, more than 25% of its total assets would be invested in any one industry or group of industries, provided that the Fund may invest between 25% and 35%of its total assets (or such other percentage to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder ("1940 Act")) in the securities of any one industry group or group of industries, if at the time of investment, that industry or group of industries represents 20% or more of the Fund's primary benchmark index. The Fund's primary benchmark index is the Barclays U.S. Corporate Index. As of April 30, 2013, the primary benchmark index was concentrated in the banking industry.

The securities that the Fund may invest in include, but are not limited to, the following:

• fixed-income securities issued by U.S. and foreign entities that are denominated in U.S. or foreign currencies, including, but not limited to, collateralized debt obligations, collateralized loan obligations, convertible bonds, collateralized mortgage obligations and U.S. and foreign mortgage-backed and asset-backed fixed-income securities;

• debt obligations that are denominated in U.S. or foreign currencies and issued or guaranteed by the U.S. government and foreign governments and their agencies and instrumentalities;

• preferred stocks;

• money market instruments; and

• municipal bonds.

Generally, the Adviser maintains a dollar-weighted average duration between three and ten years for the Fund. Duration is the most commonly used measure of risk in fixed-income investment as it incorporates multiple features of the fixed-income instrument ( e.g. , yield, coupon, maturity, etc.) into one number. Duration is a measure of sensitivity of the price of a fixed-income instrument to a change in interest rates. Duration is a weighted average of the times that interest payments and the final return of principal are received. The weights are the amounts of the payments discounted by the yield-to-maturity of the fixed-income instrument. Duration is expressed as a number of years. The bigger the duration number, the greater the interest-rate risk or reward for the fixed-income instrument prices. For example, the price of a bond with an average duration of five years would be expected to fall approximately 5% if interest rates rose by one percentage point. Conversely, the price of a bond with an average duration of five years would be expected to rise approximately 5% if interest rates drop by one percentage point.

The Fund may also engage in dollar roll transactions, repurchase agreements and reverse repurchase agreements, options, futures and forward contracts involving securities, securities indices, foreign currencies, interest rates, and swap agreements, including credit default swaps. The Fund typically uses derivatives to reduce exposure to other risks, such as interest rate or currency risk, to substitute for taking a position in the underlying asset, and/or to enhance returns in the Fund.

The Adviser believes that relationships between the drivers of fixed income returns change over time and that recognizing this is key to managing of fixed income assets. Therefore, the Adviser employs a dynamic investment process that balances top-down macro economic considerations and fundamental bottom-up analysis during the steps of its investment process - sector allocation, security selection, duration and yield curve management. This includes leveraging proprietary qualitative analysis along with quantitative tools throughout the portfolio construction process.

The Fund may also invest in other investment companies, including exchange-traded funds, to the extent permitted under the Investment Company Act of 1940, as amended, and the rules, regulations, and exemptive orders thereunder ("1940 Act").

The Adviser may sell securities for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into opportunities believed to be more promising, among others.

The Fund may lend portfolio securities on a short-term or long-term basis, up to 33¹ / ₃ % of its total assets.

PRINCIPAL RISKS

You could lose money on an investment in the Fund. Any of the following risks, among others, could affect Fund performance or cause the Fund to lose money or to underperform market averages of other funds.

Company   The price of a given company's stock could decline or underperform for many reasons including, among others, poor management, financial problems, or business challenges. If a company declares bankruptcy or becomes insolvent, its stock could become worthless.

Concentration   As a result of the Fund "concentrating," as that term is defined in the 1940 Act, its assets in the securities of a particular industry or group of industries or single country or region, the Fund may be subject to greater market fluctuations than a fund that has securities representing a broader range of investment alternatives. If securities in which the Fund concentrates fall out of favor, the Fund could underperform funds that have greater diversification.

Convertible Securities   Convertible securities are securities that are convertible into or exercisable for common stocks at a stated price or rate. Convertible securities are subject to the usual risks associated with debt securities, such as interest rate and credit risk. In addition, because convertible securities react to changes in the value of the stocks into which they convert, they are subject to market risk.

Credit   Prices of bonds and other debt instruments can fall if the issuer's actual or perceived financial health deteriorates, whether because of broad economic or issuer-specific reasons. In certain cases, the issuer could be late in paying interest or principal, or could fail to pay altogether.
Credit Default Swaps   The Fund may enter into credit default swaps, either as a buyer or a seller of the swap. As a buyer of the swap, the Fund pays a fee to protect against the risk that a security held by the Fund will default. As a seller of the swap, the Fund receives payment(s) in return for its obligation to pay the counterparty an agreed upon value of a security in the event of a default of the security issuer. Credit default swaps are particularly subject to counterparty, credit, correlation, valuation, liquidity and leveraging risks. Certain standardized swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk free.
Currency   To the extent that the Fund invests directly in foreign (non-U.S.) currencies or in securities denominated in, or that trade in, foreign (non-U.S.) currencies, it is subject to the risk that those foreign (non-U.S.) currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in value relative to the currency being hedged.
Derivative Instruments   Derivative instruments are subject to a number of risks, including the risk of changes in the market price of the underlying securities, credit risk with respect to the counterparty, risk of loss due to changes in interest rates and liquidity risk. The use of certain derivatives may also have a leveraging effect which may increase the volatility of the Fund and reduce its returns. Derivatives may not perform as expected, so the Fund may not realize the intended benefits. When used for hedging, the change in value of a derivative may not correlate as expected with the currency, security or other risk being hedged. In addition, given their complexity, derivatives expose the Fund to the risk of improper valuation.
Foreign Investments   Investing in foreign (non-U.S.) securities may result in the Fund experiencing more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies due to: smaller markets; differing reporting, accounting, and auditing standards; nationalization, expropriation, or confiscatory taxation; foreign currency fluctuations, currency blockage, or replacement; potential for default on sovereign debt; or political changes or diplomatic developments. Markets and economies throughout the world are becoming increasingly interconnected, and conditions or events in one market, country or region may adversely impact investments or issuers in another market, country or region.

Interest Rate   With bonds and other fixed rate debt instruments, a rise in interest rates generally causes values to fall; conversely, values generally rise as interest rates fall. The higher the credit quality of the instrument, and the longer its maturity or duration, the more sensitive it is likely to be to interest rate risk. In the case of inverse securities, the interest rate generally will decrease when the market rate of interest to which the inverse security is indexed decreases. As of the date of this Prospectus, interest rates in the United States are at or near historic lows, which may increase the Fund's exposure to risks associated with rising interest rates.

Investment Model   The manager's proprietary model may not adequately allow for existing or unforeseen market factors or the interplay between such factors.

Liquidity   If a security is illiquid, the Fund might be unable to sell the security at a time when the Fund's manager might wish to sell, and the security could have the effect of decreasing the overall level of the Fund's liquidity. Further, the lack of an established secondary market may make it more difficult to value illiquid securities, which could vary from the amount the Fund could realize upon disposition. The Fund may make investments that become less liquid in response to market developments or adverse investor perception. The Fund could lose money if it cannot sell a security at the time and price that would be most beneficial to the Fund.

Market   Stock prices may be volatile and are affected by the real or perceived impacts of such factors as economic conditions and political events. Stock markets tend to be cyclical, with periods when stock prices generally rise and periods when stock prices generally decline. Any given stock market segment may remain out of favor with investors for a short or long period of time, and stocks as an asset class may underperform bonds or other asset classes during some periods. Additionally, legislative, regulatory or tax policies or developments in these areas may adversely impact the investment techniques available to a manager, add to Fund costs and impair the ability of the Fund to achieve its investment objectives.

Mortgage- and/or Asset-Backed Securities   Defaults on or the low credit quality or liquidity of the underlying assets of the asset-backed (including mortgage-backed) securities held by the Fund may impair the value of the securities. There may be limitations on the enforceability of any security interest granted with respect to those underlying assets. These securities also present a higher degree of prepayment and extension risk and interest rate risk than do other types of fixed-income securities.

Municipal Obligations   The municipal market in which the Fund invests is volatile and can be significantly affected by adverse tax, legislative, or political changes and the financial condition of the issuers of municipal securities.

Other Investment Companies   The main risk of investing in other investment companies, including exchange-traded funds, is the risk that the value of the securities underlying an investment company might decrease. Because the Fund may invest in other investment companies, you will pay a proportionate share of the expenses of those other investment companies (including management fees, administration fees, and custodial fees) in addition to the expenses of the Fund.

Prepayment and Extension   Prepayment risk is the risk that principal on mortgages or other loan obligations underlying a security may be repaid prior to the stated maturity date, which may reduce the market value of the security and the anticipated yield-to-maturity. Extension risk is the risk that an issuer will exercise its right to repay principal on an obligation held by the Fund later than expected, which may decrease the value of the obligation and prevent the Fund from investing expected repayment proceeds in securities paying yields higher than the yields paid by the securities that were expected to be repaid.

Securities Lending   Securities lending involves two primary risks: "investment risk" and "borrower default risk." Investment risk is the risk that the Fund will lose money from the investment of the cash collateral received from the borrower. Borrower default risk is the risk that the Fund will lose money due to the failure of a borrower to return a borrowed security in a timely manner.

Sovereign Debt   These securities are issued or guaranteed by foreign government entities. Investments in sovereign debt are subject to the risk that a government entity may delay payment, restructure its debt, or refuse to pay interest or repay principal on its sovereign debt. Some of these reasons may include cash flow problems, insufficient foreign currency reserves, political considerations, the relative size of its debt position to its economy or its failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a government entity defaults, it may ask for more time in which to pay or for further loans. There is no legal process for collecting sovereign debts that a government does not pay or bankruptcy proceeding by which all or part of sovereign debt that a government entity has not repaid may be collected.

U.S. Government Securities and Obligations   U.S. government securities are obligations of, or guaranteed by, the U.S. government, its agencies or government-sponsored enterprises. U.S. government securities are subject to market and interest rate risk, and may be subject to varying degrees of credit risk.

An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.

PERFORMANCE INFORMATION

The following information is intended to help you understand the risks of investing in the Fund. Because Class R6 shares of the Fund had not commenced operations as of the calendar year ended December 31, 2012, the following bar chart shows the changes in the Fund’s Class SMA shares’ performance from year to year, and the table compares the Fund’s Class SMA shares’ performance to the performance of a broad-based securities market index/indices for the same period. Class R6 shares and Class SMA shares of the Fund would have substantially similar performance because they invest in the same portfolio of securities. The Fund’s performance information reflects applicable fee waivers and/or expense limitations in effect during the period presented. Absent such fee waivers/expense limitations, if any, performance would have been lower. The bar chart shows the performance of the Fund’s Class SMA shares, but does not reflect the impact of contingent deferred sales charges. If it did, returns would be lower than those shown. The Fund’s past performance (before and after taxes) is no guarantee of future results. For the most recent performance figures, go to www.INGFunds.com/literature or call 1-800-992-0180.

Calendar Year Total Returns
(as of December 31 of each year)

Best quarter: 2nd, 2009, 7.52% and Worst quarter: 3rd, 2008, (4.76)%

The Fund's Class SMA shares' year-to-date total return as of March 31, 2013: (0.03)%

Average Annual Total Returns%
(for the periods ended December 31, 2012)

Average Annual Total Returns ING Investment Grade Credit Fund		1 Yr	5 Yrs	10 Yrs	since inception		Inception Date
Class SMA		8.13%	7.05%		7.54%		Jun. 08, 2007
Class SMA After tax on distributions		6.80%	5.00%		5.49%
Class SMA After tax on distributions with sale		5.34%	4.87%		5.26%
Barclays U.S. Corporate Index	[1][2]	9.82%	7.87%		7.64%	[3]
BoA/ML 1-10 Index	[1][2]	9.44%	6.90%		6.80%	[3]

After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. In some cases the after-tax returns may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of Fund shares at the end of the measurement period.

[1] Expense ratios have been adjusted to reflect current contractual rates.

[2] Other Expenses are based on estimated amounts for the current fiscal year.

[1] The index returns do not reflect deductions for fees, expenses, or taxes.

[2] On November 16, 2012, the Fund changed its primary benchmark index from the BoA/ML 1-10 Index to the Barclays U.S. Corporate Index because the Barclays U.S. Corporate Index is considered by the adviser to be a more appropriate benchmark index reflecting the types of securities in which the Fund now invests.

[3] Reflects index performance since the date closest to inception for which data is available.

XML

Document and Entity Information	12 Months Ended
	May 31, 2013
Risk/Return:
Document Type	485BPOS
Document Period End Date	Sep. 30, 2012
Registrant Name	ING Separate Portfolios Trust
Central Index Key	0001392116
Amendment Flag	false
Document Creation Date	May 31, 2013
Document Effective Date	May 31, 2013
Prospectus Date	May 31, 2013