Mainstay Funds Trust EFFECT Notice of effectiveness

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	February 26, 2010

Accession Number:

0001144204-10-003163

Submission Type:

485APOS

CIK:

0001469192

Company Name:

MAINSTAY FUNDS TRUST

File Number:

333-160918

REFERENCED SERIES/CLASSES (CONTRACTS)

Series ID
	Class/Contract	Name
S000028518		MainStay Cash Reserves Fund
	C000087274	Class I
	C000087275	Sweep Shares

Series ID
	Class/Contract	Name
S000028519		MainStay ICAP Equity Fund
	C000087276	Investor Class
	C000087277	Class A
	C000087278	Class C
	C000087279	Class I
	C000087280	Class R1
	C000087281	Class R2
	C000087282	Class R3

Series ID
	Class/Contract	Name
S000028520		MainStay ICAP Select Equity Fund
	C000087283	Investor Class
	C000087284	Class A
	C000087285	Class B
	C000087286	Class C
	C000087287	Class I
	C000087288	Class R1
	C000087289	Class R2
	C000087290	Class R3

Series ID
	Class/Contract	Name
S000028521		MainStay ICAP Global Fund
	C000087291	Investor Class
	C000087292	Class A
	C000087293	Class C
	C000087294	Class I

Series ID
	Class/Contract	Name
S000028522		MainStay ICAP International Fund
	C000087295	Investor Class
	C000087296	Class A
	C000087297	Class C
	C000087298	Class I
	C000087299	Class R1
	C000087300	Class R2
	C000087301	Class R3

Series ID
	Class/Contract	Name
S000028523		MainStay Epoch U.S. All Cap Fund
	C000087302	Investor Class
	C000087303	Class A
	C000087304	Class B
	C000087305	Class C
	C000087306	Class I

Series ID
	Class/Contract	Name
S000028524		MainStay Growth Equity Fund
	C000087307	Investor Class
	C000087308	Class A
	C000087309	Class B
	C000087310	Class C
	C000087311	Class I

Series ID
	Class/Contract	Name
S000028525		MainStay S&P 500 Index Fund
	C000087312	Investor Class
	C000087313	Class A
	C000087314	Class I

Series ID
	Class/Contract	Name
S000028526		MainStay Retirement 2010 Fund
	C000087315	Investor Class
	C000087316	Class A
	C000087317	Class I
	C000087318	Class R1
	C000087319	Class R2
	C000087320	Class R3

Series ID
	Class/Contract	Name
S000028527		MainStay Retirement 2020 Fund
	C000087321	Investor Class
	C000087322	Class A
	C000087323	Class I
	C000087324	Class R1
	C000087325	Class R2
	C000087326	Class R3

Series ID
	Class/Contract	Name
S000028528		MainStay Retirement 2030 Fund
	C000087327	Investor Class
	C000087328	Class A
	C000087329	Class I
	C000087330	Class R1
	C000087331	Class R2
	C000087332	Class R3

Series ID
	Class/Contract	Name
S000028529		MainStay Floating Rate Fund
	C000087333	Investor Class
	C000087334	Class A
	C000087335	Class B
	C000087336	Class C
	C000087337	Class I

Series ID
	Class/Contract	Name
S000028530		MainStay Retirement 2040 Fund
	C000087338	Investor Class
	C000087339	Class A
	C000087340	Class I
	C000087341	Class R1
	C000087342	Class R2
	C000087343	Class R3

Series ID
	Class/Contract	Name
S000028531		MainStay Retirement 2050 Fund
	C000087344	Class I
	C000087345	Class R1
	C000087346	Class R2
	C000087347	Class R3
	C000087348	Investor Class
	C000087349	Class A

Series ID
	Class/Contract	Name
S000028532		MainStay Conservative Allocation Fund
	C000087350	Investor Class
	C000087351	Class A
	C000087352	Class B
	C000087353	Class C
	C000087354	Class I

Series ID
	Class/Contract	Name
S000028533		MainStay Moderate Allocation Fund
	C000087355	Investor Class
	C000087356	Class A
	C000087357	Class B
	C000087358	Class C
	C000087359	Class I

Series ID
	Class/Contract	Name
S000028534		MainStay Moderate Growth Allocation Fund
	C000087360	Investor Class
	C000087361	Class A
	C000087362	Class B
	C000087363	Class C
	C000087364	Class I

Series ID
	Class/Contract	Name
S000028535		MainStay Growth Allocation Fund
	C000087365	Investor Class
	C000087366	Class A
	C000087367	Class B
	C000087368	Class C
	C000087369	Class I

Series ID
	Class/Contract	Name
S000028536		MainStay Indexed Bond Fund
	C000087370	Class I
	C000087371	Investor Class
	C000087372	Class A

Series ID
	Class/Contract	Name
S000028537		MainStay Intermediate Term Bond Fund
	C000087373	Investor Class
	C000087374	Class A
	C000087375	Class B
	C000087376	Class C
	C000087377	Class I

Series ID
	Class/Contract	Name
S000028538		MainStay Short Term Bond Fund
	C000087378	Investor Class
	C000087379	Class A
	C000087380	Class I

Series ID
	Class/Contract	Name
S000028539		MainStay 130/30 Core Fund
	C000087381	Investor Class
	C000087382	Class A
	C000087383	Class C
	C000087384	Class I

Series ID
	Class/Contract	Name
S000028540		MainStay 130/30 Growth Fund
	C000087385	Investor Class
	C000087386	Class A
	C000087387	Class C
	C000087388	Class I

Series ID
	Class/Contract	Name
S000028541		MainStay High Yield Opportunities Fund
	C000087389	Investor Class
	C000087390	Class A
	C000087391	Class C
	C000087392	Class I

Series ID
	Class/Contract	Name
S000028542		MainStay 130/30 International Fund
	C000087393	Investor Class
	C000087394	Class A
	C000087395	Class C
	C000087396	Class I