
                                       UNITED STATES
                           SECURITIES AND EXCHANGE COMMISSION
                                 Washington, D.C.  20549


                                        FORM 8-K


                     Current Report Pursuant To Section 13 or 15(d) of
                            the Securities Exchange Act of 1934

           Date of Report (Date of earliest event reported):  May 25, 2005
                          (Date of earliest event reported)

            Indymac MBS Inc (as Depositor under the Pooling and Servicing
            Agreement, dated as March 1, 2005, providing for the issuance
            of IndyMac MBS, Inc. Home Equity Mortgage Loan Asset-Backed
            Trust Series INABS 2005-A Home Equity Mortgage Loan Asset-
                       Backed Certificates INABS 2005-A
                 (Exact name of registrant as specified in charter)

                                       DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-120706-03                         95-4685267
          (Commission File Number)        (I.R.S. Employer Identification No.)


          155 NORTH LAKE AVENUE
          PASADENA, CALIFORNIA                         91101
          (Address of principal executive offices)     (Zip Code)


          Registrant's Telephone Number, Including Area Code:  (626) 535-5555


       (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any
of the following provisions (see General Instruction A.2. below):

[  ] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

[  ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act
(17 CFR 240.14a-12(b))

[  ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

[  ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))


     Item 8.01  Other Events

     Attached hereto is a copy of the Monthly Remittance Statements to the
     Certificateholders which was derived from the monthly information
     submitted by the Master Servicer of the Trust to the Trustee.


     Item 9.01 Financial Statements and Exhibits

     (c) Exhibits:

     Exhibit No. Description

     99.1 Monthly Remittance Statement to the Certificateholders dated as of
     May 25, 2005.

                                    Signatures

               Pursuant to the requirements of the Securities Exchange Act of
          1934, the Registrant has duly caused this report to be signed on its
          behalf by the undersigned, hereunto duly authorized.


                                  Deutsche Bank National Trust Company,
                                  in its capacity as Trustee under the
                                  Pooling and Servicing Agreement on
                                  behalf of Indymac MBS Inc, Registrant


          Date:  Jun 02, 2005               By:  /s/  Katherine M. Wannenmacher
                                            Katherine M. Wannenmacher
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          99.1 Monthly Remittance Statement to the Certificateholders
          dated as of May 25, 2005.



IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

				External Parties						Table of Contents

													Page
				Seller									Page
				Seller						1. Certificate Payment Report					2
				IndyMac Bank						1. Certificate Payment Report					2
				IndyMac Bank						2. Collection Account Report					6
										2. Collection Account Report					6
										3. Credit Enhancement Report					8
										4. Collateral Report					9
				Certificate Insurer(s)						5. Delinquency Report					12
				Certificate Insurer(s)						5. Delinquency Report					12
										6. REO Report					15

										7. Foreclosure Report					16
										8. Prepayment Report					17
										9. Prepayment Detail Report					20
										9. Prepayment Detail Report					20
										10. Realized Loss Report					22
										11. Realized Loss Detail Report					26
				Servicer(s)						11. Realized Loss Detail Report					26
				Servicer(s)						12. Triggers and Adj. Cert. Report					27
				IndyMac Bank						12. Triggers and Adj. Cert. Report					27
				IndyMac Bank						13. Additional Certificate Report					28
										13. Additional Certificate Report					28
										14. Other Related Information					29


				Underwriter(s)
				UBS Securities


										Total Number of Pages					29
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			March 01, 2005			Brent Hoyler
				Close Date:			March 11, 2005			Administrator
				First Distribution Date:			April 25, 2005			(714) 247-6322
										Brent.Hoyler@db.com
										Brent.Hoyler@db.com
										Address:
										1761 East St. Andrew Place, Santa Ana, CA 92705
				Distribution Date:			May 25, 2005
										Factor Information:			(800) 735-7777
				Record Date:			April 29, 2005			Factor Information:			(800) 735-7777
										Main Phone Number:			(714) 247-6000

							May 24, 2005
							May 24, 2005

										https://www.tss.db.com/invr






Page 1 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Certificate Payment Report
Current Period Distribution - REMIC III
					Prior												Current
	Class		Original		Principal						Total		Realized		Deferred		Principal
	Class		Original		Principal						Total		Realized		Deferred		Principal
Class	Type	Cur	Face Value		Balance		Interest		Principal		Distribution		Loss		Interest		Balance


					(1)		(2)		(3)		(4)=(2)+(3)		(5)		(6)		(7)=(1)-(3)-(5)+(6)

A-I-1	AFC/FLT/STE	$	463,377,000.00		452,512,760.93		1,225,555.39		7,940,941.32		9,166,496.71		0.00		0.00		444,571,819.61
A-I-1	AFC/FLT/STE	$	463,377,000.00		452,512,760.93		1,225,555.39		7,940,941.32		9,166,496.71		0.00		0.00		444,571,819.61
A-I-2	AFC/FLT/STE	$	115,844,000.00		113,127,946.10		312,044.58		1,985,231.05		2,297,275.63		0.00		0.00		111,142,715.05
A-II-1	AFC/FLT/STE	$	100,916,000.00		97,014,158.60		253,045.26		3,979,227.90		4,232,273.16		0.00		0.00		93,034,930.70
A-II-2	AFC/FLT/STE	$	117,178,000.00		117,178,000.00		314,427.63		0.00		314,427.63		0.00		0.00		117,178,000.00
A-II-3	AFC/FLT/STE	$	14,185,000.00		14,185,000.00		39,718.00		0.00		39,718.00		0.00		0.00		14,185,000.00
M-1	AFC/FLT/STE	$	31,000,000.00		31,000,000.00		90,158.33		0.00		90,158.33		0.00		0.00		31,000,000.00
M-2	AFC/FLT/STE	$	29,500,000.00		29,500,000.00		86,533.33		0.00		86,533.33		0.00		0.00		29,500,000.00
M-3	AFC/FLT/STE	$	19,000,000.00		19,000,000.00		56,525.00		0.00		56,525.00		0.00		0.00		19,000,000.00
M-4	AFC/FLT/STE	$	15,000,000.00		15,000,000.00		46,750.00		0.00		46,750.00		0.00		0.00		15,000,000.00
M-5	AFC/FLT/STE	$	15,500,000.00		15,500,000.00		48,695.83		0.00		48,695.83		0.00		0.00		15,500,000.00
M-6	AFC/FLT/STE	$	14,000,000.00		14,000,000.00		44,916.67		0.00		44,916.67		0.00		0.00		14,000,000.00
M-7	AFC/FLT/STE	$	12,000,000.00		12,000,000.00		43,200.00		0.00		43,200.00		0.00		0.00		12,000,000.00
M-8	AFC/FLT/STE	$	8,000,000.00		8,000,000.00		29,466.67		0.00		29,466.67		0.00		0.00		8,000,000.00
M-9	AFC/FLT/STE	$	7,500,000.00		7,500,000.00		32,625.00		0.00		32,625.00		0.00		0.00		7,500,000.00
M-10	AFC/FLT/STE	$	7,000,000.00		7,000,000.00		38,033.33		0.00		38,033.33		0.00		0.00		7,000,000.00
M-11	AFC/FLT/STE	$	10,000,000.00		10,000,000.00		54,333.33		0.00		54,333.33		0.00		0.00		10,000,000.00
C	EXE/WAC	$	19,999,900.00		20,000,000.00		2,761,326.20		0.00		2,761,326.20		0.00		0.00		19,999,999.94
P	FIX	$	100.00		100.00		128,284.03		0.00		128,284.03		0.00		0.00		100.00
R	FIX/EXE	$	0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00


Total			1,000,000,000.00		982,517,965.63		5,605,638.58		13,905,400.27		19,511,038.85		0.00		0.00		968,612,565.30
Total





Page 2 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face-
									Orig. Principal		Prior							Current
									Orig. Principal		Prior							Current
	Period		Period						(with Notional)		Principal						Total	Principal
	Period		Period
Class	Starting		Ending		Method		Cusip		Balance		Balance		Interest		Principal		Distribution	Balance

									(1)		(1)		(2)		(3)		(4)=(2)+(3)	(5)
A-I-1	04/25/05		05/24/05		A-Act/360		43708AAL6		463,377,000.00		976.554212		2.644834		17.137107		19.781942	959.417104
A-I-2	04/25/05		05/24/05		A-Act/360		43708AAM4		115,844,000.00		976.554212		2.693662		17.137107		19.830769	959.417104
A-II-1	04/25/05		05/24/05		A-Act/360		43708AAN2		100,916,000.00		961.335751		2.507484		39.431090		41.938574	921.904660
A-II-2	04/25/05		05/24/05		A-Act/360		43708AAP7		117,178,000.00		1,000.000000		2.683333		0.000000		2.683333	1,000.000000
A-II-3	04/25/05		05/24/05		A-Act/360		43708AAQ5		14,185,000.00		1,000.000000		2.800000		0.000000		2.800000	1,000.000000
M-1	04/25/05		05/24/05		A-Act/360		43708AAR3		31,000,000.00		1,000.000000		2.908333		0.000000		2.908333	1,000.000000
M-2	04/25/05		05/24/05		A-Act/360		43708AAS1		29,500,000.00		1,000.000000		2.933333		0.000000		2.933333	1,000.000000
M-3	04/25/05		05/24/05		A-Act/360		43708AAT9		19,000,000.00		1,000.000000		2.975000		0.000000		2.975000	1,000.000000
M-4	04/25/05		05/24/05		A-Act/360		43708AAU6		15,000,000.00		1,000.000000		3.116667		0.000000		3.116667	1,000.000000
M-5	04/25/05		05/24/05		A-Act/360		43708AAV4		15,500,000.00		1,000.000000		3.141666		0.000000		3.141666	1,000.000000
M-6	04/25/05		05/24/05		A-Act/360		43708AAW2		14,000,000.00		1,000.000000		3.208334		0.000000		3.208334	1,000.000000
M-7	04/25/05		05/24/05		A-Act/360		43708AAX0		12,000,000.00		1,000.000000		3.600000		0.000000		3.600000	1,000.000000
M-8	04/25/05		05/24/05		A-Act/360		43708AAY8		8,000,000.00		1,000.000000		3.683334		0.000000		3.683334	1,000.000000
M-9	04/25/05		05/24/05		A-Act/360		43708AAZ5		7,500,000.00		1,000.000000		4.350000		0.000000		4.350000	1,000.000000
M-10	04/25/05		05/24/05		A-Act/360		43708ABA9		7,000,000.00		1,000.000000		5.433333		0.000000		5.433333	1,000.000000
M-11	04/25/05		05/24/05		A-Act/360		456606GP1		10,000,000.00		1,000.000000		5.433333		0.000000		5.433333	1,000.000000
C	04/01/05		04/30/05		A-30/360		IN05S101C		19,999,900.00		1,000.005000		138.067000		0.000000		138.067000	1,000.004997
P	04/01/05		04/30/05		A-30/360		IN05S101P		100.00		1,000.000000		1,282,840.300000		0.000000		1,282,840.300000	1,000.000000
R	04/01/05		04/30/05		A-30/360		IN05S101R		0.00		0.000000		0.000000		0.000000		0.000000	0.000000




Page 3 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

Distribution to Date - REMIC III
																	Current


	Original				Unscheduled		Scheduled		Total		Total		Realized		Deferred		Principal

Class	Face Value		Interest		Principal		Principal		Principal		Distribution		Loss		Interest		Balance
	(1)		(2)		(3)		(4)		(5)=(3)+(4)		(6)=(2)+(5)		(7)		(8)		(9)=(1)-(5)-(7)+(8)
A-I-1	463,377,000.00		2,963,943.17		1,894,545.89		669,229.97		18,805,180.39		21,769,123.56		0.00		0.00		444,571,819.61
A-I-2	115,844,000.00		755,328.89		0.00		167,307.13		4,701,284.95		5,456,613.84		0.00		0.00		111,142,715.05
A-II-1	100,916,000.00		616,500.54		7,589,224.61		291,844.69		7,881,069.30		8,497,569.84		0.00		0.00		93,034,930.70
A-II-2	117,178,000.00		749,634.05		0.00		0.00		0.00		749,634.05		0.00		0.00		117,178,000.00
A-II-3	14,185,000.00		94,884.35		0.00		0.00		0.00		94,884.35		0.00		0.00		14,185,000.00
M-1	31,000,000.00		215,756.77		0.00		0.00		0.00		215,756.77		0.00		0.00		31,000,000.00
M-2	29,500,000.00		207,160.67		0.00		0.00		0.00		207,160.67		0.00		0.00		29,500,000.00
M-3	19,000,000.00		135,404.69		0.00		0.00		0.00		135,404.69		0.00		0.00		19,000,000.00
M-4	15,000,000.00		112,210.94		0.00		0.00		0.00		112,210.94		0.00		0.00		15,000,000.00
M-5	15,500,000.00		116,920.05		0.00		0.00		0.00		116,920.05		0.00		0.00		15,500,000.00
M-6	14,000,000.00		107,938.55		0.00		0.00		0.00		107,938.55		0.00		0.00		14,000,000.00
M-7	12,000,000.00		104,268.75		0.00		0.00		0.00		104,268.75		0.00		0.00		12,000,000.00
M-8	8,000,000.00		71,179.17		0.00		0.00		0.00		71,179.17		0.00		0.00		8,000,000.00
M-9	7,500,000.00		79,230.47		0.00		0.00		0.00		79,230.47		0.00		0.00		7,500,000.00
M-10	7,000,000.00		92,906.77		0.00		0.00		0.00		92,906.77		0.00		0.00		7,000,000.00
M-11	10,000,000.00		132,723.95		0.00		0.00		0.00		132,723.95		0.00		0.00		10,000,000.00
C	19,999,900.00		3,137,116.89		-97.43		-2.83		0.00		3,137,116.89		0.00		100.00		19,999,999.94
P	100.00		227,512.68		0.00		0.00		0.00		227,512.68		0.00		0.00		100.00
R	0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00


Total	1,000,000,000.00		9,920,621.35		9,483,673.07		1,128,378.96		31,387,534.64		41,308,155.99		0.00		100.00		968,612,565.30



Page 4 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

Interest Detail - REMIC III
	Pass		Prior Principal				Non-		Prior		Unscheduled				Paid or		Current
	Pass		Prior Principal				Non-		Prior		Unscheduled				Paid or

	Through		(with Notional)		Accrued		Supported		Unpaid		Interest		Optimal		Deferred		Unpaid

Class	Rate		Balance		Interest		Interest SF		Interest		Adjustment		Interest		Interest		Interest
					(1)		(2)		(3)		(4)		(5)=(1)-(2)+(3)+(4)		(6)		(7)=(5)-(6)
A-I-1	3.25000%		452,512,760.93		1,225,555.39		0.00		0.00		0.00		1,225,555.39		1,225,555.39		0.00
A-I-2	3.31000%		113,127,946.10		312,044.58		0.00		0.00		0.00		312,044.58		312,044.58		0.00
A-II-1	3.13000%		97,014,158.60		253,045.26		0.00		0.00		0.00		253,045.26		253,045.26		0.00
A-II-2	3.22000%		117,178,000.00		314,427.63		0.00		0.00		0.00		314,427.63		314,427.63		0.00
A-II-3	3.36000%		14,185,000.00		39,718.00		0.00		0.00		0.00		39,718.00		39,718.00		0.00
M-1	3.49000%		31,000,000.00		90,158.33		0.00		0.00		0.00		90,158.33		90,158.33		0.00
M-2	3.52000%		29,500,000.00		86,533.33		0.00		0.00		0.00		86,533.33		86,533.33		0.00
M-3	3.57000%		19,000,000.00		56,525.00		0.00		0.00		0.00		56,525.00		56,525.00		0.00
M-4	3.74000%		15,000,000.00		46,750.00		0.00		0.00		0.00		46,750.00		46,750.00		0.00
M-5	3.77000%		15,500,000.00		48,695.83		0.00		0.00		0.00		48,695.83		48,695.83		0.00
M-6	3.85000%		14,000,000.00		44,916.67		0.00		0.00		0.00		44,916.67		44,916.67		0.00
M-7	4.32000%		12,000,000.00		43,200.00		0.00		0.00		0.00		43,200.00		43,200.00		0.00
M-8	4.42000%		8,000,000.00		29,466.67		0.00		0.00		0.00		29,466.67		29,466.67		0.00
M-9	5.22000%		7,500,000.00		32,625.00		0.00		0.00		0.00		32,625.00		32,625.00		0.00
M-10	6.52000%		7,000,000.00		38,033.33		0.00		0.00		0.00		38,033.33		38,033.33		0.00
M-11	6.52000%		10,000,000.00		54,333.33		0.00		0.00		0.00		54,333.33		54,333.33		0.00
C	165.67957%		20,000,000.00		0.00		0.00		0.00		0.00		0.00		2,761,326.20		0.00
P	0.00000%		100.00		0.00		0.00		0.00		0.00		0.00		128,284.03		0.00
R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00


Total			982,517,965.63		2,716,028.35		0.00		0.00		0.00		2,716,028.35		5,605,638.58		0.00



Page 5 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Collection Account Report
SUMMARY
SUMMARY
										Group 2		Group 1		Total
Principal Collections										3,972,683.93		9,900,944.33		13,873,628.26
Principal Withrawals										0.00		0.00		0.00
Principal Other Accounts										0.00		0.00		0.00
TOTAL NET PRINCIPAL										3,972,683.93		9,900,944.33		13,873,628.26
Interest Collections										1,590,051.67		3,978,373.01		5,568,424.67
Interest Withdrawals										-0.00		-0.00		-0.00
Interest Other Accounts										0.00		128,284.03		128,284.03
Interest Fees										-26,170.26		-64,899.88		-91,070.15
TOTAL NET INTEREST										1,563,881.40		4,041,757.16		5,605,638.55
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION										5,543,109.31		13,967,929.55		19,511,038.91



PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
											Group 2		Group 1		Total
Scheduled Principal Received											154,448.57		480,748.75		635,197.32
Prepayments In Full											3,614,814.72		8,479,504.23		12,094,318.95
Curtailments											16,640.64		#######		253,387.99
Liquidations											0.00		0.00		0.00
Insurance Principal											0.00		0.00		0.00
Repurchased Principal Amounts											186,780.00		703,944.00		890,724.00
Other Principal											0.00		0.00		0.00
Total Realized Loss Of Principal											-0.00		-0.00		-0.00
Delinquent Principal											-118,591.64		-377,314.38		-495,906.02
Advanced Principal											118,591.64		377,314.38		495,906.02
TOTAL PRINCIPAL COLLECTED											3,972,683.93		9,900,944.33		13,873,628.26


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
										Group 2		Group 1		Total
TOTAL OTHER ACCOUNTS PRINCIPAL										0.00		0.00		0.00





Page 6 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
										Group 2		Group 1		Total
Scheduled Interest										1,680,765.87		4,201,485.68		5,882,251.55
Liquidation Interest										0.00		0.00		0.00
Repurchased Interest										1,345.64		4,764.06		6,109.70
Insurance Interest										0.00		0.00		0.00
Other Interest										0.00		0.00		0.00
Relief Act Interest Shortfalls										-0.00		-0.00		-0.00
Prepayment Interest Shortfalls										-3,146.32		-7,013.96		-10,160.28
Compensating Interest										3,146.32		7,013.95		10,160.27
Delinquent Interest										-1,330,820.08		-3,305,324.34		-4,636,144.42
Interest Advanced										1,238,760.25		3,077,447.60		4,316,207.85
TOTAL INTEREST COLLECTED										1,590,051.67		3,978,373.01		5,568,424.67


INTEREST - WITHDRAWALS
INTEREST - WITHDRAWALS
										Group 2		Group 1		Total
TOTAL INTEREST WITHDRAWALS										0.00		0.00		0.00



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
										Group 2		Group 1		Total
Prepayment Charges										0.00		128,284.03		128,284.03
TOTAL INTEREST OTHER ACCOUNTS										0.00		128,284.03		128,284.03



INTEREST - FEES
INTEREST - FEES
										Group 2		Group 1		Total
Current Servicing Fees										25,699.23		63,733.44		89,432.67
Current Trustee Fees										471.04		1,166.44		1,637.48
TOTAL INTEREST OTHER FEES										26,170.26		64,899.88		91,070.15




Page 7 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Credit Enhancement Report

ACCOUNTS


RESERVE

Initial Deposit						0.00
Amount Withdrawn						0.00
Releases						0.00




INSURANCE

SPACE INTENTIONALLY LEFT BLANK



STRUCTURAL FEATURES
STRUCTURAL FEATURES
										Group 2		Group 1		Total
Overcollateralized Amount														19,999,999.94
Overcollateralization Target Amount														20,000,000.00
Overcollateralization Release Amount														0.03
Overcollateralization Deficiency Amount														0.00



Page 8 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Collateral Report


COLLATERAL



											Group 2		Group 1		Total



Loan Count:


Original										639		3,220		3,859
Prior										994		4,014		5,008
Prefunding										367		858		1,225
Scheduled Paid Offs										-0		-0		-0
Full Voluntary Prepayments										-13		-44		-57
Repurchases										-2		-6		-8
Liquidations										-0		-0		-0
Current										978		3,964		4,942
Principal Balance:


Original										195,915,767.25		560,385,537.49		756,301,304.74
Prior										282,621,749.25		699,864,444.31		982,486,193.56
Prefunding										0.00		0.00		0.00
Scheduled Principal										-154,448.57		-480,748.75		-635,197.32
Partial Prepayments										-16,640.64		-236,747.35		-253,387.99
Full Voluntary Prepayments										-3,614,814.72		-8,479,504.23		-12,094,318.95
Repurchases										-186,780.00		-703,944.00		-890,724.00
Liquidations										-0.00		-0.00		-0.00
Current										278,353,396.20		690,259,169.10		968,612,565.30





PREFUNDING
PREFUNDING
										Group 2		Group 1		Total
Prefunding Account Beginning Balance										6,543.98		25,228.06		31,772.10
Prefund Release to Certificate Holders										6,543.98		25,228.06		31,772.10
Prefunding Account Ending Balance										0.00		0.00		0.00






Page 9 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

CHARACTERISTICS
CHARACTERISTICS
										Group 2		Group 1		Total
Weighted Average Coupon Original										7.16864%		7.19991%		7.19181%
Weighted Average Coupon Prior										7.16864%		7.19991%		7.19181%
Weighted Average Coupon Current										7.14989%		7.20899%		7.19199%
Weighted Average Months to Maturity Original										356		355		355
Weighted Average Months to Maturity Prior										356		355		355
Weighted Average Months to Maturity Current										356		354		354
Weighted Avg Remaining Amortization Term Original										356		355		355
Weighted Avg Remaining Amortization Term Prior										356		355		355
Weighted Avg Remaining Amortization Term Current										356		354		354
Weighted Average Seasoning Original										2.71		2.69		2.69
Weighted Average Seasoning Prior										2.71		2.69		2.69
Weighted Average Seasoning Current										3.25		3.29		3.28









Page 10 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
										Group 2		Group 1		Total
Weighted Average Margin Original										5.38160%		5.36545%		5.36973%
Weighted Average Margin Prior										5.38160%		5.36545%		5.36973%
Weighted Average Margin Current										5.37766%		5.43712%		5.41915%
Weighted Average Max Rate Original										13.48262%		13.44100%		13.45203%
Weighted Average Max Rate Prior										13.48262%		13.44100%		13.45203%
Weighted Average Max Rate Current										13.44157%		13.48725%		13.47345%
Weighted Average Min Rate Original										5.44125%		5.41203%		5.41977%
Weighted Average Min Rate Prior										5.44125%		5.41203%		5.41977%
Weighted Average Min Rate Current										5.43927%		5.47770%		5.46609%
Weighted Average Cap Up Original										1.03325%		1.05382%		1.04837%
Weighted Average Cap Up Prior										1.03325%		1.05382%		1.04837%
Weighted Average Cap Up Current										1.03055%		1.04976%		1.04396%
Weighted Average Cap Down Original										1.03325%		1.05382%		1.04837%
Weighted Average Cap Down Prior										1.03325%		1.05382%		1.04837%
Weighted Average Cap Down Current										1.03055%		1.04976%		1.04396%




SERVICING FEES & ADVANCES

											Group 2		Group 1		Total




Current Servicing Fees										25,699.23		63,733.44		89,432.67
Delinquent Servicing Fees										92,059.83		227,876.75		319,936.58
TOTAL SERVICING FEES										117,635.87		291,733.39		409,369.26


Compensating Interest										-3,146.32		-7,013.95		-10,160.27
Delinquent Servicing Fees										-92,059.83		-227,876.75		-319,936.58
COLLECTED SERVICING FEES										22,429.72		56,842.69		79,272.40


Aggregate Advances with respect to this Distribution										1,357,351.89		3,454,761.98		4,812,113.87





ADDITIONAL COLLATERAL INFORMATION
										Group 2		Group 1		Total
Net Prepayment Interest Shortfall										0.00		0.00		0.00
Libor For Current Period														3.0200%

Total Net Monthly Excess Cashflow												2,793,098.21		2,793,098.21




Page 11 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				8,317,897.58		454,369.87		0.00		8,772,267.45
			% Balance				0.86%		0.05%		0.00%		0.91%
			# Loans				45		1		0		46
			% # Loans				0.91%		0.02%		0.00%		0.93%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		286,930.74		0.00		0.00		0.00		286,930.74
			% Balance		0.03%		0.00%		0.00%		0.00%		0.03%
			# Loans		2		0		0		0		2
			% # Loans		0.04%		0.00%		0.00%		0.00%		0.04%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		286,930.74		8,317,897.58		454,369.87		0.00		9,059,198.19
			% Balance		0.03%		0.86%		0.05%		0.00%		0.94%
			# Loans		2		45		1		0		48
			% # Loans		0.04%		0.91%		0.02%		0.00%		0.97%









Page 12 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution


	GROUP 1
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				5,864,034.24		0.00		0.00		5,864,034.24
			% Balance				0.85%		0.00%		0.00%		0.85%
			# Loans				34		0		0		34
			% # Loans				0.86%		0.00%		0.00%		0.86%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		286,930.74		0.00		0.00		0.00		286,930.74
			% Balance		0.04%		0.00%		0.00%		0.00%		0.04%
			# Loans		2		0		0		0		2
			% # Loans		0.05%		0.00%		0.00%		0.00%		0.05%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		286,930.74		5,864,034.24		0.00		0.00		6,150,964.98
			% Balance		0.04%		0.85%		0.00%		0.00%		0.89%
			# Loans		2		34		0		0		36
			% # Loans		0.05%		0.86%		0.00%		0.00%		0.91%










Page 13 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

	GROUP 2
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				2,453,863.34		454,369.87		0.00		2,908,233.21
			% Balance				0.88%		0.16%		0.00%		1.04%
			# Loans				11		1		0		12
			% # Loans				1.12%		0.10%		0.00%		1.23%
	FORECLOSURE		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00		0.00		0.00		0.00		0.00
			% Balance		0.00%		0.00%		0.00%		0.00%		0.00%
			# Loans		0		0		0		0		0
			% # Loans		0.00%		0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00		2,453,863.34		454,369.87		0.00		2,908,233.21
			% Balance		0.00%		0.88%		0.16%		0.00%		1.04%
			# Loans		0		11		1		0		12
			% # Loans		0.00%		1.12%		0.10%		0.00%		1.23%









Page 14 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
REO Report
Loan Number			Original		Stated				Current		State &

														First
&			Principal		Principal		Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance		Date		Rate		Origination		Term		Date




TOTAL



Page 15 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Foreclosure Report
Loan Number			Original		Stated				Current		State &

														First
&			Principal		Principal		Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance		Date		Rate		Origination		Term		Date




TOTAL



Page 16 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

											Group 2		Group 1		Total




Current


Number of Paid in Full Loans										13		44		57
Number of Repurchased Loans										2		6		8
Total Number of Loans Prepaid in Full										15		50		65
Curtailments Amount										16,640.64		236,747.35		253,387.99
Paid in Full Balance										3,614,814.72		8,479,504.23		12,094,318.95
Repurchased Loans Balance										186,780.00		703,944.00		890,724.00
Total Prepayment Amount										3,818,235.36		9,420,195.58		13,238,430.94

Cumulative


Number of Paid in Full Loans										24		97		121
Number of Repurchased Loans										3		18		21
Total Number of Loans Prepaid in Full										27		115		142
Paid in Full Balance										6,972,797.01		19,306,680.32		26,279,477.33
Repurchased Loans Balance										603,866.60		3,037,801.00		3,641,667.60
Curtailments Amount										31,867.80		274,270.67		306,138.47
Total Prepayment Amount										7,608,531.41		22,618,751.99		30,227,283.40










Page 17 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

											Group 2		Group 1		Total



SMM										1.46%		1.30%		1.35%
3 Months Avg SMM										1.70%		1.83%		1.80%
12 Months Avg SMM										1.70%		1.83%		1.80%
Avg SMM Since Cut-off										1.70%		1.83%		1.80%


CPR										16.14%		14.58%		15.03%
3 Months Avg CPR										18.56%		19.90%		19.58%
12 Months Avg CPR										18.56%		19.90%		19.58%
Avg CPR Since Cut-off										18.56%		19.90%		19.58%


PSA										2,480.54%		2,215.13%		2,291.28%
3 Months Avg PSA Approximation										3,111.54%		3,328.95%		3,277.03%
12 Months Avg PSA Approximation										3,111.54%		3,328.95%		3,277.03%
Avg PSA Since Cut-off Approximation										3,111.54%		3,328.95%		3,277.03%










Page 18 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution






PREPAYMENT CALCULATION METHODOLOGY

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidations )/(Beg Principal Balance - Sched Principal) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) PSA Standard Prepayment Model: CPR/(0.002min(30,WAS)) Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn)(1-SMMn+1)...(1-SMMm)]^(1/months in period n,m) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*Avg WASn,m)) Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m) Weighted Average Seasoning (WAS) Dates correspond to distribution dates. Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.













Page 19 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Prepayment Detail Report
Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution
Loan Number			Original							Current		State &		Type Prepayment		First
Loan Number			Original							Current		State &		Type Prepayment

&		Loan	Principal		Prepayment			Prepayment		Note		LTV at		&		Payment

Loan Group		Status	Balance		Amount			Date		Rate		Origination		Original Term		Date

120166729 1			289,000.00		287,612.34			07-Apr-2005		7.990%		NJ - 94.44%		Paid Off - 360		01-Oct-2004
			289,000.00

120166746 1			357,425.00		355,333.62			04-May-2005		6.990%		NY - 85.00%		Paid Off - 360		01-Oct-2004
120166746 1					355,333.62			04-May-2005		6.990%		NY - 85.00%		Paid Off - 360		01-Oct-2004
120166860 1			120,000.00		119,323.95			11-May-2005		7.875%		SC - 100.00%		Paid Off - 360		01-Sep-2004
120166860 1					119,323.95			11-May-2005		7.875%		SC - 100.00%		Paid Off - 360		01-Sep-2004
120364398 1			294,750.00		293,544.46			02-May-2005		8.500%		CA - 89.54%		Paid Off - 360		01-Nov-2004
120364398 1					293,544.46			02-May-2005		8.500%		CA - 89.54%		Paid Off - 360		01-Nov-2004
120371528 1			224,800.00		224,800.00			28-Apr-2005		6.500%		MD - 80.00%		Paid Off - 360		01-Nov-2004
120371528 1					224,800.00			28-Apr-2005		6.500%		MD - 80.00%		Paid Off - 360		01-Nov-2004
120373011 1			300,000.00		298,428.31			04-May-2005		6.750%		CA - 76.92%		Paid Off - 360		01-Nov-2004
120373011 1					298,428.31			04-May-2005		6.750%		CA - 76.92%		Paid Off - 360		01-Nov-2004
120376049 1			139,500.00		139,008.57			19-Apr-2005		8.740%		GA - 90.00%		Paid Off - 360		01-Nov-2004
120376049 1					139,008.57			19-Apr-2005		8.740%		GA - 90.00%		Paid Off - 360		01-Nov-2004
120376152 2			369,000.00		367,506.97			19-Apr-2005		7.125%		CA - 90.00%		Paid Off - 360		01-Dec-2004
120376152 2					367,506.97			19-Apr-2005		7.125%		CA - 90.00%		Paid Off - 360		01-Dec-2004
120376436 1			272,000.00		268,371.53			26-Apr-2005		6.000%		CA - 74.11%		Paid Off - 360		01-Apr-2004
120376436 1					268,371.53			26-Apr-2005		6.000%		CA - 74.11%		Paid Off - 360		01-Apr-2004
120379162 2			337,000.00		335,340.00			11-May-2005		4.900%		CA - 64.19%		Paid Off - 360		01-Jan-2005
120379162 2					335,340.00			11-May-2005		4.900%		CA - 64.19%		Paid Off - 360		01-Jan-2005
120379313 1			168,750.00		168,083.81			20-Apr-2005		7.250%		MD - 84.38%		Paid Off - 360		01-Dec-2004
120379313 1					168,083.81			20-Apr-2005		7.250%		MD - 84.38%		Paid Off - 360		01-Dec-2004
120379704 1			152,325.00		151,817.68			19-Apr-2005		7.250%		CA - 90.00%		Paid Off - 360		01-Jan-2005
120379704 1					151,817.68			19-Apr-2005		7.250%		CA - 90.00%		Paid Off - 360		01-Jan-2005
120379758 1			210,000.00		209,265.75			18-Apr-2005		6.750%		CA - 72.41%		Paid Off - 360		01-Jan-2005
120379758 1					209,265.75			18-Apr-2005		6.750%		CA - 72.41%		Paid Off - 360		01-Jan-2005
120380748 1			315,000.00		314,999.99			02-May-2005		7.750%		CA - 90.00%		Paid Off - 360		01-Jan-2005
120380748 1					314,999.99			02-May-2005		7.750%		CA - 90.00%		Paid Off - 360		01-Jan-2005
120381867 1			157,250.00		156,931.36			03-May-2005		8.000%		CA - 85.00%		Paid Off - 360		01-Feb-2005
120381867 1					156,931.36			03-May-2005		8.000%		CA - 85.00%		Paid Off - 360		01-Feb-2005
120382640 2			360,591.00		359,841.65			27-Apr-2005		7.875%		CA - 95.00%		Paid Off - 360		01-Feb-2005
120382640 2					359,841.65			27-Apr-2005		7.875%		CA - 95.00%		Paid Off - 360		01-Feb-2005
120435245 2			99,750.00		99,750.00			28-Apr-2005		7.625%		FL - 95.00%		Paid Off - 360		01-Oct-2004
120435245 2					99,750.00			28-Apr-2005		7.625%		FL - 95.00%		Paid Off - 360		01-Oct-2004
120435265 1			329,900.00		329,900.00			18-Apr-2005		8.000%		FL - 89.99%		Paid Off - 360		01-Oct-2004
120435265 1					329,900.00			18-Apr-2005		8.000%		FL - 89.99%		Paid Off - 360		01-Oct-2004
120566728 2			568,000.00		568,000.00			13-May-2005		7.000%		VA - 79.63%		Paid Off - 360		01-Jan-2005
120566728 2					568,000.00			13-May-2005		7.000%		VA - 79.63%		Paid Off - 360		01-Jan-2005
120573747 1			327,250.00		326,516.83			27-Apr-2005		7.500%		NJ - 85.00%		Paid Off - 360		01-Feb-2005
120573747 1					326,516.83			27-Apr-2005		7.500%		NJ - 85.00%		Paid Off - 360		01-Feb-2005
120578778 1			140,000.00		140,000.00			03-May-2005		7.000%		FL - 80.00%		Paid Off - 360		01-Mar-2005
120578778 1					140,000.00			03-May-2005		7.000%		FL - 80.00%		Paid Off - 360		01-Mar-2005
120605780 1			215,000.00		214,223.65			04-May-2005		6.500%		CA - 64.18%		Paid Off - 360		01-Feb-2005
120605780 1					214,223.65			04-May-2005		6.500%		CA - 64.18%		Paid Off - 360		01-Feb-2005
120633819 1			257,500.00		256,235.77			26-Apr-2005		6.125%		CA - 79.97%		Paid Off - 360		01-Dec-2004
120633819 1					256,235.77			26-Apr-2005		6.125%		CA - 79.97%		Paid Off - 360		01-Dec-2004
120645527 1			135,360.00		135,112.25			02-May-2005		8.500%		NV - 90.00%		Paid Off - 360		01-Feb-2005
120645527 1					135,112.25			02-May-2005		8.500%		NV - 90.00%		Paid Off - 360		01-Feb-2005
120646023 1			135,360.00		135,105.84			04-May-2005		8.375%		NV - 90.00%		Paid Off - 360		01-Feb-2005
120646023 1					135,105.84			04-May-2005		8.375%		NV - 90.00%		Paid Off - 360		01-Feb-2005
120688035 1			268,000.00		267,369.01			05-May-2005		7.250%		IL - 80.00%		Paid Off - 360		01-Feb-2005
120688035 1					267,369.01			05-May-2005		7.250%		IL - 80.00%		Paid Off - 360		01-Feb-2005
120691667 1			395,000.00		394,426.40			27-Apr-2005		7.625%		NJ - 52.67%		Paid Off - 360		01-Mar-2005
120691667 1					394,426.40			27-Apr-2005		7.625%		NJ - 52.67%		Paid Off - 360		01-Mar-2005
120703084 1			154,000.00		154,000.00			03-May-2005		6.625%		VA - 61.60%		Paid Off - 360		01-Feb-2005
120703084 1					154,000.00			03-May-2005		6.625%		VA - 61.60%		Paid Off - 360		01-Feb-2005
120707231 1			171,480.00		171,180.00			19-Apr-2005		7.250%		IL - 80.00%		Paid Off - 360		01-Feb-2005
120707231 1					171,180.00			19-Apr-2005		7.250%		IL - 80.00%		Paid Off - 360		01-Feb-2005
120707442 2			210,000.00		209,823.13			21-Apr-2005		10.250%		CA - 64.22%		Paid Off - 360		01-Mar-2005
120707442 2					209,823.13			21-Apr-2005		10.250%		CA - 64.22%		Paid Off - 360		01-Mar-2005
120710590 2			75,000.00		74,904.84			21-Apr-2005		10.250%		FL - 25.00%		Paid Off - 360		01-Feb-2005
120710590 2					74,904.84			21-Apr-2005		10.250%		FL - 25.00%		Paid Off - 360		01-Feb-2005
120711201 1			119,000.00		119,000.00			30-Apr-2005		10.250%		MO - 79.33%		Paid Off - 360		01-May-2005
120711201 1					119,000.00			30-Apr-2005		10.250%		MO - 79.33%		Paid Off - 360		01-May-2005
120723138 1			110,400.00		110,239.69			10-May-2005		7.625%		SC - 79.71%		Paid Off - 360		01-Mar-2005
120723138 1					110,239.69			10-May-2005		7.625%		SC - 79.71%		Paid Off - 360		01-Mar-2005
120739258 1			316,350.00		315,957.64			26-Apr-2005		8.500%		VA - 95.00%		Paid Off - 360		01-Mar-2005
120739258 1					315,957.64			26-Apr-2005		8.500%		VA - 95.00%		Paid Off - 360		01-Mar-2005
120754523 1			124,785.00		124,651.69			20-Apr-2005		9.125%		FL - 90.00%		Paid Off - 360		01-Mar-2005
120754523 1					124,651.69			20-Apr-2005		9.125%		FL - 90.00%		Paid Off - 360		01-Mar-2005
120781559 1			292,880.00		292,880.00			02-May-2005		6.875%		VA - 80.00%		Paid Off - 360		01-Dec-2004
120781559 1					292,880.00			02-May-2005		6.875%		VA - 80.00%		Paid Off - 360		01-Dec-2004
120781898 1			186,400.00		186,400.00			28-Apr-2005		8.125%		NV - 80.00%		Paid Off - 360		01-Apr-2005
120781898 1					186,400.00					8.125%		NV - 80.00%		Paid Off - 360



Page 20 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution

Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution
Loan Number			Original							Current		State &		Type Prepayment		First
Loan Number			Original							Current		State &		Type Prepayment

&		Loan	Principal		Prepayment			Prepayment		Note		LTV at		&		Payment

Loan Group		Status	Balance		Amount			Date		Rate		Origination		Original Term		Date

120795489 2			385,000.00		383,569.14			20-Apr-2005		6.400%		NY - 70.00%		Paid Off - 360		01-Jan-2005
			385,000.00

120800808 1			264,000.00		263,447.42			10-May-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120800808 1					263,447.42			10-May-2005		5.750%		CA - 80.00%		Paid Off - 360		01-Mar-2005
120807616 1			42,400.00		42,352.29			20-Apr-2005		8.875%		OH - 80.00%		Paid Off - 360		01-Mar-2005
120807616 1					42,352.29			20-Apr-2005		8.875%		OH - 80.00%		Paid Off - 360		01-Mar-2005
120813259 1			324,000.00		323,765.50			27-Apr-2005		7.625%		CA - 89.01%		Paid Off - 360		01-Apr-2005
120813259 1					323,765.50			27-Apr-2005		7.625%		CA - 89.01%		Paid Off - 360		01-Apr-2005
120813333 2			139,300.00		139,188.81			02-May-2005		10.500%		OR - 70.00%		Paid Off - 360		01-Mar-2005
120813333 2					139,188.81			02-May-2005		10.500%		OR - 70.00%		Paid Off - 360		01-Mar-2005
120813657 1			134,820.00		134,656.07			04-May-2005		8.500%		WA - 90.00%		Paid Off - 360		01-Mar-2005
120813657 1					134,656.07			04-May-2005		8.500%		WA - 90.00%		Paid Off - 360		01-Mar-2005
120819214 2			405,000.00		404,532.28			26-Apr-2005		8.750%		FL - 90.00%		Paid Off - 360		01-Mar-2005
120819214 2					404,532.28			26-Apr-2005		8.750%		FL - 90.00%		Paid Off - 360		01-Mar-2005
120827414 1			143,992.00		143,902.50			29-Apr-2005		8.375%		FL - 79.34%		Paid Off - 360		01-Apr-2005
120827414 1					143,902.50			29-Apr-2005		8.375%		FL - 79.34%		Paid Off - 360		01-Apr-2005
120827890 1			43,200.00		43,200.00			09-May-2005		8.125%		WA - 80.00%		Paid Off - 360		01-May-2005
120827890 1					43,200.00			09-May-2005		8.125%		WA - 80.00%		Paid Off - 360		01-May-2005
120833524 1			127,500.00		127,323.94			20-Apr-2005		7.875%		IL - 75.00%		Paid Off - 360		01-Mar-2005
120833524 1					127,323.94			20-Apr-2005		7.875%		IL - 75.00%		Paid Off - 360		01-Mar-2005
120843437 2			217,000.00		216,489.37			03-May-2005		5.125%		NY - 74.83%		Paid Off - 360		01-Mar-2005
120843437 2					216,489.37			03-May-2005		5.125%		NY - 74.83%		Paid Off - 360		01-Mar-2005
120849945 1			115,000.00		114,674.97			03-May-2005		8.250%		NJ - 69.70%		Paid Off - 180		01-Apr-2005
120849945 1					114,674.97			03-May-2005		8.250%		NJ - 69.70%		Paid Off - 180		01-Apr-2005
120870077 1			156,000.00		155,675.81			09-May-2005		7.875%		RI - 65.00%		Paid Off - 360		01-Feb-2005
120870077 1					155,675.81			09-May-2005		7.875%		RI - 65.00%		Paid Off - 360		01-Feb-2005
120879133 1			95,000.00		94,914.12			29-Apr-2005		6.500%		NJ - 51.35%		Paid Off - 360		01-Apr-2005
120879133 1					94,914.12			29-Apr-2005		6.500%		NJ - 51.35%		Paid Off - 360		01-Apr-2005
120880068 1			102,400.00		102,311.84			11-May-2005		6.750%		GA - 80.00%		Paid Off - 360		01-Apr-2005
120880068 1					102,311.84			11-May-2005		6.750%		GA - 80.00%		Paid Off - 360		01-Apr-2005
120922156 2			378,000.00		377,793.53			03-May-2005		9.000%		CA - 90.00%		Paid Off - 360		01-Apr-2005
120922156 2					377,793.53			03-May-2005		9.000%		CA - 90.00%		Paid Off - 360		01-Apr-2005
120969863 1			110,500.00		110,500.00			10-May-2005		6.875%		IL - 69.06%		Paid Off - 360		01-May-2005
120969863 1					110,500.00			10-May-2005		6.875%		IL - 69.06%		Paid Off - 360		01-May-2005
120980616 1			26,100.00		26,080.64			29-Apr-2005		7.500%		MI - 90.00%		Paid Off - 360		01-Apr-2005
120980616 1					26,080.64			29-Apr-2005		7.500%		MI - 90.00%		Paid Off - 360		01-Apr-2005
120989803 1			136,068.00		135,978.99			28-Apr-2005		8.125%		FL - 86.77%		Paid Off - 360		01-Apr-2005
120989803 1					135,978.99			28-Apr-2005		8.125%		FL - 86.77%		Paid Off - 360		01-Apr-2005
121166212 2			78,075.00		78,075.00			28-Apr-2005		8.875%		MI - 90.00%		Paid Off - 360		01-Jun-2005
121166212 2					78,075.00			28-Apr-2005		8.875%		MI - 90.00%		Paid Off - 360		01-Jun-2005
121057129 1			110,000.00		110,000.00			00-Jan-1900		5.875%		FL - 50.48%		Repur/Subs - 360		01-May-2005
121057129 1					110,000.00			00-Jan-1900		5.875%		FL - 50.48%		Repur/Subs - 360		01-May-2005
121089853 1			56,000.00		56,000.00			00-Jan-1900		7.875%		AL - 72.73%		Repur/Subs - 360		01-May-2005
121089853 1					56,000.00			00-Jan-1900		7.875%		AL - 72.73%		Repur/Subs - 360		01-May-2005
121094363 1			91,000.00		91,000.00			00-Jan-1900		8.375%		FL - 70.00%		Repur/Subs - 360		01-Jun-2005
121094363 1					91,000.00			00-Jan-1900		8.375%		FL - 70.00%		Repur/Subs - 360		01-Jun-2005
121129627 1			160,944.00		160,944.00			00-Jan-1900		6.250%		FL - 80.00%		Repur/Subs - 360		01-May-2005
121129627 1					160,944.00			00-Jan-1900		6.250%		FL - 80.00%		Repur/Subs - 360		01-May-2005
121156463 2			86,880.00		86,880.00			00-Jan-1900		7.375%		TX - 80.00%		Repur/Subs - 360		01-May-2005
121156463 2					86,880.00			00-Jan-1900		7.375%		TX - 80.00%		Repur/Subs - 360		01-May-2005
121156641 2			99,900.00		99,900.00			06-May-2005		9.750%		MI - 90.00%		Repur/Subs - 360		01-May-2005
121156641 2					99,900.00			06-May-2005		9.750%		MI - 90.00%		Repur/Subs - 360		01-May-2005
121162274 1			159,600.00		159,600.00			00-Jan-1900		11.000%		PA - 70.00%		Repur/Subs - 360		01-May-2005
121162274 1					159,600.00			00-Jan-1900		11.000%		PA - 70.00%		Repur/Subs - 360		01-May-2005
121170929 1			126,400.00		126,400.00			00-Jan-1900		8.750%		MA - 80.00%		Repur/Subs - 360		01-Jun-2005
121170929 1					126,400.00			00-Jan-1900		8.750%		MA - 80.00%		Repur/Subs - 360		01-Jun-2005


TOTAL			13,012,885.00		12,985,042.95
TOTAL


Page 21 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Realized Loss Report

COLLATERAL REALIZED LOSSES



											Group 2		Group 1		Total


Current
Current



Number of Loans Liquidated										0		0		0
Collateral Principal Realized Loss/(Gain) Amount										0.00		0.00		0.00
Collateral Interest Realized Loss/(Gain) Amount										0.00		0.00		0.00
Net Liquidation Proceeds										0.00		0.00		0.00

Cumulative
Cumulative



Number of Loans Liquidated										0		0		0
Collateral Realized Loss/(Gain) Amount										0.00		0.00		0.00
Net Liquidation Proceeds										0.00		0.00		0.00






		Class C Writedown Amount														0.00
		Class M-11 Writedown Amount														0.00
		Class M-10 Writedown Amount														0.00
		Class M-9 Writedown Amount														0.00
		Class M-8 Writedown Amount														0.00
		Class M-7 Writedown Amount														0.00
		Class M-6 Writedown Amount														0.00
		Class M-5 Writedown Amount														0.00
		Class M-4 Writedown Amount														0.00
		Class M-3 Writedown Amount														0.00
		Class M-2 Writedown Amount														0.00
		Class M-1 Writedown Amount														0.00







Page 22 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution



DEFAULT SPEEDS
DEFAULT SPEEDS

											Group 2		Group 1		Total



MDR										0.00%		0.00%		0.00%
3 Months Avg MDR										0.00%		0.00%		0.00%
12 Months Avg MDR										0.00%		0.00%		0.00%
Avg MDR Since Cut-off										0.00%		0.00%		0.00%


CDR										0.00%		0.00%		0.00%
3 Months Avg CDR										0.00%		0.00%		0.00%
12 Months Avg CDR										0.00%		0.00%		0.00%
Avg CDR Since Cut-off										0.00%		0.00%		0.00%


SDA										0.00%		0.00%		0.00%
3 Months Avg SDA Approximation										0.00%		0.00%		0.00%
12 Months Avg SDA Approximation										0.00%		0.00%		0.00%
Avg SDA Since Cut-off Approximation										0.00%		0.00%		0.00%


Loss Severity Approximation for Current Period										0.00%		0.00%		0.00%
3 Months Avg Loss Severity Approximation										0.00%		0.00%		0.00%
12 Months Avg Loss Severity Approximation										0.00%		0.00%		0.00%
Avg Loss Severity Approximation Since Cut-off										0.00%		0.00%		0.00%







Page 23 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution








Page 24 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution



COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY
	Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)



	Conditional Default Rate (CDR): 1-((1-MDR)^12)

	SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)0.02,MAX(0.03,MIN(30,WAS)0.02-0.0095*(WAS-60)))

	Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn)(1-MDRn+1)...*(1-MDRm)]^(1/months in period n,m)
	Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)

	Average SDA Approximation over period between the nth month and mth month:
	AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)0.02,MAX(0.03,MIN(30,Avg WASn,m)0.02-0.0095*(Avg WASn,m-60)))

	Average WASn,m: (WASn + WASn+1 +...+ WASm )/(number of months in the period n,m)
	Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

	Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)

	Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.
	Dates correspond to distribution dates.




Page 25 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Realized Loss Detail Report
Loan Number			Current		State &				Prior		Realized				Cumulative
															Cumulative
&		Loan	Note		LTV at		Original		Principal		Loss/(Gain)		Realized		Realized

Loan Group		Status	Rate		Origination		Term		Balance		Revision		Loss/(Gain)		Loss/(Gain)
Loan Group		Status	Rate		Origination		Term		Balance		Revision		Loss/(Gain)		Loss/(Gain)




TOTAL



Page 26 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
										Group 2		Group 1		Total
						Stepdown Date has occurred (0 = No, 1=Yes)								0
						Does a Trigger Event Exist-Either a) or b) Yes?								0
						Does a Loss Trigger Event Exists (0=No,1=Yes)								0
						60+ days Delinqueny Bal.-3M Rolling Avg.								247,179.67
						Ending Collateral Balance
						Delinquency Percentage								0.0300%
						Beginning Balance of Mezzanine and C Class
						Beginning Collateral Balance
						Credit Enhancement Percentage								19.1900%
						Cumulative Loss Percentage								0.0000%



ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK



ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
										Group 2		Group 1		Total

Cap Contract Payments														0.00




Page 27 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Additional Certificate Report

ADDITIONAL CERTIFICATE REPORT

													NET WAC Shortfall CarryOver		NET WAC Shortfall Paid
CLASS

			A-I-1										$0.00		$0.00
													$0.00		$0.00
			A-I-2										$0.00		$0.00
													$0.00		$0.00
			A-II-1										$0.00		$0.00
													$0.00		$0.00
			A-II-2										$0.00		$0.00
													$0.00		$0.00
			A-II-3										$0.00		$0.00
													$0.00		$0.00
			M-1										$0.00		$0.00
													$0.00		$0.00
			M-2										$0.00		$0.00
													$0.00		$0.00
			M-3										$0.00		$0.00
													$0.00		$0.00
			M-4										$0.00		$0.00
													$0.00		$0.00
			M-5										$0.00		$0.00
													$0.00		$0.00
			M-6										$0.00		$0.00
													$0.00		$0.00
			M-7										$0.00		$0.00
													$0.00		$0.00
			M-8										$0.00		$0.00
													$0.00		$0.00
			M-9										$0.00		$0.00
													$0.00		$0.00
			M-10										$0.00		$0.00
													$0.00		$0.00
			M-11										$0.00		$0.00
													$0.00		$0.00




Page 28 of 29
IndyMac INABS 2005-A

Multifamily Mortgage Pass-Through Certificates
Multifamily Mortgage Pass-Through Certificates
2005-A

May 25, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
										Group 2		Group 1		Total
Sched. Payments for 60+Day Delinquent Loans										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior										0.00		0.00		0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior										0.00		0.00		0.00



Current Scheduled Payments														6,517,448.87
Current Scheduled Payments 1 Month Prior														5,008,212.83
Current Scheduled Payments 2 Month Prior														0.00
Current Scheduled Payments 3 Month Prior														0.00
Current Scheduled Payments 4 Month Prior														0.00
Current Scheduled Payments 5 Month Prior														0.00
Current Scheduled Payments 6 Month Prior														0.00
Current Scheduled Payments 7 Month Prior														0.00
Current Scheduled Payments 8 Month Prior														0.00
Current Scheduled Payments 9 Month Prior														0.00
Current Scheduled Payments 10 Month Prior														0.00
Current Scheduled Payments 11 Month Prior														0.00




Page 29 of 29

Home Equity Mortgage Loan Asset Backed Trust Series 2005-A 8-K