
                                       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):  December 27, 2004
                          (Date of earliest event reported)

            Indymac MBS Inc (as Depositor under the Pooling and Servicing
            Agreement, dated as June 1, 2004, providing for the issuance
            of IndyMac MBS, Inc. Home Equity Mortgage Loan Asset-Backed
            Trust Series SPMD 2004-A Home Equity Mortgage Loan Asset-
                       Backed Certificates SPMD 2004-A
                 (Exact name of registrant as specified in charter)

                                       DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-47158-07                         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:  (800) 669-2300


       (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
     December 27, 2004.

                                    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:  Dec 28, 2004               By:  /s/  Katherine M. Wannenmacher
                                            Katherine M. Wannenmacher
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          99.1 Monthly Remittance Statement to the Certificateholders
          dated as of December 27, 2004.



IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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					4
										2. Collection Account Report					4
										3. Credit Enhancement Report					6
										4. Collateral Report					7
				Certificate Insurer(s)						5. Delinquency Report					10
				Certificate Insurer(s)						5. Delinquency Report					10
										6. REO Report					13

										7. Foreclosure Report					14
										8. Prepayment Report					15
										9. Prepayment Detail Report					18
										9. Prepayment Detail Report					18
										10. Realized Loss Report					20
										11. Realized Loss Detail Report					23
				Servicer(s)						11. Realized Loss Detail Report					23
				Servicer(s)						12. Triggers and Adj. Cert. Report					24
				IndyMac Bank						12. Triggers and Adj. Cert. Report					24
				IndyMac Bank						13. Additional Certificate Report					25
										13. Additional Certificate Report					25
										14. Other Related Information					26


				Underwriter(s)
				UBS Securities


										Total Number of Pages					26
										Total Number of Pages

				Dates						Contacts

				Cut-Off Date:			June 01, 2004			Brent Hoyler
				Close Date:			June 08, 2004			Administrator
				First Distribution Date:			July 26, 2004			(714) 247-6322
										Brent.Hoyler@db.com
										Brent.Hoyler@db.com
										Address:
										1761 East St. Andrew Place, Santa Ana, CA 92705
				Distribution Date:			December 27, 2004
										Factor Information:			(800) 735-7777
				Record Date:			November 30, 2004			Factor Information:			(800) 735-7777
										Main Phone Number:			(714) 247-6000

							December 24, 2004
							December 24, 2004

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






Page 1 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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-1	FLT, STEP	$	267,868,000.00		234,415,200.08		500,733.85		9,716,307.79		10,217,041.64		0.00		0.00		224,698,892.29
A-1	FLT, STEP	$	267,868,000.00		234,415,200.08		500,733.85		9,716,307.79		10,217,041.64		0.00		0.00		224,698,892.29
A-2	FLT, STEP	$	52,102,000.00		39,918,146.72		80,456.72		2,510,555.15		2,591,011.87		0.00		0.00		37,407,591.57
A-3	FLT, STEP	$	37,780,000.00		37,780,000.00		86,557.68		0.00		86,557.68		0.00		0.00		37,780,000.00
M-1	MEZ, FLT	$	28,125,000.00		28,125,000.00		67,827.76		0.00		67,827.76		0.00		0.00		28,125,000.00
M-2	MEZ, FLT	$	22,050,000.00		22,050,000.00		67,037.84		0.00		67,037.84		0.00		0.00		22,050,000.00
M-3	MEZ, FLT	$	5,625,000.00		5,625,000.00		18,070.24		0.00		18,070.24		0.00		0.00		5,625,000.00
M-4	MEZ, FLT	$	11,700,000.00		11,700,000.00		47,157.35		0.00		47,157.35		0.00		0.00		11,700,000.00
M-5	MEZ, FLT	$	4,950,000.00		4,950,000.00		24,213.69		0.00		24,213.69		0.00		0.00		4,950,000.00
M-6	MEZ, FLT	$	4,500,000.00		4,500,000.00		22,012.44		0.00		22,012.44		0.00		0.00		4,500,000.00
M-7	MEZ, FIX	$	8,550,000.00		8,550,000.00		42,750.00		0.00		42,750.00		0.00		0.00		8,550,000.00
C	SUB,EXE	$	6,769,181.65		6,750,287.73		1,286,471.72		0.00		1,286,471.72		0.00		0.00		6,750,287.73
P	SUB	$	100.00		100.00		163,531.41		0.00		163,531.41		0.00		0.00		100.00
R	R	$	0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00


Total			450,019,281.65		404,363,734.53		2,406,820.70		12,226,862.94		14,633,683.64		0.00		0.00		392,136,871.59
Total




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-1	11/26/04		12/26/04		A-Act/360		456606EN8		267,868,000.00		875.114609		1.869331		36.272745		38.142076	838.841863
A-2	11/26/04		12/26/04		A-Act/360		456606EP3		52,102,000.00		766.153827		1.544216		48.185389		49.729605	717.968438
A-3	11/26/04		12/26/04		A-Act/360		456606EX6		37,780,000.00		1,000.000000		2.291098		0.000000		2.291098	1,000.000000
M-1	11/26/04		12/26/04		A-Act/360		456606EQ1		28,125,000.00		1,000.000000		2.411654		0.000000		2.411654	1,000.000000
M-2	11/26/04		12/26/04		A-Act/360		456606ER9		22,050,000.00		1,000.000000		3.040265		0.000000		3.040265	1,000.000000
M-3	11/26/04		12/26/04		A-Act/360		456606ES7		5,625,000.00		1,000.000000		3.212487		0.000000		3.212487	1,000.000000
M-4	11/26/04		12/26/04		A-Act/360		456606ET5		11,700,000.00		1,000.000000		4.030543		0.000000		4.030543	1,000.000000
M-5	11/26/04		12/26/04		A-Act/360		456606EU2		4,950,000.00		1,000.000000		4.891655		0.000000		4.891655	1,000.000000
M-6	11/26/04		12/26/04		A-Act/360		456606EV0		4,500,000.00		1,000.000000		4.891653		0.000000		4.891653	1,000.000000
M-7	11/25/04		12/24/04		F-30/360		456606EW8		8,550,000.00		1,000.000000		5.000000		0.000000		5.000000	1,000.000000
C	11/25/04		12/24/04		F-30/360		IN04S101C		6,769,181.65		997.208832		190.048338		0.000000		190.048338	997.208832
P	11/25/04		12/24/04		F-30/360		IN04S101P		100.00		1,000.000000		1,635,314.100000		0.000000		1,635,314.100000	1,000.000000
R	11/25/04		12/24/04		F-30/360		IN04S101R		0.00		0.000000		0.000000		0.000000		0.000000	0.000000




Page 2 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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-1	267,868,000.00		2,755,603.22		41,669,617.35		1,499,490.36		43,169,107.71		45,924,710.93		0.00		0.00		224,698,892.29
A-2	52,102,000.00		454,765.97		14,172,296.37		522,112.06		14,694,408.43		15,149,174.40		0.00		0.00		37,407,591.57
A-3	37,780,000.00		451,675.14		0.00		0.00		0.00		451,675.14		0.00		0.00		37,780,000.00
M-1	28,125,000.00		358,339.48		0.00		0.00		0.00		358,339.48		0.00		0.00		28,125,000.00
M-2	22,050,000.00		371,257.40		0.00		0.00		0.00		371,257.40		0.00		0.00		22,050,000.00
M-3	5,625,000.00		101,021.02		0.00		0.00		0.00		101,021.02		0.00		0.00		5,625,000.00
M-4	11,700,000.00		272,491.23		0.00		0.00		0.00		272,491.23		0.00		0.00		11,700,000.00
M-5	4,950,000.00		143,059.75		0.00		0.00		0.00		143,059.75		0.00		0.00		4,950,000.00
M-6	4,500,000.00		130,054.32		0.00		0.00		0.00		130,054.32		0.00		0.00		4,500,000.00
M-7	8,550,000.00		256,500.00		0.00		0.00		0.00		256,500.00		0.00		0.00		8,550,000.00
C	6,769,181.65		8,961,963.12		18,160.52		733.40		18,893.92		8,980,857.04		0.00		0.00		6,750,287.73
P	100.00		659,812.92		0.00		0.00		0.00		659,812.92		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	450,019,281.65		14,916,543.57		55,860,074.24		2,022,335.82		57,882,410.06		72,798,953.63		0.00		0.00		392,136,871.59


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-1	2.48063%		234,415,200.08		500,733.85		0.00		0.00		0.00		500,733.85		500,733.85		0.00
A-2	2.34063%		39,918,146.72		80,456.72		0.00		0.00		0.00		80,456.72		80,456.72		0.00
A-3	2.66063%		37,780,000.00		86,557.68		0.00		0.00		0.00		86,557.68		86,557.68		0.00
M-1	2.80063%		28,125,000.00		67,827.76		0.00		0.00		0.00		67,827.76		67,827.76		0.00
M-2	3.53063%		22,050,000.00		67,037.84		0.00		0.00		0.00		67,037.84		67,037.84		0.00
M-3	3.73063%		5,625,000.00		18,070.24		0.00		0.00		0.00		18,070.24		18,070.24		0.00
M-4	4.68063%		11,700,000.00		47,157.35		0.00		0.00		0.00		47,157.35		47,157.35		0.00
M-5	5.68063%		4,950,000.00		24,213.69		0.00		0.00		0.00		24,213.69		24,213.69		0.00
M-6	5.68063%		4,500,000.00		22,012.44		0.00		0.00		0.00		22,012.44		22,012.44		0.00
M-7	6.00000%		8,550,000.00		42,750.00		0.00		0.00		0.00		42,750.00		42,750.00		0.00
C	228.69633%		6,750,287.73		107,205.98		0.00		0.00		0.00		107,205.98		1,286,471.72		0.00
P	0.00000%		100.00		0.00		0.00		0.00		0.00		0.00		163,531.41		0.00
R	0.00000%		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00


Total			404,363,734.53		1,064,023.55		0.00		0.00		0.00		1,064,023.55		2,406,820.70		0.00



Page 3 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Collection Account Report
SUMMARY
SUMMARY
										Group 2		Group 1		Total
Principal Collections										2,510,555.15		9,716,307.79		12,226,862.94
Principal Withrawals										0.00		0.00		0.00
Principal Other Accounts										0.00		0.00		0.00
TOTAL NET PRINCIPAL										2,510,555.15		9,716,307.79		12,226,862.94
Interest Collections										555,942.06		1,706,674.19		2,262,616.25
Interest Withdrawals										-0.00		-0.00		-0.00
Interest Other Accounts										0.00		0.00		163,531.41
Interest Fees										-5,016.86		-14,310.10		-19,326.96
TOTAL NET INTEREST										550,925.20		1,692,364.09		2,406,820.70
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION										3,061,480.35		11,408,671.88		14,633,683.64



PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
											Group 2		Group 1		Total
Scheduled Principal Received											73,376.15		250,212.13		323,588.28
Prepayments In Full											2,435,445.62		9,034,897.17		11,470,342.79
Curtailments											1,733.38		8,265.16		9,998.54
Liquidations											0.00		0.00		0.00
Insurance Principal											0.00		0.00		0.00
Repurchased Principal Amounts											0.00		422,933.33		422,933.33
Other Principal											0.00		0.00		0.00
Total Realized Loss Of Principal											-0.00		-0.00		-0.00
Delinquent Principal											-67,216.23		-232,160.17		-299,376.40
Advanced Principal											67,216.23		232,160.17		299,376.40
TOTAL PRINCIPAL COLLECTED											2,510,555.15		9,716,307.79		12,226,862.94


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 4 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution

INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
										Group 2		Group 1		Total
Scheduled Interest										593,299.69		1,818,279.60		2,411,579.29
Liquidation Interest										0.00		0.00		0.00
Repurchased Interest										0.00		2,553.64		2,553.64
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										-2,295.75		-7,843.64		-10,139.40
Compensating Interest										2,295.75		7,843.64		10,139.40
Delinquent Interest										-530,141.99		-1,643,812.39		-2,173,954.38
Interest Advanced										492,784.37		1,529,653.34		2,022,437.71
TOTAL INTEREST COLLECTED										555,942.06		1,706,674.19		2,262,616.25


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



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
										Group 2		Group 1		Total
Prepayment Charges														163,531.41
TOTAL INTEREST OTHER ACCOUNTS										0.00		0.00		163,531.41



INTEREST - FEES
INTEREST - FEES
										Group 2		Group 1		Total
Current Servicing Fees										4,431.81		12,536.36		16,968.17
Current Trustee Fees										585.05		1,773.74		2,358.79
TOTAL INTEREST OTHER FEES										5,016.86		14,310.10		19,326.96




Page 5 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Credit Enhancement Report

ACCOUNTS


Excess Reserve Fund Account

Initial Deposit						5,000.00
Begining Balance						5,000.00
Amount Withdrawn						0.00
Ending Balance						5,000.00




INSURANCE

SPACE INTENTIONALLY LEFT BLANK



STRUCTURAL FEATURES
STRUCTURAL FEATURES
										Group 2		Group 1		Total
Overcollateralized Amount														6,750,287.73
Overcollateralization Target Amount														6,750,287.73
Overcollateralization Release Amount														0.00
Overcollateralization Deficiency Amount														0.00



Page 6 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Collateral Report


COLLATERAL



											Group 2		Group 1		Total



*Loan Count:*


Original										415		2,270		2,685
Prior										379		2,092		2,471
Prefunding										0		0		0
Scheduled Paid Offs										-0		-0		-0
Full Voluntary Prepayments										-7		-51		-58
Repurchases										-0		-2		-2
Liquidations										-0		-0		-0
Current										372		2,039		2,411
*Principal Balance:*


Original										112,487,722.90		337,531,458.75		450,019,181.65
Prior										100,294,633.68		304,069,000.85		404,363,634.53
Prefunding										0.00		0.00		0.00
Scheduled Principal										-73,376.15		-250,212.13		-323,588.28
Partial Prepayments										#######		-8,265.16		-9,998.54
Full Voluntary Prepayments										-2,435,445.62		-9,034,897.17		-11,470,342.79
Repurchases										-0.00		-422,933.33		-422,933.33
Liquidations										-0.00		-0.00		-0.00
Current										97,784,078.53		294,352,693.06		392,136,771.59





PREFUNDING

SPACE INTENTIONALLY LEFT BLANK






Page 7 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution

CHARACTERISTICS
CHARACTERISTICS
										Group 2		Group 1		Total
Weighted Average Coupon Original										7.09577%		7.21305%		7.18374%
Weighted Average Coupon Prior										7.10350%		7.18914%		7.16813%
Weighted Average Coupon Current										7.09868%		7.18587%		7.16424%
Weighted Average Months to Maturity Original										354		351		352
Weighted Average Months to Maturity Prior										351		346		348
Weighted Average Months to Maturity Current										350		345		346
Weighted Avg Remaining Amortization Term Original										354		351		352
Weighted Avg Remaining Amortization Term Prior										351		346		348
Weighted Avg Remaining Amortization Term Current										350		345		346
Weighted Average Seasoning Original										3.12		3.56		3.45
Weighted Average Seasoning Prior										7.08		7.50		7.40
Weighted Average Seasoning Current										8.08		8.49		8.39









Page 8 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
										Group 2		Group 1		Total
Weighted Average Margin Original										4.97647%		5.13259%		5.09297%
Weighted Average Margin Prior										5.02872%		5.12471%		5.10091%
Weighted Average Margin Current										5.02807%		5.13705%		5.10983%
Weighted Average Max Rate Original										13.01803%		13.16793%		13.12989%
Weighted Average Max Rate Prior										13.03375%		13.14799%		13.11967%
Weighted Average Max Rate Current										13.02712%		13.14825%		13.11799%
Weighted Average Min Rate Original										5.01474%		5.16428%		5.12633%
Weighted Average Min Rate Prior										5.08177%		5.15377%		5.13592%
Weighted Average Min Rate Current										5.08184%		5.16488%		5.14414%
Weighted Average Cap Up Original										1.04950%		1.03527%		1.03889%
Weighted Average Cap Up Prior										1.04735%		1.03766%		1.04006%
Weighted Average Cap Up Current										1.04799%		1.03653%		1.03939%
Weighted Average Cap Down Original										1.04950%		1.03527%		1.03889%
Weighted Average Cap Down Prior										1.04735%		1.03766%		1.04006%
Weighted Average Cap Down Current										1.04799%		1.03653%		1.03939%




SERVICING FEES & ADVANCES

											Group 2		Group 1		Total




Current Servicing Fees										4,431.81		12,536.36		16,968.17
Delinquent Servicing Fees										37,357.62		114,159.05		151,516.68
TOTAL SERVICING FEES										41,789.43		126,695.42		168,484.85


Compensating Interest										-2,295.75		-7,843.64		-10,139.40
Delinquent Servicing Fees										-37,357.62		-114,159.05		-151,516.68
COLLECTED SERVICING FEES										7,785.49		-5,388.52		6,828.78


Aggregate Advances with respect to this Distribution										560,000.60		1,761,813.51		2,321,814.11





ADDITIONAL COLLATERAL INFORMATION
										Group 2		Group 1		Total
Net Prepayment Interest Shortfall										0.00		0.00		0.00
Libor For Current Period														2.1806%

Total Net Monthly Excess Cashflow														1,286,471.72




Page 9 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				14,911,899.70		4,485,434.40		5,388,420.93		24,785,755.03
			% Balance				3.80%		1.14%		1.37%		6.32%
			# Loans				95		34		29		158
			% # Loans				3.94%		1.41%		1.20%		6.55%
	FORECLOSURE		Balance		0.00		0.00		0.00		1,845,606.19		1,845,606.19
			% Balance		0.00%		0.00%		0.00%		0.47%		0.47%
			# Loans		0		0		0		18		18
			% # Loans		0.00%		0.00%		0.00%		0.75%		0.75%
	BANKRUPTCY		Balance		1,071,767.83		0.00		0.00		0.00		1,071,767.83
			% Balance		0.27%		0.00%		0.00%		0.00%		0.27%
			# Loans		10		0		0		0		10
			% # Loans		0.41%		0.00%		0.00%		0.00%		0.41%
	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		1,071,767.83		14,911,899.70		4,485,434.40		7,234,027.12		27,703,129.05
			% Balance		0.27%		3.80%		1.14%		1.84%		7.06%
			# Loans		10		95		34		47		186
			% # Loans		0.41%		3.94%		1.41%		1.95%		7.71%









Page 10 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution


	GROUP 1
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				10,784,310.29		3,651,278.29		2,899,186.30		17,334,774.88
			% Balance				3.66%		1.24%		0.98%		5.89%
			# Loans				78		31		21		130
			% # Loans				3.83%		1.52%		1.03%		6.38%
	FORECLOSURE		Balance		0.00		0.00		0.00		1,799,599.79		1,799,599.79
			% Balance		0.00%		0.00%		0.00%		0.61%		0.61%
			# Loans		0		0		0		17		17
			% # Loans		0.00%		0.00%		0.00%		0.83%		0.83%
	BANKRUPTCY		Balance		1,071,767.83		0.00		0.00		0.00		1,071,767.83
			% Balance		0.36%		0.00%		0.00%		0.00%		0.36%
			# Loans		10		0		0		0		10
			% # Loans		0.49%		0.00%		0.00%		0.00%		0.49%
	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		1,071,767.83		10,784,310.29		3,651,278.29		4,698,786.09		20,206,142.50
			% Balance		0.36%		3.66%		1.24%		1.60%		6.86%
			# Loans		10		78		31		38		157
			% # Loans		0.49%		3.83%		1.52%		1.86%		7.70%










Page 11 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution

	GROUP 2
					< 1 PAYMENT		1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance				4,127,589.41		834,156.11		2,489,234.63		7,450,980.15
			% Balance				4.22%		0.85%		2.55%		7.62%
			# Loans				17		3		8		28
			% # Loans				4.57%		0.81%		2.15%		7.53%
	FORECLOSURE		Balance		0.00		0.00		0.00		46,006.40		46,006.40
			% Balance		0.00%		0.00%		0.00%		0.05%		0.05%
			# Loans		0		0		0		1		1
			% # Loans		0.00%		0.00%		0.00%		0.27%		0.27%
	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		4,127,589.41		834,156.11		2,535,241.03		7,496,986.55
			% Balance		0.00%		4.22%		0.85%		2.59%		7.67%
			# Loans		0		17		3		9		29
			% # Loans		0.00%		4.57%		0.81%		2.42%		7.80%









Page 12 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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
SPACE INTENTIONALLY LEFT BLANK
SPACE INTENTIONALLY LEFT BLANK



TOTAL



Page 13 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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
2151877 1
2151877 1			84,600.00		86,903.53		01-May-2004		8.250%		OH - 90.00%		360		01-Dec-2002

2153415 1			60,350.00		59,187.47		01-Jun-2004		7.000%		OH - 85.00%		180		02-Feb-2003
2546253 1			86,250.00		84,974.61		01-Jun-2004		7.250%		IA - 75.00%		360		01-Jul-2003
3159436 1			200,000.00		198,316.96		01-May-2004		7.000%		MA - 70.18%		360		01-Feb-2004
3263916 1			30,800.00		30,687.74		01-May-2004		12.375%		MI - 70.00%		360		01-Dec-2003
3335536 1			150,000.00		149,013.36		01-Jun-2004		8.250%		MO - 84.99%		360		01-Mar-2004
3338859 1			60,000.00		59,798.04		01-May-2004		10.375%		OH - 44.44%		360		01-May-2004
3427420 1			70,200.00		69,923.29		01-Jun-2004		9.750%		TN - 90.00%		360		01-May-2004
3485540 1			88,000.00		87,478.97		01-Jun-2004		7.625%		CA - 58.67%		360		01-May-2004
3526624 1			50,000.00		48,961.36		01-Jun-2004		9.500%		IA - 83.33%		180		01-May-2004
3591999 1			211,200.00		209,980.21		01-May-2004		7.750%		TX - 84.48%		360		01-May-2004
3600186 1			105,000.00		104,639.30		01-May-2004		9.625%		FL - 72.41%		360		01-Jun-2004
3707833 1			248,000.00		246,442.77		01-May-2004		6.625%		FL - 80.00%		360		01-Jun-2004
3708421 1			164,300.00		163,830.77		01-May-2004		10.500%		FL - 66.79%		360		01-Jun-2004
3754465 1			116,250.00		115,774.14		01-Jun-2004		8.000%		GA - 75.00%		360		01-Jul-2004
3765773 1			30,000.00		29,882.66		01-May-2004		9.000%		MI - 75.00%		360		01-Jun-2004
3772351 1			54,000.00		53,804.61		01-Jun-2004		9.375%		KS - 74.48%		360		01-Jun-2004
3886051 1			233,750.00		0.00		01-Dec-2004		6.625%		MA - 85.00%		360		01-Apr-2004
3714101 2			46,125.00		46,006.40		01-Jun-2004		10.250%		OK - 75.00%		360		01-Jul-2004


TOTAL			2,088,825.00		1,845,606.19



Page 14 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

											Group 2		Group 1		Total




*Current*


Number of Paid in Full Loans										7		51		58
Number of Repurchased Loans										0		2		2
Total Number of Loans Prepaid in Full										7		53		60
Curtailments Amount										1,733.38		8,265.16		9,998.54
Paid in Full Balance										2,435,445.62		9,034,897.17		11,470,342.79
Repurchased Loans Balance										0.00		422,933.33		422,933.33
Total Prepayment Amount										2,437,179.00		9,466,095.66		11,903,274.66

*Cumulative*


Number of Paid in Full Loans										43		224		267
Number of Repurchased Loans										0		7		7
Total Number of Loans Prepaid in Full										43		231		274
Paid in Full Balance										14,229,941.15		40,439,909.85		54,669,851.00
Repurchased Loans Balance										0.00		1,094,644.05		1,094,644.05
Curtailments Amount										22,246.32		73,332.87		95,579.19
Total Prepayment Amount										14,252,187.47		41,607,886.77		55,860,074.24










Page 15 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

											Group 2		Group 1		Total



SMM										2.43%		3.12%		2.95%
3 Months Avg SMM										2.09%		2.65%		2.51%
12 Months Avg SMM										2.24%		2.18%		2.19%
Avg SMM Since Cut-off										2.24%		2.18%		2.19%


CPR										25.58%		31.60%		30.15%
3 Months Avg CPR										22.36%		27.58%		26.32%
12 Months Avg CPR										23.78%		23.20%		23.35%
Avg CPR Since Cut-off										23.78%		23.20%		23.35%


PSA										1,582.10%		1,860.65%		1,796.77%
3 Months Avg PSA Approximation										1,579.32%		1,838.14%		1,779.05%
12 Months Avg PSA Approximation										2,126.77%		1,926.98%		1,973.67%
Avg PSA Since Cut-off Approximation										2,126.77%		1,926.98%		1,973.67%










Page 16 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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/(0.002*min(30,WAS))
	PSA Standard Prepayment Model: CPR/(0.002*min(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)
	Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^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)

	Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.
	Dates correspond to distribution dates.




Page 17 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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

3139735 1			293,850.00		290,145.73			03-Dec-2004		5.375%		CA - 90.00%		Paid Off - 360		01/01/2004
3139735 1			293,850.00		290,145.73			03-Dec-2004		5.375%		CA - 90.00%		Paid Off - 360		01/01/2004
3149844 1			270,000.00		267,038.54			12-Dec-2004		6.125%		IL - 94.74%		Paid Off - 360		01/01/2004
3155554 1			216,000.00		214,233.35			03-Dec-2004		7.650%		MO - 90.00%		Paid Off - 360		01/01/2004
3156488 1			97,200.00		96,405.44			29-Nov-2004		7.150%		NC - 90.00%		Paid Off - 360		02/01/2004
3159477 1			184,000.00		182,708.52			02-Dec-2004		7.375%		RI - 89.76%		Paid Off - 360		03/01/2004
3176551 1			231,500.00		228,975.03			01-Dec-2004		6.375%		MD - 77.68%		Paid Off - 360		01/01/2004
3251178 1			78,800.00		78,354.78			16-Nov-2004		9.000%		NJ - 44.02%		Paid Off - 360		02/01/2004
3303577 1			174,000.00		173,630.00			23-Nov-2004		12.000%		NJ - 64.44%		Paid Off - 360		05/01/2004
3309472 1			115,000.00		114,432.14			08-Dec-2004		9.125%		NJ - 67.65%		Paid Off - 360		03/01/2004
3371192 1			244,000.00		242,430.16			17-Nov-2004		7.500%		MD - 80.00%		Paid Off - 360		04/01/2004
3383169 1			120,000.00		119,177.09			22-Nov-2004		6.875%		NJ - 74.07%		Paid Off - 360		04/01/2004
3383933 1			246,500.00		244,809.67			18-Nov-2004		6.875%		CA - 85.00%		Paid Off - 360		04/01/2004
3404823 1			110,700.00		110,028.20			23-Nov-2004		7.500%		KY - 90.00%		Paid Off - 360		04/01/2004
3414199 1			92,000.00		91,427.79			01-Dec-2004		7.375%		FL - 44.55%		Paid Off - 360		04/01/2004
3414798 1			88,000.00		87,745.22			16-Nov-2004		10.750%		NY - 39.11%		Paid Off - 360		05/01/2004
3422272 1			248,400.00		247,000.61			02-Dec-2004		7.875%		CA - 90.00%		Paid Off - 360		04/01/2004
3441971 1			192,000.00		190,876.69			06-Dec-2004		6.990%		CA - 72.73%		Paid Off - 360		05/01/2004
3442824 1			171,000.00		169,769.47			01-Dec-2004		6.625%		NM - 90.00%		Paid Off - 360		04/01/2004
3452549 1			311,000.00		309,158.70			19-Nov-2004		7.625%		CA - 84.97%		Paid Off - 360		04/01/2004
3459508 1			292,000.00		292,000.00			01-Dec-2004		5.750%		CA - 80.00%		Paid Off - 360		04/01/2004
3460482 2			376,000.00		373,581.59			18-Nov-2004		6.500%		NJ - 80.00%		Paid Off - 360		05/01/2004
3461996 1			257,400.00		255,884.29			17-Nov-2004		7.750%		DC - 90.00%		Paid Off - 360		04/01/2004
3467393 1			83,600.00		83,062.27			17-Nov-2004		6.500%		CA - 80.00%		Paid Off - 360		05/01/2004
3483101 1			220,000.00		218,272.69			24-Nov-2004		7.000%		AZ - 68.75%		Paid Off - 360		04/01/2004
3484933 1			193,000.00		192,075.14			17-Nov-2004		8.000%		NJ - 89.77%		Paid Off - 360		05/01/2004
3490202 2			78,000.00		77,670.58			17-Nov-2004		8.625%		NJ - 31.84%		Paid Off - 360		05/01/2004
3491508 2			437,500.00		434,405.16			19-Nov-2004		6.000%		CA - 70.00%		Paid Off - 360		05/01/2004
3498404 1			60,000.00		59,382.30			01-Dec-2004		6.625%		MI - 42.86%		Paid Off - 360		05/01/2004
3503927 1			190,000.00		188,727.60			02-Dec-2004		7.000%		IL - 95.00%		Paid Off - 360		04/01/2004
3504663 2			399,000.00		396,349.42			06-Dec-2004		5.500%		CA - 60.00%		Paid Off - 360		06/01/2004
3508907 2			306,000.00		304,438.87			03-Dec-2004		8.375%		NJ - 90.00%		Paid Off - 360		04/01/2004
3511447 2			341,000.00		341,000.00			02-Dec-2004		6.375%		CA - 94.99%		Paid Off - 360		05/01/2004
3511635 1			155,000.00		153,772.99			03-Dec-2004		6.375%		CA - 62.00%		Paid Off - 360		05/01/2004
3518432 1			240,000.00		239,693.57			23-Nov-2004		5.125%		FL - 80.00%		Paid Off - 360		05/01/2004
3521017 1			131,250.00		130,209.74			07-Dec-2004		6.750%		CA - 75.00%		Paid Off - 360		03/01/2004
3529439 1			280,000.00		277,874.93			02-Dec-2004		5.625%		CA - 80.00%		Paid Off - 360		05/01/2004
3532053 1			256,000.00		254,430.85			08-Dec-2004		6.750%		GA - 80.00%		Paid Off - 360		05/01/2004
3532053 1			256,000.00		254,430.85					6.750%		GA - 80.00%		Paid Off - 360



Page 18 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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

3537609 1			168,000.00		167,088.51			16-Nov-2004		7.375%		NJ - 80.00%		Paid Off - 360		05/01/2004
3537609 1			168,000.00		167,088.51			16-Nov-2004		7.375%		NJ - 80.00%		Paid Off - 360		05/01/2004
3550072 1			188,000.00		186,941.24			06-Dec-2004		6.375%		CA - 80.00%		Paid Off - 360		06/01/2004
3559988 1			155,000.00		154,481.31			01-Dec-2004		9.750%		MA - 63.79%		Paid Off - 360		05/01/2004
3568132 2			508,000.00		508,000.00			24-Nov-2004		5.000%		CA - 80.00%		Paid Off - 360		05/01/2004
3593136 1			256,000.00		254,101.92			22-Nov-2004		5.750%		CA - 89.82%		Paid Off - 360		05/01/2004
3606704 1			283,000.00		281,552.86			01-Dec-2004		6.875%		VA - 79.94%		Paid Off - 360		06/01/2004
3617434 1			124,800.00		124,147.75			17-Nov-2004		8.250%		MI - 80.00%		Paid Off - 360		04/01/2004
3622512 1			116,000.00		115,406.82			23-Nov-2004		6.875%		FL - 80.00%		Paid Off - 360		06/01/2004
3626168 1			100,000.00		99,463.28			23-Nov-2004		6.625%		IL - 55.56%		Paid Off - 360		06/01/2004
3627655 1			296,100.00		293,810.96			03-Dec-2004		6.250%		CA - 90.00%		Paid Off - 360		04/01/2004
3631659 1			150,000.00		149,108.09			02-Dec-2004		8.250%		FL - 46.58%		Paid Off - 360		05/01/2004
3636709 1			105,000.00		104,463.06			22-Nov-2004		6.875%		NJ - 47.51%		Paid Off - 360		06/01/2004
3649205 1			229,500.00		226,749.33			07-Dec-2004		3.875%		IL - 85.00%		Paid Off - 360		04/01/2004
3655454 1			78,600.00		78,387.64			01-Dec-2004		9.125%		NJ - 47.93%		Paid Off - 360		07/01/2004
3671429 1			182,000.00		181,440.88			03-Dec-2004		8.500%		DC - 65.00%		Paid Off - 360		07/01/2004
3672823 1			130,000.00		129,285.25			23-Nov-2004		6.500%		FL - 79.75%		Paid Off - 360		06/01/2004
3674591 1			207,200.00		206,004.91			02-Dec-2004		6.250%		CA - 79.72%		Paid Off - 360		06/01/2004
3684761 1			99,000.00		98,190.59			07-Dec-2004		6.250%		MD - 90.00%		Paid Off - 360		05/01/2004
3726216 1			183,000.00		182,472.68			29-Nov-2004		10.750%		NY - 58.10%		Paid Off - 360		06/01/2004
3772020 1			142,400.00		142,395.14			18-Nov-2004		6.750%		CA - 80.00%		Paid Off - 360		06/01/2004
3804354 1			56,000.00		55,671.45			19-Nov-2004		8.375%		WA - 54.90%		Paid Off - 360		07/01/2004
3779891 1			191,920.00		190,865.45			24-Nov-2004		8.000%		CA - 80.00%		Repur/Subs - 360		04/01/2004
3886051 1		FCL	233,750.00		232,067.88			10-Dec-2004		6.625%		MA - 85.00%		Repur/Subs - 360		04/01/2004


TOTAL			11,962,970.00		11,893,276.12
TOTAL


Page 19 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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 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 20 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution


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 21 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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 22 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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 23 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 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
a) Does a Delinquency Trigger Event Exists (0=No,1=Yes)														0
b) Does a Loss Trigger Event Exists (0=No,1=Yes)														0
60+ days Delinqueny Bal.-3M Rolling Avg.														9,611,013.52
Ending Collateral Balance														392,136,771.59
Delinquency Percentage														2.4500%
Beginning Balance of Mezzanine and C Class														92,250,287.73
Beginning Collateral Balance														404,363,634.53
Credit Enhancement Percentage														22.8100%
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 - Due														0.00

Cap Contract Payments - Paid														0.00




Page 24 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Additional Certificate Report

ADDITIONAL CERTIFICATE REPORT

													NET WAC Shortfall CarryOver		NET WAC Shortfall Paid
CLASS

			A-1										$0.00		$0.00
													$0.00		$0.00
			A-2										$0.00		$0.00
													$0.00		$0.00
			A-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




Page 25 of 26
IndyMac SPMD 2004-A

Collateralized Asset-Backed Bonds
Collateralized Asset-Backed Bonds
2004-A

December 27, 2004 Distribution
Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
										Group 2		Group 1		Total
Sched. Payments for 60+Day Delinquent Loans										23,955.37		70,954.29		94,909.66
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior										21,655.24		51,725.45		73,380.69
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior										6,569.71		39,653.38		46,223.09
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior										1,266.74		18,388.97		19,655.71
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior										0.00		1,471.89		1,471.89
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										666,675.84		2,068,491.73		2,735,167.57
Current Scheduled Payments 1 Month Prior										675,125.37		2,125,669.06		2,800,794.42
Current Scheduled Payments 2 Month Prior										691,863.74		2,175,941.56		2,867,805.30
Current Scheduled Payments 3 Month Prior										702,393.35		2,228,835.04		2,931,228.39
Current Scheduled Payments 4 Month Prior										714,943.15		2,267,171.64		2,982,114.78
Current Scheduled Payments 5 Month Prior										742,195.75		2,297,432.53		3,039,628.28
Current Scheduled Payments 6 Month Prior										0.00		0.00		0.00
Current Scheduled Payments 7 Month Prior										0.00		0.00		0.00
Current Scheduled Payments 8 Month Prior										0.00		0.00		0.00
Current Scheduled Payments 9 Month Prior										0.00		0.00		0.00
Current Scheduled Payments 10 Month Prior										0.00		0.00		0.00
Current Scheduled Payments 11 Month Prior										0.00		0.00		0.00




Page 26 of 26

IndyMac ABS Inc. Home Equity Mortgage Loan Asset-Backed Trust, Series SPMD 2004-A 8-K