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): ~~July~~August 25, 2005 (Date of earliest event reported) IndyMac MBS Inc (as Depositor under the Pooling and Servicing Agreement, dated as August 1, 2003, providing for the issuance of IndyMac MBS, Inc. Residential Asset- Securitization Trust Series 2003-A9 Mortgage Pass-Through Certificates Series 2003-I. (Exact name of registrant as specified in charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-102888-08 95-4791925 (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 ~~July~~August 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: ~~Jul~~Aug 2726, 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 ~~July~~August 25, 2005.

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

External Parties

Table of Contents

Page

Seller

1. Certificate Payment Report

IndyMac Bank

2. Collection Account Report

3. Credit Enhancement Report

4. Collateral Report

Certificate Insurer(s)

5. Delinquency Report

6. REO Report

7. Foreclosure Report

8. Prepayment Report

9. Prepayment Detail Report

10. Realized Loss Report

11. Realized Loss Detail Report

Servicer(s)

12. Triggers and Adj. Cert. Report

IndyMac Bank

13. Other Related Information

Underwriter(s)

Greenwich Capital Markets

Total Number of Pages

Dates

Contacts

Cut-Off Date:

July 01, 2003

Brent Hoyler

Close Date:

July 28, 2003

Administrator

First Distribution Date:

August 25, 2003

(714) 247-6322

Brent.Hoyler@db.com

Address:

1761 East St. Andrew Place, Santa Ana, CA 92705

Distribution Date:

~~July~~August 25, 2005

Factor Information:

(800) 735-7777

Record Date:

~~June~~July 3029, 2005

Main Phone Number:

(714) 247-6000

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

Page 1 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Certificate Payment Report

Current Period Distribution - Senior Certificates

Prior

Current

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

AD,AS

35,000,000.00

2019,~~149~~588,~~070~~465.4036

6765,~~163~~294.5789

~~560~~763,~~605~~603.0473

~~627~~828,~~768~~898.6162

0.00

1918,~~588~~824,~~465~~861.3663

A-2

Z,AS

3,175,425.00

3,~~428~~439,~~012~~439.5223

0.00

11,~~426~~464.7180

3,~~439~~450,~~439~~904.2303

A-3

FLT,AS

108,612,255.00

6361,~~486~~784,~~717~~417.7417

~~204~~206,~~447~~462.3493

12,~~702~~321,~~300~~174.5733

12,~~906~~527,~~747~~637.9126

0.00

6159,~~784~~463,~~417~~242.1784

A-4

IO,INV,NTL

0.00

~~218~~205,~~797~~433.4519

0.00

~~218~~205,~~797~~433.4519

0.00

A-5

AD,TAC,AS

80,000,000.00

5049,~~605~~197,~~608~~614.1775

~~168~~163,~~685~~992.3705

1,~~407~~917,~~993~~836.4291

12,~~576~~081,~~678~~828.7996

0.00

4947,~~197~~279,~~614~~777.7584

A-6

Z,SUP,AD

12,845,000.00

0.00

A-7

AD,TAC,AS

50,000,000.00

3130,~~628~~748,~~505~~509.1427

9289,~~249~~683.8116

~~879~~1,~~995~~198,648.8705

~~972~~1,~~245~~288,331.6821

0.00

3029,~~748~~549,~~509~~861.2722

A-8

IO,NTL

0.00

1312,~~178~~811.5588

0.00

1312,~~178~~811.5588

0.00

PO,RSTP

112,246.00

8280,~~425~~786.9543

0.00

12,~~639~~198.5217

0.00

8078,~~786~~588.4326

A-X

IO,CSTR,NTL

0.00

2826,~~975~~116.4079

0.00

2826,~~975~~116.4079

0.00

R,AS

100.00

0.00

B-1

SUB,NAS

7,585,000.00

7,~~062~~054,~~349~~130.3738

32,~~369~~331.1144

8,~~218~~161.9953

40,~~588~~492.1097

0.00

7,~~054~~045,~~130~~968.3885

B-2

SUB,NAS

2,275,500.00

2,~~118~~116,~~704~~239.8111

9,~~710~~699.7443

2,~~465~~448.7046

12,~~176~~147.4489

0.00

2,~~116~~113,~~239~~790.1165

B-3

SUB,NAS

1,517,000.00

1,~~412~~410,~~469~~826.8707

6,~~473~~466.8329

1,~~643~~632.8031

8,~~117~~098.6360

0.00

1,~~410~~409,~~826~~193.0776

B-4

SUB,NAS

758,500.00

~~706~~705,~~234~~413.9202

3,~~236~~233.9215

~~821~~816.9016

4,~~058~~049.8231

0.00

~~705~~704,~~413~~596.0286

B-5

SUB,NAS

303,400.00

282,~~493~~165.9620

1,~~294~~293.7726

~~328~~326.7647

1,~~623~~619.5373

0.00

~~282~~281,~~165~~838.2073

B-6

SUB,NAS

1,213,601.00

~~940~~939,~~640~~546.9831

4,~~311~~306.2826

1,~~094~~087.6700

5,~~405~~393.9526

0242.00

0.00

~~939~~938,~~546~~217.31

SUB

100.00

2322,~~485~~879.1938

0.00

2322,~~485~~879.1938

0.00

100.00

Total

303,398,127.00

~~181~~177,~~903~~347,~~333~~652.8330

~~874~~850,~~379~~004.3310

46,~~567~~217,~~108~~933.2412

57,~~441~~067,~~487~~937.5722

0242.00

11,~~426~~464.7180

~~177~~171,~~347~~140,~~652~~941.3098

Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face-

Orig. Principal

Prior

Current

Period

(with Notional)

Principal

Total

Principal

Class

Starting

Ending

Method

Cusip

Balance

Interest

Principal

Distribution

Balance

(1)

(2)

(3)

(4)=(2)+(3)

(5)

A-1

0607/01/05

0607/30/05

F-30/360

45660NSW6

35,000,000.00

~~575~~559.~~687726~~670439

1.~~918959~~865568

1621.~~017287~~817249

1723.~~936246~~682818

~~559~~537.~~670439~~853189

A-2

0607/01/05

0607/30/05

F-30/360

45660NSX4

3,175,425.00

1,~~079~~083.~~544477~~142959

0.000000

1,~~083~~086.~~142959~~753436

A-3

0607/25/05

0708/24/05

A-30/360

45660NSY2

108,612,255.00

~~584~~568.~~526283~~853093

1.~~882360~~900917

1521.~~673191~~371201

1723.~~555550~~272118

~~568~~547.~~853093~~481892

A-4

0607/25/05

0708/24/05

A-30/360

45660NSZ9

108,612,255.00

~~584~~568.~~526283~~853093

21.~~014482~~891437

0.000000

21.~~014482~~891437

~~568~~547.~~853093~~481892

A-5

0607/01/05

0607/30/05

F-30/360

45660NTA3

80,000,000.00

~~632~~614.~~570102~~970184

2.~~108567~~049901

1723.~~599918~~972961

1926.~~708485~~022862

~~614~~590.~~970184~~997223

A-6

0607/01/05

0607/30/05

F-30/360

45660NTB1

12,845,000.00

0.000000

A-7

0607/01/05

0607/30/05

F-30/360

45660NTC9

50,000,000.00

~~632~~614.~~570103~~970185

1.~~844996~~793663

1723.~~599917~~972961

1925.~~444914~~766624

~~614~~590.~~970185~~997224

A-8

0607/01/05

0607/30/05

F-30/360

45660NTD7

50,000,000.00

~~632~~614.~~570103~~970185

0.~~263571~~256238

0.000000

0.~~263571~~256238

~~614~~590.~~970185~~997224

0607/01/05

0607/30/05

F-30/360

45660NTE5

112,246.00

~~734~~719.~~333072~~726583

0.000000

1419.~~606489~~583504

~~719~~700.~~726583~~143079

A-X

0607/01/05

0607/30/05

A-30/360

45660NTF2

221,083,608.00

~~549~~534.~~373741~~205842

0.~~131061~~118131

0.000000

0.~~131061~~118131

~~534~~513.~~205842~~423115

0607/01/05

0607/30/05

45660NTG0

100.00

0.000000

B-1

0607/01/05

0607/30/05

F-30/360

45660NTH8

7,585,000.00

~~931~~930.~~094182~~010597

4.~~267516~~262550

1.~~083585~~076009

5.~~351101~~338559

~~930~~928.~~010597~~934588

B-2

0607/01/05

0607/30/05

F-30/360

45660NTJ4

2,275,500.00

~~931~~930.~~094181~~010595

4.~~267519~~262549

1.~~083586~~076010

5.~~351105~~338559

~~930~~928.~~010595~~934586

B-3

0607/01/05

0607/30/05

F-30/360

45660NTK1

1,517,000.00

~~931~~930.~~094179~~010593

4.~~267521~~262551

1.~~083586~~076012

5.~~351107~~338563

~~930~~928.~~010593~~934581

B-4

0607/01/05

0607/30/05

F-30/360

758,500.00

~~931~~930.~~094160~~010574

4.~~267528~~262558

1.~~083586~~076018

5.~~351114~~338576

~~930~~928.~~010574~~934555

B-5

0607/01/05

0607/30/05

F-30/360

303,400.00

~~931~~930.~~094133~~010547

4.~~267535~~262558

1.~~083586~~076038

5.~~351121~~338596

~~930~~928.~~010547~~934509

B-6

0607/01/05

0607/30/05

F-30/360

1,213,601.00

~~775~~774.~~082568~~180567

3.~~552469~~548333

0.~~902002~~895682

4.~~454471~~444014

~~774~~773.~~180567~~085479

0607/01/05

0607/30/05

100.00

1,000.000000

~~234~~228,~~851~~793.~~900000~~800000

0.000000

~~234~~228,~~851~~793.~~900000~~800000

1,000.000000

Page 2 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Distribution to Date - Senior Certificates

Current

Original

Unscheduled

Scheduled

Total

Realized

Deferred

Principal

Class

Face Value

Interest

Principal

Distribution

Loss

Interest

Balance

(1)

(2)

(3)

(4)

(5)=(3)+(4)

(6)=(2)+(5)

(7)

(8)

(9)=(1)-(5)-(7)+(8)

A-1

35,000,000.00

2,~~248~~313,~~383~~678.3625

1314,~~349~~089,~~118~~206.8032

2,~~062~~085,~~415~~932.8405

1516,~~411~~175,~~534~~138.6437

1718,~~659~~488,~~918~~816.0062

0.00

1918,~~588~~824,~~465~~861.3663

A-2

3,175,425.00

0.00

~~264~~275,~~014~~479.2303

3,~~439~~450,~~439~~904.2303

A-3

108,612,255.00

34,~~834~~040,~~301~~763.0598

4042,~~561~~811,~~877~~567.0165

6,~~265~~337,~~960~~444.8251

4649,~~827~~149,~~837~~012.8316

5053,~~662~~189,~~138~~776.8814

0.00

6159,~~784~~463,~~417~~242.1784

A-4

0.00

10,~~192~~397,~~130~~563.0322

0.00

10,~~192~~397,~~130~~563.0322

0.00

A-5

80,000,000.00

5,~~345~~509,~~773~~765.5257

2628,~~629~~488,~~263~~038.7227

4,~~173~~232,~~121~~183.5288

3032,~~802~~720,~~385~~222.2415

3638,~~148~~229,~~158~~987.7672

0.00

4947,~~197~~279,~~614~~777.7584

A-6

12,845,000.00

0.00

11,630,448.77

1,703,964.24

13,334,413.01

0.00

489,413.01

0.00

A-7

50,000,000.00

23,~~923~~013,~~469~~153.9107

1617,~~643~~805,~~289~~023.7986

2,~~608~~645,~~200~~114.9492

1920,~~251~~450,~~490~~138.7479

2223,~~174~~463,~~960~~291.6586

0.00

3029,~~748~~549,~~509~~861.2722

A-8

0.00

~~417~~430,~~638~~450.5947

0.00

~~417~~430,~~638~~450.5947

0.00

112,246.00

0.00

2830,~~163~~265.9912

3,~~295~~392.5761

3133,~~459~~657.5673

0.00

8078,~~786~~588.4326

A-X

0.00

1,~~236~~262,~~392~~509.2605

0.00

1,~~236~~262,~~392~~509.2605

0.00

100.00

0.31

34.70

65.30

100.00

100.31

0.00

B-1

7,585,000.00

~~807~~839,~~483~~814.2468

0.04

~~530~~539,~~869~~031.5912

~~530~~539,~~869~~031.6316

1,~~338~~378,~~352~~845.8784

0.00

7,~~054~~045,~~130~~968.3885

B-2

2,275,500.00

~~242~~251,~~245~~944.0245

0.02

~~159~~161,~~260~~709.8834

~~159~~161,~~260~~709.9036

~~401~~413,~~505~~653.9281

0.00

2,~~116~~113,~~239~~790.1165

B-3

1,517,000.00

~~161~~167,~~496~~962.6796

0.00

~~106~~107,~~173~~806.9324

~~267~~275,~~670~~769.6020

0.00

1,~~410~~409,~~826~~193.0776

B-4

758,500.00

8083,~~748~~981.3449

0.00

53,~~086~~903.9814

~~133~~137,~~835~~884.3263

0.00

~~705~~704,~~413~~596.0286

B-5

303,400.00

3233,~~299~~592.3460

0.00

21,~~234~~561.8027

5355,~~534~~153.1487

0.00

~~282~~281,~~165~~838.2073

B-6

1,213,601.00

~~126~~130,~~593~~900.7703

0.00

8485,~~281~~368.9693

8485,~~281~~368.98

~~210~~216,~~875~~269.7501

~~189~~190,~~772~~014.6465

0.00

~~939~~938,~~546~~217.31

100.00

~~197~~220,~~380~~259.1351

0.00

~~197~~220,~~380~~259.1351

0.00

100.00

Total

303,398,127.00

2728,~~846~~696,~~335~~339.5464

~~108~~114,~~842~~854,~~196~~584.8475

17,~~771~~977,~~932~~477.3755

~~126~~132,~~614~~832,~~129~~062.2436

~~154~~161,~~460~~528,~~464~~402.7800

~~189~~190,~~772~~014.6465

~~753~~764,~~427~~892.2404

~~177~~171,~~347~~140,~~652~~941.3098

Interest Detail - Senior Certificates

Pass

Prior Principal

Non-

Prior

Unscheduled

Paid or

Current

Through

(with Notional)

Accrued

Supported

Unpaid

Interest

Optimal

Deferred

Unpaid

Class

Rate

Balance

Interest

Interest SF

Interest

Adjustment

Interest

(1)

(2)

(3)

(4)

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

(6)

(7)=(5)-(6)

A-1

4.00000%

2019,~~149~~588,~~070~~465.4036

6765,~~163~~294.5788

0.00

6765,~~163~~294.5788

6765,~~163~~294.5789

0.00

A-2

4.00000%

3,~~428~~439,~~012~~439.5223

11,~~426~~464.7180

0.00

11,~~426~~464.7180

0.00

A-3

34.~~86438~~01000%

6361,~~486~~784,~~717~~417.7417

~~204~~206,~~447~~462.3493

0.00

~~204~~206,~~447~~462.3493

0.00

A-4

43.~~13562~~99000%

6361,~~486~~784,~~717~~417.7417

~~218~~205,~~797~~433.4519

0.00

~~218~~205,~~797~~433.4519

0.00

A-5

4.00000%

5049,~~605~~197,~~608~~614.1775

~~168~~163,~~685~~992.3605

0.00

~~168~~163,~~685~~992.3605

~~168~~163,~~685~~992.3705

0.00

A-6

0.00000%

0.00

A-7

3.50000%

3130,~~628~~748,~~505~~509.1427

9289,~~249~~683.8115

0.00

9289,~~249~~683.8115

9289,~~249~~683.8116

0.00

A-8

0.50000%

3130,~~628~~748,~~505~~509.1427

1312,~~178~~811.5488

0.00

1312,~~178~~811.5488

1312,~~178~~811.5588

0.00

0.00000%

8280,~~425~~786.9543

0.00

A-X

0.~~28628~~26536%

~~121~~118,~~457~~104,~~528~~154.7796

2826,~~975~~116.4078

0.00

2826,~~975~~116.4078

2826,~~975~~116.4079

0.00

0.00000%

0.00

B-1

5.50000%

7,~~062~~054,~~349~~130.3738

32,~~369~~331.1043

0.00

32,~~369~~331.1043

32,~~369~~331.1144

0.00

B-2

5.50000%

2,~~118~~116,~~704~~239.8111

9,~~710~~699.7343

0.00

9,~~710~~699.7343

9,~~710~~699.7443

0.00

B-3

5.50000%

1,~~412~~410,~~469~~826.8707

6,~~473~~466.8229

0.00

6,~~473~~466.8229

6,~~473~~466.8329

0.00

B-4

5.50000%

~~706~~705,~~234~~413.9202

3,~~236~~233.9114

0.00

3,~~236~~233.9114

3,~~236~~233.9215

0.00

B-5

5.50000%

282,~~493~~165.9620

1,~~294~~293.7626

0.00

1,~~294~~293.7626

1,~~294~~293.7726

0.00

B-6

5.50000%

~~940~~939,~~640~~546.9831

4,~~311~~306.2725

0.00

4,~~311~~306.2725

4,~~311~~306.2826

0.00

~~281~~274,~~822~~552.~~28000~~56000%

100.00

0.00

2322,~~485~~879.1938

0.00

Total

~~398~~387,~~476~~984,~~085~~733.4870

~~862~~838,~~320~~589.7746

0.00

~~862~~838,~~320~~589.7746

~~885~~861,~~806~~468.0490

0.00

Page 3 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Collection Account Report

SUMMARY

Total

Principal Collections

46,~~555~~206,~~681~~468.5332

Principal Withrawals

0.00

Principal Other Accounts

0.00

TOTAL NET PRINCIPAL

46,~~555~~206,~~681~~468.5332

Interest Collections

~~871~~849,~~627~~111.0556

Interest Withdrawals

-0.00

Interest Other Accounts

2322,~~485~~879.1938

Interest Fees

-910,~~306~~522.2010

TOTAL NET INTEREST

~~885~~861,~~806~~468.0484

TOTAL AVAILABLE FUNDS FOR DISTRIBUTION

57,~~441~~067,~~487~~937.5716

PRINCIPAL - COLLECTIONS

Total

Scheduled Principal Received

~~211~~205,~~697~~192.7116

Curtailments

2322,~~138~~134.7734

Prepayments In Full

45,~~320~~979,~~845~~383.0582

Repurchased/Substitutions

0.00

Liquidations

0.00

Insurance Principal

0.00

Other Additional Principal

0.00

Delinquent Principal

-~~178~~175,~~041~~163.0195

Realized Losses

-0242.00

Advanced Principal

~~178~~175,~~041~~163.0195

TOTAL PRINCIPAL COLLECTED

46,~~555~~206,~~681~~468.5332

PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK

PRINCIPAL - OTHER ACCOUNTS

Total

TOTAL PRINCIPAL OTHER ACCOUNTS

0.00

Page 4 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

INTEREST - COLLECTIONS

Total

Scheduled Interest

~~908~~885,~~439~~134.2972

Repurchased/Substitution Interest

0.00

Liquidation Interest

0.00

Insurance Interest

0.00

Other Additional Interest

0.00

Prepayment Interest Shortfalls

-32,~~068~~628.9035

Delinquent Interest

-~~743~~727,~~666~~585.1289

Compensating Interest

32,~~068~~628.9035

Civil Relief Act Shortfalls

-0.00

Interest Advanced

~~706~~691,~~853~~562.8874

TOTAL INTEREST COLLECTED

~~871~~849,~~627~~111.0556

INTEREST - WITHDRAWALS

Total

TOTAL INTEREST WITHDRAWALS

0.00

INTEREST - OTHER ACCOUNTS

Total

Prepayment Charges

2322,~~485~~879.1938

TOTAL INTEREST OTHER ACCOUNTS

2322,~~485~~879.1938

INTEREST - FEES

Total

Current Servicing Fees

87,~~169~~813.2966

Trustee Fees

1,~~136~~108.9044

REMIC Tax Filing Fees

01,600.00

TOTAL INTEREST FEES

910,~~306~~522.2010

Page 5 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Credit Enhancement Report

ACCOUNTS

SPACE INTENTIONALLY LEFT BLANK

INSURANCE

SPACE INTENTIONALLY LEFT BLANK

STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK

Page 6 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Collateral Report

COLLATERAL

Total

Loan Count:

Original

810

Prior

~~494~~482

Prefunding

Scheduled Paid Offs

-0

Full Voluntary Prepayments

-1218

Repurchases

-0

Liquidations

-0

Current

~~482~~464

Principal Balance:

Original

303,250,183.98

Prior

~~181~~177,~~903~~347,~~233~~552.8330

Prefunding

0.00

Scheduled Principal

-~~211~~205,~~697~~192.7116

Partial Prepayments

-2322,~~138~~134.7734

Full Voluntary Prepayments

-45,~~320~~979,~~845~~383.0582

Repurchases

-0.00

Liquidations

-0.00

Current

~~177~~171,~~347~~140,~~552~~841.3098

PREFUNDING

SPACE INTENTIONALLY LEFT BLANK

Page 7 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

CHARACTERISTICS

Total

Weighted Average Coupon Original

6.10169%

Weighted Average Coupon Prior

5.~~99660~~99290%

Weighted Average Coupon Current

5.~~99290~~98915%

Weighted Average Months to Maturity Original

358

Weighted Average Months to Maturity Prior

~~333~~332

Weighted Average Months to Maturity Current

~~332~~331

Weighted Avg Remaining Amortization Term Original

358

Weighted Avg Remaining Amortization Term Prior

~~333~~332

Weighted Avg Remaining Amortization Term Current

~~332~~331

Weighted Average Seasoning Original

1.15

Weighted Average Seasoning Prior

2324.1110

Weighted Average Seasoning Current

2425.1011

Page 8 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

ARM CHARACTERISTICS

Total

Weighted Average Margin Original

0.00000%

Weighted Average Margin Prior

0.00000%

Weighted Average Margin Current

0.00000%

Weighted Average Max Rate Original

0.00000%

Weighted Average Max Rate Prior

0.00000%

Weighted Average Max Rate Current

0.00000%

Weighted Average Min Rate Original

0.00000%

Weighted Average Min Rate Prior

0.00000%

Weighted Average Min Rate Current

0.00000%

Weighted Average Cap Up Original

0.00000%

Weighted Average Cap Up Prior

0.00000%

Weighted Average Cap Up Current

0.00000%

Weighted Average Cap Down Original

0.00000%

Weighted Average Cap Down Prior

0.00000%

Weighted Average Cap Down Current

0.00000%

SERVICING FEES & ADVANCES

Total

Current Servicing Fees

87,~~169~~813.2966

Delinquent Servicing Fees

36,~~812~~023.2416

TOTAL SERVICING FEES

4443,~~981~~836.5381

Total Servicing Fees

4443,~~981~~836.5381

Compensating Interest

-32,~~068~~628.9035

Delinquent Servicing Fees

-36,~~812~~023.2416

COLLECTED SERVICING FEES

5,~~100~~185.3830

Total Advaced Interest

~~706~~691,~~853~~562.8874

Total Advaced Principal

~~178~~175,~~041~~163.0195

Aggregate Advances with respect to this Distribution

~~884~~866,~~894~~726.8968

ADDITIONAL COLLATERAL INFORMATION

Total

Prepayment Interest Shortfall (PPIS)

32,~~068~~628.9035

Compensating Interest

-32,~~068~~628.9035

Net Prepayment Interest Shortfall (PPIS)

0.00

Weighted Average Net Mortgage Rate

5.~~688657~~674211%

Page 9 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Delinquency Report

TOTAL

< 1 PAYMENT

1 PAYMENT

2 PAYMENTS

3+ PAYMENTS

TOTAL

DELINQUENT

Balance

2,~~894~~621,~~754~~663.5300

~~181~~808,~~637~~810.1002

~~895~~1,~~760~~076,264.0731

34,~~972~~506,~~151~~737.7033

% Balance

1.6353%

0.1047%

0.5163%

2.2463%

# Loans

1012

% # Loans

1.4551%

0.2143%

0.4165%

2.0759%

FORECLOSURE

Balance

0.00

% Balance

0.00%

# Loans

% # Loans

0.00%

BANKRUPTCY

Balance

0.00

~~459,560~~0.3000

0459,010.0081

0.00

459,~~560~~010.3081

% Balance

0.00%

0.2600%

0.0027%

0.00%

0.2627%

# Loans

% # Loans

0.00%

0.2100%

0.0022%

0.00%

0.2122%

REO

Balance

0.00

% Balance

0.00%

# Loans

% # Loans

0.00%

TOTAL

Balance

0.00

32,~~354~~621,~~314~~663.8300

~~181~~1,~~637~~267,820.1083

~~895~~1,~~760~~076,264.0731

4,~~431~~965,~~712~~748.0014

% Balance

0.00%

1.8953%

0.1074%

0.5163%

2.5090%

# Loans

1113

% # Loans

0.00%

1.6651%

0.2165%

0.4165%

2.2880%

Page 10 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

REO Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

TOTAL

Page 11 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Foreclosure Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

TOTAL

Page 12 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Prepayment Report

VOLUNTARY PREPAYMENTS

Total

Current

Number of Paid in Full Loans

1218

Number of Repurchased Loans

Total Number of Loans Prepaid in Full

1218

Curtailments Amount

2322,~~138~~134.7734

Paid in Full Balance

45,~~320~~979,~~845~~383.0582

Repurchased Loans Balance

0.00

Total Prepayment Amount

46,~~343~~001,~~983~~518.8216

Cumulative

Number of Paid in Full Loans

~~288~~306

Number of Repurchased Loans

Total Number of Loans Prepaid in Full

~~327~~345

Paid in Full Balance

~~106~~112,~~864~~844,~~699~~082.0789

Repurchased Loans Balance

11,419,822.54

Curtailments Amount

1,~~045~~067,~~830~~965.8519

Total Prepayment Amount

~~119~~125,~~330~~331,~~352~~870.4662

Page 13 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

VOLUNTARY PREPAYMENTS RATES

Total

SMM

23.39%

3 Months Avg SMM

2.3461%

12 Months Avg SMM

2.4657%

Avg SMM Since Cut-off

2.1116%

CPR

2533.2087%

3 Months Avg CPR

2427.7523%

12 Months Avg CPR

2526.8182%

Avg CPR Since Cut-off

2223.5403%

PSA

~~522~~674.7859%

3 Months Avg PSA Approximation

~~535~~564.4383%

12 Months Avg PSA Approximation

~~693~~683.4492%

Avg PSA Since Cut-off Approximation

~~893~~877.2888%

Page 14 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 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/(0.002*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) 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 15 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 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

Principal

Prepayment

Note

LTV at

Payment

Loan Group

Status

Balance

Amount

Date

Rate

Origination

Original Term

Date

2313123 1

174,600.00

170,500.05

01-Jul-2005

6.875%

NV - 90.00%

Paid Off - 360

01-May-2003

2274671 1

191,500.00

187,133.10

15-Aug-2005

7.250%

AZ - 89.91%

Paid Off - 360

01-May-2003

2356886 1

179,800.00

175,348.86

29-Jun-2005

5.875%

CA - 66.35%

Paid Off - 360

01-Aug-2003

2297485 1

411,600.00

400,940.59

27-Jul-2005

5.875%

CA - 69.76%

Paid Off - 360

01-Aug-2003

2459176 1

89,100.00

87,449.29

21-Jun-2005

8.125%

FL - 90.00%

Paid Off - 360

01-May-2003

2557686 1

462,000.00

451,570.24

29-Jul-2005

6.625%

CA - 80.00%

Paid Off - 360

01-Aug-2003

2500110 1

208,000.00

202,966.04

22-Jun-2005

6.000%

CA - 64.00%

Paid Off - 360

01-Aug-2003

2558257 1

91,800.00

89,790.37

20-Jul-2005

7.250%

FL - 90.00%

Paid Off - 360

01-Jun-2003

2539949 1

370,000.00

360,840.02

05-Jul-2005

5.875%

CA - 34.42%

Paid Off - 360

01-Aug-2003

2563302 1

486,000.00

473,126.93

12-Aug-2005

5.750%

CA - 41.36%

Paid Off - 360

01-Aug-2003

2571199 1

575,000.00

561,084.25

13-Jul-2005

6.000%

CA - 73.72%

Paid Off - 360

01-Aug-2003

2580504 1

375,000.00

365,924.69

02-Aug-2005

6.000%

CA - 73.82%

Paid Off - 360

01-Sep-2003

2612414 1

641,000.00

622,208.91

17-Jun-2005

5.750%

CA - 73.26%

Paid Off - 360

01-Aug-2003

2583034 1

146,500.00

141,523.31

27-Jul-2005

5.875%

NY - 82.77%

Paid Off - 360

01-Aug-2003

2624250 1

440,000.00

430,459.97

22-Jun-2005

6.625%

CA - 83.81%

Paid Off - 360

01-Aug-2003

2603269 1

390,000.00

371,634.99

26-Jul-2005

5.875%

CA - 56.52%

Paid Off - 360

01-Aug-2003

2635142 1

512,000.00

499,034.86

27-Jun-2005

5.750%

CA - 80.00%

Paid Off - 360

01-Aug-2003

2631626 1

140,000.00

136,455.54

20-Jul-2005

6.000%

CA - 59.83%

Paid Off - 360

01-Aug-2003

2711388 1

375,000.00

366,752.72

30-Jun-2005

7.000%

CA - 71.43%

Paid Off - 360

01-Jun-2003

2650180 1

440,000.00

428,858.07

28-Jul-2005

5.750%

CA - 58.28%

Paid Off - 360

01-Sep-2003

2721491 1

492,000.00

479,425.19

29-Jun-2005

6.125%

CA - 80.00%

Paid Off - 360

01-Jul-2003

2656789 1

356,000.00

347,186.70

20-Jul-2005

5.875%

CA - 78.24%

Paid Off - 360

01-Sep-2003

2750935 1

373,600.00

364,774.89

05-Jul-2005

5.875%

CA - 80.00%

Paid Off - 360

01-Sep-2003

2679788 1

460,000.00

449,206.03

09-Aug-2005

6.500%

NY - 80.00%

Paid Off - 360

01-Sep-2003

TOTAL

4,430,100.00

4,320,845.05

2740929 1

400,000.00

387,429.77

02-Aug-2005

6.125%

CA - 88.30%

Paid Off - 360

01-Jul-2003

2741679 1

385,000.00

374,587.87

20-Jul-2005

5.875%

CA - 79.38%

Paid Off - 360

01-Jul-2003

2741927 1

340,000.00

329,340.64

01-Aug-2005

5.875%

CA - 80.00%

Paid Off - 360

01-Jul-2003

2775590 1

380,000.00

256,610.30

15-Aug-2005

6.375%

NY - 80.00%

Paid Off - 360

01-Aug-2003

2799361 1

165,500.00

161,176.71

10-Aug-2005

6.000%

FL - 63.65%

Paid Off - 360

01-Aug-2003

4053078 1

650,000.00

626,887.97

11-Aug-2005

5.750%

CA - 64.36%

Paid Off - 360

01-Aug-2003

TOTAL

6,270,900.00

5,979,383.82

Page 16 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Realized Loss Report

COLLATERAL REALIZED LOSSES

Total

Current

Number of Loans Liquidated

Collateral Principal Realized Loss/(Gain) Amount

0242.00

Collateral Interest Realized Loss/(Gain) Amount

0.00

Net Liquidation Proceeds

0(242.00)

Cumulative

Number of Loans Liquidated

Collateral Realized Loss/(Gain) Amount

~~189~~190,~~772~~014.65

Net Liquidation Proceeds

134,~~830~~588.12

Special Hazard Loss Coverage Amt

4,066,039.36

Fraud Loss Coverage Amt

1,819,032.34

Bankrupt Loss Coverage Amt

100,000.00

Class B-1 Writedown Amount

0.00

Class B-2 Writedown Amount

0.00

Class B-3 Writedown Amount

0.00

Class B-4 Writedown Amount

0.00

Class B-5 Writedown Amount

0.00

Class B-6 Writedown Amount

0.00

Page 17 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

DEFAULT SPEEDS

Total

MDR

0.00%

3 Months Avg MDR

0.00%

12 Months Avg MDR

0.01%

Avg MDR Since Cut-off

0.01%

CDR

0.00%

3 Months Avg CDR

0.00%

12 Months Avg CDR

0.17%

Avg CDR Since Cut-off

0.08%

SDA

0.00%

3 Months Avg SDA Approximation

0.00%

12 Months Avg SDA Approximation

0.4542%

Avg SDA Since Cut-off Approximation

0.3330%

Loss Severity Approximation for Current Period

0.00%

3 Months Avg Loss Severity Approximation

0.00%

12 Months Avg Loss Severity Approximation

4.86%

Avg Loss Severity Approximation Since Cut-off

2.4333%

Page 18 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 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 19 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Realized Loss Detail Report

Loan Number

Current

State &

Prior

Realized

Cumulative

Loan

Note

LTV at

Original

Principal

Loss/(Gain)

Realized

Loan Group

Status

Rate

Origination

Term

Balance

Revision

Loss/(Gain)

TOTAL

2721075 1

GA - 95.00%

360

Revision

242.00

TOTAL

242.00

Page 20 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Triggers and Adj. Cert. Report

TRIGGER EVENTS

Total

Has Optional Termination Date Reached (0=No,1=Yes)

Has Sr. Prepay Stepdown Condition Occurred

Has Sr. Credit Supp. Depletion Date Occured

Has Special Haz. Cov. Term Date Occured

Has Fraud Loss Coverage Term Date Occured

Has BK Loss Cov. Term Date Occured (0=No,1=Yes)

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

ADDITIONAL INFORMATION

Total

Current Senior Percentage

9392.~~112508~~943787%

Next Senior Percentage

92.~~943787~~696456%

Current Subordinate Percentage

67.~~887492~~056213%

Next Subordinate Percentage

7.~~056213~~303544%

Senior Prepayment Percentage

100.000000%

Next Senior Prepayment Percentage

100.000000%

Subordinate Prepayment Percentage

0.000000%

Next Subordinate Prepayment Percentage

0.000000%

Current LIBOR Rate

3.~~314380~~460000%

Next LIBOR Rate

30.~~460000~~000000%

Page 21 of 22

IndyMac Residential Asset Securitization Trust 2003-A9

Mortgage Pass-Through Certificates

2003-A9

July 25, 2005 Distribution

August 25, 2005 Distribution

Other Related Information

ADDITIONAL INFORMATION

Total

Current Scheduled Payments

1,~~120~~090,~~137~~326.0088

Current Scheduled Payments 1 Month Prior

1,~~144~~120,~~569~~137.4600

Current Scheduled Payments 2 Month Prior

1,~~173~~144,~~268~~569.9246

Current Scheduled Payments 3 Month Prior

1,~~198~~173,~~060~~268.0692

Current Scheduled Payments 4 Month Prior

1,~~223~~198,~~823~~060.9106

Current Scheduled Payments 5 Month Prior

1,~~254~~223,~~105~~823.6191

Current Scheduled Payments 6 Month Prior

1,~~283~~254,~~038~~105.9261

Current Scheduled Payments 7 Month Prior

1,~~302~~283,~~824~~038.6092

Current Scheduled Payments 8 Month Prior

1,~~337~~302,~~034~~824.3560

Current Scheduled Payments 9 Month Prior

1,~~393~~337,~~745~~034.5435

Current Scheduled Payments 10 Month Prior

1,~~444~~393,~~570~~745.3554

Current Scheduled Payments 11 Month Prior

1,~~478~~444,~~004~~570.6635

Delinquent 60+ Scheduled Payments

915,~~761~~003.6875

Delinq. 60+ Sched. Pmnts, 1 Month Prior

149,~~171~~761.7868

Delinq. 60+ Sched. Pmnts, 2 Month Prior

1614,~~141~~171.4978

Delinq. 60+ Sched. Pmnts, 3 Month Prior

1116,~~970~~141.0749

Delinq. 60+ Sched. Pmnts, 4 Month Prior

1311,~~345~~970.9907

Delinq. 60+ Sched. Pmnts, 5 Month Prior

1513,~~963~~345.1899

Delinq. 60+ Sched. Pmnts, 6 Month Prior

615,~~526~~963.0718

Delinq. 60+ Sched. Pmnts, 7 Month Prior

96,~~143~~526.2807

Delinq. 60+ Sched. Pmnts, 8 Month Prior

69,~~095~~143.3928

Delinq. 60+ Sched. Pmnts, 9 Month Prior

26,~~171~~095.8139

Delinq. 60+ Sched. Pmnts, 10 Month Prior

72,~~159~~171.4881

Delinq. 60+ Sched. Pmnts, 11 Month Prior

57,~~951~~159.1548

Page 22 of 22

Filing Compare · INDYMAC MBS INC RESIDENTIAL ASSET SEC TRUST 2004 R1