Deutsche Bank National Trust				Distribution Date:	78/19/05
Santa Ana, CA 92705	GMAC	Mortgage	Corporation
Attn:

Page 1

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Certificateholder Monthly Distribution Summary

Certificate

Pass

Current

Cumulative

Class

Rate

Beginning

Through

Principal

Interest

Total

Realized

Ending

Realized

Class

Cusip

Description

Type

Balance

Rate (%)

Distribution

Losses

Balance

Losses

1-A

76112BUD0

Senior

Fix-30/360

18,~~893~~476,~~000~~536.0072

4.~~949906~~940879

~~416~~415,~~463~~562.2837

7776,~~932~~075.1530

~~494~~491,~~395~~637.4367

0.00

18,~~476~~060,~~536~~974.7235

0.00

2A-1

76112BUE8

Senior

Fix-30/360

5655,~~050~~228,~~000~~105.0073

5.~~377828~~377707

~~821~~561,~~894~~909.2745

~~251~~247,~~189~~500.3750

1809,~~073,083~~409.6495

0.00

5554,~~228~~666,~~105~~196.7328

0.00

2A-2

76112BUF5

Senior

Fix-30/360

2,~~739~~698,~~000~~836.0042

5.~~377828~~377707

4027,~~163~~458.5888

12,~~274~~094.8965

5239,~~438~~553.4753

0.00

2,~~698~~671,~~836~~377.4255

0.00

3A-1

76112BUG3

Senior

Fix-30/360

~~144~~141,~~100~~720,~~000~~163.0004

5.~~114523~~110321

2388,~~379,836~~681.9659

~~614~~603,~~169~~529.0162

2992,~~994,005~~211.9721

0.00

141,~~720~~331,~~163~~481.0445

0.00

3A-2

76112BUH1

Senior

Fix-30/360

76,~~061~~944,~~000~~386.0034

5.~~114523~~110321

~~116~~19,~~613~~045.6667

3029,~~094~~573.7139

~~146~~48,~~708~~619.3706

0.00

6,~~944~~925,~~386~~340.3467

0.00

4A-1

76112BUJ7

Senior

Fix-30/360

52,~~750~~709,~~000~~640.0046

5.~~163260~~163558

40927,~~359~~629.5421

226,~~968~~807.3376

~~267~~1,~~327~~154,436.8797

0.00

5251,~~709~~782,~~640~~011.4624

0.00

4A-2

76112BUK4

Senior

Fix-30/360

2,~~592~~590,~~000~~016.0084

5.~~163260~~163558

145,~~983~~581.1633

11,~~152~~144.6477

1356,~~135~~726.8010

0.00

2,~~590~~544,~~016~~435.8451

0.00

5A-1

76112BUL2

Senior

Fix-30/360

8078,~~000~~730,~~000~~106.0061

5.~~378328~~377058

1,~~269~~454,~~893~~614.3986

~~358~~352,~~555~~780.2033

1,~~628~~807,~~448~~395.5919

0.00

7877,~~730~~275,~~106~~491.6175

0.00

5A-2

76112BUM0

Senior

Fix-30/360

3,~~933~~870,~~000~~568.0087

5.~~378328~~377058

6271,~~431~~512.1350

17,~~627~~343.4758

8088,~~058~~856.6008

0.00

3,~~870~~799,~~568~~056.8736

0.00

76112BUN8

Senior

Fix-30/360

~~100~~0.00

4.~~949906~~940879

~~100~~0.00

0.5500

~~100~~0.5500

0.00

M-1

76112BUP3

Mezzanine

Fix-30/360

6,~~370~~369,~~000~~202.0065

5.~~215605~~213163

~~797~~812.3500

27,~~686~~669.1775

28,~~483~~481.5275

0.00

6,~~369~~368,~~202~~390.65

0.00

M-2

76112BUQ1

Mezzanine

Fix-30/360

4,~~440~~439,~~000~~444.0023

5.~~215605~~213163

~~555~~565.7798

19,~~297~~286.7429

19,~~853~~852.5127

0.00

4,~~439~~438,~~444~~878.2326

0.00

M-3

76112BUR9

Mezzanine

Fix-30/360

2,~~702~~701,~~000~~661.0078

5.~~215605~~213163

~~338~~344.2243

11,~~743~~736.8084

12,~~082~~081.0227

0.00

2,701,~~661~~317.7835

0.00

B-1

76112BUS7

Junior

Fix-30/360

2,~~124~~123,~~000~~734.0013

5.~~215605~~213163

~~265~~270.8775

9,~~231~~226.6214

9,~~497~~496.4989

0.00

2,123,~~734~~463.1338

0.00

B-2

76112BUT5

Junior

Fix-30/360

1,~~351~~350,~~000~~830.0089

5.~~215605~~213163

~~169~~172.1122

5,~~871~~868.9042

6,~~041~~040.0164

0.00

1,350,~~830~~658.8968

0.00

B-3

76112BUU2

Junior

Fix-30/360

965,~~513~~392.5771

5.~~215605~~213163

~~120~~123.8608

4,~~196~~193.4596

4,317.3104

0.00

965,~~392~~269.7164

0.00

Totals

~~386~~380,~~070~~918,~~613~~627.5742

53,~~151~~914,~~986~~284.1532

1,~~677~~654,~~992~~831.0030

65,~~829~~569,~~978~~115.1562

0.00

~~380~~377,~~918~~004,~~627~~343.4212

0.00

Deutsche Bank National Trust				Distribution Date:	78/19/05
Santa Ana, CA 92705	GMAC	Mortgage	Corporation
Attn:

Page 2

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Principal Distribution Detail

Original

Beginning

Scheduled

Unscheduled

Net

Current

Ending

Certificate

Principal

Accretion

Principal

Realized

Certificate

Class

Cusip

Balance

Distribution

Principal

Adjustments

Distribution

Losses

Balance

Factor

1-A

76112BUD0

18,893,000.00

18,~~893~~476,~~000~~536.0072

~~416~~415,~~463~~562.2837

0.00

~~416~~415,~~463~~562.2837

0.00

18,~~476~~060,~~536~~974.7235

0.~~97795674176~~95596116812

2A-1

76112BUE8

56,050,000.00

5655,~~050~~228,~~000~~105.0073

~~821~~561,~~894~~909.2745

0.00

~~821~~561,~~894~~909.2745

0.00

5554,~~228~~666,~~105~~196.7328

0.~~98533640902~~97531126274

2A-2

76112BUF5

2,739,000.00

2,~~739~~698,~~000~~836.0042

4027,~~163~~458.5888

0.00

4027,~~163~~458.5888

0.00

2,~~698~~671,~~836~~377.4255

0.~~98533640902~~97531126274

3A-1

76112BUG3

144,100,000.00

~~144~~141,~~100~~720,~~000~~163.0004

2388,~~379,836~~681.9659

0.00

2388,~~379,836~~681.9659

0.00

141,~~720~~331,~~163~~481.0445

0.~~98348482329~~98078751871

3A-2

76112BUH1

7,061,000.00

76,~~061~~944,~~000~~386.0034

~~116~~19,~~613~~045.6667

0.00

~~116~~19,~~613~~045.6667

0.00

6,~~944~~925,~~386~~340.3467

0.~~98348482329~~98078751871

4A-1

76112BUJ7

52,750,000.00

52,~~750~~709,~~000~~640.0046

40927,~~359~~629.5421

0.00

40927,~~359~~629.5421

0.00

5251,~~709~~782,~~640~~011.4624

0.~~99923489015~~98164950220

4A-2

76112BUK4

2,592,000.00

2,~~592~~590,~~000~~016.0084

145,~~983~~581.1633

0.00

145,~~983~~581.1633

0.00

2,~~590~~544,~~016~~435.8451

0.~~99923489015~~98164950220

5A-1

76112BUL2

80,000,000.00

8078,~~000~~730,~~000~~106.0061

1,~~269~~454,~~893~~614.3986

0.00

1,~~269~~454,~~893~~614.3986

0.00

7877,~~730~~275,~~106~~491.6175

0.~~98412633262~~96594364685

5A-2

76112BUM0

3,933,000.00

3,~~933~~870,~~000~~568.0087

6271,~~431~~512.1350

0.00

6271,~~431~~512.1350

0.00

3,~~870~~799,~~568~~056.8736

0.~~98412633262~~96594364685

76112BUN8

100.00

~~100~~0.00

0.00

~~100~~0.00

0.00

0.00000000000

M-1

76112BUP3

6,370,000.00

6,~~370~~369,~~000~~202.0065

~~797~~812.3500

0.00

~~797~~812.3500

0.00

6,~~369~~368,~~202~~390.65

0.~~99987482741~~99974735501

M-2

76112BUQ1

4,440,000.00

4,~~440~~439,~~000~~444.0023

~~555~~565.7798

0.00

~~555~~565.7798

0.00

4,~~439~~438,~~444~~878.2326

0.~~99987482741~~99974735501

M-3

76112BUR9

2,702,000.00

2,~~702~~701,~~000~~661.0078

~~338~~344.2243

0.00

~~338~~344.2243

0.00

2,701,~~661~~317.7835

0.~~99987482741~~99974735501

B-1

76112BUS7

2,124,000.00

2,~~124~~123,~~000~~734.0013

~~265~~270.8775

0.00

~~265~~270.8775

0.00

2,123,~~734~~463.1338

0.~~99987482741~~99974735501

B-2

76112BUT5

1,351,000.00

1,~~351~~350,~~000~~830.0089

~~169~~172.1122

0.00

~~169~~172.1122

0.00

1,350,~~830~~658.8968

0.~~99987482741~~99974735501

B-3

76112BUU2

965,513.57

965,~~513~~392.5771

~~120~~123.8608

0.00

~~120~~123.8608

0.00

965,~~392~~269.7164

0.~~99987482741~~99974735501

Totals

386,070,613.57

~~386~~380,~~070~~918,~~613~~627.5742

53,~~151~~914,~~986~~284.1532

0.00

53,~~151~~914,~~986~~284.1532

0.00

~~380~~377,~~918~~004,~~627~~343.4212

Deutsche Bank National Trust				Distribution Date:	7/19/05
Santa Ana, CA 92705	GMAC	Mortgage	Corporation
Attn:

Page 3

Deutsche Bank National Trust				Distribution Date:	8/19/05
Santa Ana, CA 92705	*GMAC*	*Mortgage*	*Corporation*
Attn:

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Interest Distribution Detail

Beginning

Pass

Accrued

Cumulative

Total

Net

Unscheduled

Certificate

Through

Optimal

Unpaid

Deferred

Interest

Prepayment

Interest

Class

Balance

Rate (%)

Interest

Due

Int Shortfall

Adjustment

Paid

1-A

18,~~893~~476,~~000~~536.0072

4.~~949906~~940879

7776,~~932~~075.1530

0.00

7776,~~932~~075.1530

0.00

7776,~~932~~075.1530

2A-1

5655,~~050~~228,~~000~~105.0073

5.~~377828~~377707

~~251~~247,~~189~~500.3750

0.00

~~251~~247,~~189~~500.3750

0.00

~~251~~247,~~189~~500.3750

2A-2

2,~~739~~698,~~000~~836.0042

5.~~377828~~377707

12,~~274~~094.8965

0.00

12,~~274~~094.8965

0.00

12,~~274~~094.8965

3A-1

~~144~~141,~~100~~720,~~000~~163.0004

5.~~114523~~110321

~~614~~603,~~169~~529.0162

0.00

~~614~~603,~~169~~529.0162

0.00

~~614~~603,~~169~~529.0162

3A-2

76,~~061~~944,~~000~~386.0034

5.~~114523~~110321

3029,~~094~~573.7139

0.00

3029,~~094~~573.7139

0.00

3029,~~094~~573.7139

4A-1

52,~~750~~709,~~000~~640.0046

5.~~163260~~163558

226,~~968~~807.3376

0.00

226,~~968~~807.3376

0.00

226,~~968~~807.3376

4A-2

2,~~592~~590,~~000~~016.0084

5.~~163260~~163558

11,~~152~~144.6477

0.00

11,~~152~~144.6477

0.00

11,~~152~~144.6477

5A-1

8078,~~000~~730,~~000~~106.0061

5.~~378328~~377058

~~358~~352,~~555~~780.2033

0.00

~~358~~352,~~555~~780.2033

0.00

~~358~~352,~~555~~780.2033

5A-2

3,~~933~~870,~~000~~568.0087

5.~~378328~~377058

17,~~627~~343.4758

0.00

17,~~627~~343.4758

0.00

17,~~627~~343.4758

~~100~~0.00

4.~~949906~~940879

0.5500

0.00

0.5500

0.00

0.5500

M-1

6,~~370~~369,~~000~~202.0065

5.~~215605~~213163

27,~~686~~669.1775

0.00

27,~~686~~669.1775

0.00

27,~~686~~669.1775

M-2

4,~~440~~439,~~000~~444.0023

5.~~215605~~213163

19,~~297~~286.7429

0.00

19,~~297~~286.7429

0.00

19,~~297~~286.7429

M-3

2,~~702~~701,~~000~~661.0078

5.~~215605~~213163

11,~~743~~736.8084

0.00

11,~~743~~736.8084

0.00

11,~~743~~736.8084

B-1

2,~~124~~123,~~000~~734.0013

5.~~215605~~213163

9,~~231~~226.6214

0.00

9,~~231~~226.6214

0.00

9,~~231~~226.6214

B-2

1,~~351~~350,~~000~~830.0089

5.~~215605~~213163

5,~~871~~868.9042

0.00

5,~~871~~868.9042

0.00

5,~~871~~868.9042

B-3

965,~~513~~392.5771

5.~~215605~~213163

4,~~196~~193.4596

0.00

4,~~196~~193.4596

0.00

4,~~196~~193.4596

Totals

~~386~~380,~~070~~918,~~613~~627.5742

1,~~677~~654,~~992~~831.0030

0.00

1,~~677~~654,~~992~~831.0030

0.00

1,~~677~~654,~~992~~831.0030

Deutsche Bank National Trust				Distribution Date:	7/19/05
Santa Ana, CA 92705	GMAC	Mortgage	Corporation
Attn:

Page 4

Deutsche Bank National Trust				Distribution Date:	8/19/05
Santa Ana, CA 92705	*GMAC*	*Mortgage*	*Corporation*
Attn:

GMACM MORTGAGE LOAN TRUST 2005-AR4 GMACM Mortgage Pass-Through Certificates, Series 2005-AR4

Current Payment Information

Factors per $1,000

Original

Beginning Cert.

Ending Cert.

Pass

Certificate

Notional

Principal

Interest

Notional

Through

Class

Cusip

Balance

Distribution

Balance

Rate (%)

1-A

76112BUD0

18,893,000.00

~~1,000~~977.~~000000000~~956741762

2221.~~043258238~~995573644

4.~~124921755~~026639496

~~977~~955.~~956741762~~961168118

4.~~949906~~940879

2A-1

76112BUE8

56,050,000.00

~~1,000~~985.~~000000000~~336409022

1410.~~663590978~~025146279

4.~~481523019~~415709188

~~985~~975.~~336409022~~311262743

5.~~377828~~377707

2A-2

76112BUF5

2,739,000.00

~~1,000~~985.~~000000000~~336409022

1410.~~663590978~~025146279

4.~~481523019~~415717415

~~985~~975.~~336409022~~311262743

5.~~377828~~377707

3A-1

76112BUG3

144,100,000.00

~~1,000~~983.~~000000000~~484823294

162.~~515176706~~697304581

4.~~262102767~~188269396

~~983~~980.~~484823294~~787518714

5.~~114523~~110321

3A-2

76112BUH1

7,061,000.00

~~1,000~~983.~~000000000~~484823294

162.~~515176706~~697304581

4.~~262102767~~188272199

~~983~~980.~~484823294~~787518714

5.~~114523~~110321

4A-1

76112BUJ7

52,750,000.00

~~1,000~~999.~~000000000~~234890147

017.~~765109853~~585387947

4.~~302717072~~299673175

~~999~~981.~~234890147~~649502200

5.~~163260~~163558

4A-2

76112BUK4

2,592,000.00

~~1,000~~999.~~000000000~~234890147

017.~~765109853~~585387947

4.~~302717072~~299679784

~~999~~981.~~234890147~~649502200

5.~~163260~~163558

5A-1

76112BUL2

80,000,000.00

~~1,000~~984.~~000000000~~126332623

1518.~~873667377~~182685775

4.~~481939967~~409754125

~~984~~965.~~126332623~~943646848

5.~~378328~~377058

5A-2

76112BUM0

3,933,000.00

~~1,000~~984.~~000000000~~126332623

1518.~~873667377~~182685775

4.~~481939967~~409758454

~~984~~965.~~126332623~~943646848

5.~~378328~~377058

76112BUN8

100.00

~~1,000~~0.000000000

50.~~500000000~~000000000

0.000000000

4.~~949906~~940879

M-1

76112BUP3

6,370,000.00

~~1,000~~999.~~000000000~~874827409

0.~~125172591~~127472396

4.~~346337733~~343759812

999.~~874827409~~747355013

5.~~215605~~213163

M-2

76112BUQ1

4,440,000.00

~~1,000~~999.~~000000000~~874827409

0.~~125172591~~127472396

4.~~346337733~~343759009

999.~~874827409~~747355013

5.~~215605~~213163

M-3

76112BUR9

2,702,000.00

~~1,000~~999.~~000000000~~874827409

0.~~125172591~~127472396

4.~~346337733~~343760178

999.~~874827409~~747355013

5.~~215605~~213163

B-1

76112BUS7

2,124,000.00

~~1,000~~999.~~000000000~~874827409

0.~~125172591~~127472396

4.~~346337733~~343757062

999.~~874827409~~747355013

5.~~215605~~213163

B-2

76112BUT5

1,351,000.00

~~1,000~~999.~~000000000~~874827409

0.~~125172591~~127472396

4.~~346337733~~343760178

999.~~874827409~~747355013

5.~~215605~~213163

B-3

76112BUU2

965,513.57

~~1,000~~999.~~000000000~~874827409

0.~~125172591~~127472396

4.~~346339741~~343760803

999.~~874827409~~747355013

5.~~215605~~213163

Totals

386,070,613.57

~~1,000~~986.~~000000000~~655326852

1310.~~344673148~~138778199

4.~~346334430~~286343591

~~986~~976.~~655326852~~516548706

Filing Compare · GMACM MORTGAGE LOAN TRUST 2005-AR4