Page 1 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Table of Contents

Distribution Report			2
Factor Report			3
Exchangeable Certificates Distribution Report			4
Exchangeable Certificates Factor Report			4
Delinquency by Group			6
Delinquency Trend Group			6
Bankruptcy Group Report			7
Foreclosure Group Report			7
REO Group Report			7
REO Property Scheduled Balance			8
Prepayment Liquidated Loan Report			8
Realized Loss Group Report			9
Investor Supplemental Report			11

IF THERE ARE ANY QUESTIONS OR PROBLEMS WITH THIS STATEMENT, PLEASE CONTACT THE ADMINISTRATOR LISTED BELOW:

Chris Scott Jackson

Bank of New York - Structured Finance

221 West Sixth Street, 1^st Floor

Austin, Texas 78701

Tel: (512) 479-2635 / Fax: (512) 236-6504

Email: chris.jackson@bankofny.com

Page 2 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

DISTRIBUTION IN DOLLARS
CLASS	ORIGINAL FACE VALUE	BEGINNING PRINCIPAL BALANCE	PRINCIPAL	INTEREST	TOTAL	REALIZED LOSSES	DEFERRED INTEREST	ENDING PRINCIPAL BALANCE
A1	155,000,000.00	132,444,410.23	3,494,991.29	653,392.42	4,148,383.71	0.00	0.00	128,949,418.94
A3	10,000,000.00	8,544,800.66	225,483.31	42,154.35	267,637.66	0.00	0.00	8,319,317.35
A4	10,000,000.00	8,544,800.66	225,483.31	42,154.35	267,637.66	0.00	0.00	8,319,317.35
A5	40,000,000.00	40,000,000.00	0.00	200,000.00	200,000.00	0.00	0.00	40,000,000.00
A6	10,000,000.00	10,000,000.00	0.00	50,000.00	50,000.00	0.00	0.00	10,000,000.00
A7	68,000,000.00	68,000,000.00	0.00	340,000.00	340,000.00	0.00	0.00	68,000,000.00
A8	30,000,000.00	30,000,000.00	0.00	150,000.00	150,000.00	0.00	0.00	30,000,000.00
A10REG	30,581,915.00	30,581,915.00	0.00	152,909.58	152,909.58	0.00	0.00	30,581,915.00
A13	55,048,766.00	55,048,766.00	0.00	275,243.83	275,243.83	0.00	0.00	55,048,766.00
AP	1,209,186.00	1,202,475.99	1,368.45	0.00	1,368.45	0.00	0.00	1,201,107.54
AR	100.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
AM	7,529,800.00	7,499,957.54	6,113.39	37,499.79	43,613.18	0.00	0.00	7,493,844.15
M1	6,884,500.00	6,857,215.03	5,589.47	34,286.08	39,875.55	0.00	0.00	6,851,625.56
B1	2,366,500.00	2,357,120.99	1,921.34	11,785.60	13,706.94	0.00	0.00	2,355,199.65
B2	1,506,000.00	1,500,031.35	1,222.71	7,500.16	8,722.87	0.00	0.00	1,498,808.64
B3	860,500.00	857,089.62	698.63	4,285.45	4,984.08	0.00	0.00	856,390.99
B4	430,300.00	428,594.61	349.36	2,142.97	2,492.33	0.00	0.00	428,245.25
B5	860,613.86	857,203.04	698.73	4,286.02	4,984.75	0.00	0.00	856,504.31
TOTALS	430,278,180.86	404,724,380.72	3,963,919.99	2,007,640.60	5,971,560.59	0.00	0.00	400,760,460.73
A2	175,000,000.00	149,534,011.55	0.00	9,968.93	9,968.93	0.00	0.00	145,588,053.65
AX	20,722,638.58	18,773,568.84	0.00	93,867.84	93,867.84	0.00	0.00	18,621,188.14

Page 3 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

FACTOR INFORMATION PER $1000 OF ORIGINAL FACE
CLASS	CUSIP	BEGINNING PRINCIPAL	PRINCIPAL	INTEREST	TOTAL	ENDING PRINCIPAL	CURRENT PASS-THRU RATE
A1	16163FAA3	854.48006600	22.54833090	4.21543497	26.76376587	831.93173510	5.920000%
A3	16163FAC9	854.48006600	22.54833100	4.21543500	26.76376600	831.93173500	5.920000%
A4	16163FAD7	854.48006600	22.54833100	4.21543500	26.76376600	831.93173500	5.920000%
A5	16163FAE5	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
A6	16163FAF2	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
A7	16163FAG0	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
A8	16163FAH8	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
A10REG	16163FAK1	1,000.00000000	0.00000000	5.00000016	5.00000016	1,000.00000000	6.000000%
A13	16163FAN5	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
AP	16163FAQ8	994.45080410	1.13171175	0.00000000	1.13171175	993.31909235	0.000000%
AR	16163FAR6	0.00000000	0.00000000	0.00000000	0.00000000	0.00000000	6.000000%
AM	16163FAS4	996.03675264	0.81189275	4.98018407	5.79207682	995.22485989	6.000000%
M1	16163FAT2	996.03675358	0.81189193	4.98018447	5.79207640	995.22486165	6.000000%
B1	16163FAU9	996.03675893	0.81189098	4.98018170	5.79207268	995.22486795	6.000000%
B2	16163FAV7	996.03675299	0.81189243	4.98018592	5.79207835	995.22486056	6.000000%
B3	16163FAW5	996.03674608	0.81188844	4.98018594	5.79207438	995.22485764	6.000000%
B4	16163FAX3	996.03674181	0.81189868	4.98017662	5.79207530	995.22484313	6.000000%
B5	16163FAY1	996.03675916	0.81189722	4.98018937	5.79208659	995.22486194	6.000000%
TOTALS		940.61097849	9.21245875	4.66591310	13.87837184	931.39851974
A2	16163FAB1	854.48006600	0.00000000	0.05696531	0.05696531	831.93173514	0.080000%
AX	16163FAP0	905.94490501	0.00000000	4.52972432	4.52972432	898.59156054	6.000000%

Page 4 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

DISTRIBUTION IN DOLLARS
CLASS	ORIGINAL FACE VALUE	BEGINNING PRINCIPAL BALANCE	PRINCIPAL	INTEREST	TOTAL	REALIZED LOSSES	DEFERRED INTEREST	ENDING PRINCIPAL BALANCE
A9	27,260,000.00	27,260,000.00	0.00	136,300.00	136,300.00	0.00	0.00	27,260,000.00
A10EXCHN	27,788,766.00	27,788,766.00	0.00	138,943.83	138,943.83	0.00	0.00	27,788,766.00
A11	50,752,413.00	50,752,413.00	0.00	253,762.07	253,762.07	0.00	0.00	50,752,413.00
A12	17,247,587.00	17,247,587.00	0.00	86,237.93	86,237.93	0.00	0.00	17,247,587.00

FACTOR INFORMATION PER $1000 OF ORIGINAL FACE

CLASS	CUSIP	BEGINNING PRINCIPAL	PRINCIPAL	INTEREST	TOTAL	ENDING PRINCIPAL	CURRENT PASS-THRU RATE
A9	16163FAJ54	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
A10EXCHN	16163FAK1	1,000.00000000	0.00000000	5.00000000	5.00000000	1,000.00000000	6.000000%
A11	16163FAL9	1,000.00000000	0.00000000	5.00000010	5.00000010	1,000.00000000	6.000000%
A12	16163FAM7	1,000.00000000	0.00000000	4.99999971	4.99999971	1,000.00000000	6.000000%

*Please Note: Above Certificates are Exchanged Certificates

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Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Total Scheduled Principal Amount	329,914.51
Class AP Scheduled Principal Amount	994.56
Non-PO Scheduled Principal Amount	328,919.95

Total Unscheduled Principal Amounts	3,634,005.47
Class AP Unscheduled Principal Amount	373.88
Non-PO Unscheduled Principal Amount	3,633,631.59

One Month CPR	10.266221	%

Total Repurchase Proceeds	0.00
Class AP Repurchase Proceeds	0.00
Total Net Liquidation Proceeds	0.00

Total Beginning Principal Balance of Mortgage Loans	404,724,381.39
Class AP Beginning Principal Balance	1,202,476.68

Total Ending Principal Balance of Mortgage Loans	400,760,461.41
Class AP Ending Principal Balance	1,201,108.23

Aggregate Amount of Servicer Advances	143,860.94
Aggregate Amount of Recovered Servicer Advances	231,373.40

Aggregate Number of Outstanding Mortgage Loans	664.00

Aggregate Weighted Average Coupon	6.516490	%
Aggregate Weighted Average Remaining Term	353

Total Gross Interest	2,197,818.64
Total Servicing Fees	86,341.17

Page 6 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Number and Aggregate Principal Amounts of Mortgage Loans in Delinquency

Delinquency by Group
Group 1
Category	Number	Principal Balance	Percentage
1 Month	13	8,026,795.32	2.00%
2 Month	1	608,715.20	0.15%
3 Month	1	452,000.00	0.11%
Total	15	9,087,510.52	2.27%

Page 7 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Number and Aggregate Principal Amounts of Mortgage Loans in Bankruptcy

Bankruptcy Group Report
Group Number	Number of Loans	Principal Balance	Percentage
1	0	0.00	0.00%
Total	0	0.00	0.00%

Number and Aggregate Principal Amounts of Mortgage Loans in Foreclosure

Foreclosure Group Report
Group Number	Number of Loans	Principal Balance	Percentage
1	3	1,599,208.56	0.40%
Total	3	1,599,208.56	0.40%

Number and Aggregate Principal Amounts of REO Loans

REO Group Report
Group Number	Number of Loans	Principal Balance	Percentage
1	0	0.00	0.00%
Total	0	0.00	0.00%

Page 8 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

REO Mortgage Loans

REO Property Scheduled Balance
Group Number	Loan Number	REO Date	Schedule Principal Balance
			0.00
Total			0.00

Liquidated Mortgage Loans

Prepayment Liquidated Loan Report
Group Number	Loan Number	Date	Penalties	Premiums	Prepayment Amount	Current Note Rate	Original Stated Term	Original LTV Ratio (%)	Loan Origination Date
			0.00	0.00	0.00	.0	0.00	0.00
Total			0.00	0.00	0.00

Page 9 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Realized Loss Group Report
Group Number	Current Loss	Cumulative Loss	Ending Balance	Balance of Liquidated Loans	Net Liquidation Proceeds
1	0.00	0.00	400,760,461.41	0.00	0.00
TOTAL	0.00	0.00	400,760,461.41	0.00	0.00

Current Period Aggregate Realized Losses	0.00
Cumulative Realized Losses	0.00

Fraud Loss Amount	12,908,345.00
Bankruptcy Loss Amount	145,892.00
Special Hazard Loss Amount	5,834,848.00

Class A Principal Balance	384,367,168.54
Class AP Principal Balance	1,202,475.99
Class A Non-PO Principal Balance	383,164,692.55
Class AM Principal Balance	7,499,957.54
Class M1 Principal Balance	6,857,215.03
Class B Principal Balance	6,000,039.61

Class A Percentage	94.970105	%
Class AP Percentage	0.297110	%
Non-PO Class A Percentage	94.955116	%
Class AM Percentage	1.853102	%
Class M1 Percentage	1.694293	%
Class B Percentage	1.482500	%

Class A Prepayment Percentage	100.0000	%

Original Credit Support AM	3.00	%
Original Credit Support M1	1.40	%
Original Credit Support B1	0.85	%
Original Credit Support B2	0.50	%
Original Credit Support B3	0.30	%
Original Credit Support B4	0.20	%

Current Credit Support AM	3.18	%
Current Credit Support M1	1.48	%
Current Credit Support B1	0.90	%
Current Credit Support B2	0.53	%
Current Credit Support B3	0.32	%
Current Credit Support B4	0.21	%

Page 10 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Aggregate Outstanding Interest Shortfalls
Class A1 Shortfall			0.00
Class A2 Shortfall			0.00
Class A3 Shortfall			0.00
Class A4 Shortfall			0.00
Class A5 Shortfall			0.00
Class A6 Shortfall			0.00
Class A8 Shortfall			0.00
Class A9 Shortfall			0.00
Class A10 Shortfall			0.00
Class A11 Shortfall			0.00
Class A12 Shortfall			0.00
Class AR Shortfall			0.00
Class AX Shortfall			0.00
Class AM Shortfall			0.00
Class M1 Shortfall			0.00
Class B1 Shortfall			0.00
Class B2 Shortfall			0.00
Class B3 Shortfall			0.00
Class B4 Shortfall			0.00
Class B5 Shortfall			0.00

Compensating Interest Shortfalls

Total Compensating Interest Shortfall			0.00
Compensating Interest Shortfall A1			0.00
Compensating Interest Shortfall A2			0.00
Compensating Interest Shortfall A3			0.00
Compensating Interest Shortfall A4			0.00
Compensating Interest Shortfall A5			0.00
Compensating Interest Shortfall A6			0.00
Compensating Interest Shortfall A8			0.00
Compensating Interest Shortfall A9			0.00
Compensating Interest Shortfall A10			0.00
Compensating Interest Shortfall A11			0.00
Compensating Interest Shortfall A12			0.00
Compensating Interest Shortfall AR			0.00
Compensating Interest Shortfall AX			0.00
Compensating Interest Shortfall AM			0.00
Compensating Interest Shortfall M1			0.00
Compensating Interest Shortfall B1			0.00
Compensating Interest Shortfall B2			0.00
Compensating Interest Shortfall B3			0.00
Compensating Interest Shortfall B4			0.00
Compensating Interest Shortfall B5			0.00

Page 11 of 11

Chase Mortgage Finance Trust, Series 2007-S1

July 25, 2007

Relief Act Shortfalls

Total Relief Act			0.00

Relief Act Reduction A1			0.00
Relief Act Reduction A2			0.00
Relief Act Reduction A3			0.00
Relief Act Reduction A4			0.00
Relief Act Reduction A5			0.00
Relief Act Reduction A6			0.00
Relief Act Reduction A8			0.00
Relief Act Reduction A9			0.00
Relief Act Reduction A10			0.00
Relief Act Reduction A11			0.00
Relief Act Reduction A12			0.00
Relief Act Reduction AR			0.00
Relief Act Reduction AX			0.00
Relief Act Reduction AM			0.00
Relief Act Reduction M1			0.00
Relief Act Reduction B1			0.00
Relief Act Reduction B2			0.00
Relief Act Reduction B3			0.00
Relief Act Reduction B4			0.00
Relief Act Reduction B5			0.00

Yield Maintenance Agreement Amounts Received
Class A1			0.00
Class A3			0.00
Class A4			0.00

Reserve Fund - Per Yield Maintenance Agreements
Deposit Total In the Reserve Fund			0.00
Withdrawal Total From the Reserve Fund			0.00

ADDITIONAL POOL PERFORMANCE INFORMATION

Any material modifications, extensions or waivers to pool asset terms, fees, penalties or payments during the distribution period or that have cumulatively become material over time.			NO

Material breaches of pool asset representations or warranties or transaction covenants.			NO

Material changes as to methodology regarding calculations of delinquencies and charge-offs			NO

Chase Mortgage Finance Trust Series 2007-S1 10-D