Fannie Mae REMIC Tax Factors

1100 15th Street, NW

Washington, DC 20005

1-800-2FANNIE

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Electronic Factor Reporting System

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Bond information is contained in two accompanying electronic files; the

file with a .TYP extension contains bond-level information, one record

per bond, and the .FAC file contains factor information, one record per

payment period per bond.

RECORD LAYOUT FOR REMIC TYPE FLATFILE:

Field Pos Len Remarks

---------------------------------------

REMIC 1-8 8 Name of REMIC including series

Fill 9 1 blank

Tranche 10-17 8 Class Name

CUSIP 18-26 9 CUSIP for the Class

Fill 27 1 blank

DiscType 28-37 10 Discount Status (OID, AT PAR, PREMIUM, DE MINIMIS)

IntClas 38-51 14 Interest: Qualified/Non-Qualified/Zero/N/A (residual)

IntType 52-60 9 Fixed / Variable / N/A

ClasType 61-68 8 Regular or Residual Class

PayoffDte 69-76 8 Date paid to Zero yyyymmdd (if applicable, else blank)

Fill 77 1 blank

REMICEin 78-87 10 EIN for the REMIC Trust

PAR 88-102 15 Original Issue Face (2 decimal places)

Fill 103 1 blank

IssueDte 104-111 8 Date Class was issued (yyyymmdd)

Fill 112 1 blank

Retail 113-123 11 Retail Status - Random Lot / Pro Rata / N/A

PerUnit 124-132 9 Sales unit (2 decimal places) This is almost always

$1000. If this is not the case, factors are still

reported per 1000.

RECORD LAYOUT FOR REMIC FACTOR FLATFILE:

Field Pos Len Remarks

---------------------------------------

REMIC 1-8 8 Name of REMIC including series

Fill 9 1 blank

Tranche 10-17 8 Class Name

CUSIP 18-26 9 CUSIP for the Class

Fill 27 1 blank

Enddate 28-35 8 Accrual Period End Date (yyyymmdd)

Length 36-38 3 Length of Accrual Period

QualInt 39-53 15 Qualified Interest Factor (8 decimal places)

OID 54-70 17 OID Factor (8 decimal places)

DailyOID 71-87 17 Daily OID Factor (8 decimal places)

BegAip 88-104 17 Adj Issue Price at Start of Period (8 decimal places)

MDF 105-118 14 Market Discount Fraction (8 decimal places)

Fill 119 1 blank

BegDate 120-127 8 Start date for Accrual Period (yyyymmdd)

DailyInt 128-142 15 Daily Qualified Interest Factor (8 decimal places)

UPB 143-159 17 Unpaid balance factor (8 decimal places)

Fill 160 1 blank

FLAG 161 1 Negative MDF Flag: indicates a class ('N' or 'Y') that

produces negative Market Discount fractions due to a

negative yield. These are forced to zero in the report.

Fill 162 1 blank

RE% 163-167 5 Real Estate Percentage

RECORD LAYOUT FOR SINGLE-CLASS REMIC TYPE FLATFILE:

Field Pos Len Remarks

---------------------------------------

REMIC 1-8 8 Name of REMIC including series

Fill 9 1 blank

Tranche 10-17 8 Class Name

CUSIP 18-26 9 CUSIP for the Class

Fill 27 1 blank

DiscType 28-37 10 Discount Status (OID, AT PAR, PREMIUM, DE MINIMIS)

IntClas 38-51 14 Interest: Qualified/Non-Qualified/Zero/N/A (residual)

IntType 52-60 9 Fixed / Variable / N/A

ClasType 61-68 8 Regular or Residual Class

PayoffDte 69-76 8 Date paid to Zero yyyymmdd (if applicable, else blank)

Fill 77 1 blank

REMICEin 78-87 10 EIN for the REMIC Trust

PAR 88-102 15 Original Issue Face (2 decimal places)

Fill 103 1 blank

IssueDte 104-111 8 Date Class was issued (yyyymmdd)

Fill 112 1 blank

Retail 113-123 11 Retail Status - Random Lot / Pro Rata / N/A

PerUnit 124-132 9 Sales unit (2 decimal places) This is almost always $1000. If this is not the case, factors are still

reported per 1000.

RECORD LAYOUT FOR SINGLE-CLASS REMIC FACTOR FLATFILE:

Field Pos Len Remarks

---------------------------------------

REMIC 1-8 8 Name of REMIC including series

Fill 9 1 blank

Tranche 10-17 8 Class Name

CUSIP 18-26 9 CUSIP for the Class

Fill 27 1 blank

Enddate 28-35 8 Accrual Period End Date (yyyymmdd)

Length 36-38 3 Length of Accrual Period

QualInt 39-53 15 Qualified Interest Factor (8 decimal places)

OID 54-70 17 OID Factor (8 decimal places)

DailyOID 71-87 17 Daily OID Factor (8 decimal places)

BegAip 88-104 17 Adj Issue Price at Start of Period (8 decimal places)

MDF 105-118 14 Market Discount Fraction (8 decimal places)

Fill 119 1 blank

BegDate 120-127 8 Start date for Accrual Period (yyyymmdd)

DailyInt 128-142 15 Daily Qualified Interest Factor (8 decimal places)

UPB 143-159 17 Unpaid balance factor (8 decimal places)

Fill 160 1 blank

FLAG 161 1 Negative MDF Flag: indicates a class ('N' or 'Y') that produces negative Market Discount fractions due to a negative yield. These are forced to zero in the report.

Fill 162 1 blank

RE% 163-167 5 Real Estate Percentage

Fill 168 1 blank

ServFee 169-183 15 Servicing Fee Income Accrual Period (8 decimal places)

RECORD LAYOUT FOR SMBS TYPE FLATFILE:

Field Pos Len Remarks

---------------------------------------

REMIC 1-8 8 Name of REMIC including series

Fill 9 1 blank

Tranche 10-17 8 Class Name

CUSIP 18-26 9 CUSIP for the Class

Fill 27 1 blank

DiscType 28-37 10 Discount Status (OID, AT PAR, PREMIUM, DE MINIMIS)

IntClas 38-51 14 Interest: Qualified/Non-Qualified/Zero/N/A (residual)

IntType 52-60 9 Fixed / Variable / N/A

ClasType 61-68 8 Regular or Residual Class

PayoffDte 69-76 8 Date paid to Zero yyyymmdd (if applicable, else blank)

Fill 77 1 blank

REMICEin 78-87 10 EIN for the REMIC Trust

PAR 88-102 15 Original Issue Face (2 decimal places)

Fill 103 1 blank

IssueDte 104-111 8 Date Class was issued (yyyymmdd)

Fill 112 1 blank

Retail 113-123 11 Retail Status - Random Lot / Pro Rata / N/A

PerUnit 124-132 9 Sales unit (2 decimal places) This is almost always $1000. If this is not the case, factors are still

reported per 1000.

RECORD LAYOUT FOR SMBS FACTOR FLATFILE:

Field Pos Len Remarks

---------------------------------------

REMIC 1-8 8 Name of REMIC including series

Fill 9 1 blank

Tranche 10-17 8 Class Name

CUSIP 18-26 9 CUSIP for the Class

Fill 27 1 blank

Enddate 28-35 8 Accrual Period End Date (yyyymmdd)

Length 36-38 3 Length of Accrual Period

QualInt 39-53 15 Qualified Interest Factor (8 decimal places)

OID 54-70 17 OID Factor (8 decimal places)

DailyOID 71-87 17 Daily OID Factor (8 decimal places)

BegAip 88-104 17 Adj Issue Price at Start of Period (8 decimal places)

MDF 105-118 14 Market Discount Fraction (8 decimal places)

Fill 119 1 blank

BegDate 120-127 8 Start date for Accrual Period (yyyymmdd)

DailyInt 128-142 15 Daily Qualified Interest Factor (8 decimal places)

UPB 143-159 17 Unpaid balance factor (8 decimal places)

Fill 160 1 blank

FLAG 161 1 Negative MDF Flag: indicates a class ('N' or 'Y') that produces negative Market Discount fractions due to a negative yield. These are forced to zero in the report.

Fill 162 1 blank

RE% 163-167 5 Real Estate Percentage

Fill 168 1 blank

Admin 169-183 15 Servicing Fee Income Accrual Period (8 decimal places)