•   Investors can calculate the amount of interest to be distributed (or accrued in the case of an Accrual Class) on each Class of Securities for any Distribution Date by using the Class Factors published in the preceding month. See "– Class Factors" below. Categories of Classes For  purposes  of  interest  distributions,  the  Classes  will  be  categorized  as  shown  under "Interest Type" on the front cover of this Supplement and on Schedule I to this Supplement. The abbreviations used on the front cover and on Schedule I to this Supplement are explained under "Class Types" in Appendix I to the Base Offering Circular. Accrual Periods The Accrual Period for each Class is set forth in the table below: Class Accrual Period Fixed Rate and Delay Classes The calendar month preceding the related Distribution Date Group 1, 2, 3, 4, 5 and 6 Floating Rate and Inverse Floating Rate Classes (other than Delay Classes) From the 20th day of the month preceding the month of the related Distribution Date through the 19th day of the month of that Distribution Date Group 7 Floating Rate and Inverse Floating Rate Classes From the 16th day of the month preceding the month of the related Distribution Date through the 15th day of the month of that Distribution Date Fixed Rate Classes Each Fixed Rate Class will bear interest at the per annum Interest Rate shown on the front cover of this Supplement or on Schedule I to this Supplement. Floating Rate and Inverse Floating Rate Classes The Floating Rate and Inverse Floating Rate Classes will bear interest as shown under "Terms Sheet – Interest Rates" in this Supplement. The Interest Rates for the Floating Rate and Inverse Floating Rate Classes will be based on LIBOR. LIBOR will be determined based on the BBA LIBOR method, as described under "Description of the Securities – Interest Rate Indices – Determination of LIBOR – BBA LIBOR" in the Base Offering Circular. In the case of the Group 2, 6 and 7 Securities, the Trustee will use the same values of LIBOR as are used for the related Underlying Certificates. For  information  regarding  the  manner  in  which  the  Trustee  determines  LIBOR  and calculates  the  Interest  Rates  for  the  Floating  Rate  and  Inverse  Floating  Rate  Classes,  see "Description of the Securities – Interest Rate Indices – Determination of LIBOR" in the Base Offering Circular. The Trustee's determination of LIBOR and its calculation of the Interest Rates will be final, except in the case of clear error. Investors can obtain LIBOR levels and Interest Rates for the current and preceding Accrual Periods from Ginnie Mae's Multiclass Securities e-Access located on Ginnie Mae's website ("e-Access") or by calling the Information Agent at (800) 234-GNMA. S-15