(i) In general.
Payments for a qualified guarantee must be allocated to bonds and to computation periods in a manner that properly reflects the proportionate credit risk for which the guarantor is compensated. Proportionate credit risk for bonds that are not substantially identical may be determined using any reasonable, consistently applied method. For example, this risk may be based on the ratio of the total principal and interest paid and to be paid on a guaranteed bond to the total principal and interest paid and to be paid on all bonds of the guaranteed issue. An allocation method generally is not reasonable, for example, if a substantial portion of the fee is allocated to the construction portion of the issue and a correspondingly insubstantial portion is allocated to the later years covered by the guarantee. Reasonable letter of credit SET UP fees may be allocated ratably during the initial term of the letter of credit. Upon an early redemption of a variable yield bond, fees otherwise allocable to the period after the redemption are allocated to remaining outstanding bonds of the issue or, if none remain outstanding, to the period before the redemption.
(ii) Safe harbor for allocation of qualified guarantee fees for variable yield issues.
An allocation of non-level payments for a qualified guarantee for variable yield bonds is treated as meeting the requirements of paragraph (f)(6)(i) of this section if, for each bond year for which the guarantee is in effect, an equal amount (or for any short bond year, a proportionate amount of the equal amount) is treated as paid as of the beginning of that bond year. The present value of the annual amounts must equal the fee for the guarantee allocated to that bond, with present value computed as of the first day the guarantee is in effect by using as the discount rate the yield on the variable yield bonds covered by the guarantee, determined without regard to any fee allocated under this paragraph (f)(6)(ii).