.06 Carryover of Excess Credit.

If the credit allowed to the business entity in any taxable year exceeds the total of tax otherwise payable for that taxable year, the business entity may apply the excess as a credit for succeeding taxable years until the earlier of:

A. The full amount of the excess credit is used; or

B. The expiration of the fifth taxable year after the taxable year in which the originating credit was claimed.