N.D. Admin. Code § 81-09-02-03.1 — Interest on refunds

The commissioner does not have the authority to pay interest on a claim for credit of tax. Interest of ten percent per annum must be paid on tax refunds. The daily interest rate is .000277. Interest accrues from sixty days after the due date of the return or after the return was filed or after the tax was fully paid, whichever comes later, through the date the refund is mailed to the taxpayer.