OK HB2962

Removes the existing 3-year time limitation for filing income tax refund claims due to overpayment, allowing claims to be filed without limitation as to time from the return due date

Eliminates caps on refund amounts that were previously tied to taxes paid within specific time periods preceding the claim

Confirms that time limitations do not apply to refund claims filed by members of federally recognized Indian tribes, the United States on behalf of Indian wards, or for taxes illegally collected from tax-exempt Indian lands

Maintains 6% annual interest on refunds issued after January 1, 1996 for illegally collected taxes on bonus payments from oil and gas leases on tax-exempt Indian lands

Effective date: November 1, 2026