Mortgage Tax

Notice: To those submitting mortgage documents for mortgage tax. Due to the passage of Oklahoma HB 1392, the Treasurer’s mortgage certification fee will increase from $5.00 to $10.00 effective November 1, 2025. 68 O.S. § 1904 subsection B

Important documents related to Mortgage Tax, which are listed below, can be downloaded simply by clicking on the link.

Mortgage Tax Information Sheet
Mortgage Tax Affidavit (updated 12/01/2025)
Exempt Letter and Affidavit (updated 12/01/2025)
Exempt Letter and Affidavit (updated 12/01/2025) -- Federal Credit Unions only
National Credit Union Administration -- Letter of Exemption
Frequently Asked Questions (FAQ) about Mortgage Tax