Guides
Plain-language explanations with links to the official source for every rule.
- How Oklahoma property tax is calculated — The four-step formula Oklahoma counties use: taxable market value, assessment ratio, exemptions and mill levy, with a worked example.
- Oklahoma homestead exemption: who qualifies and how to file — Homestead exemption rules for 2026 in OKC-metro counties: the March 15 deadline, OTC Form 921, eligibility and how much it saves.
- Senior valuation freeze in the OKC metro (2026) — Oklahoma senior property valuation freeze: age 65+, 2026 income limits by county ($74,000 to $99,000 in OKC-metro counties), Form 994 and the March 15 deadline.
- Why property taxes can rise after you buy a home in Oklahoma — In Oklahoma the 3% annual valuation cap resets when a property sells, so a buyer’s first tax bill can be higher than the seller’s. Here is how to estimate it.
- How to protest your property valuation in Oklahoma — You generally have 30 days from the mailing date of a notice of valuation increase to file a protest (OTC Form 974) with the county assessor. Steps and links.
- When are property taxes due in the OKC metro? — Oklahoma property tax bills go out in late fall. Canadian County: half by December 31 and half by March 31, or the full amount is delinquent January 1.
Data last verified against official sources: October 16, 2026.