Oklahoma property tax appeal deadlines and filing windows for commercial real estate. Verify with your local assessor or appeal board for the specific jurisdiction before filing.
Verify before filing. Statutory deadlines change, and many counties operate on their own schedule inside the state framework. Always confirm the current year's window with the assessor or appeal board for the specific jurisdiction before relying on a date.
State-level deadlines plus major sub-jurisdictions where the schedule diverges from the state default. Where a column says "Varies," confirm the date with the local assessor.
| Month | Type | Event | Date | Details |
|---|---|---|---|---|
| January | RP | Assessment Date |
1-Jan | |
| January | BPP | Assessment Date |
1-Jan | |
| March | BPP | Tax Returns Due |
15-Mar | |
| April | RP | Value Notices |
Feb-Apr | Issued by April starting in February |
| April | BPP | Appeal Deadline |
Apr-Jun | Sometime from April to June, 20 days after the notices are issued. Rolling issuance of notices. |
| May | RP | Appeal Deadline |
1-May | May 1st or 20 days after notices are mailed. Rolling issuance of notices. |
| November | BPP | Tax Bills Issued |
1-Nov | |
| November | RP | Tax Bills Issued |
Nov-Dec | |
| December | RP | Tax Bills Due |
31-Dec | December 31st for 1st half installment, March 31st of following year for 2nd half of installment |
| December | BPP | Tax Bills Due |
31-Dec | December 31st for 1st half installment, March 31st of following year for 2nd half of installment |
RP = Real Property · BPP = Business Personal Property · Both = Applies to both
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