Quick answer: up to 4.5% state tax for 2026, unless the sale qualifies for Oklahoma's distinctive 100% long-term ownership deduction — which most estates selling soon after inheriting won't yet meet. See the full cost picture in the Oklahoma probate real estate sale calculator.
A genuinely rare full exclusion
The five-year clock rarely favors a quick estate sale
An estate or heir selling an inherited house shortly after death usually hasn't held the property under this deduction's own ownership rule for five uninterrupted years — the requirement generally has to be met by the current owner, so a prompt post-inheritance sale typically doesn't qualify on its own, even though the decedent may have owned the house for decades.
The deduction survived a 2025 repeal attempt
A 2025 bill, Senate Bill 48, proposed eliminating this deduction starting with tax year 2026, but the bill died without passing — the deduction remains in place under current law, though its long-term future has clearly been debated.
Without the deduction, ordinary rates apply
Absent the special deduction, the gain is taxed under Oklahoma's ordinary progressive brackets, topping out at 4.5% for 2026 — reduced from 4.75% the prior year, with a mechanism for further automatic 0.25% cuts when state revenue benchmarks are certified.
A local probate attorney can review your estate — many offer a free consultation.
The 4.5% top rate and the §2358 deduction rules apply identically whether the sale closes in Oklahoma, Tulsa, Cleveland, or any other Oklahoma county.