No. Oklahoma imposes no state estate tax and no inheritance taxNo state estate or inheritance tax. Oklahoma's estate tax was repealed for deaths on or after January 1, 2010 — 68 O.S. §§ 801–803, 805–825 repealed by Laws 2006, 2nd Extra. Sess., c. 42, § 6 (HB 1172). Only the inert federal-credit pickup shell (§ 804, $0 since the 26 U.S.C. § 2011 credit was zeroed out) and the lien-release provision (§ 804.1) remain codified; neither imposes tax.Verified Sep 15, 2026View source. Only the federal estate tax applies, on an estate above $15,000,00026 USC 2001(c), 2010; P.L. 119-21 §70106Verified Sep 15, 2026View source, an exemption the One Big Beautiful Bill Act (P.L. 119-21 §70106) set permanently from 2026 and indexes for inflation.
Not on the inheritance itself: Oklahoma taxes neither the estate nor the beneficiaryNo state estate or inheritance tax. Oklahoma's estate tax was repealed for deaths on or after January 1, 2010 — 68 O.S. §§ 801–803, 805–825 repealed by Laws 2006, 2nd Extra. Sess., c. 42, § 6 (HB 1172). Only the inert federal-credit pickup shell (§ 804, $0 since the 26 U.S.C. § 2011 credit was zeroed out) and the lien-release provision (§ 804.1) remain codified; neither imposes tax.Verified Sep 15, 2026View source, and the IRS does not treat an inheritance as income. What an heir can owe is income tax on withdrawals from an inherited retirement account, and capital gains on a later sale of inherited property, where the basis is reset to fair market value on the date of death26 USC § 1014Verified Sep 15, 2026View source and the gain faces ordinary income tax at the state's regular rates68 O.S. § 2358(F) (individual capital gain deduction); § 2358(D) (same deduction for corporations, ESTATES and TRUSTS); § 2355(D) (TY2026+ rate schedule); § 2355(J) (fiduciaries taxed at single-filer rates)Verified Sep 15, 2026View source.
No. The IRS does not treat inherited money, real estate or personal items as income, so a beneficiary in Oklahoma does not report them on a federal return when received. Two exceptions: an inherited retirement account (a 401(k) or a traditional IRA) is taxed as ordinary income as it is withdrawn, and earnings after the date of death are taxable. Inherited property takes a stepped-up basis, its value on the date of death, for any later capital gain.
When someone dies, the cost basis of the property they leave is reset to its fair market value on the date of death26 USC § 1014Verified Sep 15, 2026View source under IRC § 1014. A later sale is taxed on the gain above that stepped-up basis, not above what the original owner paid, so the appreciation of the owner's lifetime is never taxed. The rule is federal and applies in Oklahoma as in every state.
Oklahoma intestacy law decides. Oklahoma follows separate property rules84 Okla. Stat. § 213Verified Sep 10, 2026View source: the surviving spouse's share depends on whether children survive and whose children they are. The estate passes to the closest surviving relatives, in most cases the spouse and children first, then in order: Parents; Siblings and their descendants; Grandparents and their descendants; Next of kin in equal degree; The state, for the support of the common schools (escheat)84 Okla. Stat. § 213Verified Sep 10, 2026View source.