Selling a business in Oklahoma: what the state takes (2026)
Oklahoma’s top individual income tax rate is 4.5%. Here is what an owner selling company stock pays, with 2026 rules from official sources and worked examples at $10 million, $25 million and $50 million.
- 4.5%
- Top Oklahoma income tax rate (2026)
- $1,125,000
- State tax on a $25M long-term gain
- 28.3%
- Combined federal and state rate on $25M
- 25 of 51
- Rank by total tax on $25M (1 = highest)
How Oklahoma taxes a business sale
- Income tax
- Top rate 4.5%: Over $7,200 of taxable income (single); over $14,400 (joint).
- Long-term capital gains
- Capital gains are taxed as ordinary income at up to 4.5%. Gain on stock of a company headquartered in Oklahoma for at least three years, held at least two years, is fully deductible (see below); the examples assume a company that does not qualify.
- Relief that applies only in some sales
- Oklahoma allows a 100% deduction of qualifying net capital gain (68 O.S. 2358; Form 561) on the sale of stock or an ownership interest in an Oklahoma company, LLC or partnership owned for at least two uninterrupted years. It also covers the sale of substantially all assets of such a business held for two years. An 'Oklahoma company' must have had its primary headquarters in Oklahoma for at least three uninterrupted years before the sale. A founder selling an Oklahoma-headquartered company would typically qualify and owe no Oklahoma tax on the gain; a company headquartered elsewhere does not qualify.
- Entity-level taxes
- S corps and partnerships can elect the entity-level tax under the Pass-Through Entity Tax Equity Act of 2019; electing entities report qualifying gain on Form 561-PTE.
Three worked examples
| Long-term gain | $10,000,000 | $25,000,000 | $50,000,000 |
|---|---|---|---|
| Federal capital gains tax (20%) | $2,000,000 | $5,000,000 | $10,000,000 |
| Net investment income tax (3.8%) | $380,000 | $950,000 | $1,900,000 |
| Oklahoma tax | $450,000 | $1,125,000 | $2,250,000 |
| Total tax | $2,830,000 | $7,075,000 | $14,150,000 |
| Effective combined rate | 28.30% | 28.30% | 28.30% |
| Net proceeds after tax | $7,170,000 | $17,925,000 | $35,850,000 |
| Extra tax versus Texas | $450,000 | $1,125,000 | $2,250,000 |
Seller’s tax calculator
Estimate federal and state tax on a stock sale and what is left before fees and debt.
- Long-term capital gain
- $25,000,000
- Federal capital gains tax (20%)
- $5,000,000
- Net investment income tax (3.8%)
- $950,000
- Oklahoma tax
- $1,125,000
- Taxable gain at 4.5%
- $1,125,000
- Total tax
- $7,075,000
- Effective rate on the gain
- 28.30%
- Net proceeds after tax
- $17,925,000
Illustration, not tax advice. Assumes a resident individual, the whole gain long-term, top marginal rates, no state credits, installment terms, QSBS exclusion or other planning, and no local taxes. Net proceeds are before transaction fees, debt repayment, escrows and earn-outs. Rates are for tax year 2026 where published; see the methodology.
Compare with other states
Neighboring states
Common comparisons
- California37.1% combined, $15.72M net
- New York34.1% combined, $16.48M net
- Florida23.8% combined, $19.05M net
- Nevada23.8% combined, $19.05M net
- Washington33.5% combined, $16.63M net
- Tennessee23.8% combined, $19.05M net
Methodology and sources
Oklahoma figures are for tax year 2026. 2026 rates set by HB 2764 (2025), amending 68 O.S. 2355(D): six brackets collapsed to three and the top rate cut from 4.75% to 4.5% from tax year 2026. Brackets are not indexed. A revenue trigger can cut rates by 0.25 point from 2027. The examples assume a resident individual selling privately held stock for a long-term gain equal to the sale price (zero basis), with every dollar taxed at the top marginal rates, the federal 20% capital gains rate and the 3.8% net investment income tax, and no planning, credits or local taxes. Full assumptions are in the report methodology.
All 50 states and DC with source URLs.
- 1Oklahoma Enrolled HB 2764 (2025), amending 68 O.S. 2355 rates for tax year 2026
- 2Oklahoma Tax Commission 2025 Form 561, Oklahoma Capital Gain Deduction (68 O.S. 2358, Rule 710:50-15-48)
- 3Tax Foundation, State Individual Income Tax Rates and Brackets, 2026. Secondary source
Data last updated October 26, 2026.
Cite this research
You may quote and republish figures from this page with attribution and a link to the source.
Citation
Laurent Capital Research, “The Seller’s Tax Map: What Selling a Business Costs in Every State (2026): Oklahoma,” 2026, https://laurent.capital/research/seller-tax-map/oklahomaLink (HTML)
<a href="https://laurent.capital/research/seller-tax-map/oklahoma">The Seller’s Tax Map: What Selling a Business Costs in Every State (2026): Oklahoma</a> (Laurent Capital)Planning a sale and weighing the tax cost?
We work alongside your tax advisors from the first valuation conversation, so structure and timing are settled before a buyer is at the table.