Tools · Capital Gains Tax
Oklahoma Capital Gains Tax Calculator (2026)
Estimate the tax on your capital gains in Oklahoma for 2026. Enter your gain, holding period, and other income to see federal long- or short-term tax, the 3.8% Net Investment Income Tax, and Oklahoma’s share, broken out line by line.
Oklahoma capital gains tax calculator
How to read the rows below: the slice of your gain → the tax on that slice.
- Gain taxed at 0% (long-term)
- $15,550 → $0
- Gain taxed at 15% (long-term)
- $4,450 → −$668
- Federal long-term capital gains tax
- −$668
- Net Investment Income Tax (3.8%)
- $0
- Oklahoma income tax on gain
- −$900
- Total capital gains tax
- $1,568
Oklahoma taxes capital gains as ordinary income. Oklahoma rebuilt its brackets for 2026 under HB 2764. The first $3,750 of taxable income (single) is now untaxed, and the top rate dropped from 4.75% to 4.5%. Most income above $7,200 (single) is taxed at 4.5%.
Federal: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration. State: Oklahoma Tax Commission.
Estimate for 2026. Long-term gains are stacked on top of your other taxable income across the 0/15/20% federal breakpoints; short-term gains are taxed as ordinary income. The 3.8% Net Investment Income Tax, an extra federal surtax on investment income, applies once your income clears the threshold. Excludes state credits, the alternative minimum tax, and loss carryovers. This is general information, not tax advice.
How capital gains tax works in Oklahoma
Long-term gains (assets held more than a year) get the federal 0/15/20% rates — but the rate depends on where the gain lands once it is stacked on top of your other taxable income, so part of a gain can be taxed at 0% and the rest at 15%. Short-term gains are taxed as ordinary income. On top of that, the 3.8% Net Investment Income Tax applies once your income clears $200,000 (single) or $250,000 (married-jointly).
Oklahoma taxes capital gains as ordinary income, at the same rate as your wages. Oklahoma rebuilt its brackets for 2026 under HB 2764. The first $3,750 of taxable income (single) is now untaxed, and the top rate dropped from 4.75% to 4.5%. Most income above $7,200 (single) is taxed at 4.5%.
This is an annual-bracket estimate, not your final return. It excludes the alternative minimum tax, loss carryovers, and state credits. It is general information, not tax advice. Federal figures: IRS Revenue Procedure 2025-32 (IR-2025-103) · Social Security Administration.
Capital gains calculators for other states
Same 2026 engine, each with its own state rules.