How much is Oklahoma income tax?
Oklahoma income tax at 3 levels of Oklahoma taxable income — what is left after Oklahoma's own deductions and exemptions. Local income taxes are not included.
| Taxable income | Single | Married filing jointly |
|---|---|---|
| $50,000 | $2,0354.1% effective · 4.5% marginal | $1,8213.6% effective · 4.5% marginal |
| $100,000 | $4,2854.3% effective · 4.5% marginal | $4,0714.1% effective · 4.5% marginal |
| $250,000 | $11,0354.4% effective · 4.5% marginal | $10,8214.3% effective · 4.5% marginal |
What are Oklahoma's income tax brackets for 2026?
| Taxable income | Rate |
|---|---|
| Up to $3,750 | 0% |
| Over $3,750 up to $4,900 | 2.5% |
| Over $4,900 up to $7,200 | 3.5% |
| Over $7,200 | 4.5% |
| Taxable income | Rate |
|---|---|
| Up to $7,500 | 0% |
| Over $7,500 up to $9,800 | 2.5% |
| Over $9,800 up to $14,400 | 3.5% |
| Over $14,400 | 4.5% |
Source: 68 O.S. §2355 as amended by HB 2764 (2025), checked September 11, 2026.
Can you deduct Oklahoma income tax on your federal return?
The federal deduction for state and local taxes (SALT) is capped at $40,400 for 2026 — $20,200 if married filing separately — and the cap shrinks toward $10,000 once modified AGI passes $505,000. A single filer with $250,000 of Oklahoma taxable income owes about $11,035 in Oklahoma income tax — 27% of that cap before any property tax.
SALT cap workaroundsDoes Oklahoma have a pass-through entity tax (PTET)?
Yes. A partnership or S corporation can elect to pay Oklahoma income tax at the entity level. The business deducts it federally, so that state tax is not limited by the SALT cap, and the owners claim an Oklahoma credit or exclusion for it. Deductsy's plan treats March 15 as the Oklahoma election or first-payment deadline; it is approximate, so confirm it with Oklahoma before relying on it.
PTET savings calculatorWhen are Oklahoma estimated tax payments due?
Oklahoma estimated tax is due April 15, June 15, September 15 and January 15 of the following year, in 4 equal instalments. Those are the same dates as the federal schedule. Source: Form OW-8-ES, Oklahoma Individual Estimated Tax, Tax Year 2026 (Revised 6-2025).
Safe-harbor calculatorWhat is the penalty for underpaying Oklahoma estimated tax?
Oklahoma charges 20% a year on an underpaid instalment. Paying at least 70% of this year's tax or 100% of last year's on time avoids it. Source: Form OW-8-ES, Oklahoma Individual Estimated Tax, Tax Year 2026 (Revised 6-2025).
Are HSA contributions deductible in Oklahoma?
Yes. Oklahoma follows the federal treatment, so an HSA contribution — up to $4,400 with self-only coverage or $8,750 with family coverage for 2026 — lowers Oklahoma taxable income as well as federal.
Does Oklahoma give a tax break for 529 plan contributions?
Yes. Oklahoma lets you deduct up to $10,000 a year of contributions to Oklahoma's own 529 plan ($20,000 on a joint return). Income limits, per-beneficiary caps and carryforwards differ by state, so check the plan's rules.
529 plan tax savings calculatorWhat is the property tax rate in Oklahoma?
Oklahoma's average effective property tax rate is 0.8% — the 26th highest of 51 jurisdictions and 89% of the national average of 0.9%. That is about $800 a year for every $100,000 of home value; the rate varies widely by county and school district.
Itemize or take the standard deduction?How much does an LLC cost to keep in Oklahoma each year?
Deductsy budgets about $25 a year for an Oklahoma LLC — the annual report fee or minimum franchise tax, with a fee due every two years counted at half. Fees change, so confirm with Oklahoma's business filing office.
Oklahoma S-corp tax calculatorHow do Oklahoma taxes compare with neighboring states?
| State | Top income tax rate | Income tax on $100,000 (single) | Property tax (avg) |
|---|---|---|---|
| Oklahoma | 4.5% | $4,285 | 0.8% |
| Arkansas | 3.7% | $3,620 | 0.55% |
| Colorado | 4.4% | $4,400 | 0.48% |
| Kansas | 5.58% | $5,493 | 1.29% |
| Missouri | 4.7% | $4,555 | 0.85% |
| New Mexico | 5.9% | $4,358 | 0.7% |
| Texas | None | $0 | 1.49% |
On $100,000 of taxable income a single filer's Oklahoma income tax is $4,285 — more than in 2 of 6 neighboring states. The lowest is Texas at $0; the highest is Kansas at $5,493. Oklahoma's average property tax rate is higher than in 3 of 6.
Income tax is each state's own tax on the same state taxable income; local income taxes are not included.
Tax moves that matter most for Oklahoma
If you own an S corporation, partnership or multi-member LLC, Oklahoma's PTET election moves the Oklahoma income tax on that profit to the business, where it is deductible federally and outside the SALT cap.
An S-corp election can cut self-employment tax once profit is large enough to pay yourself a reasonable salary and still cover payroll and filing costs. The Oklahoma calculator adds Oklahoma's own entity fees and taxes to that breakeven.
With 1099 income, a Solo 401(k) can take up to $72,000 a year (2026) — usually more than a SEP-IRA at the same income. Contributions lower both federal and Oklahoma income tax.
Run your Oklahoma numbers
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