United States · State income tax
Oklahoma state income tax rate 2027.
Oklahoma’s bracket schedule from the official source, with the 2026 figures and a labelled projected 2027 column.
Short answer: Oklahoma has 4 brackets for 2026 with rates from 0% to 4.5%. The top rate starts at $7,200 of taxable income for single filers and $14,400 for joint filers. No different 2027 schedule is enacted yet, so the 2027 column carries the 2026 schedule forward and is labelled projected.
Estimate your tax
Result
Enter your Oklahoma taxable income and press Estimate.
The Oklahoma schedule
Enrolled HB 2764 (oklegislature.gov), amending 68 O.S. 2355(D) for tax year 2026: single/MFS 0% on first $3,750, 2.5% next $1,150, 3.5% next $2,300, 4.5% remainder; MFJ (and surviving spouse and heads of household) 0% first $7,500, 2.5% next $2,300, 3.5% next $4,600, 4.5% remainder. Dollar edges are statutory, computed here as cumulative sums. Read from the enrolled bill, not the OTC Form 511.
Single filers
| Taxable income | Rate, 2026 | Rate, 2027 (projected) |
|---|---|---|
| $0 to $3,750 | 0% | 0% |
| $3,750 to $4,900 | 2.5% | 2.5% |
| $4,900 to $7,200 | 3.5% | 3.5% |
| Over $7,200 | 4.5% | 4.5% |
Joint filers
| Taxable income | Rate, 2026 | Rate, 2027 (projected) |
|---|---|---|
| $0 to $7,500 | 0% | 0% |
| $7,500 to $9,800 | 2.5% | 2.5% |
| $9,800 to $14,400 | 3.5% | 3.5% |
| Over $14,400 | 4.5% | 4.5% |
Deductions, exemptions and local tax
Oklahoma’s standard deduction, exemption and credit amounts are not stated here because they were not read from the Oklahoma tax agency’s own pages on November 9, 2026. Use the state’s current return instructions. None of them is modelled.
None; Oklahoma has no local income tax.
What changes in 2027 (projected)
2355(E) reduces every rate by 0.25 percentage point only if the State Board of Equalization certifies collections exceed the base year plus the reduction threshold (first possible certification Dec 2026/Feb 2027, effective Jan 1 after, subject to a 95% revenue test and revenue-failure block); no cut is certain, so 2027 rates are not fixed.
The 2027 column above carries the 2026 schedule forward. That is a projection, not an enacted 2027 schedule, and it is labelled that way wherever it appears.
Worked example (2026 schedule)
A single filer with $80,000 of Oklahoma taxable income owes $3,385 under the 2026 schedule, an effective rate of 4.23% and a marginal rate of 4.5%. A joint filer with $150,000 of Oklahoma taxable income owes $6,321 under the 2026 schedule, an effective rate of 4.21% and a marginal rate of 4.5%. The 2027 projection for the same incomes is the same dollar amount ($3,385 and $6,321) because the 2026 schedule is carried forward.
Common mix-ups
- Oklahoma still has six brackets topping out at 4.75%. HB 2764 sets four brackets from 0% to 4.5% for tax year 2026.
- Joint filers get the same dollar brackets as single filers. MFJ brackets are exactly double: $7,500 / $2,300 / $4,600 widths versus $3,750 / $1,150 / $2,300.
- The 4.5% rate will fall to 4.25% in 2027. Only if the Board of Equalization certifies the revenue trigger in 68 O.S. 2355(E); nothing is guaranteed.
- There is a 0% rate only in the form's tax table. The statute itself sets 0% on the first $3,750 (single) / $7,500 (joint).
Method
The tool applies each bracket rate only to the slice of income inside that bracket, adds the slices and divides by income for the effective rate; the marginal rate is the rate of the bracket that contains your income. The 2027 line uses the 2026 schedule and is shown as projected. Nothing you type is sent to our servers; the maths runs in your browser. For a full paycheck including federal and payroll taxes, use the paycheck calculator, and for comparing states see the state income tax calculator.
What this does not cover
- Deductions, exemptions and credits. Enter income after them.
- Head of household, part-year or nonresident returns, and income taxed at special rates.
- Local income taxes and surtaxes beyond the bracket schedule.
- Any 2027 law change that has not been enacted yet.
Figures read from the sources below on November 9, 2026. Last updated November 9, 2026.
Sources
- Enrolled HB 2764 (60th Legislature) (2026 rate table and rate-reduction triggers) (retrieved November 9, 2026)
Frequently asked questions
What is the Oklahoma state income tax rate for 2027?
Oklahoma has not enacted a different 2027 schedule that this page could read, so the 2027 figures are projected by carrying forward the 2026 rates (0%, 2.5%, 3.5%, 4.5%).
What is the top Oklahoma income tax rate?
4.5% under the 2026 schedule. It starts at $7,200 of taxable income for single filers and $14,400 for joint filers.
How much Oklahoma income tax would I pay on $80,000?
A single filer with $80,000 of Oklahoma taxable income owes $3,385 under the 2026 schedule, an effective rate of 4.23% and a marginal rate of 4.5%. The estimator above runs your own figure.
Does this page include deductions or credits?
No. It applies the rate schedule to the taxable income you enter, so subtract your deductions and exemptions first. It does not model credits, local taxes or surtaxes.
Is the 2027 result a forecast?
It is a projection. It carries the 2026 schedule forward and is labelled projected wherever it appears. Oklahoma can change its rates or indexed brackets before the 2027 forms are issued.
Where does the information on this page come from?
Oklahoma sources read on November 9, 2026: Enrolled HB 2764. The links in the Sources section go to the originals.
Can Oklahoma's rate drop automatically?
Yes: 2355(E) lowers each rate by 0.25 point when the State Board of Equalization certifies the revenue trigger, effective the following January 1.
Not legal or tax advice
Rates change and this is an unofficial guide, not run by any state tax agency; any 2027 figure that is not enacted is a projection. Nothing you type is transmitted anywhere. Confirm with the Oklahoma tax agency or a tax professional before you file.