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Oklahoma Tax Calculator

The Oklahoma (OK) Tax Calculator is updated for the 2026/27 tax year. It estimates Oklahoma state income tax, federal income tax, and FICA/Medicare contributions, providing an accurate picture of your net take-home pay. Oklahoma applies a progressive income tax based on taxable income, with several deductions and credits that can significantly lower your tax bill.

This calculator helps you model both resident and nonresident filings, including popular state-specific adjustments such as the Child Tax Credit, Retirement Income Exclusion, and Credit for Taxes Paid to Another State.

Quick Access Tools

Quick Oklahoma Tax Calculator

Enter income and filing status, then click Calculate for an instant estimate. Expand tabs to include deductions, dependents, retirement savings, and withholdings for a full federal and Oklahoma tax projection.

Input key: F Used in Federal tax calculations S Used in State tax calculations

Quick Tax Calculation Detailed Tax Calculation
Filing Information Quick Inputs Income Details Deductions & Adjustments State Options IRA, Pensions & Annuities Withholdings

Filing Information

Set your filing status, dependants and personal details so the calculator can apply the correct Federal and State rules.

Quick Inputs

Provide a summary of your income and deductions to calculate your Federal and State tax position quickly.

Income Details

Enter the specific types of income that contribute to your Federal Adjusted Gross Income.

For Schedule B

Deductions & Adjustments

Deductions & Adjustments

Include any adjustments to income that reduce your Federal/State Adjusted Gross Income.

State Options

Some states apply local income taxes in addition to State tax. Enter your local rate if it applies.

IRA, Pensions & Annuities

Enter the details for your retirement contributions and income sources, which are used to compute values on **Form 8606**. This includes contributions to traditional IRAs, 529 savings plans, and rollovers, as well as income from rental properties, farms, unemployment, and other sources. Additionally, provide information on any disaster-related distributions or IRA rollovers you’ve made, and enter your capital gain distributions if applicable. These inputs are essential for accurately calculating your total retirement-related income and determining your tax liabilities or benefits, specifically regarding IRA deductions and distributions as outlined in **Form 8606**.

Withholdings

Enter withheld amounts to calculate refund or balance due.

How to Calculate Income Tax in Oklahoma for 2026/27

  1. Enter your annual income and optional deductions.
  2. Choose your filing status — single, married, or head of household.
  3. Click Calculate to view estimated state and federal taxes, credits, and take-home pay.

Advanced Options

  • Add dependents and family credits to reflect child and household adjustments.
  • Model IRA or 401(k) contributions to reduce taxable income.
  • Include state withholdings and estimated payments for refund forecasting.
  • Apply credits like the Oklahoma Earned Income Credit or the Credit for Taxes Paid to Another State.

Related Calculators

Additional Resources

Frequently Asked Questions

Answers to common Oklahoma tax questions, including filing rules for residents and nonresidents, credit eligibility, and popular deductions.

How do I “dial in” withholding to hit near-zero due/refund in OK?

Run a full-year projection with realistic bonuses and benefit changes. Add a modest per-pay extra withholding on OK-W-4 if the tool shows you trending toward a balance due; recheck after any raise or job change.

Does OK tax remote workers?

Residents are taxed on all income; nonresidents owe OK tax on OK-sourced wages. Confirm sourcing if working across state lines.

Any quick way to compare years in OK?

Toggle the tax year on the OK calculator using the same inputs to see how brackets/deductions change your net.

How are prizes/awards treated?

Usually taxable as income; withholding may apply on large amounts.

Are scholarships/fellowships taxable in OK?

Generally follow federal rules—taxable if for non-qualified expenses; nontaxable for qualified tuition/fees.

Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.