Oklahoma Tax Tables for 2018
The 2018 Oklahoma Tax Tables summarise the state-level rules applied to wages, deductions, credits and taxable income. These tables match the rules used by the Oklahoma State Tax Calculator 2018.
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Oklahoma Tax Tables for 2018
The tables below outline the income tax structure, deduction amounts, state-level credits and payroll-related rules used for Oklahoma in 2018. Oklahoma uses filing-status–specific progressive income tax tables. Income is divided into brackets and each portion is taxed at its marginal rate. The table below shows the full structure for this filing status. For a full explanation of marginal brackets, see our Tax Tables guide.
Single – Progressive Tax Brackets (2018)
Marginal income tax brackets for Single filers in Oklahoma for 2018. Only the portion of income within each bracket is taxed at the stated rate.
| Bracket | Range | Rate |
|---|---|---|
| 1 | $ 0.00 to $ 1,000.00 | 0.5% |
| 2 | $ 1,000.00 to $ 2,500.00 | 1% |
| 3 | $ 2,500.00 to $ 3,750.00 | 2% |
| 4 | $ 3,750.00 to $ 4,900.00 | 3% |
| 5 | $ 4,900.00 to $ 7,200.00 | 4% |
| 6 | $ 7,200.00 and over | 5% |
Married filing jointly – Progressive Tax Brackets (2018)
Marginal income tax brackets for Married filing jointly filers in Oklahoma for 2018. Only the portion of income within each bracket is taxed at the stated rate.
| Bracket | Range | Rate |
|---|---|---|
| 1 | $ 0.00 to $ 2,000.00 | 0.5% |
| 2 | $ 2,000.00 to $ 5,000.00 | 1% |
| 3 | $ 5,000.00 to $ 7,500.00 | 2% |
| 4 | $ 7,500.00 to $ 9,800.00 | 3% |
| 5 | $ 9,800.00 to $ 12,200.00 | 4% |
| 6 | $ 12,200.00 and over | 5% |
Married filing separately – Progressive Tax Brackets (2018)
Marginal income tax brackets for Married filing separately filers in Oklahoma for 2018. Only the portion of income within each bracket is taxed at the stated rate.
| Bracket | Range | Rate |
|---|---|---|
| 1 | $ 0.00 to $ 1,000.00 | 0.5% |
| 2 | $ 1,000.00 to $ 2,500.00 | 1% |
| 3 | $ 2,500.00 to $ 3,750.00 | 2% |
| 4 | $ 3,750.00 to $ 4,900.00 | 3% |
| 5 | $ 4,900.00 to $ 7,200.00 | 4% |
| 6 | $ 7,200.00 and over | 5% |
Head of household – Progressive Tax Brackets (2018)
Marginal income tax brackets for Head of household filers in Oklahoma for 2018. Only the portion of income within each bracket is taxed at the stated rate.
| Bracket | Range | Rate |
|---|---|---|
| 1 | $ 0.00 to $ 2,000.00 | 0.5% |
| 2 | $ 2,000.00 to $ 5,000.00 | 1% |
| 3 | $ 5,000.00 to $ 7,500.00 | 2% |
| 4 | $ 7,500.00 to $ 9,800.00 | 3% |
| 5 | $ 9,800.00 to $ 12,200.00 | 4% |
| 6 | $ 12,200.00 and over | 5% |
Widowed – Progressive Tax Brackets (2018)
Marginal income tax brackets for Widowed filers in Oklahoma for 2018. Only the portion of income within each bracket is taxed at the stated rate.
| Bracket | Range | Rate |
|---|---|---|
| 1 | $ 0.00 to $ 2,000.00 | 0.5% |
| 2 | $ 2,000.00 to $ 5,000.00 | 1% |
| 3 | $ 5,000.00 to $ 7,500.00 | 2% |
| 4 | $ 7,500.00 to $ 9,800.00 | 3% |
| 5 | $ 9,800.00 to $ 12,200.00 | 4% |
| 6 | $ 12,200.00 and over | 5% |
Oklahoma Standard Deduction(2018)
State-level standard deduction amounts for each filing status.
| Filing Status | Amount |
|---|---|
| Single | $6,350 |
| Married filing jointly | $12,700 |
| Married filing separately | $6,350 |
| Head of household | $6,350 |
| Widowed | $12,700 |
Oklahoma Payroll Taxes(2018)
Payroll taxes set at the state level, separate from federal FICA.
| Tax | Rate | Wage Cap |
|---|---|---|
| Unemployment Insurance Tax | 0% | No cap |
Oklahoma Tax Tables for Related Years
These related years are often reviewed together for comparing bracket changes, deductions and Oklahoma updates:
Frequently Asked Questions
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.