US Income Tax Calculator 2026

How US income tax actually works

The United States taxes individuals on a progressive schedule: the first slice of your taxable income is taxed at 10%, the next slice at 12%, and so on up to 37%. A common misunderstanding is that moving into a higher bracket taxes all of your income at that higher rate. It does not. Only the dollars inside each band are taxed at that band's rate, which is why your effective rate is always lower than your top bracket.

Federal income tax is only one of three layers. On top of it sit the payroll taxes — Social Security at 6.2% of wages up to an annual wage base, and Medicare at 1.45% with no ceiling — and then state income tax, which ranges from nothing at all in nine states to over 12% at the top in California. Our calculator shows all three so the take-home figure resembles what actually lands in your bank account.

Tax year 2026 brackets and standard deduction

The figures below are the IRS inflation-adjusted amounts for tax year 2026, the year you report on a return filed in early 2027. The standard deduction is $16,100 for single filers and those married filing separately, $32,200 for married couples filing jointly, and $24,150 for heads of household.

Filing status changes everything

Choosing the wrong status is one of the most expensive routine errors on a US return. If you qualify as head of household but file as single, you pay tax on roughly $8,000 more income than you needed to.

• Single — unmarried on the last day of the year with no qualifying dependent.
• Married filing jointly — one return for both spouses, the widest brackets and the largest standard deduction. Also available to a surviving spouse for two years after a spouse's death.
• Married filing separately — narrower brackets and several credits are lost, but it can protect one spouse from the other's tax debts or help with income-driven student loan repayment.
• Head of household — unmarried, paying more than half the cost of a home for a qualifying child or relative. Brackets and the standard deduction sit between single and joint.

Social Security, Medicare and the self-employed

Employees pay 6.2% Social Security on wages up to the annual wage base — $184,500 for 2026 — and 1.45% Medicare on every dollar, with the employer matching both. High earners pay an extra 0.9% Additional Medicare tax on wages above $200,000 single, $250,000 joint and $125,000 married filing separately.

Self-employed people pay both the employee and employer halves, a combined 15.3%, but only on 92.35% of net earnings, and half of the resulting self-employment tax is deductible against income tax. Our calculator applies all three of these adjustments, which is why a $100,000 1099 result differs from a $100,000 W-2 result.

State income tax: nine states with none, and everyone else

Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Wyoming, New Hampshire and Washington do not tax wage income. A growing group — Arizona, Colorado, Georgia, Idaho, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Mississippi, North Carolina, Pennsylvania and Utah — charge a single flat rate. The rest run graduated schedules, with California, New York, New Jersey, Oregon and Minnesota at the higher end.

Two cautions. Our state figures start from your federal adjusted gross income and apply the state standard deduction; they do not model state-specific credits, exemptions or addbacks. And several states allow local income taxes on top: New York City, Yonkers, most Maryland counties, and many Ohio and Pennsylvania municipalities. Treat the state line as a good planning estimate, not a filing figure.

Reducing what you owe, legitimately

• Contribute to a traditional 401(k), 403(b) or IRA — contributions come off taxable income in the year you make them.
• Use an HSA if you have a high-deductible health plan; contributions are deductible, growth is untaxed and qualified medical withdrawals are untaxed.
• Compare itemising against the standard deduction. Mortgage interest, state and local taxes up to the cap, and charitable gifts only help if their total exceeds the standard amount.
• Claim the credits you qualify for. The Child Tax Credit, the Earned Income Tax Credit, the American Opportunity Credit and the Saver's Credit reduce tax dollar for dollar, which is more valuable than a deduction of the same size.
• If you are self-employed, deduct the home office, health insurance premiums and half of your self-employment tax, and consider a SEP-IRA or solo 401(k).

Deadlines and withholding

The individual return is due on 15 April following the tax year, with an automatic six-month extension available to file — but not to pay. Self-employed people and anyone with significant untaxed income generally owe quarterly estimated tax on 15 April, 15 June, 15 September and 15 January.

If your refund is large every year you are lending the government money interest-free; if you owe a large amount you risk an underpayment penalty. Either way, adjust Form W-4 with your employer rather than waiting for next April.

Pakistan and the United States: the overlap

Many of our readers have income in both countries — a salary in Karachi and freelance clients in New York, or a green card and rental property back home. The United States taxes citizens and permanent residents on worldwide income, while Pakistan taxes residents on worldwide income and non-residents on Pakistan-source income. Double taxation is relieved through the foreign tax credit and the Pakistan–US tax treaty, not by ignoring one return.

If that describes you, calculate each side separately — use our Pakistan salary calculator for the local figure and this page for the US figure — and then take professional advice on the credit position before filing. Cross-border returns are one of the few situations where a calculator genuinely is not enough.

Frequently asked questions