US State Income Tax Calculator
Estimate your state income tax liability quickly for any US state based on your filing status and income.
How to Use This Calculator
Enter your annual income, select your state and filing status. The calculator will estimate state income tax liability using average state tax brackets and rates for 2026.
- Enter annual gross income in USD.
- Select your state from the dropdown.
- Select filing status: Single, Married, Head of Household.
- Click Calculate State Tax to see tax liability.
- Use this calculator for planning estimated payments or budgeting.
State Income Tax Calculator
US State Income Tax Guide
State income tax is imposed by individual US states on residents’ taxable income. Rates vary widely by state and filing status. Some states have progressive rates (e.g., California), while others have flat rates (e.g., Illinois), and some states have no income tax (e.g., Texas, Florida). This calculator estimates state tax based on income, state, and filing status for 2026.
State Tax Calculation Rules
- Taxable income is based on total income minus state-allowed deductions.
- Progressive rates apply in most states; flat rates in a few.
- Filing status determines tax brackets and exemptions.
- Use this calculator to compare tax liabilities across states.
- State taxes are separate from federal income tax.
Tips for Accurate Estimation
- Know your state’s tax rates and rules.
- Include deductions and exemptions specific to the state.
- Estimate quarterly payments if self-employed.
- Use calculator before filing state returns.
- Check local taxes if applicable.
FAQs
Do all states have income tax?
No, some states like Texas, Florida, and Washington have no state income tax. Rates vary by state and filing status.
How is state tax calculated?
State tax is based on taxable income, applicable brackets, and deductions allowed by the state. Filing status affects exemptions and rates.
Can this calculator estimate taxes for any state?
Yes, it provides estimates for major states. For exact rates, integrate with state tax API or consult state revenue department.
This US State Income Tax Calculator helps residents and businesses plan for state tax obligations, compare liabilities across states, and ensure compliance with state tax laws.