About this state tax calculator
US state income tax calculator for state tax, local tax and take-home income estimates
The Free Calculators US State Income Tax Calculator helps users estimate how much state income tax may apply to their annual income. State tax rules vary across the United States. Some states have no broad-based individual income tax, some use flat rates, and others use graduated brackets with deductions, exemptions and credits.
This calculator is built for quick planning, salary comparison and relocation estimates. Users can select a state, enter annual income, apply a simplified deduction amount, add local income tax if applicable, and compare estimated annual tax with monthly tax and take-home income.
Why state income tax varies by state
U.S. state income tax is not controlled by one single national formula. Each state can set its own rates, taxable income rules, deductions, credits, exemptions and filing requirements. Some states use federal taxable income as a starting point, while others have their own adjustments and forms.
This is why a state income tax calculator must be treated as an estimate unless it fully applies the official tax form instructions for a specific state and tax year. This tool uses simplified 2026 preset rates and a custom rate option so users can make fast comparisons without pretending to replace official state filing software.
No state income tax states
Several U.S. states do not levy broad-based individual income tax on wages. These states can still collect other taxes such as sales tax, property tax, excise tax, business tax or special capital gains taxes. For example, Washington does not tax general wage income but has special capital gains tax rules.
A state with no income tax does not automatically mean the lowest total cost of living. Housing, sales tax, property tax, insurance, local taxes and fees can still affect the overall tax burden. This calculator focuses only on income-tax style estimates.
Flat tax states and graduated tax states
Some states use flat income tax rates, meaning the same rate applies broadly to taxable income after deductions or exemptions. Other states use graduated rates, where higher income levels may be taxed at higher marginal rates. A simplified calculator can give a useful estimate, but official tax may differ when bracket thresholds, credits and deductions are applied.
This tool includes a preset rate for each state and a custom rate field. If you know the official state effective rate, bracket result or payroll estimate, enter it in custom mode for a more accurate calculation.
Local income taxes
Some cities, counties or local jurisdictions may impose local income taxes in addition to state tax. These local taxes are not the same everywhere. The calculator includes an optional local tax rate field so users can add local tax where it applies, such as certain city or county income taxes.
Local tax can be especially important for payroll planning because two people with the same state and income can still have different total tax outcomes depending on their city, county, school district or work location.
Important limitation
This calculator is not an official state tax filing tool. It does not calculate every state bracket, credit, exemption, retirement income rule, capital gains rule, part-year resident adjustment, nonresident allocation, reciprocal state agreement, local wage tax, itemized deduction adjustment or state-specific addback.
For official filing, refund estimates, nonresident returns, multi-state income, business income, capital gains or complex deductions, users should verify with the relevant state tax agency, payroll department or qualified tax professional.
Why Free Calculators is useful for U.S. tax tools
Free Calculators is designed to provide practical online calculators for tax, salary, finance and planning. A US state income tax calculator is useful because state tax can affect job offers, relocation decisions, take-home pay and annual tax planning.
This page includes SEO metadata, structured data, FAQ schema, responsive calculator design and detailed explanatory content. The same structure can be reused for federal income tax calculator, paycheck calculator, sales tax calculator, property tax calculator and cost-of-living calculators.