Calculators
State Income Tax Calculator
Estimate state income tax with a flat rate or graduated brackets you enter, plus any local income tax.
- Runs in your browser
- Nothing uploaded
The tool
Enter your numbers below. Results update as you type, and nothing leaves your browser.
Everything you enter stays on your own machine. Nothing is sent to us or to anyone else, which you can confirm in your browser network tab.
What people use it for
- Comparing take-home pay between states
- Estimating state tax before moving
- Budgeting state estimated payments
- Checking a state withholding amount
About this tool
What the State Income Tax Calculator does
US states tax income in three ways: no income tax at all, a single flat rate, or graduated brackets similar to the federal system. This calculator handles any of them from the rates you enter, and adds a local or city income tax where one applies.
Formula
- State tax = brackets applied to state taxable income − credits
- Local tax = income × local rate
- Effective rate = (state + local) ÷ income
Worked example
Using the starting values in the calculator above:
| Input | Value |
|---|---|
| State taxable income | $75,000 |
| State brackets | 1 entry |
| Local income tax | 0% |
| State tax credits | $0.00 |
| Result | Value |
|---|---|
| State and local income tax | $3,375 |
| Effective rate | 4.50% |
| State income tax | $3,375 |
| Local income tax | $0.00 |
How to read the result
States define taxable income differently, with their own deductions and exemptions, so start from your state’s taxable income rather than federal figures.
Living in one state and working in another can create tax in both, usually with a credit for tax paid to the other state.
Estimates only, not tax advice. Rates and thresholds change; confirm current figures with your tax authority or adviser.
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Questions
Questions about this tool
The things clients actually want to know — costs, timelines, ownership and what happens after launch.
Several states, including Florida, Texas, Nevada and Washington, do not tax wage income. Check current rules, as some tax investment income.
A single rate applied to all taxable income, entered here as one bracket with no upper limit.
Some do, such as New York City and several cities in Ohio and Pennsylvania.
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