State Tax Calculator
Quick rough state income tax estimate
Educational estimate; real systems vary (brackets, credits, deductions).
How to Use This Calculator
1
Enter taxable income
Provide your state taxable income.
2
Set flat rate
Use a representative state rate for rough planning.
3
Calculate
View the back-of-envelope state tax estimate.
Formula
Tax = Income × Flat Rate
About State Tax Calculator
States use different tax systems (flat or progressive) with various deductions and credits. This simplified tool uses a flat-rate shortcut for quick planning and education. For precise results, consult your state’s department of revenue.
Frequently Asked Questions
Why doesn’t this match my return?
Returns include brackets, credits, and local taxes not modeled here.
Can I model progressive rates?
Use a representative effective rate or one of the state-specific tools.