State Income Tax Calculator (2026)
Estimate state income tax from taxable income and a state tax rate assumption.
United States Calculator
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Move the sliders or type exact numbers. Results update instantly.
Instant Estimate
Your Results
Estimated State Tax
$4,000
Based on your selected state tax calculator assumptions. Try different sliders to compare scenarios.
Estimated Taxable Income
$80,000
Effective State Tax Rate
4.71%
These are planning estimates, not tax, legal or investment advice. Country rules, lender policies and tax rates can change.
How to Use the State Tax Calculator
Enter your annual taxable income
Input total income earned subject to state taxation.
Set your state tax rate
Enter your state effective or flat rate (0% for TX/FL, ~4.5% for NC/CO, ~6-9% for CA/NY).
Apply state standard deductions
Deduct state personal exemptions or standard deduction allowances.
Formula & Calculation Methodology
State Tax = Taxable Income x State Tax RateThis calculator uses standard United States financial formulas, IRS thresholds, and amortization schedules. All results compute instantly in your browser with zero data stored or transmitted.
Calculation Examples & Scenarios
$90,000 Salary in a Flat-Tax State (e.g., NC 4.5%)
$90,000 income, 4.5% flat state tax rate, $5,000 state deduction.
$120,000 Salary in a Progressive State (e.g., CA ~6.5% Effective)
$120,000 income, progressive state brackets averaging 6.5% effective rate.
Moving to a Zero-Tax State (Texas, Florida, Nevada)
$100,000 salary moving from 6% income tax state to zero-tax state.
Key Benefits
- Directly estimates state tax liability across flat, progressive, and zero-tax states
- Quantifies take-home salary differences when relocating across state borders
- Helps remote workers evaluate state tax obligations when working in multiple states
Common Use Cases
- Relocation budgeting and cost-of-living comparison between US states
- Evaluating remote work job offers with location-adjusted salary structures
- Year-end state income tax planning and withholding adjustment
How State Income Taxes Vary Across the United States
State income taxes in the US fall into three categories: states with no earned income tax (Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, Wyoming), states with a flat tax rate (e.g., Colorado, Illinois, North Carolina, Utah), and states with progressive brackets (e.g., California up to 13.3%, New York up to 10.9%, New Jersey up to 10.75%).
Frequently Asked Questions
Nine US states do not levy a state income tax on earned wages: Alaska, Florida, Nevada, New Hampshire (dividend and interest only), South Dakota, Tennessee, Texas, Washington (capital gains only), and Wyoming.
Progressive states (like California, New York, and New Jersey) tax higher brackets of income at higher percentages. Flat tax states (like Colorado, Illinois, Michigan, and North Carolina) tax all taxable wage income at a single fixed rate.
This calculator models state-level income taxes. Some localities (such as New York City, Philadelphia, and cities in Ohio, Pennsylvania, and Michigan) impose additional municipal income taxes.
Most states provide their own standard deduction or personal exemption that reduces your gross income before state tax rates are applied. Enter your expected state deduction to see your exact taxable base.
Taxpayers who itemize deductions on federal Schedule A can deduct state and local income (or sales) taxes and property taxes up to the federal SALT cap ($10,000 for single or married filing jointly).
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