State Income Tax Calculator (USA, 2024)
Estimate your 2024 state income tax for all 50 US states and Washington D.C. Enter your taxable income (after federal deductions), choose your state, and get the estimated tax, effective rate, marginal rate, and after-tax income. Rates are editable 2024 estimates — verify before filing.
State
USD
2024 estimate for the selected state — single filer
4.69 %
effective rateState tax
4.7%
After-tax income
95.3%
How does this calculator work?
Enter taxable income and select your state to see your 2024 estimated state income tax, effective rate, and after-tax income. Nine states collect nothing on wages; flat-rate and graduated-bracket states are all covered. Rates are 2024 estimates — verify before filing.
Formula
How this is calculated
US state income taxes fall into three structures. Nine states (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming) levy no tax on wage income. Eleven states use a flat rate applied to all taxable income. The remaining 31 states and D.C. use graduated brackets — each bracket's rate applies only to the income within that range, not to the full income.
This calculator applies the marginal bracket method: income from $0 to the first threshold is taxed at the lowest rate; each additional slice is taxed at the rate for its bracket. The effective rate is the total tax divided by total income and is always lower than the top marginal rate for graduated states.
Rates shown are 2024 estimates for a single filer on taxable income (income after standard or itemised deductions). Married-filing-jointly brackets typically have thresholds at double the single-filer amounts, though the exact ratio varies by state. Local income taxes (New York City, Detroit, etc.) are not included. Some states (such as New Hampshire) tax dividend and interest income at a different rate from wages — this calculator applies the wage-income schedule.
Always confirm current year rates at your state revenue department's website before filing.
Frequently asked questions
The marginal rate is the rate you pay on your last (highest) dollar of income. The effective rate is your total tax divided by your total income — it is always lower because lower dollars are taxed at lower bracket rates. For example, a Californian earning $75 000 has a marginal rate of 9.3 % but pays an effective state rate of about 5 %.
No — only state-level income tax is calculated. Several cities and counties impose their own taxes: New York City adds up to 3.876 %, Detroit 2.4 %, Philadelphia 3.75 % (residents), and so on. Add your local rate separately.
Taxable income is gross income minus deductions. For state taxes you generally start with your federal adjusted gross income (AGI), then apply any state-specific additions or subtractions (e.g., state pension exemptions, bonus depreciation differences). Many states also offer a state standard deduction. Enter the result of those adjustments in the income field.
Also known as
TG we-Calculate Editorial Team. (2026). State Income Tax Calculator (USA, 2024) [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/state-tax-calculator
TG we-Calculate Editorial Team. "State Income Tax Calculator (USA, 2024)." TG we-Calculate. 2026. https://we-calculate.com/calculator/state-tax-calculator.
TG we-Calculate Editorial Team, "State Income Tax Calculator (USA, 2024)," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/state-tax-calculator
@misc{wecalculate_state_tax_calculator, title = {State Income Tax Calculator (USA, 2024)}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/state-tax-calculator}}, year = {2026}, note = {TG we-Calculate} }
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