State Income Tax Calculator
Estimate state income tax for all 50 states + DC with brackets or flat rates.
California income tax
$4,092.85
Progressive brackets · 5.12% effective
Federal tax (est.)
$12,653.00
Combined fed + state
$16,745.85
Combined effective rate
20.93%
Take-home
$63,254.15
- Take-home79%
- Federal tax16%
- State tax5%
Of $80,000.00 taxable income you keep $63,254.15 after $12,653.00 federal and $4,092.85 California state tax.
GKCalculators
California state tax — bracket breakdown
| Income band | Rate | Tax |
|---|---|---|
| $0.00–$10,412.00 | 1% | $104.12 |
| $10,412.00–$24,684.00 | 2% | $285.44 |
| $24,684.00–$38,959.00 | 4% | $571.00 |
| $38,959.00–$54,081.00 | 6% | $907.32 |
| $54,081.00–$68,350.00 | 8% | $1,141.52 |
| $68,350.00–$349,137.00 | 9.3% | $1,083.45 |
Single filer · 2024 estimate. Federal tax shown separately in the stats above.
AI Breakdown & Smart Takeaway
Plain-English insight on your numbers
Get a personalized explanation of what these results mean — and how to improve them.
How the State Income Tax Calculator works
This State Income Tax Calculator helps individuals and households estimate their state-level income tax liability across all 50 U.S. states and Washington D.C., using each jurisdiction's current tax brackets or flat rates. Whether you're comparing job offers in different states, planning a move, or simply verifying your withholding, this tool gives you a fast, state-specific estimate based on your gross income and filing status.
The calculator works by first identifying the tax structure of your selected state — either a graduated bracket system or a flat rate — and then applying that structure to your taxable income. In states like California and New York, income is taxed at progressively higher rates as it crosses defined thresholds, meaning only the portion of income within each bracket is taxed at that bracket's rate, not your entire income. States like Colorado and Illinois use a flat rate, meaning every dollar of taxable income faces the same percentage regardless of how much you earn. A handful of states — including Texas, Florida, and Nevada — levy no state income tax at all, making them particularly attractive for high earners considering relocation.
A critical concept the calculator accounts for is filing status. Most graduated-bracket states publish separate bracket thresholds for single filers, married filing jointly, married filing separately, and head of household. Choosing the wrong filing status can meaningfully skew your estimate. For example, in New York, the bracket thresholds for married couples filing jointly are significantly wider than for single filers, which can reduce the effective rate on the same gross income. The calculator applies the correct bracket table for your chosen status to ensure accuracy. Standard deductions at the state level also vary widely — some states conform to federal standard deduction amounts, others set their own, and a few have none at all, so your taxable income at the state level may differ from your federal taxable income.
The formula the calculator uses for bracket states is additive: it computes tax on each income tier separately and sums the results. For instance, if your state has three brackets at 2%, 4%, and 6%, the tax on income in the first tier is calculated at 2%, the income in the second tier at 4%, and so on, with the totals added together. This is how marginal tax rates work in practice, and it's a common misconception that earning more money moves all of your income into a higher bracket. The calculator then divides total state tax by gross income to display your effective (average) state tax rate alongside the marginal rate, giving you a complete picture of your actual burden rather than just the top rate you face.
A common mistake users make is ignoring local income taxes, which are levied on top of state taxes in cities like New York City, Philadelphia, and Columbus. While this calculator focuses on state-level tax, residents of high-tax cities should be aware that their true income tax burden is state tax plus local tax combined. Another frequent error is using gross wages without accounting for pre-tax deductions — contributions to a 401(k), HSA, or FSA reduce your federally adjusted gross income, which many states use as their starting point for calculating taxable income. Entering your income after these deductions will produce a more accurate state tax estimate and may reveal that your effective state rate is lower than you assumed.
Formula
Progressive states: sum of income in each bracket × its rate. Flat states: income × rate. Federal uses 2024 IRS brackets.
Pro tips
- Enter your TAXABLE income (after deductions) for the closest estimate — the same figure feeds both the state and federal calculation.
- Nine states — AK, FL, NV, NH, SD, TN, TX, WA, WY — have no state income tax on wages.
Key terms
- Marginal Tax Rate
- — The tax rate applied to the last (highest) dollar of your income, which is the rate of the bracket your income reaches but does not apply to income below that bracket's threshold.
- Effective Tax Rate
- — The actual average percentage of your total income paid in taxes, calculated by dividing total tax owed by gross income — always lower than your marginal rate in a graduated system.
- Tax Bracket
- — A defined income range within a graduated state tax system that is taxed at a specific rate, with different rates applying to successive ranges of income.
- Flat Tax
- — A state income tax structure where a single, uniform rate applies to all taxable income regardless of the amount earned, as used in states like Illinois and Colorado.
- Filing Status
- — A classification (single, married filing jointly, married filing separately, or head of household) that determines which set of tax brackets and standard deductions apply to a taxpayer.
- State Standard Deduction
- — An amount set by each state that taxpayers can subtract from gross income before calculating state taxable income, which varies by state and is separate from the federal standard deduction.
