State Income Tax Calculator
Estimate your state income tax liability with our free calculator. State tax rates and structures vary dramatically—from zero in some states to over 13% in others. Understanding your state's tax system helps with financial planning, especially if you're considering relocation.
State Income Tax Overview (2024)
| Tax Type | States | Top Rate Range |
|---|---|---|
| No Income Tax | AK, FL, NV, SD, TX, WA, WY | 0% |
| No Wage Tax | NH, TN | 0% (only investment income) |
| Flat Rate | CO, IL, IN, KY, MA, MI, NC, NH, PA, UT | 2.5% - 5.25% |
| Progressive | CA, NY, NJ, HI, and 30+ others | Up to 13.3% |
States with Highest and Lowest Taxes
| Highest Tax States | Top Rate | Lowest Tax States | Top Rate |
|---|---|---|---|
| California | 13.3% | Alaska | 0% |
| Hawaii | 11.0% | Florida | 0% |
| New Jersey | 10.75% | Texas | 0% |
| New York | 10.9% | Nevada | 0% |
| Oregon | 9.9% | Washington | 0% |
State Tax Calculator
``javascript
function calculateStateTax(income, state) {
// Example: California progressive brackets
const californiaRates = [
{ max: 10412, rate: 0.01 },
{ max: 24684, rate: 0.02 },
{ max: 38959, rate: 0.04 },
{ max: 54081, rate: 0.06 },
{ max: 68350, rate: 0.08 },
{ max: 349137, rate: 0.093 },
{ max: 418961, rate: 0.103 },
{ max: 698271, rate: 0.113 },
{ max: Infinity, rate: 0.123 }
// Note: additional 1% mental health surcharge over $1M
];
let tax = 0;
let previousMax = 0;
for (const bracket of californiaRates) {
if (income > bracket.max) {
tax += (bracket.max - previousMax) * bracket.rate;
previousMax = bracket.max;
} else {
tax += (income - previousMax) * bracket.rate;
break;
}
}
return { stateTax: tax.toFixed(2), effectiveRate: (tax/income*100).toFixed(2) + '%' };
}
``
Tax Impact of Relocation
Moving from a high-tax state (California, New York) to a no-tax state (Texas, Florida) can save 10%+ of income annually. However, no-tax states often have higher property taxes or sales taxes to compensate. Consider total tax burden, not just income tax.