State Income Tax Calculator

State income tax is the variable that surprises most people when they relocate or work remotely. A $150,000 salary in California costs $12,870 in state income tax. The same salary in Texas costs $0. That $12,870 difference is not a minor rounding error -- it is nearly a car payment per month. According to the Tax Foundation's 2026 State Tax Competitiveness Index, the spread between high-tax and no-tax states has widened over the past decade as remote work decouples income from employer location. Yet state income tax rules are more complex than people assume: nine states have no wage income tax, thirteen use flat rates, and twenty-nine use graduated brackets -- each with different standard deductions, personal exemptions, and income definitions. This calculator covers all 50 states and D.C. using 2026 projected rates, showing your effective rate, marginal rate, and bracket-by-bracket breakdown.

This state income tax calculator computes income tax liability for all 50 states and Washington D.C. using 2026 projected brackets, flat rates, and standard deductions. It covers nine no-income-tax states, thirteen flat-rate states, and twenty-nine progressive bracket states. Enter your gross income, select your state, and choose filing status to get: taxable income after state standard deduction, bracket-by-bracket tax breakdown, effective tax rate, marginal tax rate, and annual and monthly tax amounts.