Free state income tax calculator for all 50 states. Compare flat-rate vs. graduated state tax, find no-income-tax states, and estimate your state tax liability.
The State Income Tax Calculator estimates your state income tax for all 50 states and Washington D.C. States use either graduated brackets, a flat rate, or no income tax at all. Knowing your state tax rate is essential for comparing the total tax burden across states.
Seven states have no income tax: Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, and Wyoming. New Hampshire taxes only interest and dividends (phased out by 2027). Washington has no traditional income tax but imposes a capital gains tax.
Enter your taxable income and select a state to see your estimated state income tax, effective rate, and how it compares to other states. State income tax structures vary enormously across the country. Seven states have no income tax at all, while others impose flat rates or progressive brackets reaching 13% or more. For remote workers and people considering a relocation, the state tax difference can amount to thousands of dollars annually, making this one of the most important variables in any move decision.
State income taxes vary enormously — from 0% to over 13% in California. This calculator helps you estimate your state tax, compare states for relocation decisions, and understand marginal vs. effective state rates. For anyone considering a move between states, this comparison can reveal annual savings of several thousand dollars, making it one of the highest-impact financial calculations available.
State Tax = Sum of (Income in Each Bracket × Bracket Rate) Flat Tax States: State Tax = Taxable Income × Flat Rate No-Tax States: $0
Result: Estimated CA tax: $5,824 (5.82% effective rate)
California uses graduated brackets from 1% to 13.3%. On $100,000 of taxable income (single), the tax is approximately $5,824, giving an effective rate of 5.82%. This is higher than flat-tax states like Colorado (4.4%) but lower than the top marginal rate suggests.
States fall into three categories: no income tax (7 states), flat tax (roughly 10 states), and graduated/progressive tax (the remaining 33 states plus DC). Each system affects taxpayers differently depending on income level.
The $10,000 SALT cap introduced by the TCJA significantly affects residents of high-tax states. A California resident paying $15,000 in state income tax can only deduct $10,000 on their federal return, effectively increasing their federal tax. This has driven some high earners to relocate to no-tax states.
With remote work, state tax has become more complex. Some states tax income based on where the work is performed, while others (like New York) apply a “convenience of the employer” rule that taxes remote workers as if they were in the office. Check your state's rules carefully.
Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, and Wyoming have no state income tax. New Hampshire taxes only interest and dividends (being phased out by 2027). Washington has no traditional income tax but imposes a 7% capital gains tax on gains over $270,000.
A flat tax state applies a single rate to all taxable income regardless of amount. Examples include Colorado (4.4%), Illinois (4.95%), Indiana (3.05%), Massachusetts (5.0%), Michigan (4.25%), and Pennsylvania (3.07%). Your effective rate equals the marginal rate in these states.
California has the highest top marginal rate at 13.3% on income over $1 million. Hawaii follows at 11%, and New Jersey at 10.75% on income over $1 million. However, these top rates only apply to the highest earners.
Yes, state and local income taxes (or sales taxes) are deductible on your federal return if you itemize. However, the SALT deduction is capped at $10,000 ($5,000 MFS). This cap significantly limits the federal benefit for high-tax state residents.
It depends on the full picture. No-income-tax states may have higher sales taxes, property taxes, or cost of living. For example, Texas has no income tax but property tax rates around 1.6-2.0% are among the nation's highest. Evaluate your total tax burden and quality of life.
No. Each state sets its own brackets, rates, deductions, and exemptions independently from the federal system. Some states use federal AGI as a starting point, while others have completely separate calculations. State standard deductions and personal exemptions also vary widely.