Which US states have no income tax in 2025?+
Nine states have no income tax on wages: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. New Hampshire phased out its tax on interest and dividends in 2025, making it fully income-tax-free. Washington has a 7% capital gains tax on long-term gains above $270,000 but taxes no wages. These states fund government through sales taxes, property taxes, severance taxes, and other revenue sources.
What is the highest state income tax rate in the US?+
California has the highest top marginal state income tax rate at 13.3% on taxable income over $1 million for single filers. Hawaii is second at 11% on income over $300,000. New Jersey reaches 10.75% above $1 million. District of Columbia tops out at 10.75% above $1 million. Oregon reaches 9.9% above $125,000, making it the highest practical rate for upper-middle-income earners.
How much state tax do I pay on a $100,000 salary?+
On $100,000 single filing, approximate 2025 state taxes include: California $6,601, New York $6,073, New Jersey $5,525, Oregon $7,463, Minnesota $6,418, Illinois $4,950 (flat), Pennsylvania $3,070 (flat), North Carolina $4,500 (flat), Colorado $4,400 (flat), Texas $0, Florida $0. The spread from $0 to $7,463 shows how dramatically state choice affects take-home pay.
What is the difference between flat and progressive state income tax?+
A flat-rate state applies one percentage to all taxable income regardless of amount. Illinois at 4.95% taxes $30,000 and $300,000 at the same rate. A progressive state applies increasing rates to higher portions of income. California's first $10,756 is taxed at 1%, then the next tier at 2%, and so on up to 13.3%. Progressive systems collect proportionally more from high earners. Flat systems are simpler to compute and more predictable.
Can I deduct state income taxes on my federal return?+
Yes, if you itemize deductions on your federal return. However, the SALT deduction cap limits the combined deduction for state income tax (or sales tax) plus property taxes to $10,000 per year ($5,000 for married filing separately). This cap, introduced by the Tax Cuts and Jobs Act of 2017, significantly reduces the federal tax benefit for residents of high-tax states like California, New York, New Jersey, and Illinois.
Is the state tax calculator accurate for my actual tax return?+
This calculator provides a close estimate for planning purposes. Your actual state tax liability may differ because: (1) most states have their own standard deductions or exemptions applied before computing tax; (2) you may have deductions for retirement contributions, business expenses, or other adjustments; (3) states offer various credits (child tax credit, earned income credit, education credits) that reduce final tax owed; and (4) investment income, self-employment income, and other income types may be taxed differently. Use it for comparison and budgeting, not for filing.
How does filing status affect state income tax?+
In progressive states, Married Filing Jointly typically uses wider bracket thresholds that reduce the marginal rate on combined household income. For example, Minnesota's 5.35% bracket covers income up to $32,080 single but up to $46,890 for married filers. Flat-rate states apply the same percentage regardless of filing status. Head of Household status generally falls between single and married thresholds and benefits single parents with dependents.
What states have recently lowered their income tax rates?+
Major rate cuts since 2022 include: Arizona moved to a 2.5% flat rate in 2023 from a previous top rate of 4.5%; Iowa adopted a 3.8% flat rate in 2025, down from 8.53% progressive brackets; Louisiana moved to a 3% flat rate in 2025 from rates as high as 6%; Montana moved to a 5.9% flat rate in 2024; North Dakota simplified to 1.1% in 2024; Georgia reduced its flat rate to 5.49% in 2024 with further reductions planned. This trend reflects competition to attract businesses and high-income residents.
Does moving to a lower-tax state really save money after all costs?+
The net savings depend on your full financial picture. Moving from California to Texas on a $150,000 salary saves roughly $10,000 per year in state income tax. However, Texas has higher property taxes (averaging 1.7% vs California's Prop 13-limited rates often below 1%), and if you sell a California home you may owe California exit taxes on accrued gains. For renters or new homebuyers, the state tax savings are usually clear. Factor in cost of living, housing costs, healthcare access, and career opportunities for a complete picture.
What is the state income tax in Washington DC?+
Washington DC (the District of Columbia) has a progressive income tax with seven brackets ranging from 4% on income up to $10,000 to 10.75% on income over $1 million for 2025. On $75,000 single, DC tax is approximately $4,175 (effective rate 5.57%). On $200,000 single, DC tax is approximately $14,075 (effective rate 7.04%). DC residents pay no state taxes to Maryland or Virginia but do pay a "DC state" tax to the local government.
How do I calculate my marginal vs effective state tax rate?+
Your marginal rate is simply the top bracket rate your income falls into. Your effective rate is total state tax divided by total gross income, expressed as a percentage. For a California single filer earning $75,000: marginal rate is 9.3% (the bracket covering $70,606 to $360,659); effective rate is approximately 4.7% ($3,517 / $75,000). The effective rate is the figure that matters for comparing your real tax burden across states.