US State Income Tax: Rates, No-Tax States & Residency (2025)

Accounting › Country Tax Guides › US Tax

US state income tax adds a major second layer to the federal system, varying enormously by location. This guide explains which states have no income tax, the difference between flat and progressive state taxes, how residency and multi-state income work, and why state tax is an important factor in where Americans choose to live and work.

How does state income tax work?

Most states impose their own income tax on top of federal tax, with their own rates, brackets, deductions and rules. State income tax is generally based on your federal taxable income with state-specific adjustments, then taxed at the state’s rates. You file a state return alongside your federal one, and the two are separate calculations that together make up your total income tax.

State tax can be substantial — high-tax states add several percentage points to your marginal rate, while no-income-tax states add nothing. This means your total tax burden depends heavily on where you live. Understanding your state’s system is essential to knowing your real after-tax income, since the federal brackets alone tell only part of the story.

Which states have no income tax?

Nine states levy no tax on earned income: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington and Wyoming. These states fund themselves through other means — sales taxes, property taxes, tourism, or resource revenue. Note that Washington taxes certain high-income capital gains, and some of these states have other taxes that offset the lack of income tax.

The absence of state income tax makes these states attractive to high earners and retirees, who can save significantly compared with high-tax states. However, no income tax doesn’t always mean lower overall taxes — these states often have higher sales or property taxes. Evaluating the full tax picture, not just income tax, is important when comparing states or considering a move.

What is the difference between flat and progressive state taxes?

States that do tax income use either a flat rate — a single percentage on all taxable income — or progressive brackets, like the federal system, with rates rising as income increases. Flat-tax states apply the same rate to everyone, while progressive states tax higher incomes at higher rates. The structure affects how the tax burden falls across income levels.

Flat-rate states are simpler and can favor higher earners, while progressive states place more burden on top incomes. Rates also vary widely — some states have modest top rates, others quite high ones. Knowing whether your state is flat or progressive, and at what rates, helps you understand your marginal state tax and how it stacks on top of the federal brackets.

How does residency determine state tax?

Your state of residence — your domicile, generally where you have your permanent home — determines which state taxes your income. Residents are typically taxed on all their income; non-residents are taxed only on income earned in that state. Establishing or changing residency for tax purposes involves factors like where you live, vote, register vehicles, and spend your time.

This matters greatly for people who move, especially from high-tax to no-tax states, as high-tax states may scrutinize attempts to change residency. Simply owning a home in a no-tax state isn’t enough; you must genuinely establish domicile there. Understanding residency rules is essential for anyone relocating for tax reasons or splitting time between states, to ensure the move achieves the intended tax result.

How is multi-state income taxed?

People who earn income in more than one state — working across state lines, owning property elsewhere, or moving mid-year — may owe tax in multiple states. Generally, the state where income is earned can tax it, and your resident state taxes your worldwide income but offers a credit for taxes paid to other states, preventing full double taxation.

Remote work has made multi-state taxation more common and complex, as your location when working can determine which state taxes your wages. Some states have agreements simplifying this for cross-border commuters. For anyone with income spanning states, understanding which states can tax what — and how the resident-state credit works — is key to filing correctly and avoiding double taxation.

A practical example: the cost of state tax

Consider someone earning $150,000. In a no-income-tax state like Texas, they pay $0 in state income tax. In a high-tax state, they might pay several percent — potentially $8,000-$13,000 or more — on top of their federal tax. Over a career, this difference amounts to a substantial sum, which is why state tax features heavily in relocation decisions.

However, the no-tax state might have higher property or sales taxes that offset some of the saving. The example shows why state income tax is a major component of the total tax burden and why comparing states requires looking at the whole picture. For high earners especially, the state choice can rival federal planning in its impact on after-tax income.

How do local income taxes work?

Beyond state income tax, some cities and localities impose their own income taxes — notably New York City, and various municipalities in states like Ohio and Pennsylvania. These local taxes stack on top of federal and state taxes, adding another layer for residents and sometimes workers in those jurisdictions. They vary widely and are easy to overlook when estimating total tax.

For residents of cities with local income tax, the combined federal, state and local burden can be considerable. Someone comparing locations should factor in local taxes, not just state ones, since two cities in the same state can differ. Understanding the full stack — federal, state and local — gives the true picture of income tax, which matters for budgeting and relocation decisions alike.

How does state tax treat retirement income?

States vary widely in taxing retirement income. Some exempt Social Security benefits, pensions, or retirement account withdrawals; others tax them. The no-income-tax states naturally don’t tax any of it. This makes state tax treatment of retirement income a major consideration for retirees choosing where to live, as it can significantly affect their after-tax retirement income.

A retiree with substantial pension and retirement-account income might pay much less in a state that exempts such income or has no income tax. This is why retirement destinations are often chosen partly for their tax friendliness to retirees. Understanding how a state taxes Social Security, pensions and withdrawals is essential for retirement planning and for comparing potential places to retire.

How does remote work affect state taxes?

Remote work has complicated state taxation. Where you physically work can determine which state taxes your wages, and some states tax income earned by remote workers tied to an in-state employer under ‘convenience of the employer’ rules. Living in one state and working remotely for an employer in another can create filing obligations or even double taxation issues to resolve via credits.

The rise of remote work means more people face multi-state tax questions than before. Someone who moves to a no-tax state but works remotely for a company elsewhere must understand both states’ rules. These situations can be complex, and getting them wrong risks penalties or overpayment. For remote workers, understanding how their work location and employer’s state interact is increasingly essential.

Why state tax matters for financial planning

State income tax is a major, often underappreciated, component of total tax that can rival federal planning in its impact. For high earners, the difference between a high-tax and no-tax state can be tens of thousands of dollars annually, affecting decisions about where to live, work and retire. It also interacts with capital gains, retirement income and business structure.

Because state tax is so location-dependent and varies enormously, factoring it into major life and financial decisions — relocation, retirement, business location — is worthwhile. The full picture requires combining federal, state and local taxes, plus considering sales and property taxes. Understanding state income tax is therefore an essential part of comprehensive tax and financial planning for individuals and businesses alike.

Common state tax mistakes to avoid

Frequent state tax errors include assuming a no-income-tax state means lower overall taxes (ignoring sales and property taxes), failing to properly establish residency after a move, overlooking multi-state filing obligations from remote work or property, missing local income taxes, and not claiming the resident-state credit for taxes paid elsewhere. Each can cost money or create compliance gaps.

Avoiding them means evaluating the full tax picture when comparing states, genuinely establishing domicile when relocating, filing in every state where you have obligations, accounting for local taxes, and claiming credits to prevent double taxation. State tax is complex and location-specific, so for significant moves or multi-state situations, professional advice ensures you get both the planning and the compliance right.

How do property taxes fit the state tax picture?

Property tax, levied by local governments on real estate, is another major state-and-local tax that varies widely. States with no income tax often have higher property taxes to compensate, and property tax can be a substantial annual cost for homeowners. When comparing the total tax burden across states, property tax belongs in the calculation alongside income and sales taxes.

For homeowners, property tax can rival or exceed state income tax in dollar terms, especially in high-property-tax areas. This is why no-income-tax states aren’t automatically low-tax overall. A complete comparison of states’ tax burdens considers income, sales and property taxes together, giving the true cost of living somewhere — essential context for relocation and financial planning decisions.

Why the full state-and-local picture matters

State income tax is just one part of a state’s overall tax burden, which also includes sales tax, property tax, and local taxes. A state with no income tax may have high sales or property taxes, while a high-income-tax state might have lower property taxes. Only by combining all these does a true comparison of states emerge, which is what matters for real decisions.

For anyone weighing where to live, retire or locate a business, the complete state-and-local tax picture — income, sales, property and local — determines the actual cost. Focusing on income tax alone can mislead. Understanding how these taxes combine in different states equips you to make informed decisions and reveals that the headline ‘no income tax’ label tells only part of the story.

Frequently Asked Questions