Whether you owe state taxes comes down to three questions: Do you live in a state that taxes income? Did you earn money in any other state that does? And is your income high enough to cross that state’s filing threshold? If you live and work entirely in a state with no income tax, and you earned nothing in a taxing state, you generally owe nothing. Everyone else needs to work through the rules below.
The Eight States That Don’t Tax Wages
Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, and Wyoming impose no personal income tax on wages or salaries. Washington has no broad income tax either, but it does tax long-term capital gains above a set threshold at tiered rates starting at 7%.1The White House. The Economic Impact of State Income Tax Elimination
Living in one of these states doesn’t insulate you from every state’s tax system. Earn money in a state that does tax income — through work performed there, a rental property, or business activity — and that state can still tax those specific earnings through a non-resident return.
When Your Home State Can Tax You
If your state has an income tax, the first question is whether you count as a resident. States use two tests, and meeting either one is enough.
The first is domicile. Your domicile is the state you treat as your permanent home, the one you intend to return to when you’re away. Voter registration, driver’s license, where your family lives, and where you keep your most valuable belongings all point to domicile.
The second is statutory residency. Most states with an income tax treat you as a resident if you keep a permanent home in the state and spend more than 183 days there during the calendar year. A few states use 184 or 185 days, and a couple set the bar at 200. Any part of a day spent in the state typically counts as a full day.
Meet either test and the state generally taxes all your income, wherever it was earned. Move into or out of a state mid-year and you’re a part-year resident, taxed only on income earned while you lived there, usually on a prorated basis.
When Another State Can Tax You
Even if you’re not a resident, a state can tax income you earned inside its borders. These are source income rules, and the most common trigger is physical work performed in the state. Travel out of state for a job and the wages tied to those workdays can be taxed by the state where you worked. Business profits, rental income from real estate located in the state, and gains from selling property there are also taxable at the source.
The legal concept behind this is nexus — the connection between you and the taxing state. Once nexus exists, the state can require you to file a non-resident return covering the income you earned there. Professional athletes and touring performers handle this constantly, owing a slice of pay to every state they work in.
Remote Work and the Convenience Rule
Remote work has scrambled state tax liability for a lot of people. The general rule is that wages are taxed where the work is physically performed. Work from home in State A for an employer in State B, and State A has the stronger claim.
A handful of states flip that outcome with a “convenience of the employer” rule. Under it, if your employer has an office available for you and you choose to work remotely from another state, your wages get taxed as if you were sitting at that office. States enforcing some version include New York, Connecticut, Delaware, Nebraska, Oregon, and Pennsylvania. New Jersey applies the rule reciprocally against residents of states that impose a similar test.2State of NJ – Department of the Treasury – Division of Taxation. Convenience of the Employer Sourcing Rule Enacted for Gross Income Tax FAQ If your remote arrangement exists because the employer requires it — say, no office in your region — the rule generally does not apply.
Many states also set day-count safe harbors before non-resident withholding kicks in. Travel to another state for work fewer than a set number of days a year and that state may not require withholding. Thresholds range from as few as 14 days in some states to 60 in others. Cross the line and you likely owe a non-resident return there.
Cross-Border Commuters and Reciprocity
Some neighboring states have reciprocity agreements that keep things simple for people who commute across a state line. Under a reciprocity agreement, you pay tax only to your home state, even if you physically work next door. These are common around metro areas that straddle state lines, including the Washington, D.C. area, the Kansas City metro, and parts of the upper Midwest.
To use the agreement you usually have to file an exemption certificate with your employer. Without it, your employer is legally required to withhold for the state where you physically work, and you’d have to file a non-resident return there to claw the money back. Reciprocity covers wages and salaries only. Rental income, capital gains, and other income types still follow the ordinary source rules. Agreements can also be changed or ended by either state’s legislature, so confirm yours is still active at the start of each tax year.
Paying Two States on the Same Income
When two states both have a claim on the same income, most states offer a resident tax credit to prevent full double taxation. Live in State A, earn income in State B, and pay non-resident tax to State B: State A then reduces your tax bill by what you already paid — up to a cap.
The cap matters. Your home state’s credit is generally limited to the lesser of the tax you actually paid to the other state or the amount your home state would have charged on that same income. If the non-resident state’s rate is higher, the credit wipes out your home-state liability on that income but you still pay the extra to the non-resident state. Your effective rate on that income ends up being whichever state’s rate is higher.
To claim the credit you generally file the non-resident return first, then file at home and attach proof of what you paid elsewhere. Forms and procedures vary, but the mechanic is the same in nearly every income-tax state.
Income Below the Filing Threshold
You can be a resident of a taxing state and still owe nothing if your income falls below the state’s filing threshold. Every state sets its own minimum, and they vary widely. Some require a return from anyone with any income at all; others set the bar in the low thousands of dollars.
Many states tie the threshold to the federal standard deduction or use it as a starting point. The federal standard deduction for tax year 2025 (the return you file in 2026) is $15,750 for single filers and $31,500 for married couples filing jointly.3Internal Revenue Service. Check if You Need to File a Tax Return For tax year 2026, it rises to $16,100 single and $32,200 married filing jointly.4Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Your state’s number may be higher, lower, or the same.
Many states also require a return whenever you were required to file federally, regardless of your state-level income. And if your employer withheld state tax during the year, file anyway — that’s the only way to get a refund.
Active-Duty Military and Spouses
Active-duty service members get a federal carve-out under the Servicemembers Civil Relief Act. Military pay is taxed only by the state where the service member is legally domiciled, not by the state where they’re currently stationed.5Office of the Law Revision Counsel. 50 USC 4001 – Residence for Tax Purposes A soldier stationed in Virginia who keeps legal domicile in Texas owes no state income tax on military pay because Texas has none.
Spouses are also protected. A military spouse doesn’t lose or gain a state domicile just because they moved to a new duty station. The service member and spouse may elect the domicile of either spouse or the permanent duty station for tax purposes.5Office of the Law Revision Counsel. 50 USC 4001 – Residence for Tax Purposes Non-military income, like wages from a civilian job in the stationed state, can still be taxed by that state.
What It Costs to Skip a Return
Failing to file a required state return or pay what you owe triggers penalties and interest that build quickly. Most states follow a structure similar to the federal one, which charges 5% of unpaid tax for each month or partial month a return is late, capped at 25%.6Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax Some states add smaller flat-dollar penalties on top.
Interest on unpaid balances runs from the original due date. Annual rates states charge on unpaid tax typically fall between 7% and 11%, depending on the state and current conditions, and they’re often tied to the federal short-term rate plus a fixed margin.
If a state finds that you deliberately understated income or refused to file, the consequences escalate to fraud penalties well above ordinary late-filing charges, and in extreme cases criminal prosecution. Honest mistakes — miscounting days in a state, missing a non-resident filing requirement — still produce back taxes plus interest. Fixing the error early keeps the cost down.
How to Check What You Actually Owe
Most state revenue agencies run an online portal that shows your account. Setting one up usually requires identity verification with your Social Security number, a recent tax return, and sometimes a state ID. Once you’re in, you can see outstanding balances, credits applied, and payment history.
These portals also post official notices, including assessments for additional tax the state believes you owe and discrepancies it found in your return. Reading them online beats waiting weeks for mail. Most portals let you pay by electronic funds transfer or card, and many offer installment plans for larger balances.