In most states, yes — you have to file state taxes even if you don’t owe. The filing requirement is triggered by how much you earned, where you lived, and where you worked, not by whether a check needs to go with the return. If your income crosses the state’s filing threshold, or you were a resident, part-year resident, or nonresident who earned money there, a return is generally required even when withholding already covered your tax or your final balance is zero.
A handful of states take the question off the table. Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming don’t levy a traditional individual income tax on wages and salaries.1Tax Foundation. Nonresident Income Tax Filing and Withholding Laws by State If you live and work in one of them, there’s no state return to worry about. Washington still taxes certain high-value capital gains, and New Hampshire historically taxed interest and dividends before phasing that tax out, so a narrow filing obligation can survive in those two states. Everywhere else, the rules below apply.
Income Alone Can Require a Return
Every state with an income tax sets a minimum income level that triggers a filing requirement. Cross that line and you owe the state a return, whether or not you owe the state any money. The threshold usually depends on your filing status, age, and dependents, and many states peg it to their own standard deduction and personal exemption amounts.
Those state figures are not the federal figures. The federal standard deduction for a single filer in 2026 is $16,100, and $32,200 for married couples filing jointly.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Several state thresholds sit well below those numbers, so it’s entirely possible to be exempt from filing federally and still be required to file with your state.
Here’s where people slip up. Say you earned $15,000 as a single filer, your employer withheld state tax all year, and your final liability comes out to zero. If your state’s filing threshold is below $15,000 — and many are — you still have to file. “I don’t owe anything” isn’t a defense. The obligation to file and the obligation to pay are two separate things.
Dependents
If someone else can claim you as a dependent, your filing threshold is usually lower than the standard amount, sometimes much lower. States commonly set separate thresholds for earned versus unearned income. A teenager with a summer paycheck and a small brokerage account can hit the unearned-income threshold at a few hundred dollars. Parents often assume a dependent’s small income doesn’t matter; the dependent table in your state’s instructions is where to check.
Retirees
Retirement income is a patchwork. Some states exempt Social Security entirely; others tax it above certain adjusted gross income levels. If Social Security is your only income and your state exempts it, you may fall below the filing threshold. Add a pension, an IRA withdrawal, or investment income, and those amounts count toward gross income and can push you over. Some states also raise the filing threshold for older taxpayers, so an age-based bump is worth looking for.
Where You Lived and Worked Can Require a Return
Residency creates its own filing trigger, independent of the income threshold. States sort taxpayers into three buckets.
Full-year residents. If you lived in a state all year, that state generally wants you to report every dollar of income from every source, including wages earned elsewhere, out-of-state rental income, and investment gains. To keep you from being taxed twice on the same money, your home state typically gives a credit for taxes paid to another state. The reporting obligation exists whether or not any tax is ultimately owed after that credit runs.
Nonresidents. If you didn’t live in a state but earned income there — traveled in for a client meeting, did consulting work, collected rent on property you own — that state can require a nonresident return on the income sourced within its borders. Thresholds vary widely, and in a number of states even minimal activity can trigger the requirement.1Tax Foundation. Nonresident Income Tax Filing and Withholding Laws by State
Part-year residents. If you moved during the year, expect to file in both states. Each one wants a return covering the months you lived there, plus any income sourced to that state during the rest of the year. This is one of the most common situations where a required filing gets skipped, because people focus on the new state and forget the old one is still waiting.
Two boundary points worth flagging. About 16 states have reciprocity agreements that let residents of a partner state avoid filing where they work, but only if the right exemption form is on file with the employer.3Tax Foundation. State Reciprocity Agreements: Income Taxes And active-duty service members and their spouses have federal protections under the Servicemembers Civil Relief Act and related laws that can shield military pay and a spouse’s wages from the duty-station state’s income tax.4Office of the Law Revision Counsel. United States Code Title 50 – 4001
When You Should File Even Though You Don’t Have To
Sometimes you’re clearly below the filing threshold, clearly owe nothing, and still lose money by not filing. Two situations account for most of it.
Getting Back Over-Withheld Tax
If your employer withheld more state tax than you actually owe — common when you start a job mid-year, claim fewer allowances than you’re entitled to, or simply earn less than expected — the only way to get that money back is to file a return. The state will not send a check on its own. Box 17 of your W-2 shows the state tax withheld, and your return is the formal request to have the overpayment refunded.
Claiming Refundable Credits
Refundable credits can pay you cash beyond zeroing out your tax bill. The most common is the state Earned Income Tax Credit, offered by roughly 30 states and the District of Columbia, typically calculated as a percentage of the federal EITC. If your state’s version is refundable and you qualify, the credit gets paid to you even when your tax liability is already zero, but only if you file. Some states also have refundable credits for child care, property tax paid by renters, or low-income households. Every one of them requires a filed return to trigger payment.
The Clock on Your Refund
You don’t have forever. Most states follow a statute of limitations similar to the federal rule: generally three years from the return’s due date, or two years from the date the tax was paid, whichever is later. Miss the window and the state keeps the money. For a 2025 tax year return due in April 2026, the refund claim in most states expires around April 2029.
What Happens If You Skip a Required Return
The consequences of not filing depend heavily on whether you owe. The federal failure-to-file penalty runs 5 percent of the unpaid tax per month, up to 25 percent.5Internal Revenue Service. Failure to File Penalty Most states follow a similar structure. When the actual liability is zero, five percent of zero is zero, and in many states no dollar penalty accrues on a late return with no balance due.
Not every state is that forgiving. Some impose flat minimum penalties on significantly delinquent returns even when the balance is zero, generally in the range of $50 to a few hundred dollars. The bigger risk is being wrong about the zero. If the state disagrees — you forgot 1099 income, miscounted withholding, misapplied a credit — the percentage penalty applies to the real unpaid balance, not the figure you assumed.
When a taxpayer doesn’t file at all, the state revenue department can build a return using wage and income data reported by employers and financial institutions. That substitute return almost always produces a higher tax bill than you would calculate yourself, because the state won’t apply deductions and credits you never claimed. Penalties and interest then stack on top. What might have been a zero balance or a small refund can become a notice for hundreds or thousands of dollars. Filing your own return, even late, is always better than letting the state do it for you.
Extensions When You Owe Nothing
Most states offer a filing extension, typically six months, that pushes the deadline to October. Many grant it automatically when the balance due is zero, so no separate form is needed. The extension form’s main purpose is to accompany an estimated payment, and there’s nothing to accompany when nothing is owed.
An extension buys you time to file, not time to pay. If it turns out you miscalculated and actually owe something, interest and penalties run from the original April deadline regardless. But when you genuinely owe nothing, an extension carries no financial risk and can be useful if you’re waiting on corrected documents or untangling a multi-state situation.
Free Ways to File
If the cost of preparing a return is what’s stopping you, several options are free. IRS Free File is available to taxpayers with adjusted gross income of $89,000 or less and partners with private software companies for free federal filing, with some partners including a free state return.6Internal Revenue Service. 2026 Tax Filing Season Opens With Several Free Filing Options Available Eligibility varies by partner and can depend on age, income, state, or military status. Many state revenue departments run their own free e-filing portals for residents with straightforward returns. If you’re filing only to claim a refund you’re already owed, there’s no reason to pay anyone to help you collect it.