You can file a state income tax return without filing a federal one, and depending on where you earned income, your state may require it even when the IRS does not. State filing thresholds are often much lower than the federal standard deduction, and nonresident income rules can create a state obligation entirely on their own. The catch is procedural: most state returns start from a federal number, so you’ll have to run the federal math as a worksheet even if you never send anything to the IRS.
When You Don’t Have to File Federally
The IRS ties the filing requirement to your gross income, filing status, and age. If your gross income falls below the standard deduction for your filing status, you generally don’t need to file a federal return.1Office of the Law Revision Counsel. 26 U.S. Code 6012 – Persons Required to Make Returns of Income For the 2026 tax year, the standard deduction amounts are:
- Single: $16,100
- Married filing jointly: $32,200
- Head of household: $24,150
These figures reflect the IRS’s 2026 inflation adjustments.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill Taxpayers 65 or older get more room: an enhanced deduction of $6,000 per qualifying individual ($12,000 for a married couple where both spouses qualify) applies for tax years 2025 through 2028, on top of the existing additional standard deduction for seniors.3Internal Revenue Service. Check Your Eligibility for the New Enhanced Deduction for Seniors
A few situations force a federal filing even when your income sits below the standard deduction. Self-employment is the most common: if your net self-employment earnings hit $400 or more, you owe self-employment tax and must file.4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) You’re also required to file if you owe Alternative Minimum Tax, received advance Premium Tax Credit payments, or need to repay a health coverage credit.2Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
If none of these apply, you’re clear with the IRS. That has no bearing on what your state expects.
Why the State May Still Want a Return
State filing thresholds are set independently of the federal standard deduction, and they’re often much lower. Minimum gross income requirements for state residents typically range from under $3,000 to over $15,000, depending on filing status. A single filer with $12,000 in wages may owe nothing to the IRS but still need to file where they live.
Nine states don’t tax wages and salaries at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. (Washington taxes certain capital gains above $270,000.) If you live and work only in one of these and have no income sourced elsewhere, the question doesn’t come up.
Everywhere else, your obligation depends on how the state classifies you. If you’re a full-year resident, your home state taxes all your income from every source. If you moved during the year, you’re a part-year resident and both states may want a return. And if you never lived in the state at all but earned money from a source there, you’re a nonresident, and that’s the scenario most likely to create a state filing when you have no federal one.
Nonresident Income That Triggers a State Filing
Nonresident filing obligations flow from the physical source of the income, not your home address. The common triggers:
- Wages earned while physically working in the state. About 22 states require nonresidents to file if they worked there for even a single day. Others provide relief thresholds, typically 20 to 30 days of work or a minimum income amount ranging from a few hundred to several thousand dollars.
- Rental income from property in another state. A vacation home that generates rent creates a filing obligation where the property sits.
- Capital gains from selling real estate. Selling land or a building in another state means the gain is sourced there and requires a nonresident return.
- Gambling or lottery winnings. Many states tax gambling income earned inside their borders once winnings exceed a state-specific threshold.
These obligations exist independently of your federal return. Low total income that keeps you below the federal threshold does not change the fact that the source state expects to hear from you about money earned within its borders.
Reciprocal Agreements That Can Spare You a Filing
About 16 states have reciprocal tax agreements with at least one neighbor. Under a reciprocal agreement, if you live in State A and commute to work in State B, State B agrees not to tax your wages and you report only to your home state.
These agreements are concentrated in the Midwest and Mid-Atlantic. Common pairings include Illinois and its neighbors (Iowa, Kentucky, Michigan, Wisconsin), the Pennsylvania–Indiana–Ohio cluster, and the Virginia–Maryland–D.C.–West Virginia group. To benefit, you file an exemption form with your employer so the work state doesn’t withhold. If the work state withheld anyway, you’ll need to file a nonresident return there just to recover the money.
Reciprocal agreements only cover wage and salary income. They don’t apply to rental income, business profits, or investment gains sourced in the other state.
Remote Work and the Convenience of the Employer Rule
Working remotely across state lines can put you in a position where two states claim your wages. The baseline rule is that you owe tax proportionate to the days you physically work in each state. Several states override that with a convenience of the employer rule: if your employer is based in one of these states and you work remotely from elsewhere for your own convenience rather than because the employer requires it, the employer’s state taxes all your wages as if you were working there. As of 2026, the states enforcing some version of this rule include New York, Connecticut, Pennsylvania, Delaware, Nebraska, Massachusetts, and Arkansas.
Most states offer a credit for taxes paid to another state, but the credit won’t always fully offset the bill, particularly if your home state’s tax rate is lower.
How to Prepare a State Return Without a Federal One
Roughly 30 states and the District of Columbia use your federal adjusted gross income as the starting point on their state tax form. Another five states start from federal taxable income (AGI minus deductions). Either way, the state form expects a number that normally comes from a completed federal return.
When you’re not filing federally, you run the federal calculation anyway as a worksheet. Tax professionals call this a pro forma return. You complete Form 1040 through the line that produces the figure your state needs, and then you set the form aside instead of mailing it to the IRS.
Building the Pro Forma Number
Start with your gross income: wages, self-employment earnings, interest, rental income, any other taxable amounts. Subtract above-the-line deductions like student loan interest, educator expenses, or retirement contributions to arrive at your adjusted gross income. If your state starts from AGI, that’s the number you carry over.
If your state uses federal taxable income, keep going. Decide whether you’d take the standard deduction or itemize, subtract that amount from AGI, and transfer the result.
State Additions and Subtractions
Once the federal starting number is on the state form, state-specific modifications adjust for differences between what the federal government and your state choose to tax. The most common addition is interest from other states’ municipal bonds; the federal government doesn’t tax it, so it’s not in your AGI, but your state does and requires you to add it back. States usually subtract interest from their own bonds. Other adjustments include adding back federal deductions the state doesn’t allow, or subtracting state-specific exemptions like military retirement pay. Your state’s form instructions list every required modification.
Keep the Worksheet
Do not throw the pro forma federal return away. If the state audits your return, the first thing they’ll want to see is how you arrived at the AGI or taxable income figure on line one. The worksheet is your proof.
E-Filing a State Return by Itself
Most commercial tax software assumes you’re filing federal and state returns together. When you try to submit only a state return electronically, you may hit a block. Many platforms require a federal submission ID or a successfully transmitted federal return before they’ll release the state filing, partly as a fraud measure and partly a limitation of the IRS-state data exchange.
A handful of states run their own standalone electronic filing portals. Pennsylvania, for example, has a state-only system. These are the exception.
If your software blocks a state-only e-file, you have two practical options. Prepare the return in the software and print and mail it as paper. Or check whether your state’s revenue department offers a free direct-filing tool that works independently. Either way, you’ll still need the pro forma federal numbers first.
What Happens If You Skip a Required State Return
Ignoring a state filing obligation because you didn’t file federally is expensive. States treat a missing return the same way whether or not you also owed a federal filing.
The typical penalty structure mirrors the federal model: a percentage of the unpaid tax for each month the return is late, usually around 5% per month, capping at 25% of the balance due. Interest accrues on top of that from the original due date. Some states impose a flat minimum penalty for late returns even when the tax owed is small. Willful failure to file can be treated as a criminal offense in the worst cases.
The bigger long-term risk is the statute of limitations. When you file a return, the state generally has three to four years to audit and assess additional tax. When you never file, that clock never starts. The state can come after you indefinitely. A taxpayer who skipped a nonresident return a decade ago because they didn’t think it mattered can still receive an assessment letter with ten years of penalties and interest attached.
If you find out you should have filed a state return in a prior year, filing late on your own is almost always better than waiting to be found. Many states reduce or waive penalties for taxpayers who come forward before an audit begins.