If you work remotely from one state for an employer based in another, your home state taxes all of your income, and the state where the employer sits may tax some or all of it too. Which rule applies depends on where you physically do the work and whether the employer’s state uses a “convenience of the employer” rule. In most pairings you file two returns and claim a credit on the resident one so you are not actually taxed twice on the same dollar. In a few pairings the credit does not fully wipe out the extra bill, and you end up paying at the higher of the two rates.
Home State Versus Work State
The baseline is simple: income is taxed where you live and where you earn it.1Tax Foundation. State Individual Income Taxes on Nonresidents: A Primer For an in-person worker those are the same place. Remote work splits them.
Your resident state taxes your entire income no matter where it comes from. If you live in Georgia and work remotely for a company headquartered in Illinois, Georgia taxes the whole salary. Illinois can tax the portion of income you earned while physically present in Illinois. If you never set foot in Illinois, Illinois generally gets nothing, because most states only tax nonresidents on work performed inside their borders.
Nine states have no individual income tax at all: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. Living in one of these and working for an employer based in the same state removes the multi-state problem. Living in one of these and working remotely for an employer in a convenience-rule state is the worst combination, because you owe the employer’s state and have no home-state tax to credit against.
The Convenience of the Employer Rule
A handful of states flip the baseline. Under the convenience of the employer rule, if you work remotely for a company based in one of these states, your income is treated as earned at the employer’s office even though you were never there. The only way out is showing the remote arrangement exists because the employer needs you outside the state, not because you preferred to live elsewhere.
New York originated the rule and enforces it most aggressively. Connecticut, Delaware, and Nebraska also apply versions of it. Massachusetts has been reported as enforcing a similar standard. Oregon applies a narrow version limited to employees performing managerial functions. New Jersey has no convenience rule of its own but applies another state’s rule against that state’s residents working for New Jersey employers, so a New York resident working remotely for a New Jersey company gets hit by New York’s convenience rule and New Jersey sources the income to itself under a retaliatory provision.2State of NJ – Department of the Treasury – Division of Taxation. Convenience of the Employer Sourcing Rule Enacted for Gross Income Tax FAQ
The effect is real money. Live in North Carolina, work remotely for a New York employer, and New York can tax your whole salary as if you earned it in Manhattan. North Carolina still taxes it because you live there. North Carolina will credit what you paid to New York, but if New York’s rate is higher, your effective rate is New York’s rate, not the North Carolina rate you were counting on when you chose where to live.
Reciprocal Agreements
About 30 pairs of states have reciprocal tax agreements that cancel the multi-state problem. Under a reciprocal agreement you pay income tax only to your resident state, whatever the employer’s location, and the work state agrees not to tax you.
These clusters sit in the Midwest and Mid-Atlantic, where cross-border commuting is routine. Kentucky has agreements with Illinois, Indiana, Michigan, Ohio, Virginia, West Virginia, and Wisconsin. Pennsylvania has agreements with Indiana, Maryland, New Jersey, Ohio, Virginia, and West Virginia. Maryland has agreements with the District of Columbia, Pennsylvania, Virginia, and West Virginia.
Reciprocity is not automatic. You file an exemption form with your employer so they withhold only for your home state. Skip that step and the employer will withhold for the work state by default, and you will have to file a nonresident return there to get the money back.
The Credit That Prevents Double Taxation
When there is no reciprocal agreement and you owe two states, the resident-state credit is what stops actual double taxation. Almost every state with an income tax offers one.
The credit reduces your home-state bill by what you paid to the other state, capped at what your home state would have charged on that same income. Pay $5,000 to New York, and if your home state would have charged $3,500 on the same income, you get a $3,500 credit. The extra $1,500 is gone. Your effective rate lands at the higher of the two.
Order matters. File the nonresident return first so you know the exact tax owed to the other state. Then file the resident return and claim the credit based on that number. Most states want a copy of the nonresident return attached. Doing it backward means estimating a figure you should already have.
One more catch: most states will only give you credit for tax actually paid to the other state. Skip the nonresident return and you lose the credit, so you pay your home state the full amount with nothing to offset it.
When a Trip Triggers a Nonresident Return
Not every day of out-of-state work forces a filing. Thresholds vary widely.
As of January 2026, roughly 20 states require a nonresident return after a single day of work in the state. California, New York, Pennsylvania, Massachusetts, and New Jersey are in that group.3Tax Foundation. Nonresident Income Tax Filing and Withholding Laws by State, 2026 Fly in for one meeting, earn income that day, and you technically owe a return.
Other states are more forgiving:
- Illinois, Indiana, and Montana require filing only after more than 30 days of work in the state.
- Connecticut requires filing after more than 15 days and more than $6,000 earned in the state. Maine’s trigger is more than 12 days and more than $3,000.
- Missouri requires filing at $600 of in-state income. Idaho’s threshold is $2,500. Vermont’s is $100.
Alabama, North Dakota, Utah, and West Virginia offer day-based thresholds only to residents of states with no income tax or a similar exclusion. If your state has its own income tax, those thresholds may not help you.3Tax Foundation. Nonresident Income Tax Filing and Withholding Laws by State, 2026
Employer Withholding and Your W-2
Employers are required to withhold income tax for the state where the employee physically works. For a fully remote employee that is the home state, even if the employer has no other connection to that state.4National Conference of State Legislatures. State and Local Tax Considerations of Remote Work Arrangements A single remote employee can create tax nexus for the employer in that state, which is why some employers restrict where they will hire.
If your employer sits in a convenience-rule state, they may also withhold for their own state, leaving you to sort out the credit at filing time. Check your W-2. Box 15 lists the states withholding was sent to and Box 17 shows the amounts. If withholding went to a state where you neither lived nor worked, file a nonresident return there to claim a refund.
Tell your employer promptly when your work location changes. If they keep withholding for the old state after you move, you will owe your new state with nothing withheld and have to chase the incorrect withholding through a nonresident return.
Moving Mid-Year
Relocate during the year and you become a part-year resident of both states. Each taxes the income you earned while living there, and you file a part-year return for each, allocating income by dates of residency.
A domicile change takes more than a new lease. You need intent to make the new state your permanent home, actual physical relocation, and a new residence established there. An existing domicile continues until a new one replaces it, and a temporary or short-term move does not count. States have challenged domicile changes when a taxpayer kept the old home, kept voter registration in the old state, or returned frequently. If the former state audits and concludes you never really left, you can owe a full year of tax there.
Independent Contractors
Self-employed workers deal with the same sourcing rules but without an employer handling withholding. Freelance from Texas for clients in California and New York and you may owe income tax in both of those states on the work attributable to each, and you make the payments yourself.
Contractors owe quarterly estimated payments to every state where they owe income tax. Federal estimated payments are due April 15, June 15, September 15, and January 15 of the following year, and most states track that schedule. Missing a quarter triggers underpayment penalties and interest in each state separately.
Sourcing for contractors is not always the same as for employees. Some states look to where the client is located, others to where the work was performed. If you work from a home office, most look at where you were sitting when the work happened. Keep records of which projects were done in which states, especially if you travel to client sites.
Penalties for Skipping a Return
Ignoring a nonresident filing obligation does not close the file. States share data with each other and with the IRS, and W-2 income gets reported to every state in Box 15. If New York sees income sourced to New York and no return from you, an assessment notice is a question of when.
The federal failure-to-file penalty is 5 percent of the unpaid tax per month, up to 25 percent. If a return is more than 60 days late, the minimum penalty is $525 or 100 percent of the tax owed, whichever is less. Interest runs on top until paid.5Internal Revenue Service. Failure to File Penalty State penalties follow similar structures with different percentages and minimums.
Federal Legislation That Could Change This
The Mobile Workforce State Income Tax Simplification Act has been introduced in Congress repeatedly over the past decade, most recently in the Senate in April 2025.6Congress.gov. S.1443 – Mobile Workforce State Income Tax Simplification Act of 2025 It would set a uniform federal 30-day threshold before a state could tax a nonresident’s income, overriding the mix of one-day rules, convenience rules, and mismatched filing requirements. As of early 2026 the bill remains in committee. Until it passes, the current state-by-state rules apply.