Remote Work and State Taxes

Remote work moved millions of desks across state lines and almost nobody told their payroll department. The tax consequences show up quietly — a bigger refund from one state and a surprise bill from another, or two states taxing the same paycheck with no obvious way to fix it.

None of this is exotic. It's four rules interacting badly, and once you can name them you can usually get ahead of the problem in one conversation with HR.

Rule one: your resident state taxes everything

Almost every state with an income tax taxes its residents on all income, wherever earned. So residency is the first question, and it has two independent answers.

Domicile is your true permanent home — where you intend to return, evidenced by your driver's license, voter registration, where your family lives, where your doctor is. It changes only when you actually establish a new one, which is why people who spend a year in another state often remain domiciled where they started.

Statutory residency is the trap. New York's definition is a good example: you're a resident if your "domicile is New York State" or if you "maintain a permanent place of abode in New York State for substantially all of the taxable year and spend 184 days or more in New York State during the taxable year." You can be domiciled in Florida, keep an apartment in Manhattan, spend 184 days there, and be a New York resident for tax purposes. Other states use similar tests with their own day counts.

The practical implication: if you split time between two states, count days. A calendar with a note for each night is worth more in an audit than any argument you can construct afterward. Our guide to state income tax when you move covers domicile changes and part-year returns in more depth; the rest of this page is about what happens when your employer's state and your own disagree.

Rule two: your work state taxes what you earn there

Nonresidents generally owe tax to a state on income sourced to that state — for wages, that usually means days physically worked there. Work 60 days in a state and 190 elsewhere, and roughly 60/250 of your wage income is sourced there.

The complication is that day thresholds vary wildly. Some states start counting from day one; others give a grace period of a set number of days or a dollar threshold before a nonresident filing obligation kicks in. If you travel for work at all, or spent a summer at a relative's house with your laptop, this is worth checking rather than assuming.

Rule three: the convenience of the employer

This is the one that catches remote workers hardest, and it inverts the day-counting logic entirely.

New York's Department of Taxation and Finance states that for a nonresident whose primary office is in New York, "your days telecommuting are considered days worked in the state unless your employer has established a bona fide employer office at your telecommuting location." It adds that "unless your employer specifically acted to establish a bona fide employer office at your telecommuting location, you will continue to owe New York State income tax on income earned while telecommuting."

Read that again. Days you never set foot in New York are New York workdays, because working from home was your convenience rather than your employer's necessity. A spare bedroom is almost never a bona fide employer office — the factors are demanding and are aimed at genuine business necessity, not preference.

A small number of states apply some version of this rule, and the details differ among them. If your employer's office is in a state you don't live in, look up that specific state's treatment of telecommuting days before you plan around a lower tax bill.

Rule four: the credit that's supposed to prevent double taxation, and its cap

Your resident state generally gives a credit for income tax paid to another jurisdiction on the same income. New Jersey's version is typical, claimed on Schedule NJ-COJ, and so is its ceiling: "Your credit cannot be more than the amount you would have paid if you earned the income in New Jersey."

That cap is where the money goes. Work the arithmetic on a New Jersey resident with a Manhattan employer who works from home three days a week.

• Under New York's convenience rule, all of the wage income is sourced to New York. Say New York tax on it comes to $6,400.
• New Jersey taxes the same income as resident income. Say New Jersey's own tax on it would be $4,900.
• The credit is capped at what New Jersey would have charged: $4,900. New Jersey's tax on that income nets to zero.
• Total state tax: $6,400. The extra $1,500 above New Jersey's own rate is what the convenience rule costs — and no credit recovers it.

Reciprocity agreements are the clean version of this. New Jersey and Pennsylvania have one: "compensation paid to New Jersey residents employed in Pennsylvania is not subject to Pennsylvania income tax," so you file only at home. But agreements are narrow. New Jersey notes the arrangement "does not apply to income or wage tax imposed and collected by the City of Philadelphia or any other municipality in Pennsylvania," and reciprocity generally covers wages only, not other income. Local taxes — Philadelphia, New York City, much of Ohio — run on their own rules.

Where reciprocity exists you usually have to claim it by filing a certificate with your employer. Nobody does it for you, and the withholding won't stop until you do.

The home office deduction you cannot take

This is the most common piece of bad advice in the remote work conversation, so here it is flatly: if you are a W-2 employee, you cannot deduct your home office on your federal return.

IRS Publication 587's own qualifying flowchart puts it as a disqualifying question — "Are you using the part of your home as an employee?" — and if the answer is yes, the result is no deduction. The underlying reason is in Publication 529: unreimbursed employee expenses were miscellaneous itemized deductions subject to the 2%-of-AGI floor, and "you can no longer claim any miscellaneous itemized deductions" in that category.

There are four narrow carve-outs that still allow employee business expense deductions: Armed Forces reservists traveling more than 100 miles from home, qualified performing artists, fee-basis state or local government officials, and employees with impairment-related work expenses. Working from your kitchen table is not among them.

The deduction does exist for the self-employed, and the simplified method there is $5 per square foot on up to 300 square feet. If you have a genuine side business alongside your job, that's a separate calculation on a separate schedule — see our side hustle tax guide — but it doesn't launder your employee expenses into deductible ones.

What you can do instead is ask for an accountable plan reimbursement. If your employer reimburses documented business expenses under a plan that meets the IRS requirements, the reimbursement isn't taxable income to you and the employer takes the deduction. That's a request to HR, not a line on your 1040, and it's the only version of this that actually works for employees.

What to do about it

1. Tell payroll where you actually work, the week it changes. Your W-2 state boxes are built from what payroll knows, and a year of wrong-state withholding takes two returns and several months to unwind.
2. Check your pay stub for the state and local tax lines. Our pay stub guide covers the rest of the lines; this is the one remote workers should check first.
3. Find out whether your employer's state applies a convenience rule and whether your home state has reciprocity with it. Two searches on the two state revenue department sites.
4. If both states are withholding, or the wrong one is, file the appropriate nonresident return or exemption certificate rather than waiting for it to sort itself out.
5. Keep a day log if you're anywhere near a residency threshold or you work in multiple states. A calendar export at year end is a five-minute task that answers a question an auditor may ask three years later.
6. If you moved mid-year, expect to file a part-year resident return in each state, allocating income by when you lived where.

Two things not to do

Don't work from another state for weeks without telling anyone. Beyond your own filing obligations, an employee working in a new state can create payroll registration and other obligations for the employer — which is why a growing number of companies now restrict which states you may work from. Finding out afterward is worse for everyone, and "I was at my sister's for two months" is not a story you want to tell for the first time during a state audit.

And don't try to solve a multi-state year with consumer tax software and optimism. Two nonresident returns plus a resident return plus a credit calculation is exactly the situation where a preparer earns their fee — our guide on when you actually need an accountant covers the threshold. The arithmetic above is here so you know what to ask them, not so you can skip them.