Which State Taxes a Remote Worker's Pay? (2026)
Where a remote worker owes state tax — the source rule, domicile, New York's convenience rule, day-count apportionment, reciprocity and safe harbors.
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The short answer
Two separate questions decide where a remote worker owes tax, and people routinely mix them up.
1. Where did the work happen? The general rule across states is that compensation for services is taxed where the services are physically performed. California states it directly: during the nonresident portion of the year you have California source income “to the extent you physically performed services in California”, and the same page tells a Californian who moves out but keeps working remotely for a California employer that they must still file and pay. Illinois reaches the same place from the other direction: a nonresident whose work is not localized to any state becomes taxable in Illinois only after “significant service within Illinois for more than 30 working days”.
2. Where do you live? Your home state taxes you as a resident, generally on all income wherever earned. These two rules can point at the same salary at the same time, which is the whole reason this page exists.
One caveat on the first rule: no federal statute compels states to work this way. It is a general legal principle that states implement individually, not a national mandate you can cite.
Estimate the state tax on your own salary →
Domicile vs residency
Domicile is the more permanent of the two, and courts treat it as a question of fact rather than paperwork. Cornell’s legal dictionary defines it as “the place of someone’s true, permanent home, which they have the intention of returning to, when absent”, requiring both presence and the intention to stay indefinitely — and adds that a person may have several residences but only one domicile. The factors a court would review are the ones you can already guess: voting registration, where you pay taxes, real and personal property, driver’s license and vehicle registration, bank and brokerage accounts, workplace, where your spouse and family are, and organizational memberships. A signed declaration of domicile is evidence, not a trump card — conduct that contradicts it wins.
Residency for tax purposes is a statutory test, and it is not the same test in every state. New York taxes you as a resident if you are domiciled there, or if you keep a permanent place of abode in New York and spend more than 183 days there — “whether or not not domiciled in this state for any portion of the taxable year”, with a narrow carve-out for taxpayers who keep no permanent place of abode in New York and spend no more than 30 days there. California’s test is presence “for other than a temporary or transitory purpose” combined with domicile, judged on the totality of your connections.
The practical consequence: leaving a state is a facts-and-circumstances question, not a date you circle. There is no single national “the day you moved” rule, and we do not pretend otherwise below.
When two states want the same tax
Normally the resident state gives a credit for tax paid to the work state, and the problem dissolves. It stops dissolving in two situations.
The convenience rule. New York taxes a nonresident on days worked in New York — and, under its convenience of the employer test, on days the nonresident worked outside New York at home when the employer did not require it. In Zelinsky v. Tax Appeals Tribunal (2003) a law professor living in Connecticut worked three days a week in New York City and two at home; New York taxed his full salary, Connecticut taxed the same salary, and Connecticut gave no credit. The Court of Appeals upheld it, and the opinion notes that a state tax survives constitutional challenge under Complete Auto Transit v. Brady when it is fairly apportioned — a 100%-tax, 0%-credit outcome met that test.
That is the anti-abuse warning worth carrying: a credit on your own return does not automatically arrive. If you take this seriously, the thing to check is whether your work from home is documented as an employer requirement — written policy, an offer letter, an accommodation — rather than a perk you chose.
Several other states are reported to have similar rules. We verified New York’s from the regulation text as quoted in the court opinion, and we could not retrieve the equivalent text for Connecticut or Pennsylvania, so we do not publish a list of convenience-rule states.
Counting your workdays
The mechanic behind every apportionment formula is a ratio: days worked in the state over total working days. Both California and Illinois publish it, and Illinois defines the denominator precisely — a working day is a day you performed duties for your employer, so weekends, vacation, sick days and holidays do not count.
Illinois’s own worked example: a Missouri resident earning $60,000 who spends 35 days in Illinois out of 250 working days has $8,400 of Illinois-source wages — 14% of the salary. Three things follow from that arithmetic. Above the 30-day threshold you are taxed on a slice, not on everything. A single day over the threshold starts the obligation. And your denominator shrinks every time you take a week of vacation, which raises the ratio of the days you did spend there.
Massachusetts shows the other direction. It tells employers they do not have to withhold for a nonresident who does not work in Massachusetts “even if they’re paid from a Massachusetts office”, and that a nonresident employee working outside the state does not by itself create a withholding obligation. The pandemic-era rule that taxed such work expired on September 13, 2021 and has not been replaced.
Reciprocity
A reciprocal agreement is the clean fix for a border commuter: the work state agrees not to tax a resident of the partner state, who instead pays the home state. Its value is that it removes the credit question entirely — there is only one return.
Illinois publishes its partners as Iowa, Kentucky, Michigan and Wisconsin, and Iowa’s revenue department confirms the pair from the other side, adding the limitation that matters: “Iowa’s only income tax reciprocal agreement is with Illinois”, and that gambling winnings and unemployment compensation are not wages, so they fall outside the agreement and stay taxable by both.
Two limits worth stating: reciprocity covers wages and salary only, and we have not verified a complete nationwide list of agreements, so we do not print one. IRS Publication 15 does not contain one either — check the revenue department of the state you live in and the state you work in.
Safe harbors
Two genuinely different rules are called “safe harbor,” and conflating them causes bad decisions.
A day-count de minimis says you owe nothing below a number of days. Illinois exempts a nonresident with “less than 31 days of service in Illinois”. This is the useful one for a remote worker: it converts a continuous worry into a countable number.
An outbound assignment safe harbor is about leaving, not visiting. California treats a resident who is outside the state on an employment-related contract for an uninterrupted 546 consecutive days as a nonresident, with return visits totalling no more than 45 days in a covered year still treated as temporary. It does not apply if the principal purpose of leaving is to avoid California tax, and it says nothing about a few days of work in California while you live elsewhere.
What to keep
Because the tests are factual and the arithmetic is a day-ratio, the records that win an argument are the boring ones. Keep a per-day log of where you worked and for how long; the employer’s written statement of your work location; your employment contract or remote-work amendment; and evidence of the ties that establish domicile — voting registration, driver’s license, vehicle registration, property, bank accounts, and where your family lives.
Keep it for as long as the relevant state can still amend the return. The log is cheap to maintain daily and expensive to reconstruct three years later.
See how each state taxes wages →
What we deliberately do not claim
This is the section that separates this page from the ones that rank above it. We researched the following and could not support them from a primary source, so they are not stated as fact anywhere on this site.
| Claim you will see elsewhere | What we found |
|---|---|
| Employers owe withholding once they pay $100,000 in the state, or employ 3+ people there | Not located in any currently-in-force statute or revenue publication we could retrieve. California’s only $100,000 figure is a real-estate withholding threshold, and the wage nexus sits in a regulation section we could not open. The number is widely repeated by payroll vendors; we will not repeat it. |
| A list of states with remote-work tax stability acts | Enactment status and effective dates could not be verified — the state legislature sites we need were unreachable, and a bill’s text is not proof it passed. We report nothing here rather than a plausible-looking list. |
| How many states have reciprocity agreements in total | Only Illinois’ four partners and the Iowa–Illinois pair are verified. A national count would be a guess dressed as a number. |
| “You become a resident on the day you move.” | No federal or multi-state authority fixes such a date, and the two states we verified use different, non-interchangeable tests. Residency turns on domicile facts, not on a calendar entry. |
Common questions
Which state taxes a remote worker?
As a general rule, the state where you physically perform the work — where your employer sits does not decide it. California puts it plainly: for the nonresident part of the year you have California source income “to the extent you physically performed services in California”, and Massachusetts tells employers they do not have to withhold for a nonresident who never works in Massachusetts “even if they’re paid from a Massachusetts office.” Your home state separately taxes you as a resident on worldwide income.
Does my employer's state tax me if I never work there?
Not merely because the company is headquartered there. Residency and physical presence in the state are the two tests that matter, and neither follows from an employer’s mailing address. The exception worth knowing is New York’s convenience rule, described below — it taxes days you could have worked in New York but chose not to.
What is the convenience of the employer rule?
A rule that counts a day you worked outside the state as an in-state day unless your employer required you to work elsewhere. New York’s regulation asks that the out-of-state work be one that “of necessity, as distinguished from convenience, obligate[s] the employee to out-of-state duties.” Working from home because you prefer to is convenience, not necessity.
Do I owe tax if I only work a few days in another state?
It depends on the state’s own threshold. Illinois exempts a nonresident who has performed “less than 31 days of service in Illinois”; above that, income is apportioned by the share of working days spent there. Other states set different thresholds, and some have none — we have not verified a national list, so we do not print one.
What records should a remote worker keep?
A per-day log of where you worked, with hours, plus proof of the ties that establish domicile: voting registration, driver’s license and vehicle registration, real property, bank accounts, and where your spouse and family live. Both California and Illinois apportion by a day-ratio, and the denominator counts working days only — weekends, vacation, sick days and holidays are excluded.
This page is general information about how states tax remote work, not tax advice, and it does not cover every state. Where a figure here disagrees with a published source, the source is correct — see the Disclaimer and the method section for what this site’s numbers do and do not model.