Working from a different state than your employer's office creates a tax situation that surprises people every filing season. The default assumption — that you pay tax where you live — is roughly right and has enough exceptions to produce unexpected bills, penalty notices, and returns you did not know you had to file.
None of this is exotic. It is just fiddly, and payroll systems frequently get it wrong.
This is general information, not tax advice. State rules differ substantially and change; consult a professional for your situation.
What changed in 2026
- Enforcement improved. States invested in data matching to identify residents whose employers withheld elsewhere, and non-residents working within their borders.
- Employer nexus concerns persisted. A remote employee can create a business tax obligation for their employer in that state, which is why some companies restrict where staff may work.
- Reciprocity coverage stayed patchy. Agreements simplifying neighbouring-state situations continued to cover some pairs and not others.
- Short-stay thresholds remained inconsistent. How many days trigger a filing obligation varies widely, and several states have very low thresholds.
Which state gets to tax you
| Situation |
Typical outcome |
| Live and work in one state |
That state only |
| Live in A, employer office in B, you never go to B |
Usually A, unless B has a convenience rule |
| Live in A, commute to B |
Both; A gives a credit for tax paid to B |
| Reciprocity agreement between A and B |
File only in your home state |
| Extended work trip to state C |
Possible non-resident filing in C |
| Moved states mid-year |
Part-year returns in both |
| Live in a state with no income tax, employer elsewhere |
Depends heavily on the employer state's rules |
The convenience-of-the-employer rule is the one that catches people. A small number of states take the position that if you work remotely for your own convenience rather than your employer's necessity, the income is sourced to the employer's state anyway. If you live in a state with no income tax and work for an employer in a convenience-rule state, you can owe tax you assumed you had escaped.
Practical steps
Check your pay stub. Payroll withholding frequently reflects where the company is registered rather than where you actually work, and the mismatch surfaces at filing time as a balance due in one state and a refund in another. Correcting it mid-year is far easier than reconciling it in April.
Count your days if you split time. Residency tests frequently involve day counts alongside a domicile test, and casual record-keeping does not survive an inquiry. Keep a simple log if you spend substantial time in more than one state.
Notify your employer before relocating. Beyond your own taxes, your presence can create obligations for your employer in that state, which is why many companies maintain an approved-locations list. Moving without telling them creates problems for both sides.
Understand the credit mechanism. When two states both tax the same income, your resident state generally credits tax paid to the other — so you rarely pay twice in total, but you do have to file twice, and the credit is not automatic. It is claimed on the return.
Common mistakes
- Assuming withholding is correct. It is your obligation to get right regardless of what payroll did.
- Ignoring convenience rules. They are the single most common source of unexpected liability for remote workers.
- Not tracking days. Residency disputes are decided on evidence you either have or do not.
- Forgetting local taxes. Some cities impose their own income tax with separate rules.
- Working abroad without checking. International remote work adds treaty questions, foreign filing obligations, and employer permanent establishment risk.
FAQ
Do I pay tax twice if two states claim my income?
Usually not in total, because your resident state typically credits tax paid to the non-resident state. You do have to file in both to claim it.
How long can I work from another state before it matters?
Thresholds vary widely and some are only a handful of days. Check the specific state rather than assuming a grace period exists.
What if my employer refuses to withhold for my state?
You may need to make estimated payments yourself. This is common with small employers not registered in your state.
Does working abroad change things?
Substantially. Foreign work introduces treaty analysis, potential foreign filing obligations, and risk of creating a taxable presence for your employer. Get advice before an extended stay.
Where to go next
For related income-threshold effects, read capital gains tax explained. For workplace considerations, return to office negotiation tips.