Changing Your Address Does Not Change Your Residency
You took the job in Austin. Or you went remote and finally moved out of San Francisco. You updated your address, enjoyed your first paycheck with no state withholding, and figured California was history.
California might disagree. So might New York. A state does not stop taxing you because you left. It stops taxing you when it can no longer prove you are still its resident, and that proof runs on facts, not forms.
This is a general guide, not tax advice. Tax year numbers below use 2025 schedules unless stated, because 2026 returns are not out yet. Equity has its own allocation rules, which I covered in RSU Taxes When You Move States. I will not repeat them here.
Domicile Beats Address
Your domicile is the one place you treat as your permanent home and plan to return to after being away. New York defines it as your permanent and primary residence that you intend to return to or remain in. You can own three houses and have only one domicile.
New York says your domicile does not change until you show “clear and convincing evidence” that you abandoned the old one and set up a new one. It adds that filing a declaration of domicile or registering to vote in the new state is not enough. All aspects of your life count.
California uses a different frame, with the same result. FTB Publication 1031 says the theory is that you are a resident of the place where you have your closest connections. It tells you to compare your ties to California with your ties elsewhere. The strength of the ties matters more than the count of ties.
So skip “did I move?” and ask “if an auditor lined up my life, which state would it point to?”
Statutory Residency: The Trap for People Who Kept the Apartment
You can owe resident tax in a state even when your domicile is somewhere else. New York is the famous case.
New York treats you as a resident if your domicile is New York, or if both of these are true:
- You maintain a permanent place of abode in New York for substantially all of the tax year.
- You spend 184 days or more in New York during the year.
Two details bite. Any part of a day counts as a day. And you do not need to be at the apartment for the day to count. Landing at JFK at 11 PM for a Friday meeting is a New York day.
A permanent place of abode is a building where you can live that you permanently maintain and is suitable for year-round use. Owning it is not required. Your rent-stabilized one-bedroom that you “keep for visits” qualifies.
Worked example. You move to Austin in March but keep your Brooklyn lease for a year “just in case.” Between visits to the office, holidays, and your cat’s vet, you log 190 days in New York. You are a statutory resident. New York taxes all your income as a resident, even though you claim Texas as home. And because the apartment is in Brooklyn, the same test makes you a New York City resident too, so NYC’s own income tax lands on top.
The fix is boring. Drop the lease, or keep your New York days at 183 or fewer and keep a log.
Part-Year Returns and the Move-Date Line
If you really did change residency mid-year, you file part-year returns. California uses Form 540NR. New York uses Form IT-203.
California taxes you on everything you earned while a resident. After the move date, it taxes you only on California-source income. FTB Pub 1031 sources wages to where you performed the services. It says the location of your employer, where the payment issues from, and where you are when you get paid do not change the source.
Here is a rough 2025 example. You earn $250,000 a year, paid evenly, as a single filer. You move from San Francisco to Austin on July 1.
- Pay while a resident (January to June): about $125,000, all California income.
- Pay while a Texas resident (July to December): about $125,000, not California income.
- California computes tax on your full $250,000 using the 2025 schedule. That is $3,201.97 plus 9.3% of the amount over $72,724, which is about $19,689. It ignores deductions and credits here.
- That is an effective rate of about 7.9%. FTB then applies that rate to your California income only.
- $125,000 times 7.9% is about $9,840.
So the move cuts roughly $9,800 off the year. Next year, with a full year in Texas, the California bill for this job goes to zero. The move date drives the split, so a clean, documented date matters. It is where the auditor starts.
Texas has no personal income tax on wages. Washington has none on wages today either, but it has a separate capital gains tax, and in 2026 it passed a 9.9% tax on income over $1 million that starts in 2028. Check both before you assume “no tax” covers your brokerage account.
The Move Date Is a Claim, Not a Fact
You do not pick the date. The facts pick it. If you “moved” July 1 but your family stayed in the old house until October and your kid finished the school year there, an auditor will argue October.
Fix the date with evidence that lands on or near it:
- Lease signed or home closing date in the new state
- Moving truck invoice and utility start dates
- New driver’s license and vehicle registration
- Updated voter registration
- A dated, signed declaration of domicile where your new state offers one (it helps, it does not settle the question)
The Convenience Rule: When You Never Left Your Job’s Tax Home
This one catches remote workers who did everything right. Some states tax your wages based on where your employer’s office is, even when you work from another state.
New York’s version, per the Department of Taxation, says that if your primary office is in New York and you telecommute from outside the state, those telecommuting days count as New York days. The exception is when your employer has set up a bona fide employer office at your telecommuting location. Absent that, you keep owing New York tax. The test asks whether you work out of state out of necessity for your employer, not out of convenience for you.
As of January 2025, the Tax Foundation counts eight states with some version of a convenience rule: Alabama, Connecticut, Delaware, Nebraska, New Jersey, New York, Oregon, and Pennsylvania. The details vary a lot. Connecticut and New Jersey apply theirs only to residents of states that have their own rule, Oregon’s covers only managers, and Alabama’s came from a tax tribunal ruling rather than a statute. Confirm with the state before you plan around any of them.
Worked example. You live in Austin and work for a company headquartered in New York City. Your assigned office is in Manhattan, but you work from home in Texas by choice. Your pay is $250,000.
- Texas has no income tax, so Texas takes nothing and gives you no credit.
- New York treats your workdays as New York workdays. It can tax all $250,000 as New York-source income.
- Using the 2025 single schedule (6.85% above $215,400), plain bracket math on $242,000 (after the $8,000 standard deduction) gives about $14,200. But New York claws back the benefit of its lower brackets once income passes $215,400, and at $250,000 that recapture adds about $1,800. Your real bill is about $16,000.
You live in a no-tax state and still pay a New York bill. The usual escape is a different situation: your employer closes the New York office and assigns you to a real location, or you work for a company with no New York base.
Also note the narrow reading. If you work 100% remotely for a company with no New York office, this rule does not reach you. If you have a hybrid arrangement, days physically worked in New York are New York days regardless.
What Auditors Actually Check
States do not take your word for it. They ask for proof. The New York audit guidelines, published by the Department of Taxation, name five primary factors:
- Home. Which place do you use and maintain more, and how do they compare in size and value?
- Active business involvement. Do you still run or work for something in the old state?
- Time. What share of the year did you spend in each place?
- Items near and dear. Where do your heirlooms, collections, important papers, and sentimental things live? The guidelines specifically mention pets in this factor.
- Family connections. Where are your spouse, children, and extended family? Where do the kids go to school?
The same guidelines say auditors look at credit card receipts and phone bills to show where you were. They also point out that you can change a voter registration or driver’s license for convenience without ever intending to change domicile. Paperwork supports your story. Your actual life has to match it.
California’s list is similar. FTB Pub 1031 lists time in the state, the location of your spouse and children, your principal residence, the state that issued your driver’s license, where your vehicles are registered, your professional licenses, where you are registered to vote, bank locations, medical providers, accountants and attorneys, social ties like clubs and places of worship, and the location of your real property and investments.
The biggest tell is a mismatch. Texas license, California doctor, California dentist, and a California house you visit four months a year. Auditors weigh the pattern of your life, and the paper is only one part of it.
California’s Nine-Month Presumption and the 546-Day Safe Harbor
Two California rules matter if you are on the move.
The nine-month presumption. FTB says you are presumed to be a California resident for any year in which you spend more than nine months in the state. You can rebut it, but plan as if you cannot.
The 546-day safe harbor. If you are domiciled in California and go outside the state under an employment-related contract for an uninterrupted period of at least 546 consecutive days, FTB treats you as a nonresident. That applies unless one of these is true:
- You have intangible income (interest, dividends, capital gains) above $200,000 in any year of the contract.
- The principal purpose of leaving is to avoid California personal income tax.
Return visits to California totaling no more than 45 days in any taxable year covered by the contract count as temporary. Notice the target audience: someone sent abroad or out of state by an employer for a long assignment. A voluntary move to Austin with no contract probably does not fit. Do not build a plan around this unless your employer’s paperwork matches the rule.
Trailing Nexus: How the Old State Keeps Collecting
Even after you win the residency question, an old state can still tax income that has its source there.
- Wages sourced to work done there. California sources wages to where you performed the services. A bonus paid in August for January to June work done in San Francisco carries California-source income, even if you now live in Texas.
- A house you kept. California taxes a nonresident’s gain on California real property. FTB’s example: a Nevada resident sells California rental property at a gain, and California taxes the gain. The same logic applies to rent while you own it.
- A permanent place of abode in New York. Keeping it feeds the statutory residency test above.
- Deferred pay and equity. Both follow allocation rules. See the RSU post linked above.
Your Move Checklist
Do these in the first 60 days. Your 2 AM self, the one reading FTB publications, will thank you.
- Pick the move date and write it down. Keep the lease, closing statement, and moving invoice.
- Get the new driver’s license and register the vehicles.
- Register to vote in the new state and cancel the old registration.
- Move your primary bank accounts and brokerage address.
- Switch doctors, dentist, accountant, and attorney to the new state.
- Move the dog, the kids’ school, and the sentimental stuff. Auditors look at these.
- Sell or lease out the old home. If you keep it, expect it to count against you.
- Keep a day log. Calendar entries, flight confirmations, and receipts all count.
- Update your employer: new home address, new work location, and state withholding. Ask HR in writing whether your assigned work location is now your home office.
- File a part-year return for the move year in the state you left (540NR or IT-203). If your new state taxes income, file its part-year return too. Texas and Washington have no wage return to file. File on time.
Common Questions
How many days can I spend in New York without being a resident?
You can spend 183 days or fewer in New York and avoid the statutory residency test, as long as your domicile is elsewhere. At 184 days, with a permanent place of abode in New York for substantially all of the year, you are a resident. Any part of a day counts as a full day.
Does moving to Texas stop California from taxing my salary?
It stops California from taxing wages earned after you become a nonresident, if you really changed your residency. Pay for work you did in California before the move date is still California-source income. California also keeps taxing California property income, such as rent and gains on California real estate.
What is the convenience of the employer rule?
It is a rule in a few states, including New York, that counts days you telecommute from another state as in-state workdays when remote work is your choice. If your assigned office is there, you owe that state tax on those wages unless your employer needs you elsewhere or set up a bona fide office where you work.
Can I fix my residency after an audit starts?
No. Auditors look at what you did during the years they review, so you cannot create evidence after the fact. What you can do is gather the records you already have: leases, flight confirmations, card statements, and calendars. Then bring in a tax professional who handles residency audits before you answer the notice.
