Do Expats Pay State Taxes? Why California and New York Don’t Let You Leave That Easily

Yes, expats who move abroad mid-year almost always pay state taxes for the portion of the year before the move. The question isn’t whether you pay state taxes at all; it’s whether you file as a part-year resident or a full-year resident. Do expats pay state taxes for the partial year? Almost always yes, on income earned while still domiciled in the state.

Most states use a part-year resident filing for the move year. You file Form 540NR in California, IT-203 in New York, or the equivalent in your state. You report all worldwide income for the months you were a resident, and only state-source income for the months you were a nonresident. The state prorates your standard deduction, exemptions, and credits based on the days of residency. The result is a tax bill for the resident portion that’s roughly what you’d have owed if you’d stayed the whole year and earned the same income at the same monthly rate.

The trap is which day counts as your departure. States don’t accept your subjective claim that you left on March 15th. They look at when you physically left, when you broke your ties, and when you established a new domicile elsewhere. If you flew out on March 15th but your spouse stayed in the house until June, your family ties argue for a June departure, not a March one. If you kept your driver’s license and bank accounts in California until you renewed them at expiration in November, that’s evidence of November domicile, not March.

The departure date affects more than just the months of residency. It affects how income earned around the departure date gets allocated. A bonus paid March 1st but for work performed January through December is messy: California will argue the bonus relates partly to in-state work and is partly California-source. Stock options that vested April 1st but were granted while you were a resident get allocated based on the vesting period. Severance paid after departure but attributable to in-state work follows the work, not the payment date.

Do expats pay state taxes on foreign income earned after the departure date? Generally no, if the departure was real and the income is genuinely foreign-source. California, for instance, can’t tax wages earned in Singapore by a nonresident, even if the employer is a California company. The work was performed in Singapore, the worker was a nonresident at the time, so the income isn’t California-source. This is where having a clean departure date matters: foreign income earned the day after you left is fully outside California’s reach, while foreign income earned the day before you left is fully inside it.

We strongly recommend timing major income events around the departure when possible. If you can defer a stock option exercise or a bonus until after a clean departure date, the state tax savings can be substantial. California’s top marginal rate is 13.3% and New York City residents face combined state and city rates over 14%. On a $500,000 income event, that’s $65,000 to $70,000 in state tax avoided by exercising in the right week.

The other piece is what state you move to next. If you’re moving from California directly to a foreign country, your departure date from California is the date you established foreign residency. If you’re moving from California to Florida first, then to Portugal, your California departure date is the date you established Florida domicile (which can be the day you got your Florida license and filed your declaration of domicile). The Portugal move that follows doesn’t change your state tax picture because Florida has no state tax.

If you’re audited later, the state will reconstruct your move from documentation: lease agreements, plane tickets, license records, voter rolls, employment records, banking activity. Keep all of this for at least six years after your departure year. The statute of limitations on state audits varies but four to six years is common, and longer if the state alleges fraud or non-filing. We’ve handled audits where the determining evidence was a Costco membership renewal showing a California address two years after the claimed move date. That kind of detail matters.

Yes, expats pay state taxes on US-source rental income from property located in a state with an income tax, regardless of where they live. Do expats pay state taxes on rental income from a California rental while they live in Spain? Absolutely. Do expats pay state taxes on a New York rental while based in Tokyo? Yes, every year, on a New York nonresident return.

Real property income is sourced to the location of the property. This is universal. Every state with an income tax taxes nonresidents on rental income from property within its borders. The owner’s residence doesn’t change this. You can live in Singapore for twenty years and still owe California 9.3% on a rental property in Los Angeles.

The filing mechanism is a nonresident return. In California, that’s Form 540NR. In New York, Form IT-203. The return reports only the state-source income, in this case the rental property’s net income (rent minus expenses minus depreciation), and applies state tax rates to that amount. You also get to use state-level deductions and credits that apply to nonresident filers, though the deduction base is smaller.

The interaction with federal tax is straightforward. You report the rental on federal Schedule E and pay federal tax on it as ordinary income (or get a depreciation-driven loss, depending on the property). The state piggybacks on the federal numbers, applying state adjustments. You don’t get to exclude rental income under the Foreign Earned Income Exclusion because it’s not foreign earned income; it’s US passive income, fully taxable at federal and state level.

Foreign tax credits don’t help here either. The Foreign Tax Credit applies to foreign income taxed by a foreign country. US rental income isn’t foreign income, and your destination country generally doesn’t tax it (some countries do tax worldwide income for residents, like Portugal and Spain, in which case you’d get a credit on the foreign return for the US tax paid). But the credit flows the other way: foreign credit for US tax, not US credit for foreign tax on US-source income.

Do expats pay state taxes on capital gains when they eventually sell the rental? Yes again. The sale of US real property by a nonresident triggers state capital gains tax in the property’s state. California taxes the gain at ordinary income rates (no preferential capital gains rate). New York follows similar rules. The state gets its cut on the way out, regardless of how long the seller has been a nonresident.

Many expats decide the ongoing state filing burden isn’t worth it and sell the rental property within a year or two of leaving. The math depends on the property’s cash flow, appreciation, and the owner’s overall financial picture, but as a practical matter, owning California or New York rental property as a long-term expat means an annual nonresident return for as long as you own it. Add the cost of CPA preparation ($500 to $1,500 per nonresident return) and the audit risk, and the property needs to be performing well to justify the holding cost.

The cleanest scenarios are expats who either sell before leaving or use a 1031 exchange to move the property into a no-tax state. A 1031 exchange from California rental to Texas rental defers the federal capital gains and eliminates ongoing California source income. The mechanics are tight (45-day identification, 180-day close, like-kind property) and California has its own claw-back rule that triggers California tax if you eventually sell the Texas property, so it’s not a free lunch. But for expats planning a permanent overseas life, restructuring the real estate portfolio out of high-tax states before the move solves the recurring state filing problem permanently.

Breaking ties with California or New York requires a documented, methodical departure that addresses every factor each state’s tax authority considers. The question “do expats pay state taxes after they leave” depends entirely on whether the departure was clean. A messy departure means yes. A clean departure means no, except on source income.

Start with domicile. Domicile is your permanent home, the place you intend to return to. To change domicile, you have to establish a new one with the intent to remain there permanently. Moving abroad qualifies if your move is intended to be open-ended. A two-year work assignment with a planned return doesn’t change domicile; California will treat you as a temporary absentee. A permanent move (no return date, sold the house, family relocated) does change domicile.

Get every piece of documentation lined up. Driver’s license: surrender California or New York license, get a license in the new domicile state or country. Voter registration: cancel California or New York, register in the new state if applicable. Vehicle registration: re-register out of state or sell. Banking: close local accounts, open accounts using the new state or foreign address. Healthcare: change doctor, dentist, pharmacy to new location. Professional licenses: update active practice address (you can keep the license but the practice has to move). Estate documents: update will, trust, and powers of attorney to reference the new state.

Address every “permanent place of abode” question. In New York especially, keeping an apartment in Manhattan is fatal even with no time spent there. Sell the apartment, terminate the lease, or convert to a rental with a long-term tenant who has exclusive use. New York’s statutory residency rule under Tax Law §605 applies if you maintain a permanent place of abode AND spend more than 183 days in the state. Eliminate the abode and the statutory residency trap goes away even if you spend time in NY.

Do expats pay state taxes after handling all this? Generally no, on foreign income earned post-departure. The state can’t reach your foreign income once domicile has cleanly shifted and no statutory residency trap remains. You’ll still file source-income returns if you have rental property or work performed in the state, but the worldwide income tax goes away.

California’s audit is more aggressive than New York’s in our experience, especially for high-income departures. The FTB sends out residency questionnaires several years after departure asking detailed questions about your departure. Forty pages, hundreds of questions, covering family location, real estate, banking, professional ties, social ties, charitable giving, club memberships, and time spent in California by year. Answering it honestly with good documentation is the path. Trying to evade it makes things worse.

New York’s audit tends to focus on the day-count for statutory residency and on whether “vacation” days in NY were really work days. They subpoena cell phone records, credit card records, and ride-share records to reconstruct day counts. We’ve seen audits where the difference between 183 days and 184 days was a single coffee purchase in Manhattan. Track your days obsessively if you’re moving from New York and plan to visit.

The clean departure also requires a destination. “I’m a digital nomad with no permanent address” doesn’t work for state tax purposes. You need a domicile somewhere, and that somewhere needs to be a real place with real ties. If you’re truly nomadic, establish Florida or South Dakota or Texas as your domicile of record with a registered mailing service, a license, voter registration, and banking. Without a clear new domicile, your old state will argue you never abandoned the old one.

Yes, expats can owe back state taxes for years they thought they’d already left if the state successfully argues they never actually broke residency. Do expats pay state taxes retroactively in these cases? Yes, plus penalties and interest, which can easily double the original bill. Do expats pay state taxes on multiple back years simultaneously when a residency audit goes against them? Often, because once one year is decided as a residency year, the state pulls in adjacent years too.

California is the most active state on retroactive residency claims. The FTB can audit residency for any open tax year, and the statute of limitations doesn’t start running on a return that was never filed. If you stopped filing California returns after moving abroad but California still considers you a resident, the statute never closes. You could be liable for ten or more years of unfiled returns.

The pattern we see is this: client moves abroad, stops filing California returns, no contact from FTB for three or four years. Then a residency questionnaire arrives in the mail. The questionnaire is detailed and asks about every aspect of the move. Client either ignores it or answers it incompletely. FTB issues a Notice of Proposed Assessment based on assumed residency. The notice covers all the years client didn’t file, with tax, interest, and penalties for each year. Client now owes six figures plus.

The fix is to engage proactively. If you moved abroad without a clean break, you have options. You can file the missing returns as resident returns and pay the tax, which closes the years and stops the interest from accumulating. You can argue residency was actually severed and provide documentation supporting nonresidency, which can succeed if the facts are strong. You can sometimes negotiate a partial-year resident filing for the departure year and nonresident filings for subsequent years.

What you can’t do is wait it out. Unfiled returns don’t expire. The FTB will eventually find you, and they have tools we used to think were ridiculous: data matching with federal returns (the IRS shares 1040 data with state revenue departments), credit reports, motor vehicle records from other states, real estate records nationwide, marriage and divorce records. If your federal return shows California-source rental income but no California return was filed, you’ll get a notice.

Penalties for non-filing in California can hit 25% of the tax owed (5% per month up to five months). Add interest at the state’s rate (currently around 7% to 8% annualized) compounded over multiple years, and the bill grows fast. Late-filed returns also lose access to certain credits and deductions that have to be claimed on time.

New York is more efficient at finding non-filers because of its data systems and the dense employer reporting in the state. If you worked for a New York employer who continued to report wages to New York after your departure, NY DTF will see it. We’ve had clients get non-filer notices within twelve months of a departure where they didn’t properly notify the employer to stop New York withholding.

The lesson is that if you suspect your departure wasn’t clean, addressing it proactively is much cheaper than waiting for the audit. Voluntary disclosure programs exist in California and New York that can reduce penalties significantly if you come forward before the state finds you. The penalty reduction often pays for several years of accountant fees and still saves money compared to fighting an audit later. We recommend a residency review for any client who left California or New York within the last five years and isn’t sure their departure was airtight.

The cleanest answer is Florida, Texas, or South Dakota. These are the three states most expats use as their pre-departure domicile, and each has a well-developed infrastructure for non-resident domiciliaries. Do expats pay state taxes from these states? No, because they have no state income tax. Do expats pay state taxes on income earned abroad if their US domicile is Florida? Also no. The answer to do expats pay state taxes flips from yes to no by changing the US state of record before the international move.

Florida is the most popular choice. Florida has no income tax, a clear domicile framework under Florida Statute §222.17 (the Declaration of Domicile), and significant existing infrastructure for non-resident retirees and snowbirds. You can establish Florida domicile by getting a Florida driver’s license, registering to vote in Florida, opening Florida bank accounts, filing a Declaration of Domicile with a Florida county clerk, and using a Florida address for tax and legal purposes. Many expats use a CMRA or virtual mailbox in Florida (services like Earth Class Mail and St. Brendan’s Isle do this) to maintain a Florida address while abroad.

Texas works similarly. No state income tax, easy driver’s license process, and well-established mail forwarding services in cities like Austin and Houston. Texas doesn’t require a Declaration of Domicile but the practical steps are the same: license, voter registration, banking, mail address. Texas attracts a lot of expats moving to Mexico and Central America because of geographic proximity.

South Dakota is the choice for true nomads. South Dakota requires only a single overnight stay to establish residency, and mail forwarding services in Sioux Falls handle the licensing, registration, and address infrastructure as a package. Companies like Americas Mailbox and Dakota Post specialize in this. South Dakota is popular with full-time RVers, sailors, and expat digital nomads who don’t want to set up a real Florida or Texas presence.

Nevada, Wyoming, Tennessee, Alaska, New Hampshire, and Washington also have no income tax (with caveats for New Hampshire and Washington on certain investment income). These work but are less commonly used because the support infrastructure is thinner.

The timing matters. You need to establish the new state domicile BEFORE leaving the US. If you move from California directly to Lisbon and try to claim Florida domicile after the fact, California will argue you went straight from California to Lisbon and never actually established Florida residency. The new state has to be real, with documented ties, before the international move.

Practical sequence: six to twelve months before the international move, fly to your chosen safe-harbor state and physically spend time there. Get a license. Open bank accounts. Set up a mailing address. Register to vote. File a Declaration of Domicile. Update all your accounts (IRS, employer, brokerage, retirement, banks, insurance, professional associations) to your new state address. Sell or transition out of your high-tax state property if possible. Document every step with dates and confirmation records. THEN make the international move.

Once you’re abroad, do expats pay state taxes if their US domicile is Florida? No, because Florida doesn’t tax income at all. The federal return continues, but the state side is gone. Even if you eventually return to the US, you can come back to Florida or any other state, and your years abroad won’t carry state tax liability. We’ve helped clients structure this move multiple times and the savings can be enormous. A New York City resident earning $400,000 a year who properly establishes Florida domicile before moving to London saves roughly $50,000 in state and city tax annually, compounding over a five-year overseas assignment. The cost of doing it right (a few thousand dollars in CPA fees, mailbox service, and travel) is recovered in the first month.