Yes, most expats still owe state income taxes while living abroad, unless their last U.S. home was in a state without an income tax or they took deliberate steps to end their residency and domicile before leaving. The federal government taxes U.S. citizens on worldwide income no matter where they live, and about 40 states apply their own residency and domicile rules on top of that. Whether you keep filing depends far less on your plane ticket than on which state you left and what you did before you left it.
Why Leaving the Country Doesn’t End State Tax
State tax authorities distinguish between two things: residence and domicile. Your residence is wherever you physically live at a given moment. Your domicile is the one place you treat as your permanent home, the place you intend to return to when you’re away. You can have several residences but only one domicile, and that domicile follows you until you deliberately replace it with a new one. Most states tax their domiciliaries on worldwide income, so if you never break domicile, moving to Lisbon or Tokyo changes nothing about your state filing obligation.
Statutory residency is the second hook. Many states will treat you as a full-year resident if you keep a permanent place of abode there and spend more than 183 days in the state during the tax year. Full-year expats rarely come near 183 days, but the “abode” side of the test can catch people who thought they had left. A vacant apartment, your name on a family member’s lease, or a furnished vacation home can all count as a permanent place of abode in a state auditor’s eyes. Utility bills, mail delivery, and lease terms become evidence.
States With No Income Tax
If your last U.S. home was in a state without an income tax, the answer is simple: no state return, no state liability on wages. Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming impose no tax on wage or salary income. New Hampshire only recently joined that group. Its interest and dividends tax was repealed for tax years beginning after December 31, 2024, so from 2025 forward New Hampshire residents owe no state income tax at all.1NH Department of Revenue Administration. Interest and Dividends Tax
Washington is the one exception worth flagging. It doesn’t tax wages, but it does tax long-term capital gains on the sale of stocks, bonds, and similar assets at 7% on the first $1 million of taxable gains and 9.9% above that threshold, effective for tax year 2025 returns filed in 2026.2Washington State Department of Revenue. New Tiered Rates for Washingtons Capital Gains Tax Keep Washington domicile and sell a large portfolio from overseas, and you can still generate a state tax bill despite earning no wages.
The Sticky States
Some states make leaving genuinely difficult. Tax practitioners commonly single out five: California, New Mexico, New York, South Carolina, and Virginia. These states presume you remain a taxable resident until you prove otherwise with substantial evidence, and their standards for what counts as proof are demanding.
New York evaluates domicile using five primary factors: where you keep a home, your active business involvement, how you spend your time, the location of items “near and dear” to you such as heirlooms and personal valuables, and where your family lives.3New York State Department of Taxation and Finance. Nonresident Audit Guidelines A furnished Manhattan apartment, a boat in storage, or an active professional license can all count against you. California’s Franchise Tax Board takes an equally broad view, treating anyone present in the state for other than a “temporary or transitory purpose” as a resident.4Franchise Tax Board. Residents
California does offer a safe harbor for people who leave under an employment-related contract. If you are outside California for an uninterrupted period of at least 546 consecutive days, the state treats you as a nonresident, provided your return visits stay under 45 days in any tax year, your intangible income stays below $200,000 annually, and the move wasn’t primarily to avoid state tax.5Franchise Tax Board. 2024 Guidelines for Determining Resident Status – Publication 1031 The 546-day clock resets if you come back too long or too often.
Most other income-tax states are less aggressive. Some simply require you to be outside their borders for a full tax year. Others look mainly at physical presence without the lifestyle investigation New York or California conducts. Leaving a non-sticky state with a clean break and a foreign address is generally enough. Leaving a sticky state may take months of planning and careful documentation.
Federal Expat Tax Breaks Usually Don’t Help at the State Level
This is where expats get blindsided most often. The federal Foreign Earned Income Exclusion lets qualifying taxpayers exclude a significant portion of foreign earnings from their federal return. Many people assume that exclusion carries over to their state return. It usually doesn’t. Most states that tax expat income start from federal gross income before the exclusion and adjust from there. If your state still treats you as a resident, you can owe state tax on income the IRS already let you exclude.
Tax treaties have the same limitation. The United States has income tax treaties with dozens of countries that can reduce or eliminate double taxation federally. Those treaties don’t cover state income taxes.6Internal Revenue Service. State Income Taxes Rely on a treaty to shield you from double taxation, and that protection stops at the federal line.
Foreign tax credits run into a similar wall. Federally, you can generally claim a credit for income taxes paid to a foreign government. Some states allow a credit for foreign taxes paid; many do not. California, for one, doesn’t let you apply the federal foreign tax credit against your California tax. In the worst case you pay the foreign country, then the IRS (with credits or exclusions softening the blow), and then your state with no offset at all. That reality alone makes breaking state residency one of the highest-value moves an expat can make.
Income From Your Old State After You Leave
Cutting residency and domicile doesn’t necessarily end your state filings. Income sourced to a state remains taxable by that state no matter where you live. For expats the common sources are rental income from property in the state, business income from a partnership or LLC operating there, and capital gains from selling in-state real estate.7Internal Revenue Service. Nonresident Aliens – Sourcing of Income Rent your former New York home while living in Berlin, and you’ll owe New York tax on the rental profit and need to file a non-resident return.
Intangible assets like stocks, bonds, and mutual funds work differently. For non-residents, gains on the sale of intangibles are typically sourced to your state of domicile at the time of sale, not to the state where your brokerage account sits.8Franchise Tax Board. FTB Pub 1100 – Taxation of Nonresidents and Individuals Who Change Residency Establish domicile outside the United States properly, and your portfolio gains shouldn’t trigger a non-resident filing in your old state. Fail to break domicile, and those same gains stay fully taxable there.
How to Actually Sever State Residency
Breaking residency takes more than a plane ticket. State tax authorities want to see a clear, permanent shift in your center of life, and they want documents to back it up. None of these steps alone guarantees you’ll survive an audit, and skipping any of them makes surviving one much harder.
- Give up your dwelling. Sell your home, terminate your lease, or remove your name from any property that could be classified as a permanent place of abode. Keeping a furnished apartment “just in case” is one of the fastest ways to remain a statutory resident.
- Change your official records. Surrender your state driver’s license and get one from your new country where possible. Update or cancel your voter registration. Change the address on your federal tax return to your foreign address.
- Move your financial life. Close local bank accounts and open new ones abroad or with an institution that doesn’t tie you to the old state. Update brokerage, insurance, and retirement account addresses.
- Relocate personal property. Move furniture, vehicles, valuables, and sentimental items to your new home. New York specifically looks at where you keep items “near and dear” to you, and other states use similar logic.
- File a part-year return. On your final state return, file as a part-year resident with your exact departure date and new foreign address. That creates a paper trail showing the year you formally ended residency.9Franchise Tax Board. Part-Year Resident and Nonresident
- Build a paper trail abroad. Keep foreign lease agreements, moving company invoices, overseas utility bills, and employment contracts. The more mundane the evidence, the more persuasive it tends to be in an audit.
Consistency matters as much as any single step. If your driver’s license says London and your voter registration still says Los Angeles, an auditor will notice. Every document should tell the same story: you left, you built a life elsewhere, and you don’t intend to return.
What Happens If You Get It Wrong
Sticky states audit former residents who switch from resident to non-resident filing, or who stop filing entirely. These audits usually begin within two to three years of the change and go deep. Auditors request credit card statements to track where you shop and eat, cell phone records to see where you spend time, and social media posts that suggest you’re still living your old life. A check-in at your old gym or an Amazon delivery to a state address can become evidence.
New York’s domicile audits are among the most intensive. Auditors physically visit residences, catalog the contents of closets, and note which home has the better furniture and personal items.3New York State Department of Taxation and Finance. Nonresident Audit Guidelines California’s Franchise Tax Board has the resources to pursue former residents for years, especially high earners. Lose a residency audit and you owe the full tax for every year in question plus interest and late-payment penalties, which across states typically run 0.5% to 10% per month on the unpaid balance.
There’s a less obvious consequence in states with individual health insurance mandates. California requires residents to maintain qualifying coverage or pay a penalty. For 2025 (reported on the 2026 return), that penalty can be $950 per uninsured adult and $475 per child, or 2.5% of household income above the filing threshold, whichever is higher.10Franchise Tax Board. Health Care Mandate – Personal An exemption exists for citizens living abroad, but only if California recognizes that you’ve left. If the state still considers you a Californian, the health insurance penalty can land on top of the income tax bill. Massachusetts, New Jersey, and Rhode Island have similar mandates with their own penalty structures.
The pattern across sticky states is straightforward: they have the tools and the motivation to enforce their residency rules, and the cost of an incomplete break is always higher than the cost of doing it right the first time.