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Expat Retire
Guide
Before you leave

The state you leave from matters more than the country you move to.

Moving abroad doesn't automatically end your state tax obligations. Five states are notoriously "sticky" — they keep asserting taxing authority based on domicile, which doesn't change just because you physically left.

The fix is straightforward if you do it before you go. Untangling it after the fact can take years.

Kelly Milligan, founder of Expat Retire Guide

By

Updated · Published

Educational content. State residency rules are fact-specific, especially for California — if you have significant assets, real property, or business interests in a sticky state, get personalized advice before your move.

Section 01 · The two lists

Sticky vs. clean-break states.

Sticky — may keep taxing you
  • CaliforniaMost aggressive
  • VirginiaNeed another US domicile
  • New Mexico
  • South Carolina
  • New York
No income tax — clean break
  • Florida
  • Texas
  • South Dakota
  • Nevada
  • Wyoming

Tennessee, New Hampshire, Alaska, and Washington also have no broad income tax, but rarely fit the retiree-abroad use case. Compare TX, FL, SD, NV, and WY for expat domicile →

If you're in one of the sticky five

Establish domicile in a no-income-tax state first. Then depart internationally. Easy to plan in advance. Expensive (and sometimes years-long) to untangle after. Which state to pick →

If you're not in a sticky state

Most states will release you when you establish domicile abroad. No Florida or Texas detour needed — just don't keep a home in your old state, file a part-year return for the year you leave, and update your address and registrations before you go.

Section 02 · The concept

What "domicile"
actually means.

Domicile isn't just where you live — it's the state you consider your permanent home, the one you intend to return to. You can be physically absent for years and still be domiciled in California if California concludes you didn't truly intend to leave.

That's the whole game. Sticky states look at your ties — property, accounts, registrations, family location — and decide whether you've actually severed your domicile or just gone on a long trip.

You can leave the state physically and still owe it taxes for years.

Especially in California, the burden of proof is on you. Without a clear, documented break, the state's default position is that you're still a resident.

Section 03 · The pre-move checklist

How to establish
domicile in a no-tax state.

Florida, Texas, Nevada, Wyoming, and South Dakota each have slightly different requirements, but the playbook is broadly the same.

  1. Move physically, even briefly

    Spend real time in the new state before you depart internationally — weeks, not days. The longer the better. South Dakota and Florida are the most welcoming to people who plan to spend most of the year abroad afterward.

  2. Get a driver's license in the new state

    Surrender your old one. This is the single most-cited piece of evidence in residency disputes.

  3. Register to vote

    Update your federal voter registration to your new state address. You'll vote absentee from abroad after this.

  4. Register your vehicle (if applicable)

    If you're keeping a US vehicle, register it in the new state. If you're selling everything, skip this.

  5. Open a bank account in the new state

    Move your primary banking relationship to a bank with branches in your new state. Online-only banks are fine; what matters is the documented address.

  6. Establish a permanent address

    Buy a small condo, sign a lease, or use a Florida/South Dakota mail-forwarding service designed for full-time travelers (Escapees RV Club in TX, America's Mailbox in SD, St. Brendan's Isle in FL). Mail forwarders alone aren't always enough — the more substantive the address, the better.

  7. Sell or rent your old-state home

    Keeping a residence in California or New York while claiming to live elsewhere is the #1 way to lose a residency audit. Rent it out at arm's length or sell it.

  8. File a final-year part-year return

    For the year you leave, file a part-year resident return in your old state showing the date your residency ended. This puts the state on notice and starts the statute of limitations clock.

Leaving California, NY, or another sticky state?

State residency planning is one of those things that's cheap to do right and very expensive to do wrong. TFX handles part-year state returns for $160 each, and an expat CPA can spot residency-audit risks before they become a problem.

Get a free consult with TFX
FAQ

Frequently asked questions

If I move directly from California to Portugal, am I still a California resident?
California's default answer is yes — you're presumed to be a resident until you can prove you've changed domicile. Moving abroad doesn't automatically count, especially if you keep a home, bank accounts, or family in California. Most retirees moving from California establish domicile in Florida, Texas, Nevada, or another no-tax state first.
How long do I need to live in Florida (or another no-tax state) before moving abroad?
There's no fixed minimum, but the longer the better — and what you do matters more than how long. A month with a Florida driver's license, voter registration, vehicle registration, and bank account is more convincing than six months of just renting an Airbnb. Aim for at least 30–90 days with concrete documentation.
Can I just use a mail-forwarding service in Florida or South Dakota?
Mail-forwarding services exist precisely for this purpose and are widely used by full-time travelers and expats. They're stronger evidence in South Dakota and Florida (where the state explicitly recognizes them) than in states with stricter residency tests. They're rarely sufficient on their own — pair them with a driver's license, voter registration, and bank account in the same state.
I'm not in a sticky state. Do I still need to plan?
Less, but yes. Most states will release you when you establish domicile abroad — but you still need to file a part-year return for the year you leave, and you still need to update your address, voter registration, and any state-issued licenses. Don't keep a primary residence in the old state if you can avoid it.
What if I want to keep my California house and rent it out?
Rental property in a state isn't enough on its own to make you a resident — but combined with other ties (bank account, family, voter registration), it can tip a residency audit against you. Make the rental clearly arm's-length: a property manager, a real lease, a market rent. Don't list it as your address anywhere.
What about state taxes in the country I move to?
Most countries don't have state-level income tax in the way the US does. Switzerland and Germany are exceptions (cantons and Länder). For most retirees moving to Portugal, Mexico, Spain, or similar destinations, you'll only deal with one country's national tax system plus the US.
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