Leaving California for Spain: Breaking Residency

Moving out of California is easy. Proving you left, to California’s satisfaction, is the part people underestimate.

The Franchise Tax Board does not treat a forwarding address as an answer. It applies a facts and circumstances test, and the burden of proof sits with you rather than with the state.

This matters more on a move abroad than on a move to Nevada. Leaving for Spain often coincides with a large one-time event: selling a house, exercising options, or converting to a Roth. If California still counts you as a resident that year, it taxes that event in full.

What follows is general information about how the rules work. It is not advice about your own move, and it is not a method for avoiding California tax. It is about getting the answer right and being able to show your work.

Resident and domicile are not the same thing

California uses both words, and they mean different things.

Under Revenue and Taxation Code section 17014, you are a resident in two situations. The first is being in California for other than a temporary or transitory purpose. The second catches more people: being domiciled in California while outside the state for a temporary or transitory purpose.

Domicile is the narrower idea. The FTB describes it in Publication 1031 as the place you voluntarily establish yourself and your family, with the present intention of making it your true, fixed, permanent home.

So you can be resident in more than one place at once. You can only have one domicile. And you keep your California domicile until you both abandon it and acquire a new one somewhere else.

That second half is the trap. Leaving is not enough on its own. You have to land.

The burden is on you

California puts the burden of proving a change of domicile on the taxpayer. The FTB’s own technical manual goes further. Where doubt remains after the facts are in, domicile is found not to have changed.

Read that as a drafting instruction. A close case is not a coin flip. A close case is a loss.

What the FTB actually looks at

There is no points system and no single decisive fact. The state board decision in Appeal of Stephen Bragg supplies the factor list the FTB still works from, and Publication 1031 carries substantially the same list.

The recurring factors include the following.

Where your residential real property is, and what it is worth.
Days spent in California against days spent elsewhere, and the purpose of each trip.
Where your spouse and children live, and where the children attend school.
Bank and brokerage accounts, and where checking and credit card activity originates.
Where your doctors, dentists, accountants and attorneys are.
Professional licenses and business interests.
Social, religious and professional memberships.
Driver’s license, vehicle registration, voter registration and whether you actually voted.
The homeowner’s property tax exemption.
Where you file returns and what residence you claim on them.

The FTB weighs the quality of these connections rather than counting them. Its manual is blunt about the paperwork ones. Changing your voter registration, or stating that you intended to become a resident elsewhere, is described as a mere formalism and is not controlling.

That cuts both ways, and this is the part people misread. Updating the formalities earns you very little. Keeping them is direct evidence that you meant to come back.

The safe harbor, and why it rarely helps a retiree

There is one bright line in an otherwise grey area, and most people moving to Spain cannot use it.

Section 17014(d) provides a safe harbor for someone domiciled in California who is absent under an employment-related contract for an uninterrupted period of at least 546 consecutive days. That is roughly eighteen months. Return visits of not more than 45 days in a taxable year are disregarded.

Two conditions break it. The safe harbor fails if income from intangibles exceeds $200,000 in any taxable year the contract is in effect. It also fails if the principal purpose of the absence is avoiding California income tax.

The words that matter are employment-related contract. A retiree has no contract. Neither does someone taking a sabbatical, or relocating on their own initiative, or living off a portfolio. For most Americans moving to Spain the safe harbor is simply unavailable, and the answer falls back to facts and circumstances.

One related rule runs the other way. Section 17016 presumes residency for anyone in California more than nine months in a year. That presumption is rebuttable. There is no converse presumption, so spending under nine months in the state proves nothing by itself.

The year you move

In the year of the move you are generally a part-year resident. You file Form 540NR.

The principle is straightforward. You are taxed on all income from all sources while a resident, and only on California-source income while a nonresident.

The arithmetic is less kind. California computes the tax on your total income as though you were a full-year resident, derives an effective rate from that, and applies the rate to your California taxable income. So your worldwide income still sets the rate for the whole year, including the months after you left.

One more wrinkle catches people who have already started thinking in federal terms. California does not conform to the federal foreign earned income exclusion. Income you excluded on Form 2555 is added back on the California return. That matters for the resident part of the move year.

What California can still tax after you go

Becoming a nonresident does not end your relationship with the FTB. California keeps the right to tax California-source income.

That covers gains on California real property, rent from it, income from a business carried on in the state, and wages for services performed there. It also reaches through partnerships, S corporations and LLCs to their California-source items.

Equity compensation follows the work rather than the person. Nonstatutory options are generally sourced on California workdays between grant and exercise. Restricted stock units are generally sourced on workdays between grant and vest. So a move does not cleanly cut off compensation you earned while working in California.

Gains on intangibles are different. They are generally sourced to where you live when you sell.

Retirement income is protected, with a catch

Here is the genuinely good news, and the trap sitting inside it.

Federal law preempts the states. Under 4 U.S.C. section 114, enacted in 1996, no state may tax the retirement income of an individual who is not a resident or domiciliary of that state. California’s own section 17952.5 matches it, and Publication 1031 states plainly that nonresidents are not taxed on pensions received after 1995.

The protection covers qualified plans, 403(b) contracts, SEPs, IRAs, eligible 457 plans and governmental plans. Certain nonqualified deferred compensation is covered too, but only where it is paid as substantially equal periodic payments over life or over a period of at least ten years.

Now the catch, and it is a large one. The statute says resident or domiciliary. Someone who moves to Spain but never sheds California domicile is still a domiciliary. The federal shield does not reach them.

So the domicile question is not academic. It decides whether your IRA distributions sit outside California’s reach.

What the shield does not cover is worth listing: lump sums from nonqualified plans, stock options, severance, bonuses, and California-source wages, business income or real property of any kind.

Is there a California exit tax?

No. There is no California exit tax and no California wealth tax in law today.

The idea circulates because bills have been introduced. AB 2088 in 2020 proposed a wealth tax reaching departing residents for several years after they left. AB 259 followed in the 2023 to 2024 session. Neither became law, and AB 259 died in January 2024.

What people usually mean by exit tax is the existing machinery: continued taxation of California-source income, the effective rate method in the move year, and residency audits. That is enough to plan around without inventing a new tax.

How long California can come back

The normal assessment window is four years from the return’s due date or the date you filed, whichever is later. It stretches to six years where more than a quarter of gross income was omitted.

The important one is the third. Where no return was filed, there is no statute of limitations at all.

That is the quiet risk in a badly handled departure. Someone who moves abroad and simply stops filing has not closed the year. They have left it open indefinitely.

Filing a final part-year return does more than settle the tax. It starts the clock.

What breaking domicile actually looks like

The steps are unglamorous, and the point of all of them is evidence.

Sell the California home, or at least stop using it as a residence and drop the homeowner’s exemption.
Move the household: spouse, children, pets and belongings. Keep the shipping manifest.
Complete the Spanish side properly. Get the NIE, register your address, and file Spanish returns as a resident.
Surrender the California driver’s license and get a Spanish one. Deal with the vehicles.
Cancel voter registration, and do not vote in a California election afterward.
Move your professional advisers, your doctors and your day to day banking.
Keep a day count log, with boarding passes, for every visit back.
File the final Form 540NR, and stop filing as a resident.

None of these is decisive alone. Together they are the record you will need if anyone asks, and the time to assemble it is while it is happening rather than three years later.

Frequently Asked Questions

Does moving to Spain automatically end my California residency?

No. California asks whether you abandoned your California domicile and established a new one. Physical departure is one fact among many. Keeping a home, a license or a voter registration in California all count against you.

Will California tax my IRA once I live in Spain?

Federal law bars states from taxing the retirement income of someone who is not a resident or domiciliary. The protection depends on shedding domicile, not merely on living abroad. So the domicile analysis decides the answer.

Does the 546-day safe harbor apply to me?

Only if your absence is under an employment-related contract. It does not help a retiree or someone relocating on their own initiative. It also fails if intangible income crosses the statutory threshold in a year the contract is running.

What if I keep my house in California?

You can, and people do. But a retained home available for your own use is one of the heaviest factors weighing against a change of domicile. If you keep it, the rest of the picture has to be that much clearer.

Working With a Cross-Border Advisor

The California question and the Spanish question are usually decided in the same twelve months, and they interact.

The work here is concrete. We fix the departure date against the Spanish 183-day count and the California move year. We identify which transactions belong before residency changes on either side. We check whether the federal retirement income shield will actually be available to you, which turns on domicile. Then we make sure the final California return and the first Spanish return tell the same story.

Cross Border Wealth Advisors is a fee-only fiduciary firm serving US citizens living in or moving to Spain. I hold both the CFP® certification and an Enrolled Agent license, so the planning and the returns get decided together.

Everything above is general information, not advice about your situation. A retained California home, a California business, or a large liquidity event in the departure year are all reasons to bring in a California tax attorney as well.

To talk it through, book an introductory conversation at cbwealthadvisors.com or email info@cbwealthadvisors.com.

Sources

Disclosures

This article is general educational information published by Cross Border Wealth Advisors, a company of Gersten Financial Planning Inc., an investment adviser registered with the State of California (CRD 309890). It is not investment, tax, legal or immigration advice.

Residency is decided on the facts of each case, and reasonable people reach different conclusions on similar facts. Rules and figures change, and the ones here are stated as of the date above. Cross Border Wealth Advisors is fee-only and receives no commissions. Registration does not imply a certain level of skill or training.

Please read the full article disclosures, which apply to everything published here.

Leaving California for Spain: Breaking State Residency