If you move out of California, you may still have to pay California income tax, and the answer turns on two separate questions. First, did you actually stop being a California resident in the eyes of the Franchise Tax Board (FTB)? Second, even if you did, do you still earn income that California considers sourced to the state? A clean move ends resident-level taxation on your worldwide income, but California can keep taxing wages for work performed in the state, rental income from California property, gains on California real estate, your share of California business income, and stock options or RSUs tied to work you did before you left. Getting this wrong is expensive: the top marginal rate is 13.3%, and a fraud finding in a residency audit adds a 75% penalty on top of the tax.
When California Still Treats You as a Resident
California taxes residents on income from everywhere in the world. The state defines a resident as anyone present in California for other than a temporary or transitory purpose, or anyone domiciled in California who happens to be outside the state temporarily.1Franchise Tax Board. Residents Part-Year and Nonresident Your domicile is your true, permanent home, the place you intend to return to whenever you leave. You can only have one, and it stays put until you actively replace it with a new one somewhere else.
To decide where your domicile really sits, the FTB weighs your California ties against your ties elsewhere. This is often called the closest connections test, and it looks at the whole shape of your life.2Franchise Tax Board. FTB Publication 1031 Guidelines for Determining Resident Status The factors that matter most:
- The location of your primary home and any other real property you own
- Where your spouse or registered domestic partner and minor children live
- Where you bank and where your day-to-day financial activity originates
- The state that issued your driver’s license, where your vehicles are registered, and where you vote
- Where your doctors, dentists, accountants, and attorneys are
- Memberships in places of worship, clubs, and professional associations
- The permanence of any work assignments in California
Strength matters more than count. Keeping your primary residence in California while picking up a Texas driver’s license won’t move your domicile; the house outweighs the license.
The Day-Count Rules
Spend more than nine months of a tax year in California and the state presumes you are a resident. You can rebut that presumption, but the burden is on you.3California Legislative Information. California Revenue and Taxation Code 17016
The rule cuts the other way at the low end. If you spend no more than six months total in California during the year, are domiciled elsewhere, and maintain a permanent home in your new state, California regulations generally treat you as being present only temporarily. You can own a California vacation home and keep a local bank account for personal expenses without breaking this. What you cannot do is work or run a business while you’re in the state; earning money in California during those visits pulls you back out of the safe treatment.4Legal Information Institute. California Code Regs Tit 18 17014 – Who Are Residents and Nonresidents
What an Actual Move Looks Like
Changing your domicile requires both a physical relocation and a genuine intent to make the new state your permanent home. Doing one without the other does not work, and the FTB is skilled at spotting half-hearted moves.
The Substantive Steps
Sell your California home, or at minimum rent it out to a third party on a long-term lease. Leaving an empty California house “just in case” is one of the easiest ways to lose a residency audit. Buy or lease a home in your new state. Move your family with you; if your spouse or children remain in California, the FTB will read that as strong evidence your domicile hasn’t actually changed. Take your most valued personal belongings with you: heirlooms, art, and anything you would keep in a permanent home.
The Administrative Steps
Get a driver’s license in your new state and surrender the California one. Register your vehicles in the new state. Register to vote there and cancel your California registration. Close your California bank accounts and open local ones. Transfer any professional licenses. Switch to doctors, dentists, and other service providers near your new home. Update your address with the IRS, the post office, and every financial institution. Join local organizations wherever you now live.
Keep a Day-by-Day Log
This is the step most people skip and the one that matters most under audit. Track where you are every day. The FTB’s audit team reconstructs your physical location using credit card statements, bank transactions, airline records, and even veterinary bills, so your log has to be consistent with that paper trail.5Franchise Tax Board. Residency and Sourcing Technical Manual Record travel dates in and out of California, the reason for each visit, and where you stayed. A contemporaneous log beats one you reconstruct years later.
The 546-Day Safe Harbor for Employment Contracts
If you’re leaving California under an employment-related contract, there is a specific safe harbor. A California-domiciled individual who is absent from the state under such a contract for at least 546 consecutive days (roughly 18 months) is treated as a nonresident during the absence.2Franchise Tax Board. FTB Publication 1031 Guidelines for Determining Resident Status
Two things disqualify you. You cannot have more than $200,000 in intangible income (interest, dividends, and similar investment income) in any tax year the contract is in effect, and the primary purpose of the absence cannot be to avoid California income tax. Return visits to California of 45 days or less in any tax year count as temporary and don’t break the consecutive-day count. A spouse or registered domestic partner who accompanies you for the full 546 days qualifies as well.
California-Source Income You Still Owe Tax On
Changing your domicile does not end your California tax story. The state taxes nonresidents on any income that originates within California.6Franchise Tax Board. Part-Year Resident and Nonresident Several categories are worth knowing before you assume you’re done.
Wages for Work Physically Done in California
If you live elsewhere but perform work inside California, whether commuting across the border, flying in for meetings, or spending a week at a San Francisco office, the wages tied to those California workdays are California-source income. The state uses a ratio: California workdays divided by total workdays, applied to your total compensation. If you work remotely from your new state and never set foot in California, your wages are generally not California-source.
Self-Employment and Contractor Income
Self-employed workers face a different rule. California sources their income to where the customer receives the benefit of the service, not where the work is done. A web designer in Nevada building a site for a California-based company has California-source income because the client benefits from the work in California.
Rental Income and Real Estate Sales
Rental income from California property is taxable by California no matter where you live. So are capital gains on the sale of California real estate, even years after you leave.7Franchise Tax Board. FTB Pub 1100 Taxation of Nonresidents and Individuals Who Change Residency There is also a cash-flow trap at closing: when a nonresident sells California real property, escrow must withhold 3⅓% of the sales price and send it to the FTB as a prepayment of the seller’s tax. On a $900,000 sale, that’s roughly $30,000 held back. You claim credit for the withholding on your California return and get any excess refunded, but the money is gone at closing. On installment sales, the buyer keeps withholding 3⅓% of the principal portion of each payment.8Franchise Tax Board. 2026 Instructions for Form 593 Real Estate Withholding Statement
Pass-Through Business Income
Your share of income from a California-based partnership, S corporation, or LLC is taxable by California to the extent it derives from California sources.7Franchise Tax Board. FTB Pub 1100 Taxation of Nonresidents and Individuals Who Change Residency Moving does not change the sourcing of the entity’s income; if the business operates in California, your distributive share keeps flowing to a California return.
Stock Options and RSUs
Deferred equity compensation is where California’s reach runs longest. Stock options and RSUs earned for services performed in California remain partially taxable by California after you leave. The FTB allocates the income using a time-based ratio: California workdays divided by total workdays from the grant date (options) or purchase date (RSUs) through the exercise or vesting date.9Franchise Tax Board. Publication 1004 Equity-Based Compensation Guidelines Options granted years ago, before a move was even on the table, can still produce a California tax bill when they finally vest or are exercised.
Retirement Income Is Off Limits to California
One important boundary: federal law prohibits any state from taxing the retirement income of a nonresident.10Office of the Law Revision Counsel. 4 US Code 114 – Limitation on State Income Taxation of Certain Pension Income Once you’ve established domicile elsewhere, distributions from your 401(k), traditional IRA, SEP-IRA, 403(b), government pension, or military retirement pay are not subject to California tax, regardless of where the account was earned or funded. A teacher who spent 30 years in California and retired to Oregon owes California nothing on those pension checks. The catch is that you must genuinely be a nonresident. If the FTB successfully argues you never left, the protection disappears and the retirement income becomes taxable again as worldwide income of a California resident.
Avoiding Double Taxation in the Move Year
In the year you move, you’ll likely owe some tax to both California and your new state on overlapping income. California handles this through Schedule S, the Other State Tax Credit. As a part-year resident, you can claim a credit for income taxes paid to another state on income California also taxes, as long as that income has a source in the other state under California law.11Franchise Tax Board. 2025 Instructions for Schedule S Other State Tax Credit Attach a copy of the other state’s return to your California filing.
Once you’re a full nonresident, the credit narrows sharply. California only allows nonresidents to claim it if they are residents of Arizona, Guam, Oregon, or Virginia. If your new home is anywhere else, check that state’s rules; most offer a reciprocal credit on their own returns for tax paid to California on the same income.
Filing After You Leave
For the year you move, you’re a part-year resident, and you file Form 540NR. On that return you report all income from all sources for the portion of the year you were a California resident, plus only your California-source income for the portion after your domicile changed.7Franchise Tax Board. FTB Pub 1100 Taxation of Nonresidents and Individuals Who Change Residency Mark the return clearly as your final filing as a resident. That notifies the FTB of the change and creates a clean record for any later audit.
In future years, you still have to file a California nonresident return if your California-source income clears certain gross income thresholds. For 2025, a single nonresident under 65 with no dependents must file if California gross income exceeds $22,941; for a married couple filing jointly, both under 65, the threshold is $45,887.12Franchise Tax Board. 2025 540NR Booklet The numbers adjust yearly, so check the current 540NR instructions.
Residency Audits and What They Cost If You Lose
The FTB actively audits people who claim to have left, and it pays particular attention to high-income taxpayers who move to no-income-tax states like Nevada, Texas, and Florida. Auditors reconstruct your physical presence from credit card and bank statements, airline records, ATM transaction locations, and veterinary records for your pets.5Franchise Tax Board. Residency and Sourcing Technical Manual
The FTB generally has four years from the date you filed a return to issue an assessment. If you didn’t file a California return for a year the agency believes you should have, there is no time limit at all. The same unlimited window applies if the IRS adjusts your federal return and you don’t tell the FTB.13Franchise Tax Board. Your Tax Audit
If the FTB determines you owe back taxes, the penalties stack quickly. An accuracy-related penalty for negligence or a substantial understatement adds 20% on top of what you owe. A fraud finding, meaning intentional misrepresentation of residency to avoid tax, brings a 75% penalty on the underpayment, plus interest from the original due date.14Franchise Tax Board. FTB 1024 Penalty Reference Chart On a large assessment, the fraud penalty alone can exceed the original tax. A clean final return, a real move, and a detailed day log are the cheapest protection against that outcome.