California's Exit Tax: What High Earners Need to Know Before Leaving the State
California’s top earners face the highest state income tax rate in the country, and concerns around a so-called “exit tax” have become increasingly common among executives, business owners, retirees, and investors considering relocation.
Some people associate the term with proposed wealth taxes aimed at former residents. Others use it to describe California’s aggressive residency audits after a move. In practice, both concerns stem from different parts of California tax law and enforcement.
For high earners, the financial consequences of a poorly structured departure can be substantial. Equity compensation, business sales, deferred income, and California-source assets may continue carrying tax implications long after a physical move occurs.
At Cooke Wealth Management, we help clients separate headlines from current law and evaluate how residency, timing, and asset structure affect a planned relocation. This article explains what California’s “exit tax” refers to, what it does not, and how the state’s tax authority can continue after departure.
What People Mean By “California’s Exit Tax”
The phrase “California exit tax” generally refers to three separate concepts that are often grouped together.
The first is the federal expatriation tax under Internal Revenue Code Section 877A, which applies only to individuals renouncing U.S. citizenship or certain long-term green card holders.
The second involves proposed California wealth tax legislation that would have continued taxing some former residents after leaving the state.
The third, and most relevant for most high earners, is California’s ongoing ability to tax California-source income and challenge residency changes through Franchise Tax Board (FTB) audits.
California does not currently impose a formal exit tax. However, residency enforcement rules and California-source income provisions can still create significant exposure after relocation.
Understanding which rules apply to a specific situation is often the starting point for effective planning.
AB 2088 and The 10-Year Rule That Almost Was
Much of the public discussion around California’s “exit tax” stems from Assembly Bill 2088, introduced in 2020.
The proposal would have imposed a 0.4% annual tax on worldwide net worth exceeding $30 million and included provisions that could have taxed former California residents for up to 10 years after departure.
AB 2088 never became law, and later versions, including AB 259 and AB 310, also stalled. A newer proposal, the 2026 Billionaire Tax Act, remains under consideration but has not been enacted.
For many high earners, the practical issue is less about proposed legislation itself and more about understanding California’s long-term policy direction.
Clients sometimes ask whether they should accelerate a move in anticipation of future law changes. Planning decisions are generally more effective when based on current law, documented timelines, and clearly structured residency changes rather than speculation about future legislation.
The Residency Audit: The Issue Most Movers Actually Face
For most departing residents, the larger concern is not a formal wealth tax but a residency audit.
The California Franchise Tax Board can review whether a claimed move was legitimate, and the burden of proof generally rests with the taxpayer. Residency audits can occur years after departure and may involve requests for extensive documentation.
Common audit triggers include:
Retaining a California home after claiming non-residency
Family members remaining in California for extended periods
Continuing remote work for a California-based employer
Ongoing California business interests or partnerships
Frequent return visits documented through financial or travel records
The combination of potential back taxes, penalties, and prolonged audit timelines often makes pre-move planning especially important.
A structured process can help establish a defensible residency transition and reduce inconsistencies that may later create scrutiny.
What California Still Taxes After You Leave
California’s top marginal income tax rate reaches 13.3% once the Mental Health Services surtax is included, according to Franchise Tax Board schedules.
While California residents are taxed on worldwide income, non-residents are taxed only on California-source income. The distinction is critical because California’s authority over certain income categories can continue indefinitely after departure.
California may continue taxing:
Income from California real estate
California-based partnership or S corporation income
Deferred compensation tied to California work
Certain stock options and RSUs earned during California residency
This issue frequently affects executives with equity compensation or business owners preparing for liquidity events.
For example, stock options exercised years after leaving California may still carry partial California tax exposure if the underlying work or vesting period occurred while the taxpayer was a California resident.
Planning often involves reviewing how each category of income is classified and whether major transactions should occur before or after a residency change.
What the FTB Looks For During a Residency Review
California does not rely on a strict day-count test to determine residency. Instead, the FTB applies a facts-and-circumstances analysis focused on domicile and ongoing ties to the state.
The review may consider:
Primary residence location
Family location
Driver’s license and voter registration
Banking and brokerage relationships
Medical providers
Vehicle registration
Business and professional ties
Common steps used to support a residency transition include:
Selling or legitimately renting out a California residence
Obtaining a driver’s license in the new state
Registering to vote outside California
Moving financial accounts and safe deposit boxes
Updating medical providers and mailing addresses
Registering vehicles in the destination state
Conversely, several factors may weaken a non-residency position:
Maintaining a California home for personal use
Using a California mailing address
Keeping substantial social or professional ties in California
Spending extended periods in the state each year
Continuing payroll or employment records tied to California
Documentation quality often becomes one of the most important factors during an audit. Timing and sequencing decisions may also affect the overall outcome.
What Determines Whether Your Exit Costs Five Figures or Seven
The financial impact of leaving California varies significantly depending on the structure of a household’s assets and income.
Key variables often include:
Wage versus investment income composition
Equity compensation structure
Ownership of California real estate
Timing of liquidity events or business sales
Quality of residency documentation
Destination state tax rules
For high earners, equity compensation frequently becomes one of the largest planning considerations. California generally maintains taxing authority over compensation tied to California workdays, even after a taxpayer relocates.
Business sales and concentrated capital gains may also create materially different outcomes depending on whether the transaction occurs before or after a fully established residency change.
How High Earners Often Stage the Move
Many clients begin planning six to twelve months before relocation. This timeframe can allow for coordination around equity exercises, residency documentation, and timing of major transactions.
The Legislative Analyst’s Office has reported that net outmigration has reduced California personal income tax growth in recent years, contributing to continued FTB focus on residency enforcement.
Because of this environment, contemporaneous documentation often matters as much as the move itself.
Clients frequently coordinate with CPAs, estate attorneys, and employers before departure to create a consistent timeline and record of intent. Even straightforward written communication regarding move dates and employment transitions may later become relevant during an audit review.
Some households also evaluate whether a calendar-year departure simplifies part-year residency treatment and tax reporting.
Why Orange County High-Earners Ask About Us This Question
Twenty Years of Watching California Clients Leave (And Stay)
Cooke Wealth Management has worked with Orange County families for more than two decades, including executives, physicians, business owners, retirees, and households managing concentrated equity positions.
Many clients considering relocation are navigating residency planning for the first time and are unfamiliar with California’s audit framework or California-source income rules.
As a fee-only fiduciary firm, our role is to help coordinate the wealth management side of a transition alongside outside tax and legal professionals.
This may include:
Pre-move planning discussions with CPAs
Equity compensation review
Investment account transitions and cost-basis coordination
Estate planning reviews related to residency changes
Retirement and Social Security planning
Ongoing investment management after relocation
John Cooke and Juliette Cooke work with clients across different stages of wealth accumulation and retirement planning, often coordinating with multidisciplinary advisory teams during more complex transitions.
Leaving California Well is Usually About Planning, Not Paperwork
For most high earners, the financial consequences of leaving California are shaped less by a single “exit tax” and more by residency classification, California-source income rules, and timing decisions made before the move occurs.
A structured planning process can help households evaluate documentation, sequencing, and tax coordination well before a relocation becomes final.
At Cooke Wealth Management, we work with clients considering a move out of California by coordinating investment management and financial planning decisions alongside outside legal and tax advisors.
Frequently Asked Questions
Does California currently have an exit tax?
No. California has not enacted a formal exit tax as of 2026. Previous proposals such as AB 2088 and AB 259 did not become law.
How long can California audit residency after I leave?
The FTB generally has four years to audit a filed return, with longer periods applying in certain situations involving substantial understatement or non-filing.
Does moving to Texas, Nevada, or Florida eliminate California taxes?
Moving to a no-income-tax state removes taxation in the destination state but does not eliminate California’s authority over California-source income.
What happens to stock options or RSUs after leaving California?
Equity compensation tied to California work or vesting periods may remain partially taxable by California even after relocation.
Should I keep my California home after moving?
Retaining a California property can become a factor in residency reviews, particularly if the home remains available for personal use rather than functioning as a legitimate third-party rental.
How far in advance should I start planning a move?
Many households begin planning six to twelve months before relocation to allow time for documentation, account transitions, and coordination around major financial events.