Can California Tax You After You Leave? The Federal Fight Over State Wealth Taxes

What happens when a state decides to tax your assets after you pack up and leave? At Dixson Tax Resolution Services LLC, we frequently help taxpayers in high-tax areas like San Diego navigate complex residency audits, especially as many relocate to states like Texas or Florida.

That exact scenario is fueling a massive political showdown over California’s proposed 2026 Billionaire Tax Act. This ballot initiative would levy a one-time 5% tax on the worldwide net worth of billionaires who claim California residency as of January 1, 2026.

While supporters claim it will fund healthcare, critics argue it targets individuals who no longer live there. Now, Congress is stepping in.

Understanding the 2026 Billionaire Tax Act

If voters approve the measure for the November 2026 ballot, it would:

  • Impose a one-time 5% excise tax

  • Target taxpayers with a net worth of $1 billion or more

  • Use January 1, 2026 as the residency benchmark

  • Apply to worldwide assets

According to the California Legislative Analyst’s Office (LAO), the proposal could generate “tens of billions of dollars” starting in 2027. However, the LAO also cautioned that wealthy taxpayers relocating to places like Dallas or Orlando could trigger a massive drop in ongoing state income tax revenue.

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Federal Pushback: The Keep Jobs in California Act

To block retroactive post-departure taxation, U.S. Representative Kevin Kiley introduced the Keep Jobs in California Act (H.B. 7619). This federal bill would stop any state from taxing a former resident’s assets retroactively.

Kiley called the wealth tax an “unprecedented attempt” to penalize people who have already moved away. The bill protects nonresidents while leaving state authority over current residents intact.

Legal Battles and Migration Risks

Taxing former residents presents severe constitutional hurdles, testing due process and the right to travel. California already heavily relies on complex domicile tests to enforce tax compliance. If competing ballot measures—some aiming to require a two-thirds voter threshold for new one-time taxes—qualify, the legal landscape will only grow more chaotic.

For taxpayers, the lesson is clear: Residency is not just a mailing address. It can determine whether your wealth is taxable, even after you move.

Whether you need help navigating state tax exposure, unfiled returns, or IRS enforcement actions, Felecia G. Dixson, EA, CTRC, ATA, and our nationwide team are ready to protect your financial stability. Schedule a consultation with Dixson Tax Resolution Services today.

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