California’s Approach to Capital Gains

The Franchise Tax Board treats capital gains identically to wages, bonuses, and every other form of income. Short-term or long-term, it all flows into the same progressive bracket structure. The top rate of 13.3% applies to income above roughly $1 million, and there’s an additional 1% Mental Health Services Tax above that level, bringing the effective top rate to 14.4% for very high earners.

For context, the federal government taxes long-term gains at a maximum of 20%, plus the 3.8% NIIT. So an LA resident in the top brackets faces a combined rate of approximately 37.1% on long-term capital gains. A Florida resident faces 23.8%. That’s 13.3 percentage points of pure state-level savings.

The Dollar Difference

Here’s what the comparison looks like on specific transactions that LA professionals commonly encounter:

• $500,000 gain from selling RSUs: California tax = ~$60,000. Florida tax = $0. Savings: $60,000.
• $1 million gain from a business sale: California tax = ~$130,000. Florida tax = $0. Savings: $130,000.
• $3 million gain from selling a production company: California tax = ~$399,000. Florida tax = $0. Savings: $399,000.

These aren’t theoretical numbers. Entertainment executives, tech founders, and real estate developers in LA face exactly these scenarios. At the $3 million level, the California tax alone is more than many people earn in a decade.

California’s Clawback Rules

California is more aggressive than most states about holding onto former residents. The FTB’s residency rules are built to prevent people from moving on paper while keeping their life in California. A few things to know:

The safe harbor rule: If you leave California and stay away for at least 546 consecutive days (about 18 months), you’re generally treated as a nonresident from the date of departure under 18 CCR § 17014. Come back for more than 45 days during that period for non-business purposes, and the clock restarts.

California-source income sticks: Even after you become a Florida resident, California taxes income sourced to the state under state sourcing rules. That includes rents from California property, income from a California-based business (unless it’s fully allocated elsewhere), and compensation for services performed in California. Selling stock or intangible assets is generally sourced to your state of domicile, which is why the timing of the move relative to the sale matters so much.

Equity compensation traps: Stock options and RSUs earned while working in California are partially California-source income, even if you exercise or vest them after moving. The allocation is based on the ratio of California workdays during the grant-to-vest period. A founder who worked in LA for three of the four years between grant and vest still owes California tax on 75% of the gain.

How to Execute the Move

Relocating from LA to Florida for tax purposes requires genuine commitment. The FTB audits high-income movers, and they’re good at it. Here is what a clean move looks like:

• Physically relocate to Florida before the tax year in which you plan to sell
• Terminate your California lease or sell your California home
• File a Declaration of Domicile in the Florida county where you settle
• Get a Florida driver’s license, register your car, and register to vote
• Open bank accounts at Florida branches and close or transfer California ones
• Move professional relationships — doctors, lawyers, financial advisors — to Florida

The 546-day safe harbor is the strongest shield you have. If you can wait 18 months after leaving before triggering a large gain, California has very little room to argue you were still a resident.

What Florida Doesn’t Have

Beyond zero capital gains tax, Florida has no estate tax, no inheritance tax, and no tax on retirement income. For someone building a long-term wealth plan, the absence of an estate tax alone can save families millions. California’s estate tax was repealed in 1982, so that specific advantage doesn’t apply to CA-to-FL movers — but the income tax savings on capital gains during your lifetime dwarf most other considerations.

Florida does have higher property taxes in some areas, a higher cost of insurance (hurricane and flood), and no SALT deduction benefit since there’s nothing to deduct. But for someone paying $130,000+ per year in California income tax on capital gains, the insurance premiums look like pocket change.

Sources

• CA FTB — Capital Gains and Losses
• CA FTB — Tax Rates
• CA FTB — Residency Status
• 18 CCR § 17014 — California Resident Defined
• IRS — Topic 409, Capital Gains and Losses
• 26 U.S.C. § 1(h) — Capital Gains Tax Rates