California taxes for early retirees: sunshine, with a surcharge

By Tom, CPA · Updated October 25, 2026

TL;DR: California taxes most retirement income, including capital gains at ordinary rates (1% to 12.3%, plus 1% above $1 million for 2025), and doesn't follow federal HSA rules. Social Security is not taxed. Leaving the state takes more than a moving truck: the FTB looks at where your closest connections are.

Educational only, not tax, legal, or investment advice. Examples are illustrations, not predictions. Rules and limits change; verify current figures and talk to a qualified professional about your situation.

California taxes capital gains like a salary and treats HSAs like a rumor it heard once. For early retirees living off a portfolio, that matters more than the famous top rate, because most of your income will be withdrawals, dividends and gains.

The good news: a well-planned early retirement can keep California taxable income modest, and Social Security is exempt. This guide walks through the brackets, the HSA problem, capital gains, how residency works when you leave, and a worked example.

CPA Warning Label: May cause sticker shock at the words 'conformity' and 'domicile.' Keep sunscreen and a spreadsheet nearby.

Brackets (verify)

California has a progressive income tax. For tax year 2025, the FTB's rate schedules run from 1% to 12.3%, and the Mental Health Services Tax adds 1% on taxable income over $1 million, for a top rate of 13.3%. As of October 2026, the FTB had not published the 2026 schedules on the page we reviewed; California indexes bracket thresholds for inflation each year, so check the current year's schedule.

Points that matter for early retirees:

• Low brackets are low. The first few brackets apply single-digit rates, so a retiree with modest taxable income pays a small effective rate even though the top rate gets the headlines.
• California has its own standard deduction and exemption credits, which are much smaller than the federal standard deduction. Don't assume income that's federally tax-free is California tax-free.
• Social Security benefits are excluded from California income. Pensions, traditional IRA and 401(k) withdrawals and Roth conversions are generally taxable.

No HSA deduction

California does not conform to federal health savings account rules. According to the FTB's Schedule CA instructions, contributions you deduct federally must be added back for California, employer HSA contributions excluded from federal wages are taxable to California, and interest, dividends and gains earned inside the HSA are taxable to California each year.

For a FIRE household that loves the HSA as a stealth retirement account, that's a wrinkle, not a deal-breaker. The federal benefit is still real. But:

• Track your California basis in the HSA, because amounts already taxed by California shouldn't be taxed again.
• Holding tax-efficient funds inside the HSA reduces the annual California hit on earnings.
• Some people keep the HSA in cash-like holdings while California residents and invest it more aggressively after moving. Others don't bother. Both are defensible.

See HSA vs. taxable vs. Roth for the federal side.

Gains taxed as ordinary

Federally, long-term capital gains and qualified dividends get preferential rates, including a 0% bracket that early retirees love. California taxes capital gains as ordinary income at the same rates as wages. There is no 0% bracket for gains.

That changes a classic FIRE move. Tax-gain harvesting in the federal 0% bracket can still be worth doing in California, but it isn't free. The state bill on $40,000 of harvested gains could be a few hundred to a couple thousand dollars depending on your other income. Compare that cost with the long-term benefit of a higher basis.

Also note: California does not tax interest on California municipal bonds, but it does tax interest on other states' munis.

Residency exit rules

California taxes residents on all income and nonresidents only on California-source income. The FTB's residency guidance looks at where you are domiciled and whether you're in California for more than a temporary or transitory purpose. It weighs factors like:

• Where your spouse and children live
• Location of your principal home and whether you kept the California home
• Driver's license, vehicle registration and voter registration
• Where your doctors, professionals, bank accounts and memberships are
• Time spent in California versus elsewhere

There's also a presumption that you're a resident if you spend more than nine months of a tax year in California. Leaving before a big Roth conversion or sale is common; leaving on paper only is how people end up in audits. Make a clean break and keep records. Part-year residents file Form 540NR. See changing state tax residency.

Example

Illustration. Hypothetical married couple, early 50s, California residents, no wages. They fund living costs with $40,000 of Roth contributions and taxable-account cash, and realize $30,000 of long-term gains plus $5,000 of qualified dividends. They also contribute $8,000 to an HSA from a prior-year sabbatical job.

• Federal: taxable income after the 2026 standard deduction ($32,200 joint) is small, and the gains and dividends fall in the 0% capital gains bracket. Federal income tax: roughly $0.
• California: the $35,000 of gains and dividends is taxed as ordinary income after California's smaller deduction. There's no HSA deduction, so the $8,000 doesn't help. The state bill is modest but not zero, likely several hundred dollars.

Moving to a no-income-tax state would save that amount, plus more on larger conversions later. Whether it's worth uprooting a life for is up to them. Lavish Larry would note that the beach is also not taxed, only the parking.

Withdrawal ideas for California residents

Because California taxes almost every kind of portfolio income the same way, the order of withdrawals matters less for state tax than it does federally. What matters most is the total taxable income each year. A few patterns early retirees use:

• Smooth income across years. With progressive brackets, $40,000 of taxable income in each of five years usually beats $200,000 in one year.
• Spend Roth contributions and cash basis in high-tax years. They aren't taxable to California or federally.
• Coordinate with the ACA. Lower state and federal taxable income usually also means larger premium credits.
• Think about timing around a move. If leaving California is genuinely in your plans, the years after you leave are often better for large conversions or sales.

Common California mistakes

• Assuming the federal 0% gains bracket applies at the state level.
• Forgetting to add back HSA contributions and earnings on the California return.
• Doing a large Roth conversion the year before a move instead of the year after.
• Keeping the California house "just in case" and spending most of the year there.

Federal taxes still apply

Whatever California does, the federal system still sets the base. For 2026 the federal standard deduction is $16,100 for single filers and $32,200 for married couples filing jointly, and long-term capital gains can fall in a 0% bracket at lower incomes. Many early retirees aim to fill the low federal brackets each year with Roth conversions or gain harvesting. State tax then rides on top, so check how California treats each type of income before deciding how much to convert. Social Security can become partly taxable federally as other income rises, and Medicare premiums later depend on income from two years earlier. A year of very low income can be just as wasteful as a year of very high income, because unused low brackets disappear on December 31. See 2026 tax brackets for FIRE.

Health coverage before Medicare

Before Medicare at 65, most early retirees in California buy coverage through the ACA Marketplace (HealthCare.gov or the state exchange). Premium tax credits depend on household income, so the same withdrawal choices that drive California income tax also drive what you pay for insurance. Price plans for your actual county, since insurer choice and premiums vary a lot between metro and rural areas. If your taxable income will be very low, check Medicaid eligibility rules for California too. Our guides to the ACA subsidy cliff and managing MAGI go deeper.

One practical tip: estimate next year's income before open enrollment, then pick withdrawals to land where you planned. Surprises in either direction get reconciled on your federal return, and from 2026 there is no cap on repaying excess advance credits.

Your California planning checklist

Use this as a starting list when you are weighing a move or planning withdrawals. Work through it a year before you leave your job, and again each fall before you decide on Roth conversions.

• List expected income by type: gains, conversions, pensions and Social Security (the last is exempt).
• Model California tax on each Roth conversion, not just federal.
• Track California HSA basis separately.
• If you plan to leave, schedule big gains and conversions for after residency truly changes.
• Keep calendars and receipts showing where you spend time.

Tax rules change every legislative session. Confirm current figures with the California revenue department before acting, and treat this page as education, not advice for your situation.