California Retirement Tax Guide: Prop 19, Mello-Roos, Medi-Cal, and the 13.3% Trap

What California taxes — and what it doesn't

California's retirement tax treatment is more favorable than its overall reputation suggests, with several major exceptions:

California does NOT tax:

• Social Security benefits (federal taxation still applies)
• Railroad retirement benefits
• VA disability benefits
• Inheritances or estates (no state inheritance or estate tax)

California DOES tax (at up to 13.3% top bracket):

• Traditional IRA and 401(k) withdrawals — fully taxed as ordinary income
• Pension income — fully taxed
• Annuity withdrawals — fully taxed
• Roth conversions — fully taxed in the year of conversion
• Capital gains — taxed as ordinary income (NO preferential rate, unlike federal)
• Qualified dividends — same as capital gains, no preferential rate
• Rental income — fully taxed

The headline rate for high-income CA retirees is 13.3% on the top marginal bracket (taxable income above $1.44M MFJ in 2025 tax year). The more practical number for most retirees is 9.3% (the bracket from $141K to $721K MFJ taxable income). California is one of only two states (along with Hawaii) where the state income tax can hit double digits on retirement income.

Prop 19 — what it changed for inherited property

Proposition 19 passed in November 2020 and took effect February 16, 2021. It fundamentally changed how California treats parent-to-child property transfers at death.

Before Prop 19 (Prop 58 era)

Parents could transfer their primary residence to children with the property tax assessment fully preserved. Up to $1 million of any other California property (rentals, vacation homes) could also transfer with assessment preserved. This created a massive intergenerational tax advantage — kids inherited not just the property but the parents' decades-old low property tax basis.

After Prop 19

• Primary residence: Children can still inherit the assessment IF they make it their own primary residence within one year of the transfer. There's also a $1 million inflation-adjusted exclusion above the current assessed value (so if the home has appreciated more than $1M since the parents' assessment, the excess gets reassessed).
• Rental property, vacation homes, commercial property: Full reassessment to current market value. The $1M exclusion is gone for these. A rental that's been in the family at a 1985 assessment will reassess at 2026 market value the moment it transfers to the kids.

For California retirees with rental real estate they intended to leave to children, Prop 19 dramatically changed the math. A property purchased in 1990 for $300K and now worth $1.5M would have transferred to children at the original $300K-ish assessed value (with normal Prop 13 inflation adjustments). Post-Prop 19, it reassesses at $1.5M — typically tripling or quadrupling the annual property tax for the children.

What to do about Prop 19 if you own rental property

Three categories of response:

1. Hold to death (still works for primary residence + appreciation step-up)

The federal step-up basis in basis at death still works — your heirs get a clean cost basis at fair market value. Combined with the primary-residence Prop 19 exception (if they'll live there), this can still be powerful. But for non-primary residences, the property tax reassessment is the new cost.

2. Sell and use a structured installment sale (Section 453)

Instead of selling and recognizing the entire capital gain in one year (potentially crossing into the 13.3% CA bracket, triggering IRMAA, and bumping into the 20% federal LTCG rate), use a structured installment sale to spread the recognition over 5-30 years. Each year's recognized gain stays in lower brackets. The buyer pays cash at closing to an assignment company; the assignment company pays you on a customized schedule. The math is dramatically favorable for high-appreciation properties.

3. Refinance, hold, let kids deal with it

Some retirees facing Prop 19 reassessment exposure refinance the property to pull cash out (using the cash for current spending or to pay other estate-planning premiums) and let the kids face the reassessment. This isn't a tax strategy — it's a liquidity strategy that acknowledges Prop 19 will hurt and adjusts accordingly.

For California retirees with multi-million-dollar rental portfolios, Prop 19 is the single biggest estate-planning shift in the last 30 years. It deserves a focused conversation with a tax professional who actually understands the CA rules.

Medi-Cal — what changed in 2024

Medi-Cal is California's Medicaid program. For seniors needing long-term care, Medi-Cal eligibility historically required either being below an asset limit (recently $130K for single, $195K for couples) or doing Medicaid planning (gifting, irrevocable trusts, etc.) to qualify.

As of January 1, 2024, California eliminated the asset test for Medi-Cal. There is now only an income test. The exact income limits vary by program category but are generally aligned with federal poverty level multiples.

This is a massive change with mixed implications:

• Good news for middle-class families: Medi-Cal Long-Term Care eligibility no longer requires impoverishment. A widow with $400K in IRA and $800K of home equity can qualify for Medi-Cal LTC if her income (RMDs + SS + pension) stays under the income threshold. Federal Medicaid still has asset rules; California's program is now more generous.
• Estate recovery still applies: California can still attempt estate recovery against the recipient's estate after death, though enforcement and exemptions vary.
• Income management becomes the key planning lever: Where Medicaid planning used to focus on asset shelters and Medicaid-compliant annuities, post-2024 it shifts toward income management — keeping RMD-driven income below the threshold via QCDs, Roth conversion planning, or income-deferral structures.

For California retirees worried about LTC catastrophic risk, this is potentially the most favorable Medicaid environment in the country. Hybrid LTC insurance and asset-based LTC products are still relevant for those who want to preserve full asset flexibility — but the "Medi-Cal as backstop" plan is now much more viable than it was pre-2024.

Mello-Roos and the property tax reality

California property tax is governed primarily by Prop 13 (1978), which caps annual increases at 2% and reassesses at sale or major improvement. This is one of the most favorable property tax environments in the country for long-time owners.

The "Mello-Roos" wrinkle applies to certain newer developments (typically post-1982 in most of the state, post-1990s in many SoCal neighborhoods). Mello-Roos refers to Community Facilities Districts that levy additional special taxes on top of the base 1% Prop 13 rate — often 0.5-2% additional, sometimes more.

For retirees:

• If you bought your primary residence in 1985 in an older neighborhood, your property tax bill is likely tiny. Prop 13 has done you decades of favor.
• If you're considering downsizing within California: the new home will reassess at market value AND may carry Mello-Roos special tax. Your property tax bill can easily 5x even if you "downsize" by square footage. The Prop 19 portability rules (parent's assessment transferable to a smaller home of similar value, with conditions) help in some cases — verify with your county.
• If you're considering selling appreciated CA real estate: the capital gain (taxed at CA's ordinary rate, no preferential treatment) plus federal LTCG plus NIIT plus Medicare surtaxes can easily eat 35-40% of the gain. The structured installment sale conversation becomes urgent.

The Roth conversion case in California

California taxes Roth conversions at the same ordinary income rates as IRA withdrawals — up to 13.3%. This makes the conversion math marginally less favorable in California than in no-state-tax states like Texas, Florida, or Nevada.

But the case is still overwhelmingly positive for most California retirees, because:

• The state will tax the IRA eventually, either when you take RMDs or when you convert. The decision is when, not whether.
• Pre-conversion (in your 60s, before SS, before RMDs) often happens in lower CA brackets than post-RMD income would.
• If you ever plan to move out of California in retirement (to NV, FL, TX, or similar), convert in California before the move. CA loses the right to tax future IRA withdrawals once you've changed domicile — but they retain the right to tax Roth conversions that happen while you're a CA resident. So convert NOW (CA tax) → move → withdraw Roth tax-free anywhere = clean.
• The federal case for conversion is unchanged regardless of state. CA tax adds friction but rarely changes the directional conclusion.

For high-net-worth retirees planning to leave California, the pre-move conversion sequence is one of the cleanest tax plays available. Talk to a tax professional well before the move date.