Capital Gains on Inherited Property in Los Angeles: How to Navigate Taxes, Step-Up in Basis, and Proposition 19 in 2026

One of the first questions I hear from families inheriting a home in Los Angeles is: "How much tax will we owe if we sell?" It is a fair question with no simple answer, but understanding the rules can make a massive difference in what your family ultimately walks away with.

The good news: there are powerful tax advantages built into our system for inherited property. The tricky part is that three separate sets of rules apply at the same time — federal capital gains tax, California state tax, and Proposition 19 property tax reassessment. Most people only hear about one or two of these, and that is where costly surprises come from.

After twenty-five years helping families navigate inherited property in Los Angeles, I have seen how much clarity on the tax picture can change the decisions families make. So let's walk through each layer together.

The Step-Up in Basis: Your Biggest Tax Advantage

The single most powerful tax benefit for heirs is called the step-up in basis. Under federal tax law (Internal Revenue Code Section 1014), when someone dies, the cost basis of their property is "stepped up" to the fair market value on the date of death. This means all of the appreciation that happened during the deceased owner's lifetime is wiped clean for capital gains purposes.

The California Community Property Advantage

Here is where California families have a significant advantage over families in most other states. California is a community property state, which means that when one spouse dies, both halves of the property receive a stepped-up basis — not just the deceased spouse's half.

Important: Property held in joint tenancy does NOT get the same treatment. Only community property receives the full double step-up. If you or your parents are planning ahead, this is one reason many California estate attorneys recommend holding title as community property rather than joint tenancy.

Federal Capital Gains Tax When You Sell

If you sell an inherited property and the sale price exceeds the stepped-up basis, the gain is taxed at the federal level. Here are the 2026 rates:

• 0% rate: If your taxable income is under $47,025 (single) or $94,050 (married filing jointly)
• 15% rate: Income between $47,026 and $518,900 (single) or $94,051 and $583,750 (married)
• 20% rate: Income above those thresholds
• Additional 3.8% Net Investment Income Tax (NIIT): Applies if your modified adjusted gross income exceeds $200,000 (single) or $250,000 (married)

California State Capital Gains Tax

This is the piece that surprises many families. California does NOT offer a lower rate for long-term capital gains. Unlike the federal government, California treats capital gains as ordinary income — and our top marginal rate is 13.3%.

For a high-income earner in Los Angeles selling an inherited property, the combined marginal tax rate on capital gains can reach roughly 37% when you add federal (20%), NIIT (3.8%), and California (13.3%). This is why understanding your basis and timing your sale strategically matters so much.

Proposition 19: The Property Tax Side of the Equation

Capital gains are one piece of the puzzle. The other piece — and the one that affects you even if you do not sell right away — is Proposition 19 property tax reassessment.

Effective February 16, 2021, Proposition 19 significantly changed the rules for inherited property. Under the old law (Proposition 58 and Proposition 193), children could inherit a parent's home and keep the parents' low property tax assessed value — no matter what they did with the property. That is no longer the case.

Here is what Prop 19 means for inherited property in Los Angeles today:

• Principal residence exclusion: If a child inherits a parent's primary residence and moves into it as their own primary residence within one year, they can keep the parent's assessed value — up to a cap. For transfers between February 16, 2025 and February 15, 2027, the cap is $1,044,586 above the parent's factored base year value.
• Partial reassessment: If the home's value exceeds the parent's assessed value plus the cap, only the excess is reassessed. For example, if the parent's base year value is $200,000 and the current fair market value is $1,500,000, the reassessed value becomes $1,244,586 ($200,000 + $1,044,586) if the child qualifies.
• No exclusion for rentals or second homes: This is the biggest change. Under Prop 19, inherited rental properties and vacation homes are fully reassessed to fair market value — no cap, no exclusion. This can cause property taxes to jump from a few thousand dollars to $15,000+ per year on an LA home.

The practical implication: if your family inherited a home that was not your parents' primary residence (a rental property or a vacation home), property taxes will rise to current market rates immediately. This makes the "keep and rent" analysis very different from what it was before Proposition 19.

Putting It All Together: A Real-World LA Scenario

Let's walk through a scenario that captures the reality many Los Angeles families face.

Five Tax Strategies Every LA Heir Should Consider

1. 1
   Determine your exact stepped-up basis before deciding to sell. Get a professional appraisal as of the date of death. Many families in LA assume the basis is what their parents paid, missing the huge tax-free benefit of the step-up. The probate referee's appraisal counts for court purposes, but for tax planning, a full appraisal from a certified appraiser is worth the investment.
2. 2
   Factor Proposition 19 into your hold vs. sell analysis. If you are not moving into the inherited home as your primary residence, property taxes are likely to increase significantly. Run the numbers before you decide to keep the property as a rental. A $1,000/month property tax increase on a home that rents for $4,500/month still leaves positive cash flow — but on a home that rents for $3,200/month, it could tip the balance toward selling.
3. 3
   Time the sale thoughtfully if you can. If you are in a low-income year (between jobs, retired, or taking a sabbatical), selling during that year could keep you in a lower capital gains bracket. This is especially valuable for the federal 0% bracket if your total income stays under $47,025 (single) or $94,050 (married).
4. 4
   Consider the one-year primary residence window under Prop 19. If one sibling is willing to move into the inherited home, the family could retain the parent's low property tax basis (up to the cap). This might make sense even if the sibling only lives there for a few years before they sell — the property tax savings in the meantime could be substantial.
5. 5
   Work with a CPA or tax professional who understands California probate tax rules. This is not a DIY area. The interplay between stepped-up basis, Prop 19 reassessment, and potential estate tax filings (rare at the state level, but relevant for federal estates over ~$13 million in 2026) requires professional guidance. Many CPAs who do not specialize in probate miss the community property double step-up or confuse Prop 19 with capital gains rules.

What About 1031 Exchanges and Inherited Property?

Another common question I get is whether a 1031 exchange can be used for inherited property. The answer is yes — but only for investment or business properties, not personal residences. If the inherited property was a rental, the heir can do a 1031 exchange into another like-kind investment property and defer capital gains taxes. But if the property was Mom and Dad's primary residence, a 1031 exchange does not apply.

For inherited primary residences, the tax advantage is already built in through the step-up in basis. You do not need a 1031 exchange to avoid capital gains — the step-up does that work for you on pre-death appreciation.

Key Sources for Further Reading

Tax rules evolve, and the specifics of your situation matter. Here are the primary sources your advisor should reference:

• • Internal Revenue Code Section 1014 — Basis of Property Acquired from a Decedent
• • Internal Revenue Code Section 1014(b)(6) — Community Property Step-Up
• • California Revenue and Taxation Code Sections 63.1 and 69.5 (Proposition 19 implementing statutes)
• • California Board of Equalization — Proposition 19 Guidance and Filing Forms (BOE-19-P, BOE-19-G, BOE-19-D)
• • IRS Publication 523 — Selling Your Home (for the primary residence exclusion rules)