Inherited Property Taxes in California: Stepped-Up Basis, Capital Gains, and Proposition 19

Two separate tax systems, two different timers

When a California resident inherits real estate, two separate tax regimes apply, and they often get confused because both use the phrase "property tax." The first is federal capital gains tax on the eventual sale of the property — that's an income tax governed by the Internal Revenue Code and administered by the IRS. The second is California property tax — the annual assessment on the property's value, governed by California's Proposition 13 framework and administered by the county assessor. These two systems have completely different rules, different agencies, and different timing. An heir who plans correctly for one and ignores the other can lose tens of thousands of dollars.

The federal regime is more forgiving for inherited property because of stepped-up basis, which usually reduces or eliminates capital gains tax on a sale shortly after inheritance. The California regime, by contrast, has become significantly less forgiving since Proposition 19 took effect in February 2021 — most parent-to-child transfers of non-primary-residence property now trigger full property tax reassessment to market value.

Both topics deserve real explanation. We'll cover the federal side first because it's usually the larger dollar issue, then the California Proposition 13/19 framework, and then how the two interact when an heir decides whether to sell or hold.

Federal stepped-up basis: the rule, and why it matters

Capital gains tax on real estate is calculated on the difference between the sale price and the seller's tax basis. For property someone bought, the basis is generally the purchase price plus capital improvements. For property someone inherited, the basis is "stepped up" to the property's fair market value on the date of the original owner's death. This rule lives in Internal Revenue Code §1014.

The practical effect: when an heir sells inherited property shortly after inheriting it, there's usually little or no capital gain. The sale price and the basis are both at recent market value, so the difference is small. The decades of appreciation that happened while the original owner held the property are wiped from the heir's basis calculation. That can mean hundreds of thousands of dollars in eliminated tax for a long-held California home that appreciated from $80,000 in 1985 to $700,000 in 2026.

Example: a parent bought a Sacramento home in 1990 for $120,000. The home is worth $620,000 when the parent dies in 2026. The child inherits and sells six months later for $625,000.

If the parent had sold the home themselves the day before they died: gain of $500,000, federal long-term capital gains tax at the applicable rate, plus California state tax on the gain (California taxes capital gains as ordinary income).
The child inherits with stepped-up basis of $620,000. Sells for $625,000. Gain of $5,000. Tax owed is minimal.

That single rule is why "die and let the kids sell" has been a foundational tax-planning move for California real estate for decades. The IRS publishes detailed guidance on basis for inherited property in IRS Publication 551 (Basis of Assets).

How basis is established at the date of death

The fair market value at the date of death has to be documented. For probated estates, the probate referee's appraisal serves as the documentation. For estates that bypass probate (trust assets, joint tenancy, transfer-on-death deeds), the heir needs to obtain a date-of-death appraisal from a licensed appraiser. The cost is typically $500-$800 for a residential property and the appraisal should be ordered as soon as practical after the death — appraisers can value retroactively but it's easier and more reliable when done close to the actual date.

The date-of-death appraisal becomes the heir's permanent basis record. Even if the heir holds the property for decades before selling, the original date-of-death value (plus any capital improvements the heir made while holding) is what the IRS will reference if the sale is ever audited. The appraisal report should be filed with the heir's permanent tax records and provided to whatever CPA prepares the return for the sale year.

The alternate valuation date

The estate's executor can elect to value the assets six months after the date of death instead of on the death date, but only if doing so reduces both the estate tax and the federal income tax basis. The election is made on Form 706 (the federal estate tax return). For estates under the current federal estate tax exemption (high seven figures), the election doesn't apply because no Form 706 gets filed in the first place. Most California estates fall well under the federal exemption and use the date-of-death value by default.

Joint tenancy, community property, and how spouses are different

For property held in joint tenancy between two non-spouses, only the deceased owner's portion gets stepped up. The surviving owner's portion keeps the original basis. So if two unrelated owners held a property 50/50 in joint tenancy and one died, half the basis steps up and half stays the same.

For California community property between spouses, both halves step up when the first spouse dies — even though only one spouse has died. This is the "double step-up" rule that makes California (and other community property states) particularly favorable for couples. The full step-up requires that the property actually be held as community property, not as joint tenancy with right of survivorship — which is a common drafting mistake. Couples who held their home as joint tenancy by default get only the deceased spouse's half stepped up, missing out on potentially significant tax savings. IRC §1014(b)(6) is the specific provision that authorizes the community property full step-up.

This is why estate planning attorneys frequently recommend converting joint-tenancy title to community property (or community property with right of survivorship, a hybrid California allows) for married couples. The deed change is a simple recorded document with significant tax implications. Couples who haven't done this should talk to a California estate planning attorney before either spouse dies; after the first death, the opportunity is gone.

How long the heir has to wait before selling

There's no required waiting period. The heir can sell inherited property the day after taking title. The basis is the date-of-death value regardless of how soon the sale happens. The gain is small if the sale price is close to the date-of-death value, and the small holding period doesn't disqualify the property from long-term capital gain treatment — inherited property is automatically considered long-term regardless of the heir's actual holding period.

This matters because some heirs are told they should "wait a year" to sell to qualify for long-term treatment. That advice doesn't apply to inherited property. The long-term holding period requirement applies to property purchased, not property inherited. Heirs can sell immediately and still get long-term capital gain treatment on any gain that does exist.

California property tax: Proposition 13 and the assessment system

California property tax operates on a base year value system created by Proposition 13 in 1978. When a property is purchased, the assessor sets the base year value at the purchase price. After that, the assessed value can increase by a maximum of 2% per year regardless of what the actual market value does. The tax rate is generally 1% of assessed value plus locally-approved bonds and assessments, for an effective rate of typically 1.1% to 1.25%.

The result, after decades, is that long-held properties have assessed values well below market values. A Sacramento home purchased in 1985 for $90,000 might have an assessed value of around $200,000 today (2% per year compounding over 40 years) while the actual market value is $620,000. Annual property tax on the $200,000 assessment is about $2,400 — versus about $7,400 on the market value of $620,000. That gap is the "Proposition 13 benefit" that long-held California properties carry. The California State Board of Equalization property tax page publishes the official explanation and current rules.

The Proposition 13 base year value is preserved as long as ownership doesn't change. The moment the property transfers, the assessor reassesses to current market value — and the new owner's annual tax bill jumps to reflect that. This is the "reassessment" that heirs frequently want to avoid.

What Proposition 19 changed for parent-to-child transfers

Before February 16, 2021, California's parent-to-child transfer exclusion was generous. A parent could transfer a primary residence of unlimited value to a child without reassessment, and could also transfer up to $1 million of assessed value in other property (rental homes, vacation homes, commercial) without reassessment. This exclusion was a major intergenerational wealth transfer tool — children inherited a parent's rental property with the parent's Proposition 13 base, often paying a small fraction of what a buyer would have paid in property tax.

Proposition 19, which California voters approved in November 2020 and which took effect February 16, 2021, narrowed this significantly. Under current law:

Primary residence transfers: The child can avoid reassessment only if the child uses the property as their own primary residence within one year of transfer, AND files for the homeowner's exemption. The protection from reassessment caps at the property's assessed value plus $1 million — so a Sacramento home with $200,000 assessed value can be excluded up to $1.2 million of market value. Above that, partial reassessment kicks in. The State Board of Equalization Proposition 19 page maintains current cap calculations and the application process.
Non-primary-residence transfers: Rental homes, vacation homes, commercial property — full reassessment to market value. The old $1 million exclusion is gone.

The practical effect on inherited rental property in particular is dramatic. A Sacramento rental that the parent held at a $180,000 assessed value (annual tax around $2,200) now reassesses to current market value on transfer — call it $480,000 in market value (annual tax around $5,900). That's a $3,700/year increase the heir absorbs immediately. Over a decade-plus hold, the cumulative tax difference is significant.

Proposition 19 also expanded protections in the other direction: California homeowners over 55 (or severely disabled, or victims of natural disasters) can now transfer their Proposition 13 base year value to a replacement primary residence anywhere in the state, up to three times in a lifetime. This portability was the trade-off legislators offered to voters in exchange for the parent-to-child narrowing.

How to apply for the parent-to-child exclusion

The exclusion isn't automatic. The receiving child has to file a claim with the county assessor — Form BOE-19-P for primary residences, plus the supporting documentation (death certificate, deed showing the transfer, evidence the child has moved in as primary residence and claimed the homeowner's exemption). The claim has to be filed within three years of the transfer or before the property is sold/transferred to a third party, whichever is earlier. Sacramento County and Placer County both have the BOE-19-P form available on their county assessor websites.

Missing the filing window doesn't automatically void the exclusion if the heir later applies, but it does trigger interim reassessment that has to be unwound, which is administratively painful. Heirs who plan to claim the exclusion should file the BOE-19-P within the first six months of taking title.

When the heir sells: the federal capital gains math

For an heir who decides to sell rather than hold, the federal tax math runs through these steps:

Sale price (net of selling costs — commission, escrow fees, closing costs the seller pays)
Minus tax basis (date-of-death value plus any capital improvements the heir made during their ownership)
Equals taxable gain (or loss — a small loss is possible if the property appreciated very little between inheritance and sale, or depreciated)
Long-term capital gains rate applies (0%, 15%, or 20% depending on the heir's overall taxable income for the year)
3.8% net investment income tax applies if the heir's modified AGI exceeds the threshold for their filing status
California state tax applies — California treats capital gains as ordinary income, so the rate runs from 1% to 13.3% depending on the heir's California income bracket

For most heirs selling inherited California property at or near the date-of-death value, the federal and state tax owed is small. Heirs who hold for several years before selling, during which the property appreciates further, owe tax on the post-inheritance appreciation at the long-term capital gains rate. The IRS Publication 544 (Sales and Other Dispositions of Assets) covers the reporting on Form 8949 and Schedule D.

The hold-vs-sell calculation for inherited California property

The economic question for most heirs is whether to keep the inherited property (as a residence, rental, or vacation home) or to sell it. The basic factors:

Property tax exposure under Proposition 19. If the parent's assessed value is dramatically lower than current market value, and the property doesn't qualify for the primary-residence exclusion, the heir absorbs the reassessment going forward. For long-held parental property this can be a five-figure annual increase.
Mortgage on the inherited property. If the parent had a mortgage, the heir can typically assume it (under the federal Garn-St. Germain Act for transfers to relatives) but has to keep paying it. Refinancing is also an option but usually triggers reassessment if not already triggered.
Carrying costs. Insurance, maintenance, utilities, HOA, property management if rented. These continue from the date of inheritance regardless of whether the heir intends to keep the property.
Market timing. Selling now vs. holding for further appreciation. This is a market-timing call that no one consistently gets right.
The heir's actual use. An out-of-state heir who can't or won't use the property as a residence usually finds the carrying costs and management burden outweigh the appreciation potential.

For estates where the heirs decide to sell — particularly when multiple heirs share an inheritance and need to liquidate the property to split the proceeds — the conventional path is a listing agent, an MLS listing, contingencies, and a 60-90 day timeline from listing to close. The alternative path is a cash sale to a direct buyer, which trades a discount from market for speed and certainty. Sacramento-area heirs handling estates that need to close quickly sometimes consult a Sacramento home buyer who will close in seven to fourteen days through a local title company, eliminating both the prep-and-list period and the contingency risk. The trade-off, again, is price — typical cash offers come in below what a fully prepared and well-marketed listing would produce — but for estates where the carrying cost is meaningful and the heirs need to close, the math can work either way and a comparative quote is the only way to know.

State inheritance and estate tax: California's position

California does not impose a state inheritance tax or a state estate tax. The federal estate tax applies to estates above the federal exemption (currently in the high seven figures, indexed for inflation), but most California estates fall well below that threshold and pay no federal estate tax. The California Franchise Tax Board publishes the state's position on inheritance — no state-level inheritance tax — along with guidance on California income tax issues that may arise for heirs.

This is a meaningful difference from states like Pennsylvania, Maryland, or Nebraska that do impose inheritance taxes on the recipient. California heirs receive inherited property tax-free at the state level (apart from the property tax reassessment discussed above, which is a recurring annual tax rather than a one-time inheritance tax).

What records the heir needs to keep

An heir who inherits California real estate and may eventually sell should preserve:

The deed transferring title to the heir (recorded at the county recorder)
Date-of-death appraisal report from a licensed appraiser, or the probate referee's appraisal if the property was probated
Decedent's death certificate
Any trust documents or will provisions that authorized the transfer
Filed and approved BOE-19-P claim (if applicable) and homeowner's exemption claim
Receipts for any capital improvements made during the heir's ownership (additions, major systems replacements, structural work)
Property tax bills and payment records during the heir's ownership

This packet becomes the basis documentation for the eventual sale return. Without it, the heir is reconstructing basis from incomplete records, which often results in either overpaying tax (because some basis components weren't documented) or under-reporting basis and facing audit risk.