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The Feinstein Amendment, Real Estate, and California Estate Planning: A Requiem for the Step Up

Chase Hoyt · September 28, 2026 · 7 min read

It’s a peculiar thing, watching the golden light of sunset over the Pacific while contemplating the cold, hard mechanics of generational wealth transfer. Especially when those mechanics keep shifting beneath your feet, like sand under a rogue wave. For years, the federal estate tax exemption danced a predictable waltz with inflation, offering a certain comfort to those whose portfolios included a Malibu cliffside or a compound in Indian Wells. Then, just when you thought you had the rhythm down, along came the Feinstein Amendment, a legislative little known but potentially significant tweak that's sending shivers down the spines of wealth advisors and high net worth families eyeing their real estate in California. This isn't about the grand federal estate tax itself, which is still a behemoth, but about a more subtle, yet powerful, change to how trusts, particularly those containing real estate, are treated at the state level here in California. It's less a tsunami, more a persistent undertow that could pull your careful planning offshore.

The Grand Old Step Up, and Its Quiet Erosion

For decades, the "step up in basis" has been a cherished institution in estate planning. It’s the fiscal equivalent of a get out of jail free card for capital gains. When you inherited an asset, its cost basis was effectively reset to its fair market value on the date of the decedent’s death. This meant that if your parents bought a modest beach bungalow in the 1970s for 80,000 dollars and it’s now worth 8 million, you inherited it at that 8 million dollar basis. If you then sold it the next day for 8 million, you owed virtually no capital gains tax. A beautiful thing, this step up. A true benefit to the beneficiaries, allowing for the sale of appreciated assets without a massive tax bite. For anyone holding significant real estate assets in California, where property values have marched steadily skyward for generations, this was a crucial piece of the estate planning puzzle. It preserved wealth across generations, allowed for liquidity, and prevented families from being forced to sell a cherished property simply to cover a massive tax bill.

Then came Assembly Bill 1885, California’s nod to federal changes proposed by Senator Dianne Feinstein, hence the informal moniker, the Feinstein Amendment. This California amendment targets certain grantor trusts, specifically those often used in estate planning to manage and transfer high value assets like real estate. The gist of it is this: under previous law, for California income tax purposes, a grantor trust would cease to be considered a grantor trust upon the grantor's death. This meant that the assets within it received the aforementioned step up in basis. The Feinstein Amendment, or at least the spirit of it as interpreted in California, aims to close this perceived loophole. It asserts that for state income tax purposes, the trust may continue to be treated as a grantor trust even after the grantor’s death, particularly if there’s a non grantor beneficiary with certain powers. The effect: no step up in basis at the state level for assets in these trusts. The state now looks back to the *original* basis of the property, not its value at the time of inheritance. So, that 80,000 dollar bungalow, when sold, might still trigger a hefty California capital gains tax on the 7.92 million dollar appreciation.

What This Means For Your Manhattan Beach Mansion, And Your Kids

If your estate plan currently relies on certain types of grantor trusts to transfer highly appreciated Southern California real estate, and you’re a California resident, this change merits immediate attention. The financial implications are substantial. That beautiful mid century modern in Palm Springs, held in a revocable trust, might still get the federal step up, but California could come knocking for its share of the appreciation. This creates a two tiered tax situation that is both complex and potentially costly. Your liquidity needs might change drastically. If your heirs inherit a property with a low original basis and decide to sell, a significant portion of the proceeds could be eaten by state capital gains taxes. This could affect their ability to reinvest, pay off other debts, or simply fund their lives without forced liquidation.

Thinking about holding versus selling becomes a much more nuanced calculation. The hold horizon for these properties might need to extend considerably to dilute the impact of those capital gains over time, or the carrying costs of holding a property that your heirs don’t necessarily want to live in could become burdensome. Consider property taxes, maintenance, and insurance on a 10 million dollar estate in Malibu. These are not insignificant sums. For those looking to distribute wealth, the option of gifting properties outright also comes with its own set of considerations, namely gift taxes and the complete loss of any step up in basis, even federally, for the recipient. It’s a delicate balance of timing, tax implications, and the ultimate goals for your family’s legacy.

Rejiggering The Pieces: A New Game, With New Rules

So, what’s a high net worth individual with significant California real estate to do? First, don't panic, but do act. The time for reviewing your existing estate plan is now. Your wealth advisor, your estate planning attorney, and your tax professional need to be in lockstep. This is not a situation where a boilerplate solution will suffice. Every family's situation, every property's history, is unique. Strategies might include re evaluating the types of trusts used, considering alternative ownership structures, or even exploring more aggressive lifetime gifting strategies, fully understanding the gift tax implications. For some, it might mean using strategies that trigger a basis adjustment during life, or simply accepting that California's tax bite will be part of the future equation.

This isn't just about avoiding taxes. It’s about ensuring that your hard earned assets serve their intended purpose for future generations, without unintended consequences. It’s about preserving options, maintaining liquidity, and allowing for flexibility in a world that consistently changes its mind about how money moves. The 405 at 4 PM is predictable chaos. The state legislature, less so. Don't get caught off guard. Get your team together and strategize. The view from your oceanfront home might be priceless, but the cost basis is not a mere philosophical construct.

Common questions

How does the Feinstein Amendment impact real estate estate planning in California?
The Feinstein Amendment, as interpreted through California law, can prevent a step up in basis for certain assets held in grantor trusts for state income tax purposes, even if a federal step up still applies. This means higher California capital gains taxes for heirs upon the sale of appreciated real estate.
What is the 'step up in basis' and why is it important for inherited properties?
The 'step up in basis' is a tax rule that resets the cost basis of an inherited asset to its fair market value on the date of the decedent's death. This is crucial because it significantly reduces or eliminates capital gains tax if the inherited property is later sold, preserving more of the asset's value for the heirs.
What steps should I take if my estate plan includes high value California real estate?
If your estate plan involves high value California real estate and certain types of grantor trusts, you should consult with your estate planning attorney, wealth advisor, and tax professional immediately. They can help you review your current strategy and explore alternatives to mitigate the potential impact of this legislative change.

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