Stepped-Up Basis on Inherited Property in California: A Plain-English Guide

Inheriting a home is emotional. It's also a tax event. Between probate, property taxes, and capital gains rules, most heirs feel buried in fine print before they even find the front door key.

Here's the good news. Federal tax law includes a rule called stepped-up basis. It can wipe out most or all of the capital gains tax when you sell an inherited home. If you're in California, where home values have climbed for decades, this rule matters even more.

This guide breaks down what stepped-up basis is, how it works in California, the paperwork you'll need, and what to think about before selling.

What Stepped-Up Basis Actually Means

Capital gains tax is calculated on the difference between what you sell a property for and what it originally cost. That original cost is called the basis.

Say your parents bought a home in Long Beach in 1978 for $75,000. Over the years they added a new roof, a bathroom, and a backyard deck. Their adjusted basis might now be around $110,000. If they sold the home today for $900,000, they'd owe capital gains tax on roughly $790,000 (minus the primary residence exclusion).

Now imagine you inherit that same home. Under the stepped-up basis rule, your basis is reset to the fair market value on the date of death. If the home was worth $900,000 the day your parent passed away, that becomes your new basis. Sell it soon after for $900,000, and you owe zero federal capital gains tax.

That's the power of the step-up. It erases decades of appreciation for tax purposes.

Why This Matters So Much in California

California is stepped-up basis country. Homes bought in the 1960s, 70s, and 80s have appreciated 10 to 20 times over. Without the step-up, heirs would face crushing capital gains bills.

A few California-specific things to know:

• California conforms to federal stepped-up basis. The state uses the same rule, so you get the step-up for both federal and state capital gains tax purposes.
• No state estate tax. California doesn't have its own estate or inheritance tax. Only the federal estate tax applies, and it only kicks in above roughly $13 million per person (2024 threshold, adjusted yearly).
• Proposition 19 changed property tax rules. This is separate from stepped-up basis. Prop 19, passed in 2020, limits when children can inherit a parent's low property tax assessment. If you don't move into the home as your primary residence within a year, the property gets reassessed at current market value. That means higher annual property taxes, even though your capital gains basis still steps up.

So the step-up saves you on income taxes when you sell. But Prop 19 might raise your property taxes if you hold. Two different rules, two different outcomes.

How to Establish the Stepped-Up Basis

You can't just guess the value. The IRS wants documentation. Here's what most California heirs do:

1. Order a date-of-death appraisal. Hire a licensed California appraiser to determine the home's fair market value as of the date the decedent passed. This is the gold standard. It costs a few hundred to over a thousand dollars but protects you if the IRS ever asks.
2. Keep the appraisal in your permanent records. Even if you don't sell for years, that document sets your basis forever.
3. Track improvements you make after inheriting. Anything you spend on capital improvements (not repairs) adds to your basis further.
4. Save closing documents from the eventual sale. Selling costs like commissions and title fees reduce your taxable gain.

If the estate went through probate, the probate referee's appraisal can sometimes serve as your date-of-death value. Ask the estate attorney which document to use.

What Happens If You Sell Right Away Versus Hold

Heirs generally have three options after inheriting a California home: move in, rent it out, or sell it. Stepped-up basis plays into each differently.

Sell soon after inheriting. This is the cleanest scenario. Your basis is the date-of-death value. Sale price minus that basis minus selling costs equals your gain. If you sell within a few months, the gain is often near zero. Many heirs end up owing little or no capital gains tax.

Hold and rent. You keep the step-up, but any appreciation from the date of death forward becomes taxable when you eventually sell. You'll also need to depreciate the property for rental purposes, which can trigger depreciation recapture down the road. And remember Prop 19: property taxes will likely reset.

Move in as your primary residence. After two years, you may qualify for the primary residence capital gains exclusion ($250,000 single, $500,000 married). Combined with the step-up, this can shelter a huge amount of appreciation. Prop 19 rules on inherited primary residences may also help keep the property tax low, but there are caps and conditions.

For many heirs living out of the area, selling the house shortly after inheriting is the simplest path. No landlord duties, no long-distance repairs, no Prop 19 reassessment surprise.

Common Mistakes California Heirs Make

A few traps we see over and over:

• Not getting a date-of-death appraisal. Years later, when you sell, you have no defensible basis. The IRS may assume the original purchase price.
• Assuming Prop 13 transfers automatically. It doesn't anymore. Prop 19 tightened the rules. If you're planning to hold, run the property tax math first.
• Splitting the home with siblings without a written agreement. Co-ownership with family sounds fine until someone wants to sell and another doesn't. Get terms in writing.
• Making repairs before understanding the market. A $40,000 kitchen renovation may not add $40,000 in resale value, especially if the home would sell as-is to an investor.
• Missing the trust deadline. If the property is in a trust, the trustee usually has a fiduciary duty to act reasonably fast. Delays can create liability.

If the home needs work, is full of belongings, or sits in a market like Fresno, Sacramento, or Riverside, heirs sometimes prefer a cash sale to avoid the cost and time of prepping for the retail market.

Steps to Take Before You Sell an Inherited California Home

Here's a practical order of operations:

1. Confirm title. Has the property transferred to you through probate, a trust, or a transfer-on-death deed? You can't sell what isn't legally yours yet.
2. Get the date-of-death appraisal.
3. Talk to a CPA familiar with California real estate. Even one hour of advice can save thousands.
4. Check for outstanding liens, reverse mortgages, or unpaid property taxes.
5. Decide on your selling path: list with an agent, sell to an investor, or hold.
6. Gather documents: death certificate, letters testamentary or trustee certification, deed, mortgage payoff info, tax bills.
7. Notify the county assessor after the sale so Prop 19 reassessment is handled correctly.

If you want to see how a simple cash sale timeline looks compared to a traditional listing, our process page walks through it step by step. When you're ready for an as-is offer on an inherited California home with no repairs and no cleanout required, Flipside Investments can take a look and give you a straightforward number to compare against your other options.

Inheriting property is rarely just about money. But understanding stepped-up basis puts you in control of one of the biggest financial decisions attached to it. Get the appraisal, know your options, and move at the pace that feels right.