What is the stepped-up cost basis for an inherited home, and how does it affect capital gains taxes?

Few concepts matter more to a family selling an inherited home, and few are less understood. Stepped-up basis is the reason an estate sale is usually a tax non-event, and it is also the reason an heir who sells too casually can miss out on documentation that protects the benefit. Worth five minutes for anyone who will sell a house they did not buy.

The reset explained

When you inherit a home, the tax basis, the number from which gain is measured, does not carry over from the person who died. It resets to the home's fair market value on the date of death. If Mom bought the house for $60,000 in 1985 and it was worth $600,000 when she passed, the heir's basis is $600,000, not $60,000. The decades of appreciation are simply erased for income tax purposes.

What it means for a sale

Sell that inherited home for $610,000 soon after the death, and the taxable gain is roughly $10,000, not $550,000. Most heirs selling an inherited home in Sacramento, El Dorado, or Placer counties within a reasonable time of the death face little or no capital gains tax, because the market does not move that much between the valuation date and the sale. It is the reason the 'tax bomb' families fear rarely materializes.

How the valuation is established

The benefit rests on the date-of-death value, so that value needs evidence: a professional appraisal, a probate referee's appraisal, or well-documented market data from the date. Keep that record with the estate file, because the IRS and the Franchise Tax Board can ask for it if the sale price deviates noticeably from the reported basis. This is one document family members should never lose.

Stepped-up basis versus reassessment

The income tax benefit is clean, and the property tax question is separate. Proposition 19 rules determine whether the inherited home keeps the parent's low property tax assessment or is reassessed to current value, depending on whether a child makes it their primary residence within the required time. Some heirs pay no capital gains tax and a much larger property tax bill. Both are planned together, which is what our inherited property tax guide explains side by side.

Confirm your numbers with a professional

Stepped-up basis applies generally, and each estate has details: community property rules can double the benefit for a surviving spouse, improvements made after death add to basis, and seller costs reduce gain. A tax professional pulls it together in one calculation. For the practical side of the sale, from clearing the home to pricing it, the article on selling an inherited property covers the decision that follows.