How to Calculate Cost Basis for Inherited Real Estate

By Motley Fool Staff – Updated Apr 23, 2025 at 12:28 PM

Key Points

Inheriting real estate sets a new tax basis often equal to the property's value at the owner's death.
This adjusted basis can reduce the capital gains tax when the property is later sold.
Choosing an alternate valuation date may further lower estate taxes six months post-death.

Investing in real estate requires knowing many different tax rules, with some lucrative incentives that can dramatically lower your after-tax costs. Yet when you inherit real estate that you didn't initially purchase yourself, it can be a challenge to figure out the potential tax implications.

Fortunately, many of the complex tax rules governing real estate get somewhat easier to deal with in an inheritance situation. Let's take a closer look.

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A small house with a front yard in a suburban neighborhood. — Image source: Getty Images.

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It's easy to see how those records would be nearly impossible to obtain in an inheritance situation. Perhaps because of this, the tax law allows those who inherit real estate to set a new tax basis for the property. Specifically, the value of the property on the date of death of the person from whom you inherited the real estate becomes your new tax basis. This figure can be higher or lower than the previous tax basis; but regardless, it's the figure that you have to use when you inherit real estate.

There's one technical exception to this date-of-death rule. The estate tax rules allow the people handling the estate to choose what's known as an alternate valuation date for determining tax liability. This date falls six months after the date of death, and in some situations, using the alternate date dramatically reduces estate taxes. If the people handling the estate make that election, then your cost basis going forward will be the value of the property on that alternate date, rather than the date of death.