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Step-Up in Basis for Inherited Property: The Complete Explanation

The step-up in basis is one of the most valuable tax provisions affecting inherited real estate and one of the least understood by heirs and executors. It often reveals that selling inherited property shortly after inheriting has dramatically lower tax consequences than most people expect. This guide explains the step-up in basis factually and clearly. It is not tax advice — it is the factual foundation for an informed conversation with your CPA.

What Is the Step-Up in Basis?

Your basis in a property is your starting point for calculating capital gains. In a conventional purchase, your basis is what you paid. For inherited property, the tax code steps up your basis to the fair market value on the date of the previous owner’s death — not what they originally paid. Example: your parent paid $150,000 for a home in 1990. At their death in 2024 it is worth $700,000. Your basis: $700,000. If you sell for $720,000 your capital gain is only $20,000 — not $570,000 as it would be without the step-up. The step-up eliminates $550,000 of taxable gain that accrued during your parent’s lifetime. This is one of the most powerful tax benefits in the US tax code for inherited property owners.

Community Property vs. Non-Community Property States

The step-up treatment differs significantly by state: (1) Non-community property states (most states): the surviving spouse receives a step-up on the deceased’s share of jointly held property. Their own half retains its original basis. For a 50/50 jointly owned property: 50% steps up, 50% stays at original basis. (2) Community property states (California, Texas, Arizona, Nevada, Washington, Idaho, New Mexico, Wisconsin, Alaska opt-in): both halves of community property may receive a full step-up to date-of-death value. A California married couple who jointly own a home may have both halves stepped up when one spouse dies — meaning the survivor can sell with minimal capital gains on the entire appreciation. This is dramatically more favorable than the half-step-up in non-community property states.

Why Timing Matters: Sell Promptly to Maximize the Benefit

The step-up is calculated as of the date of death. Every day the property is held after death, any further appreciation is new taxable gain. Example: property worth $700,000 at death. Sell immediately: capital gain = price above $700,000 — likely minimal. Sell 2 years later after property appreciates to $780,000: capital gain = $80,000. The step-up benefit is maximized by a prompt sale. OLH provides date-of-death valuations — a retroactive BPO as of the date of death — to establish the stepped-up basis for estate tax and heir purposes.

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Frequently Asked Questions

What is the step-up in basis for inherited property?

The step-up in basis adjusts your tax basis in inherited property to the fair market value on the date of the previous owner’s death. Capital gains tax applies only to appreciation after the date of death, not to the gain that accrued during the deceased’s ownership. For most inherited property sold promptly after inheriting, this dramatically reduces or eliminates capital gains.

Do both spouses receive a step-up in basis on jointly owned property?

In non-community property states: typically only the deceased spouse’s half steps up. In community property states (CA, TX, AZ, NV, WA, ID, NM, WI, and Alaska opt-in): both halves may receive a full step-up, providing a significantly more favorable outcome. Consult a CPA in your state for specific guidance.

What is date-of-death valuation and why does it matter?

Date-of-death valuation is a retroactive market value opinion as of the date the property owner died. It establishes the stepped-up basis for heirs and is needed for estate tax calculations and probate court inventory filings. OLH provides date-of-death valuations in all 50 states within 7–10 business days.