Selling an Inherited House: Capital Gains Tax Rules and Planning Guide

The stepped-up basis: your largest tax benefit

Under IRC §1014, when you inherit property, your cost basis is not what the decedent paid for the home. It is the fair market value of the property on the date of death.¹ Any appreciation that occurred during the decedent's entire ownership period—sometimes 20, 30, or 40 years of gains—is permanently excluded from your taxable income. This is commonly called the "step-up in basis."

This benefit does not require any action on your part. It happens automatically under federal law. However, you do need to document it. A formal appraisal of the property—ordered at or near the date of death—establishes the stepped-up basis for tax purposes. Without third-party documentation, the IRS can challenge any basis claim you make on the eventual sale. If the estate attorney or executor hasn't already ordered an appraisal, request one now, even if you plan to hold the property for several years.

Alternate valuation date

The estate representative may elect to value all estate assets as of six months after the date of death, rather than the actual date of death—but only if both total estate value and the estate tax due decreased over that period. This is called the alternate valuation date under IRC §2032.² If it applies, your stepped-up basis would be the property's value at that later date, which could be higher or lower depending on the real estate market. This election is made by the estate, not by you individually. Confirm with the estate representative which date was used before filing your own tax return.

Jointly held property

If the home was held jointly between the decedent and a surviving spouse as joint tenants with right of survivorship (JTWROS), only the decedent's half receives a step-up—the surviving spouse's half retains its original basis. In community property states (AZ, CA, ID, LA, NV, NM, TX, WA, WI), both halves of community property receive a full step-up at the first spouse's death, which is significantly more favorable. If you are a surviving spouse in a community property state, confirm with your CPA whether the home qualifies for a full double step-up.

Automatic long-term holding period (§1223)

Under IRC §1223(11), inherited property is automatically treated as long-term capital property, regardless of how long you personally hold it after the date of death.¹ You do not need to wait one year from the date you inherited the home to qualify for long-term capital gains rates. Whether you sell one month after inheriting or five years later, the gain is long-term and taxed at 0%, 15%, or 20%—not at ordinary income rates.

This is a meaningful benefit for heirs who need to sell quickly. There is no tax incentive to hold inherited property for more than a year just to achieve long-term treatment—you already have it from the moment you inherit.

Calculating your taxable gain and the 2026 tax cost

The taxable gain on the sale is straightforward to calculate:

Most heirs who sell within a year of inheriting find that after selling costs, the taxable gain is minimal. The step-up largely or entirely eliminates the capital gains bill if you sell reasonably promptly after inheriting.

If the property appreciated significantly between the date of death and your sale date, the gain on that post-inheritance appreciation is taxed at the following 2026 long-term capital gains rates (per IRS Rev. Proc. 2025-32):³

The 3.8% Net Investment Income Tax (NIIT) applies on top of LTCG rates for taxpayers with MAGI exceeding $200,000 (single) or $250,000 (married filing jointly).⁴ The effective top rate for a high-income seller is 23.8% (20% + 3.8% NIIT). Selling costs reduce your gain and are fully deductible from the amount realized, which is why a detailed closing statement matters for tax purposes.

Does the §121 exclusion apply to inherited homes?

The primary-residence exclusion under IRC §121 can apply to inherited property—but only if you independently meet the ownership and use tests. §121 allows a taxpayer to exclude up to $250,000 (single) or $500,000 (married filing jointly) of gain on a home sale if they owned the property and used it as their principal residence for at least 2 of the last 5 years before the sale.⁵

For a non-spouse heir, the clock starts when you inherit the property. If you move into the home and live there as your primary residence for two full years, you can qualify for §121. The automatic long-term holding period from §1223(11) satisfies the capital gains holding requirement, but it does not satisfy §121's distinct two-year ownership-and-use test.

For most heirs who sell promptly, the §121 exclusion is not needed—the step-up in basis already eliminates most or all of the gain. The exclusion becomes relevant if you hold the inherited home for years, accumulate new post-inheritance appreciation, and then decide to sell after living there as your primary residence.

Inherited rental property: what happens to depreciation?

If the home you inherited was previously used as a rental property by the decedent, you might expect to owe the 25% unrecaptured §1250 depreciation recapture tax that normally applies when a landlord sells. The good news: the §1014 step-up effectively resets that obligation.

Here is why: the decedent's basis had been reduced by all the depreciation they claimed over the years. Your stepped-up basis is the property's fair market value at death—typically far higher than the decedent's depreciated basis. Your gain calculation starts from that stepped-up FMV. Unless you personally rent out the property after inheriting it and claim your own depreciation deductions, there is no §1250 recapture on your eventual sale. The decedent's accumulated depreciation does not carry over to you.¹

Multiple heirs and the tenants-in-common sale

When multiple people inherit a property—siblings, for example—each heir typically owns a fractional undivided interest as tenants in common (TIC). Each heir has their own stepped-up basis in their proportionate share, their own holding period, and their own tax return obligation for the gain.

In most cases, all co-owners must agree to sell. If one heir wants to sell and others do not, the dispute can escalate to a partition action, which is a court process that can force a sale—but it is slow, expensive, and damages family relationships. Proactive communication among heirs before the estate closes avoids this scenario.

Practical considerations for multi-heir sales:

• Confirm each heir's ownership percentage and basis before listing. The estate representative should document this.
• All heirs report their proportionate share of the gain on their individual tax returns—there is no single shared return for the sale.
• If heirs have different income levels, the federal tax cost varies by person (one heir might be in the 0% LTCG bracket; another in the 20% bracket).
• A buyout is an alternative to a third-party sale: one heir buys out the others' interests. The buyout price is treated as a sale for each departing heir and a basis establishment for the buyer.

IRMAA exposure: Medicare premiums two years later

If you are on Medicare, or will turn 65 within two years of the sale, a large capital gain from selling inherited property can trigger Medicare IRMAA surcharges that arrive two years after the event. The Social Security Administration sets your Medicare Part B and Part D premiums based on MAGI from two years prior.⁶

2026 Medicare Part B IRMAA tiers (based on 2024 MAGI):

A gain of $300,000 from selling an inherited home that appreciated post-inheritance would spike MAGI for the year of sale. Even though the IRMAA impact arrives two years later, the planning window is the current tax year. If the gain is large, a charitable strategy (donating appreciated property to a DAF before sale, if feasible) or installment sale structure could reduce the MAGI impact. A fee-only advisor can model the IRMAA tier for the sale year before closing occurs.

Estate expenses and tax deduction choices

Costs paid in connection with administering the estate—executor fees, attorney fees, appraisal costs, maintenance and property taxes paid by the estate during administration—may be deductible. Under IRC §642(g), these expenses can be claimed on the estate's Form 706 (estate tax return) or on the estate's Form 1041 (income tax return)—but not both.⁷

For most estates below the $15 million federal exemption, there is no estate tax return. In that case, deductible estate administration expenses related to the inherited property (appraisals, title search costs, maintenance costs while the estate is open) may reduce the income taxable gain on the sale if incurred in connection with the sale itself. Consult a CPA for your specific facts—the interaction between estate and income tax rules here is precise.

First 90 days: a plan for inherited real estate

1. Order a date-of-death appraisal immediately. Even if you are not ready to sell, a formal appraisal by a licensed appraiser establishes your stepped-up basis. The IRS can challenge basis claims without third-party documentation. A retroactive appraisal is harder to defend than one ordered at or near the date of death.
2. Confirm title transfer status with the estate attorney. The home cannot be sold until title transfers from the decedent's estate to the heir(s). If it is in probate, this can take months. If it was in a revocable trust, transfer can occur within days. Know where you are in the process before marketing the property.
3. Identify all co-owners and align on timing. Multi-heir disagreements over sell vs. hold, price, and timing are one of the most common sources of conflict in estates. Have the conversation early, document the agreement, and bring in the estate attorney if positions diverge.
4. Understand the property's tax history if it was a rental. Request the decedent's last few Schedule E returns from the estate or their accountant. Confirm the decedent's depreciation history—this affects whether you should take any depreciation if you decide to rent before selling, and confirms that §1250 recapture is not a concern if you sell without renting.
5. Model the IRMAA impact before closing. If you are on Medicare, calculate what adding the gain to your MAGI does to premiums two years out. For a large gain, the difference can be several thousand dollars per year. This is a planning input, not a reason to delay the sale—but it belongs in your tax estimate before you accept an offer.
6. File estimated taxes if the gain is large. Capital gains from a real estate sale are not subject to withholding. If the taxable gain pushes your income significantly above your prior-year return, you may need to make estimated tax payments to avoid an underpayment penalty. The safe harbor is 110% of prior-year tax if your AGI exceeds $150,000.

What a fee-only advisor does for inherited property sales

The stepped-up basis rule largely solves the capital gains problem for heirs who sell promptly. The remaining planning value is in the details:

• Appraisal review and basis documentation: Confirm the appraisal methodology is defensible and that the basis is correctly reflected in the closing statement and your tax filing.
• IRMAA tier planning: Model whether the gain crosses an IRMAA threshold and whether any legitimate strategies (installment sale structure, charitable vehicle, timing) reduce the exposure for Medicare-age heirs.
• Proceeds deployment: A large lump sum from a home sale needs to be invested according to a written investment policy—not reactive decisions under time pressure. The same windfall planning principles that apply to a business sale or legal settlement apply to inherited real estate proceeds.
• Estate integration: An inherited home sale that produces $500K–$1M in proceeds can materially change the heir's balance sheet, estate plan, and income tax picture simultaneously. A fee-only advisor coordinates the plan across CPA, estate attorney, and investment decisions.

Get matched with a fee-only advisor for inherited property

Selling an inherited home is usually a one-time event with a relatively short decision window. Getting the basis documentation right, understanding the IRMAA exposure, and building a plan for the proceeds can prevent costly mistakes that can't be undone after closing.

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