The Golden Rule: Fair Market Value at Date of Death
One principle governs every inherited asset — regardless of type, size, or how it passes to heirs.
The IRS defines fair market value in Treasury Regulation §20.2031-1(b) as:
"The fair market value is the price at which the property would change hands between a willing buyer and a willing seller, neither being under any compulsion to buy or to sell, and both having reasonable knowledge of relevant facts."
Three things this definition explicitly excludes: what the deceased paid for the property (original purchase price); the insurance replacement value; and any forced-sale or distressed-sale price. Three things it measures: what a real market transaction would produce; between two informed, willing parties; on the specific date of death.
Why date of death matters — not the date of the appraisal
The valuation must reflect the property's value as of the date of death — not when the appraisal is conducted (which might be weeks or months later) and not when the property is ultimately sold. In a rising market, this distinction works in heirs' favor — the basis is set on the date of death, before additional appreciation accrues. In a falling market, an estate might have a basis higher than the eventual sale price, creating a capital loss. Appraisers conducting retroactive date-of-death appraisals look at comparable sales data from around the date of death, not current comparables.
Why This Matters: The Stepped-Up Basis
The date-of-death fair market value becomes the heir's cost basis in the property. This is one of the most valuable tax provisions in the U.S. tax code.
Stepped-Up Basis Tax Impact Calculator
See how much the stepped-up basis saves you compared to the alternative — and how your eventual sale price affects your tax liability.
📊 Stepped-Up Basis Calculator
Enter the property's original cost, date-of-death value, and eventual sale price to see tax impact.
Valuation Methods by Property Type
Different assets require different approaches. Here's the accepted method for each category.
The primary method for residential real estate is the sales comparison approach — finding recent sales of similar properties (comparables or "comps") near the subject property and adjusting for differences in size, condition, location, features, and amenities. A licensed appraiser identifies 3–6 comparable sales from as close to the date of death as possible.
Retroactive appraisal: Most estate appraisals are done weeks or months after death. The appraiser uses sales data from around the date of death to establish value as of that date — MLS records and county recorder data provide the historical transaction data needed.
CMA alternative: For non-estate-tax estates, a written Comparative Market Analysis from a licensed real estate agent may satisfy probate inventory requirements. This is less formal and less defensible than a certified appraisal but is accepted in many courts for simple estates. Always get a full USPAP-compliant appraisal if estate tax is possible.
Income-producing properties (apartment buildings, commercial retail, office) are typically valued using the income capitalization approach — dividing the property's net operating income (NOI) by the appropriate capitalization rate (cap rate) for the property type and market. The cap rate reflects current market expectations for that class of property.
The formula: FMV = Net Operating Income ÷ Cap Rate. For a property generating $120,000 in annual NOI with a 6% cap rate: $120,000 ÷ 0.06 = $2,000,000 FMV. The appraiser establishes both the NOI and the appropriate cap rate based on comparable transactions.
Commercial appraisals are more expensive ($2,000–$10,000+) and require an appraiser certified for commercial property (MAI designation preferred). Allow 4–8 weeks for a commercial appraisal.
For publicly traded stocks, bonds, and mutual funds, the IRS specifies the exact formula in IRS Publication 559: the FMV is the mean (average) of the highest and lowest quoted selling prices on the date of death. If the date of death falls on a weekend or holiday when markets are closed, use the average of the mean prices on the nearest trading day before and the nearest trading day after.
Example: On the date of death, a stock traded with a high of $52.00 and a low of $48.00. The FMV per share is ($52.00 + $48.00) ÷ 2 = $50.00. Multiply by the number of shares owned to get the total FMV. For mutual funds, use the net asset value (NAV) on the date of death.
Bank accounts, CDs, and money market accounts are valued at the exact balance on the date of death, as shown on the bank's official records. This is straightforward: request a statement from each financial institution confirming the exact balance as of the date of death, and keep that statement for the estate inventory.
For certificates of deposit (CDs) that would incur an early withdrawal penalty if cashed out, the IRS allows the FMV to be reduced by the penalty amount that would be incurred — reflecting what a willing buyer would pay for the instrument after accounting for the penalty cost.
Privately held business interests — LLC memberships, partnership interests, S-corp stock, sole proprietorship assets — cannot be valued by market price because there is no active market. Business valuation uses one or more recognized approaches: income approach (discounted cash flow or capitalized earnings), market approach (comparable company transactions), or asset approach (adjusted book value).
Business valuation is the most complex and most contested type of estate valuation. IRS scrutiny is high; discounts for lack of marketability (DLOM) and lack of control (DLOC) are significant issues the IRS may challenge. A Certified Valuation Analyst (CVA) or Accredited in Business Valuation (ABV) designation is expected for any business interest valuation used in an estate tax return.
Tangible personal property with significant value — jewelry, fine art, antiques, collectibles, firearms collections, wine collections — requires appraisal by a qualified specialist. The appraiser must hold appropriate credentials for the specific category: gemologist-appraiser (GIA, ASA) for jewelry; fine art appraiser (ASA, AAA) for artwork; antique appraiser for furniture and collectibles.
For ordinary household furnishings with no individual item of significant value, a reasonable grouped estimate is acceptable for the probate inventory ("Household furnishings and effects — $4,500"). For items individually worth over $1,000–$3,000, list separately with an individual appraisal or documented estimate.
Valuation Requirements by Asset Type — Quick Reference
| Asset Type | Valuation Method | Documentation Required | Appraiser Credential |
|---|---|---|---|
| Primary residence / vacation home | Licensed appraisal (USPAP) | Certified appraisal report; must reference date of death | State-licensed or certified residential appraiser |
| Residential real estate (non-estate-tax) | CMA or appraisal | Written CMA from licensed agent; or appraisal report | Licensed real estate agent (CMA); appraiser (appraisal) |
| Commercial / income property | Licensed appraisal (USPAP) | Certified appraisal with income approach analysis | MAI-designated or state-certified general appraiser |
| Publicly traded stocks / ETFs | Mean of high/low price | IRS formula: (High + Low) ÷ 2 × shares; brokerage statement | No appraiser needed — use IRS formula |
| Mutual funds | Net asset value (NAV) | NAV on date of death from fund company; brokerage statement | No appraiser needed — statement sufficient |
| Bank accounts / CDs / money market | Account balance at death | Official bank statement as of date of death | No appraiser needed — bank statement |
| IRA / 401(k) / retirement accounts | Account value at date of death | Plan statement as of date of death from custodian | No appraiser needed — custodian statement |
| Life insurance (estate as beneficiary) | Cash surrender value or death benefit | Insurer confirmation of value / death benefit amount | No appraiser needed — insurer documentation |
| Vehicles (cars, trucks, boats) | NADA / KBB private party value | Printed KBB or NADA value in applicable condition; date-of-death vehicle condition documented | No formal appraiser; licensed dealer opinion for unusual vehicles |
| Business interests / private stock | Business valuation report | Full valuation report with methodology; DLOM/DLOC analysis | CVA, ABV, or ASA — business valuation specialty |
| Jewelry / gems | Gemological appraisal | Written appraisal with item description, condition, FMV | GIA graduate gemologist; ASA-certified appraiser |
| Fine art / antiques | Specialist appraisal | Written appraisal with provenance, condition, comparable sales | ASA or AAA certified fine art/antiques appraiser |
| Household furnishings (ordinary) | Reasonable grouped estimate | Written estimate; for significant items, individual listing | No formal appraiser for ordinary goods |
| Notes receivable / promissory notes | Present value of future payments | Note terms; calculation of PV discounted at market rate | CPA or estate attorney can prepare; formal appraiser for complex notes |
The Alternate Valuation Date: When Markets Drop After Death
Under Internal Revenue Code §2032, the executor of a taxable estate (one filing Form 706) can elect to value the estate at the alternate valuation date — six months after the date of death — rather than the date of death, if two conditions are met: (1) the election would reduce the gross estate value; and (2) it would reduce the estate tax liability. Both conditions must be satisfied — you can't use the election just because values dropped if the estate isn't taxable.
The alternate valuation election affects all assets in the estate — you cannot selectively apply it to some assets and use date-of-death value for others. Assets sold or distributed during the six-month period are valued at their sale or distribution date rather than the six-month date.
Important caveat for stepped-up basis: If the alternate valuation date is elected and results in lower values than the date-of-death values, the stepped-up basis for the beneficiaries is also lower — meaning they'll pay more capital gains tax when they eventually sell. The estate saves estate tax; the heirs pay more capital gains later. This tradeoff requires analysis — typically a CPA or estate tax attorney should model the scenarios before making this election.
The Cost of Getting It Wrong: Undervaluation Penalties
The IRS takes estate and gift tax valuation seriously — both because errors are common and because the stakes are high. Under IRC §6662, accuracy-related penalties apply when the value reported on the estate tax return understates the actual fair market value:
Gross valuation misstatement (IRC §6662(h)): If the value reported is 40% or less of the actual FMV — a 60%+ understatement — the penalty jumps to 40% of the underpayment.
Avoiding penalties: The penalty is avoided if the taxpayer had reasonable cause and acted in good faith. A qualified appraisal by a qualified appraiser, obtained in good faith, is the primary protection against penalties. This is why getting a real appraisal matters — not to game the numbers, but to have a defensible position.
What the IRS looks for in estate valuations
The IRS Estate Tax Examination group regularly audits large estates, and one of the first things auditors examine is the valuation of real property, business interests, and other non-cash assets. Red flags that attract scrutiny: values that are significantly below comparable sales data; appraisals that don't meet USPAP standards; appraisers who specialize in low valuations; and large discounts (DLOM, DLOC) on minority business interests without adequate support. A well-documented appraisal by a credentialed, independent appraiser is the single best defense.
How to Find a Qualified Estate Appraiser
Not every licensed appraiser is qualified for estate work. Here's what to look for.
Where to find qualified appraisers
- Appraisal Institute member directory — find MAI-designated appraisers for commercial and complex residential properties
- American Society of Appraisers (ASA) — covers real property, business, personal property (jewelry, art, machinery)
- Your probate attorney — attorneys who regularly practice probate in your county know which appraisers the local courts and IRS accept without challenge
- California Probate Referee list — in California, probate referees are court-appointed appraisers; the court assigns one, or you can request a specific referee from the court's approved list
Frequently Asked Questions
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