The fair market value of estate assets is the price each asset would change hands for between a willing buyer and a willing seller, with neither under pressure and both reasonably informed about the property.1eCFR. 26 CFR 20.2031-1 – Definition of Gross Estate; Valuation of Property That single standard governs everything in a decedent’s estate, from a checking account to a minority stake in a family company, and it drives probate accounting, the beneficiary’s future tax basis, and any federal estate tax owed.
Why the Number Matters
Fair market value does three jobs at once. It tells the probate court whether the executor is distributing assets equitably. It sets the beneficiary’s tax basis in the property, which determines how much capital gains tax they pay when they later sell. And it drives the federal estate tax return, which for decedents dying in 2026 is required when the gross estate plus adjusted taxable gifts exceeds $15,000,000.2Internal Revenue Service. Estate Tax
The basis effect is where valuation matters even for estates far below the filing threshold. Property acquired from a decedent takes a new basis equal to its fair market value on the date of death, replacing the decedent’s original cost.3Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent A home the decedent bought for $150,000 that is worth $600,000 at death gives the beneficiary a $600,000 basis. Sell it a month later for $620,000 and only $20,000 is taxable gain.
The adjustment runs both ways. If stock the decedent bought at $50 is worth $30 on the date of death, the beneficiary’s basis steps down to $30. A later sale at $40 produces a $10 gain even though the decedent lost money on the position. The IRS applies the date-of-death value regardless of whether it is higher or lower than what the decedent paid.4Internal Revenue Service. Gifts and Inheritances
The Valuation Date
The default rule is simple: value every asset as of the exact calendar date the person died. That snapshot captures market prices, property condition, and economic circumstances at the moment ownership legally shifts.
The Six-Month Alternate Date
The executor can elect to value the entire estate six months after the date of death. The election exists to protect estates from paying tax on values that collapsed after death, and it is only available when two conditions are both met: the gross estate value must be lower at the six-month mark, and the total estate and generation-skipping transfer taxes must also decrease.5Office of the Law Revision Counsel. 26 USC 2032 – Alternate Valuation
Assets sold, distributed, or otherwise disposed of during the six-month window are valued as of the date they left the estate. Everything still in the estate at the six-month anniversary is valued on that date. The election covers every asset (no cherry-picking), is irrevocable, and must be made on the estate tax return. It disappears entirely if the return is filed more than a year after its due date, including extensions.
One tradeoff often gets missed. The alternate date also resets each asset’s stepped-up basis. Choosing the later date to shrink estate tax may hand beneficiaries a lower basis and a bigger capital gains bill down the road. Run both scenarios before electing.
How to Value Each Type of Asset
Each asset class has its own valuation method, and the IRS expects executors to use the method that matches the property. Most audit trouble starts with the wrong methodology or thin documentation.
Real Estate
Real property almost always requires a formal appraisal by a licensed professional who works from recent comparable sales, the property’s condition, local market trends, and any easements or zoning restrictions. When the decedent owned only a partial interest, the appraised value of the whole is reduced by a fractional interest discount reflecting lack of control and the difficulty of selling a partial stake. Those discounts often fall in the 25 to 35 percent range, and the IRS scrutinizes them closely, so a qualified appraisal is essential.
Farm land and closely held business real estate may qualify for special use valuation under IRC 2032A. Instead of valuing the parcel at its highest and best use (development land, for example), the executor can value it based on its actual farm or business use, potentially reducing the taxable estate by up to the inflation-adjusted statutory limit that started at $750,000 in 1997 dollars.6Office of the Law Revision Counsel. 26 USC 2032A – Valuation of Certain Farm, Etc., Real Property The property must have been actively used in farming or the business for at least five of the eight years before death, with material participation by the decedent or family. A recapture tax hits if the heir stops the qualifying use within 10 years.
Publicly Traded Stocks and Bonds
For securities with an active market, the value is the average of the highest and lowest quoted selling prices on the date of death.7eCFR. 26 CFR 20.2031-2 – Valuation of Stocks and Bonds If the market was closed that day, you take a weighted average of the mean prices from the nearest trading days before and after, weighted inversely by how many trading days separate each sale date from the valuation date. Brokerage statements usually will not do that math, so the executor or accountant has to pull the trading data.
Household Goods, Personal Effects, and Collectibles
Ordinary household goods and personal effects are grouped and valued in the aggregate at what they would bring at auction or in a secondhand sale. Items with real artistic or intrinsic value (jewelry, paintings, antiques, coin collections, and the like) totaling more than $3,000 require a sworn appraisal from a qualified expert, filed with the estate tax return along with an executor’s statement confirming the inventory is complete and the appraiser is qualified.8eCFR. 26 CFR 20.2031-6 – Valuation of Household and Personal Effects Vehicles are typically valued using widely accepted industry pricing guides that account for mileage, condition, and regional differences.
Closely Held Businesses and Private Equity
Private company interests are among the hardest assets to value because no public market sets the price. The appraiser looks at several years of financial statements, earnings capacity, book value, and the industry outlook. Minority stakes receive discounts for lack of control (the owner cannot force a sale or change management) and lack of marketability (there is no exchange to sell into). Combined discounts can be substantial, but the IRS challenges them aggressively, so the analysis needs to be thorough and well-documented.
Digital Assets
Cryptocurrency and other digital assets are treated as property for federal tax purposes, so the same fair market value rules apply.9Internal Revenue Service. Digital Assets The executor determines the dollar value on the date of death (or alternate date) using a reputable exchange, and should document which exchange was used and why the price is reasonable, since quotes vary between platforms. Access is the practical hurdle: if the decedent left no wallet passwords or private keys, the coins may exist on the blockchain but be unreachable.
Life Insurance
Life insurance the decedent owned on their own life is included at the death benefit payable. The insurance company reports that figure on IRS Form 712, which the executor files with Form 706.10Internal Revenue Service. Form 712 – Life Insurance Statement For a policy the decedent owned on someone else’s life, the value is the interpolated terminal reserve (roughly the policy’s cash value) plus any prepaid premiums, less outstanding policy loans. In both cases the insurance company completes Form 712 at the executor’s request.
What the IRS Requires of an Appraiser
Not any appraisal will hold up. Federal regulations require a qualified appraiser to have verifiable education and experience in valuing the specific type of property at issue.11eCFR. 26 CFR 1.170A-17 – Qualified Appraisal and Qualified Appraiser That means either professional or college-level coursework in valuing that property type plus at least two years of relevant experience, or a recognized appraiser designation for that property category.
The appraisal itself must follow the Uniform Standards of Professional Appraisal Practice, which the IRS treats as the benchmark for generally accepted appraisal standards. Two other rules trip people up. The appraiser’s fee cannot be tied to the appraised value, so a percentage-of-value fee automatically disqualifies the appraisal. And if the appraiser has been barred from practicing before the IRS at any point during the three years before signing, the whole appraisal is disregarded.
What Happens If the Value Is Wrong
The IRS imposes a 20 percent accuracy-related penalty when the value claimed on a return is 150 percent or more of the correct value, and doubles it to 40 percent when the overstatement hits 200 percent or more.12Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments These penalties reach both overstatements (which reduce estate tax) and understatements (which reduce a beneficiary’s reported basis). A qualified appraisal from a credentialed professional is the strongest defense against either.
There is also a portability trap for surviving spouses. A surviving spouse can inherit the deceased spouse’s unused estate tax exemption, but only if a timely Form 706 is filed, even when the estate falls well below the filing threshold and owes no tax. Miss the deadline and the surviving spouse permanently loses access to that unused exemption, which can cost the family millions when the survivor eventually dies.
Documentation to Gather Before You Appraise
Pulling records together early makes valuation faster and cheaper. Start with:
- Property deeds with full legal descriptions, recent tax assessments, and any prior appraisals or surveys for each parcel of real estate.
- The most recent statements from banks, brokerage firms, and retirement accounts, with full account numbers and institution names.
- Several years of profit-and-loss statements, balance sheets, partnership or operating agreements, and any prior valuations for business interests.
- Photographs, purchase receipts, certificates of authenticity, and insurance riders for high-value personal property.
- Policy documents and insurer contact information so you can request Form 712 for each life insurance policy.
- Exchange account details, wallet addresses, and any credentials or private keys for digital assets.
On Form 706 itself, real estate must be identified by the full legal description recorded on the deed, not just a street address, and financial instruments need complete account numbers and institution names.13Internal Revenue Service. Instructions for Form 706 Vehicles are listed on Schedule F among the decedent’s personal effects; the federal instructions do not require VINs or odometer readings, though some state probate courts do.
When Values Get Challenged
Beneficiaries, creditors, and other interested parties who believe the executor’s numbers are off can ask the probate court to review and revise the estate’s accounting.14Justia. Litigation Against the Executor and Legal Options The challenger typically has to show that a specific asset was materially over- or undervalued, which usually means hiring an independent appraiser to produce a competing report. Courts take these challenges seriously because bad valuations can shortchange a beneficiary’s share or hide a breach of fiduciary duty.
On the federal side, the IRS can challenge any value reported on Form 706 during examination. If the agency proposes a higher figure, the executor can negotiate, submit additional documentation, or litigate in Tax Court. A defensible appraisal from a qualified professional at the outset is the single best protection against both kinds of dispute, and it is far cheaper than fighting the fight later.