Qualified Appraisal Requirements for Estate Tax Returns

Estates that must file Form 706 have to back the numbers on the return with credible valuations, and for anything without a public market price the IRS expects a qualified appraisal. The qualified appraisal requirements for estate tax returns cover who prepares the report, what the report says, which assets require one, and how it attaches to the return. Get those four pieces right and the filing has a solid foundation. Miss any of them on a significant asset and the return becomes an invitation to audit.

The federal filing threshold is $15,000,000 in 2026.¹ Every asset on the return is measured at fair market value, defined as the price a willing buyer would pay a willing seller when neither is under pressure and both have reasonable knowledge of the relevant facts.² A forced-sale price does not count. Neither does a price drawn from a market the item would not normally sell in.

Which Assets Require an Appraisal

Not everything on Form 706 needs a sworn appraisal, but the regulations and instructions draw firm lines in several places.

Household and personal effects with artistic or intrinsic value. If items such as jewelry, paintings, antiques, coin collections, oriental rugs, or similar property have a combined value exceeding $3,000, a sworn expert appraisal must be filed with the return. The executor must also provide a statement under penalty of perjury confirming the itemized list is complete and that the appraiser is disinterested and qualified.³
Real estate. The Form 706 instructions require the executor to explain how values were determined and to attach any appraisals. In practice, real property of meaningful value needs an appraisal to survive IRS review.⁴
Closely held business interests. Stock in inactive or close corporations goes on Schedule B; partnership interests and LLCs go on Schedule F. Both require full details and values determined under the applicable valuation regulations.⁴
Artwork above $150,000. Individual works over that threshold are generally referred to the IRS Commissioner’s Art Advisory Panel for review.⁵
Life insurance. Value is established using Form 712, completed by the insurance company rather than an outside appraiser.⁶

The working rule: if an asset cannot be priced by pulling a public market quote, plan on a professional appraisal.

Who Counts as a Qualified Appraiser

The estate tax regulation for household effects requires only “an expert or experts, under oath,” plus a statement that the expert is disinterested and qualified.³ That is thinner language than the charitable-contribution rules in Treasury Regulation 1.170A-17, but the IRS expects estate tax appraisals to meet the same professional standard, and most practitioners use the charitable framework as their baseline.

Under that framework the appraiser needs verifiable education and experience in the specific type of property being valued, usually shown through a professional designation from a recognized organization such as the American Society of Appraisers or the Appraisal Institute. The appraiser must regularly perform appraisals for compensation, and the work should be consistent with the Uniform Standards of Professional Appraisal Practice developed by the Appraisal Foundation.⁷

Independence is non-negotiable. The appraiser cannot be the executor, a beneficiary, the person who originally transferred the property to the decedent, or a family member of the donor or recipient. Anyone previously barred from practice before the IRS is also disqualified. An appraiser who fails on independence or credentials gives the IRS an easy basis to throw out the entire valuation.

What the Appraisal Report Must Contain

The report has to give the IRS enough information to follow the appraiser’s reasoning without redoing the work. A defensible report includes:

A description of the property covering physical condition, unique characteristics, legal restrictions on sale or use, and any agreements affecting it.
The valuation date, stated clearly as either the date of death or the alternate valuation date.
The methodology used, whether market-based, income-based, or cost-based, and why that approach fits the asset.
Supporting data: comparable sales with dates and specific similarities to the estate asset, financial projections, or other evidence relied upon, in enough detail that another appraiser could follow the same steps.
The appraiser’s name, address, taxpayer identification number, and a summary of qualifications.
A signed declaration acknowledging the penalties for intentional valuation misstatements, which turns the report into a sworn document.

If the appraisal applies any valuation discounts, the report must explain the rationale for each one separately. Marketability, control, restrictions on transfer, and the legal form of ownership all belong in the analysis.⁸ Generic references to “industry-standard discounts” without property-specific reasoning are exactly what triggers deeper review.

The Valuation Date the Appraisal Must Use

The default is the date of death. The executor can instead elect an alternate valuation date six months later, but only if the election reduces both the gross estate and the total estate tax liability.⁹ Any asset sold, distributed, or otherwise disposed of during that six-month window is valued as of the disposition date, not the six-month mark.¹⁰ The election is irrevocable once made, and it cannot be made at all if the return is filed more than one year after the due date including extensions. Whichever date applies, the appraisal has to state it explicitly and value the asset as of that date.

Closely Held Businesses and Valuation Discounts

Business interests without a public market price carry the entire argument through the appraisal itself, and the IRS scrutinizes them accordingly. The framework in Revenue Ruling 59-60 requires the appraiser to weigh the nature and history of the business, general economic and industry conditions, book value and financial condition, earnings capacity, dividend-paying capacity, goodwill and intangibles, prior stock transactions, and the market prices of comparable companies.

Two adjustments draw the most attention: the minority interest discount, which reflects reduced control for a non-controlling owner, and the discount for lack of marketability, which accounts for the difficulty of quickly converting a private business interest to cash. The IRS defines marketability as the ability to quickly convert property to cash at minimal cost with a high degree of certainty about the proceeds.¹¹

Courts accept both discounts when they are grounded in the specific facts of the business rather than pulled from generic studies. The Tax Court in Mandelbaum v. Commissioner laid out factors including dividend history, transferability restrictions, redemption policy, management structure, and the estimated holding period before a buyer could realize a profit.¹¹ An appraiser who applies a 30% marketability discount without walking through the relevant factors hands the IRS a reason to reject the report.

Penalties When the Appraisal Is Wrong

The IRS uses a two-tier penalty structure, and the thresholds are lower than many executors expect. If the reported value is 65% or less of the correct value, the executor owes 20% of the resulting tax underpayment. If the reported value is 40% or less of the correct value, the penalty doubles to 40%.¹² A concrete example: real property worth $2,000,000 reported at $1,200,000 lands at 60% of correct value, triggering the 20% penalty on the additional tax owed.

Appraisers face their own exposure. Under Section 6695A, an appraiser who knew or should have known the appraisal would be used on a tax return, and whose valuation leads to a substantial or gross misstatement, owes a penalty equal to the greater of 10% of the tax underpayment attributable to the misstatement or $1,000, capped at 125% of the fee received.¹³ The appraiser avoids the penalty only by showing the reported value was more likely than not correct. Reputable appraisers insist on thorough documentation for that reason: the report is their own defense.

Attaching the Appraisal to Form 706

Form 706 is due nine months after the date of death. Filing Form 4768 before that deadline grants an automatic six-month extension with no explanation required.⁴

Appraisals attach to the schedule that matches the asset. Real estate goes with Schedule A, along with a written explanation of how values were determined. Items with artistic or intrinsic value exceeding $3,000 need a sworn appraisal attached to Schedule F, together with the executor’s perjury-penalty statement about the appraiser’s qualifications and disinterested character. Closely held business stock goes on Schedule B; partnership interests and LLCs go on Schedule F with full financial details.⁴ Life insurance values come in on Form 712 from the carrier.⁶

If documentation looks incomplete or a valuation questionable, the IRS will request more substantiation. That request can escalate into a formal examination where government valuation experts review the methodology and data. Keeping the original appraisal, comparable-sales data, financial statements, and correspondence with the appraiser in an organized file makes those responses far easier.

How Long the Appraisal Has to Hold Up

The IRS generally has three years from the filing date, or the due date if later, to assess additional estate tax. That window extends to six years if the return omits items exceeding 25% of the gross estate reported. Items disclosed on the return or an attached statement with enough detail to alert the IRS to their nature and amount do not count as omissions for the extended period.¹⁴ A fraudulent return has no time limit at all.

This is where a thorough appraisal report pays off a second time. Complete descriptions, clear methodology, and identified comparables function as adequate disclosure. A report that gives only a bottom-line number leaves the door open for the IRS to argue the asset was never properly disclosed, and to come back on the longer runway.

1
Internal Revenue Service. Estate Tax
2
eCFR. 26 CFR 20.2031-1 Definition of Gross Estate; Valuation of Property
3
eCFR. 26 CFR 20.2031-6 Valuation of Household and Personal Effects
4
Internal Revenue Service. Instructions for Form 706 (Rev. September 2025)
5
Internal Revenue Service. Art Appraisal Services
6
Internal Revenue Service. About Form 712, Life Insurance Statement
7
Internal Revenue Service. Guidance Regarding Appraisal Requirements for Noncash Charitable Contributions (Notice 2006-96)
8
Internal Revenue Service. IRM 4.48.6 Real Property Valuation Guidelines
9
GovInfo. 26 USC 2032 Alternate Valuation
10
Internal Revenue Service. Revenue Procedure 98-34
11
Internal Revenue Service. Discount for Lack of Marketability (DLOM) Job Aid for IRS Valuation Professionals
12
Office of the Law Revision Counsel. 26 USC 6662 Imposition of Accuracy-Related Penalty on Underpayments
13
Office of the Law Revision Counsel. 26 USC 6695A Substantial and Gross Valuation Misstatements Attributable to Incorrect Appraisals
14
Office of the Law Revision Counsel. 26 USC 6501 Limitations on Assessment and Collection