IRS Estate Appraisal Requirements, Deadlines, and Penalties

The IRS estate appraisal requirements call for a written appraisal, prepared by a qualified and independent appraiser under recognized professional standards, for any estate asset that lacks an obvious market price. That includes real estate, closely held business interests, complex financial instruments, and personal effects of artistic or intrinsic value totaling more than $3,000.¹ The rules matter whether or not the estate ends up owing tax, because the same appraisals set the beneficiaries’ cost basis and support any portability election.

Which Assets Need a Formal Appraisal

Bank accounts, certificates of deposit, and publicly traded stock can be valued from statements and closing prices. Everything else that goes on Form 706 generally needs a professional appraisal: real property, private business interests, partnership interests, promissory notes, unique collectibles, and personal property without an active secondary market.

Federal regulations draw a specific line for personal effects. If the estate holds items of artistic or intrinsic value totaling more than $3,000, the executor must attach an expert appraisal, made under oath, to the return. That threshold sweeps in most estates with jewelry, art, coin collections, or antique furniture. The appraisal has to be accompanied by the executor’s written statement, made under penalty of perjury, confirming that the item list is complete and that the appraiser is disinterested.¹

The filing threshold that triggers a Form 706 in the first place is $15 million in gross estate (combined with adjusted taxable gifts and specific gift tax exemption) for decedents dying in 2026.² Estates below that number can still need appraisals for other reasons, covered further down.

What Makes an Appraiser Qualified

The IRS does not accept a valuation from just anyone. A qualified appraiser must hold a recognized professional designation demonstrating competency in valuing the specific type of property, or have a combination of relevant education and at least two years of experience buying, selling, or valuing that type of property.³ A real estate appraiser is not automatically qualified to value a coin collection, and a business valuator is not qualified to appraise fine art.

The appraiser must follow the Uniform Standards of Professional Appraisal Practice (USPAP) or equivalent professional standards.⁴ USPAP governs documentation, methodology, and ethical rules against conflicts of interest.

Independence is non-negotiable. The appraiser cannot be the executor, a beneficiary, the decedent’s former employee, or anyone related to those parties. The appraiser also cannot be someone the decedent or executor regularly used for appraisal work, because that familiarity creates a bias risk even without a direct financial interest.⁵

Fees tied to the appraised value are prohibited. An appraiser who charges a percentage of the final number has an obvious incentive to move it, and that structure destroys credibility with the IRS. Flat fees and hourly rates are the accepted arrangements. The report itself must include the appraiser’s signed declaration of qualifications and independence for the specific property valued.

What the Report Must Contain

A report that reaches the right number but skips required elements is useless for tax purposes. Every qualified appraisal attached to Form 706 should include:

A detailed, unambiguous description of the property. For real estate, that means the legal description, physical characteristics, and condition. For business interests, the entity type, ownership percentage, and relevant financial data.
The valuation date, which is either the date of death or the elected alternate valuation date.
A statement that the appraisal was prepared for federal estate tax purposes.
A full explanation of the valuation methodology used, whether comparable sales, income capitalization, replacement cost, or some combination, with a justification for why that method fits the asset.
The supporting data relied on: market evidence, financial statements, and comparable transactions.
The appraiser’s education, experience, and professional credentials for valuing that specific type of property.
A signed, dated declaration affirming preparation under applicable standards and compliance with independence requirements.

For personal effects above the $3,000 threshold, remember that the appraisal must be made under oath.¹

Timing and the Alternate Valuation Date

Form 706 is due nine months after the date of death.⁶ An automatic six-month extension is available by filing Form 4768 before that deadline, which pushes filing out to fifteen months after death.⁷ The extension covers filing only; it does not extend the time to pay any tax owed.

The appraiser values the assets as of the date of death, so the report needs to reconstruct market conditions at that point. The longer the gap between the death and the appraisal, the harder it becomes to gather comparable sales data, and the easier it is for the IRS to question the report’s reliability. Start early.

The executor can elect to value the estate six months after death instead, but only if doing so reduces both the gross estate value and the total estate tax liability. The election is irrevocable, must be made on the return, and is unavailable if the return is filed more than one year after its due date including extensions. Any asset sold, distributed, or otherwise disposed of before the six-month date is valued as of the date of disposition instead.⁸ Choosing the alternate date means the appraiser has to analyze market conditions at that later point, and the stepped-up basis moves with the elected value.⁹

Penalties for Getting the Value Wrong

Reported values that fall below the correct value carry accuracy-related penalties on a sliding scale:

A 20% penalty applies when the reported value is 65% or less of the correct value, treated as a substantial estate or gift tax valuation understatement.¹⁰
A 40% penalty applies when the reported value is 40% or less of the correct value, treated as a gross valuation misstatement.¹⁰

Neither penalty applies unless the resulting tax underpayment exceeds $5,000.¹⁰ For any estate large enough to owe federal tax, even a moderate valuation error clears that floor quickly, and the penalty stacks on top of the additional tax plus interest.

The exposure runs in both directions. Overvaluing an inherited asset to inflate stepped-up basis triggers a parallel income tax penalty: 20% when the claimed basis exceeds 150% of the correct amount, and 40% when it exceeds 200%.¹⁰

Closely Held Business Interests

Private business interests are where estate appraisals get hardest and where the IRS looks hardest. There is no daily closing price, so the appraiser has to work through several years of company financials, dividend-paying capacity, industry conditions, and the economic outlook for the business.

Appraisers routinely apply discounts to reflect the real limitations of the inherited interest. A minority stake without voting control is worth less than a controlling interest, and an interest in a private company that cannot be sold on an exchange is worth less than the same percentage of a public one. Discounts for lack of marketability and minority interest can reduce reported value by 20% to 40%, which is precisely why the IRS scrutinizes them. Every discount claimed has to be supported by market evidence and relevant case law.

Business valuations cost more than real estate appraisals. Fees for a small or mid-sized closely held business typically run from a few thousand dollars to $10,000 or more, depending on the complexity of the entity and the state of its records.

Art and High-Value Collectibles

Any single item of art appraised at $50,000 or more must be referred to the IRS Art Advisory Panel during an examination. The panel of outside art-world experts evaluates the submitted appraisal and recommends whether the IRS should accept or adjust the reported value.¹¹

For that reason, the appraisal for art must include professional-quality color photographs. The IRS expects clear 8-by-10-inch color photographs that let experts evaluate the work remotely.¹¹ The appraiser should also document provenance, exhibition history, condition, and comparable auction results. For art at or above the $50,000 threshold, the executor can request a pre-filing Statement of Value from the IRS by submitting the appraisal and a user fee of $2,500 for up to three items, plus $250 for each additional item.⁵

Farms and Business Real Estate: Section 2032A

Under Section 2032A, an executor can elect to value qualifying farm or business real property based on its current use rather than its highest-and-best-use value. A family farm surrounded by suburban development might be worth several million as future housing but far less as a working farm; the election lets the estate use the lower figure.¹² The maximum reduction is capped and indexed for inflation; for decedents dying in 2026, the cap is approximately $1,460,000.

Qualification requires that the property was used for farming or another qualifying business by the decedent or a family member for at least five of the eight years before death, with material participation during those periods, and that the property and related personal property meet specific percentage tests against the gross estate. Every person with an interest in the property must sign a written agreement consenting to a recapture tax if the qualifying use ends within ten years.¹² If a qualifying heir sells to a non-family member or converts the property to a non-qualifying use inside that window, the tax savings reverse and the heir personally owes the recaptured amount plus interest. The appraiser has to establish both the special use value and the fair market value, because the IRS compares the two to verify the reduction stays within the cap.

Why Appraisals Still Matter Below the Filing Threshold

An estate that falls under the $15 million filing threshold can still need formal appraisals for two reasons.

The first is stepped-up basis. Property acquired from a decedent generally takes a basis equal to fair market value on the date of death.⁹ Without a professional appraisal documenting that value, the beneficiary has no defensible basis when the asset is later sold. For a long-held family home or private company stock, the difference between a documented basis and an unsupported one can easily amount to tens of thousands in additional capital gains tax.

The second is portability. A surviving spouse can use the deceased spouse’s unused exclusion, but only if the executor files Form 706 and makes the portability election.¹³ For estates not otherwise required to file, the executor has up to five years from the date of death to file a portability-only Form 706 under Revenue Procedure 2022-32.¹⁴ The simplified procedure allows good-faith value estimates for assets qualifying for the marital or charitable deduction, but the executor still has to determine gross estate values with enough accuracy to establish the DSUE amount.

A Note on State Estate Taxes

Federal appraisal rules are not the only rules in play. Roughly a dozen states and the District of Columbia impose their own estate taxes, and several others levy inheritance taxes, with exemptions that can start well below the federal threshold. An estate below $15 million federally can still owe state tax and still need formal appraisals to support the state return. Verify the applicable state thresholds early, especially when the estate holds real property or business interests in more than one state.

1
eCFR. 26 CFR 20.2031-6 – Valuation of Household and Personal Effects
2
Internal Revenue Service. What’s New — Estate and Gift Tax
3
Internal Revenue Service. Instructions for Form 8283
4
Internal Revenue Service. Notice 2006-96 – Guidance Regarding Appraisal Requirements for Noncash Charitable Contributions
5
Internal Revenue Service. Revenue Procedure 96-15
6
Office of the Law Revision Counsel. 26 USC 6075 – Time for Filing Estate and Gift Tax Returns
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eCFR. 26 CFR 20.6081-1 – Extension of Time for Filing the Return
8
Office of the Law Revision Counsel. 26 USC 2032 – Alternate Valuation
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Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent
10
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
11
Internal Revenue Service. 4.25.12 Valuation Assistance
12
Office of the Law Revision Counsel. 26 USC 2032A – Valuation of Certain Farm, Etc., Real Property
13
Internal Revenue Service. Form 706 – United States Estate and Generation-Skipping Transfer Tax Return
14
Internal Revenue Service. Revenue Procedure 2022-32