Business Valuation for Estate Tax Compliance (IRS Form 706)

On this page, we address how business valuations contribute to settling estates and support IRS Form 706 reporting, including when a filing is required and how valuations affect both tax compliance and beneficiary outcomes.

The Definitive Benchmark for Estate Settlement

When a business owner passes away, the valuation of closely held business interests often becomes one of the most consequential components of estate administration and estate tax reporting. For federal estate tax purposes, business interests must be reported at fair market value as of the decedent’s date of death (or the alternate valuation date, if elected) and are subject to scrutiny by the Internal Revenue Service.

Valuations prepared for estate tax purposes differ from those performed for planning or transactional purposes. They must comply with IRC §2031, applicable Treasury Regulations, and the reporting requirements of IRS Form 706 (United States Estate (and Generation-Skipping Transfer) Tax Return). Errors in valuation can materially affect the tax due, expose the estate to penalties and interest, and create long-term administrative and potential litigation risk.

When IRS Form 706 Is Required

Form 706 is generally required when the value of the gross estate exceeds the federal estate tax exemption (currently approximately $15 million per individual, indexed for inflation). The gross estate includes all assets owned or controlled at death, including business interests, real estate, and certain life insurance proceeds.

Even when the estate is below the exemption and no estate tax is expected to be due, Form 706 may still be filed to make a portability election, allowing a surviving spouse to use the deceased spouse’s unused exemption (DSUE).

In both cases—whether the filing is required due to size or elected for portability—the values reported must be supported and defensible.

When a Valuation Is Needed—and When It May Not Be

If Form 706 is filed, a valuation of business interests is generally expected to support the reported fair market value, particularly where the interest is material or involves a closely held company. If this is the case, the right Engagement is Valuation with a Conclusion of Value and a Detailed Report.

If no Form 706 is filed and the estate is well below the exemption, a formal valuation may not always be required—especially for small or clearly immaterial interests.

However, even in smaller estates, a valuation is often advisable. The reported value at death establishes the income tax basis (“step-up in basis”) for beneficiaries, affects the allocation of assets among heirs, and may be reviewed in future tax matters or disputes. For that reason, many estates obtain a defensible valuation even when no estate tax is expected to be due.

Navigating IRS Form 706 Requirements

The IRS defines fair market value under Revenue Ruling 59-60, which provides the foundational guidance for valuing closely held business interests. For estate tax purposes, this standard governs the valuation analysis.

If Form 706 is filed, the IRS expects sufficient supporting documentation for reported values, which in practice is typically provided through a professional valuation prepared by a qualified appraiser.

Date of Death vs. Alternate Valuation Date

Under IRC §2032, an executor may elect to value estate assets as of six months after the date of death, provided that the election reduces both the value of the gross estate and the total estate and generation-skipping transfer taxes.

The Valuation Challenge:
This often requires a comparative analysis of values at both dates to determine the most appropriate and tax-efficient outcome, while ensuring that conclusions remain grounded in the market conditions prevailing at each valuation date.

The Step-Up in Basis

While the primary purpose of a Form 706 valuation is to support estate tax reporting, it also establishes the income tax basis for beneficiaries. A well-supported valuation ensures that, upon a future sale of the business interest, capital gains are calculated from a defensible and properly documented starting point.

Common Estate Tax Valuation Issues

Estate tax valuations often require analysis of factors not present in other valuation contexts, including:

Ownership structure and voting rights at the date of death
Transfer restrictions triggered by death or governing agreements
Key-person dependency
Owned real estate and other non-operating assets
Coordination with marital trusts, QTIP elections (Qualified Terminable Interest Property), and other post-death planning considerations
Minority interest characteristics and Discount for Lack of Control (DLOC)
Marketability constraints and Discount for Lack of Marketability (DLOM)

Because valuation conclusions interact directly with estate administration decisions and tax elections, coordination with estate counsel and tax advisors is often essential.

Note: This page focuses on valuation standards for Form 706 reporting rather than estate planning strategies or tax minimization techniques, which should be addressed with attorneys and tax advisors.

A Partner to Executors and Counsel

We work as a technical extension of the estate’s legal and tax team. My reports are designed to be review-ready, providing the level of detail and supporting data expected in an IRS examination.

For executors, valuation risk is not theoretical. If the IRS determines that the reported value constitutes a substantial understatement, accuracy-related penalties—typically in the range of 20% to 40% of the tax underpayment—may apply. A well-supported valuation prepared by a credentialed professional is an important component in reducing that risk.

Protecting your IRS Form 706 from IRS or legal challenges requires the rigor of a certified valuation conducted in accordance with best-in-class standards that set Gato Consulting apart.