A third-party valuation is an independent expert’s opinion of what a business, ownership interest, or asset is worth on a specific date. You need one when the IRS, an auditor, a court, or a counterparty wants assurance that the number is honest and not shaped by whoever benefits from it. The stakes are concrete: the IRS can impose a 20% penalty on tax underpayments tied to overstated or understated property values, and that penalty doubles to 40% for egregious misstatements.1Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments The independence of the valuer is what gives the conclusion its credibility. A valuation performed by someone with a financial stake in the answer carries little weight with regulators, courts, or the people on the other side of a deal.
When You Need One
Third-party valuations show up in four broad situations. The common thread is that at least one party outside the transaction — a tax authority, an auditor, a judge, a minority shareholder — needs assurance the value is defensible.
Tax Filings
The IRS requires an independent valuation whenever it needs to confirm the fair market value of property that doesn’t trade on a public exchange. The two most common triggers are stock option pricing under Section 409A and estate or gift tax filings for closely held businesses.
Section 409A governs deferred compensation, including stock options granted by private companies. When a private company issues options, the exercise price must equal or exceed the stock’s fair market value on the grant date. Set the price too low and the option holder faces immediate income inclusion on vesting, a 20% additional tax on top of ordinary income tax, and interest on the underpayment.2Office of the Law Revision Counsel. 26 USC 409A – Inclusion in Gross Income of Deferred Compensation Under Nonqualified Deferred Compensation Plans The Treasury Regulations create a safe harbor: an independent appraisal obtained within twelve months before the grant date is presumed reasonable unless the IRS shows the method or its application was grossly unreasonable.3eCFR. 26 CFR 1.409A-1 – Definitions and Covered Plans That safe harbor is why virtually every venture-backed startup commissions a “409A valuation” before each option grant.
Estate and gift transfers are the other major trigger. When someone transfers a closely held business interest to heirs or a trust, the IRS needs a defensible fair market value for the return. The foundational guidance for valuing stock in a closely held company is IRS Revenue Ruling 59-60, which lays out factors like earning capacity, dividend history, book value, and the industry’s economic outlook. A report that follows those principles is far harder to unwind years later.
Financial Reporting
Public and many private companies need third-party valuations to comply with GAAP. After an acquisition, FASB’s Accounting Standards Codification Topic 805 requires the buyer to allocate the purchase price across all acquired assets and assumed liabilities at fair value. That allocation determines how much of the deal price becomes goodwill versus identifiable assets like customer relationships, technology, or brand names.
Goodwill doesn’t then sit unchecked. Topic 350 requires at least an annual impairment test, comparing the fair value of each reporting unit to its carrying amount. If the fair value has dropped below book value, the company writes down the goodwill and reports an impairment loss.4FASB. Goodwill Impairment Testing Auditors typically expect an independent valuation professional to run that analysis.
Transactions and Board Decisions
When a board approves a sale, merger, or major asset disposition, directors owe a duty of care to shareholders. A fairness opinion is a specific type of third-party valuation that assesses whether the financial terms are fair to non-controlling shareholders. It doesn’t guarantee the best possible deal, but it documents that the directors took reasonable steps to evaluate the price. Without one, directors defending a shareholder lawsuit have a much harder time.
Litigation and Disputes
Courts and arbitration panels rely on third-party valuations to price contested interests. Shareholder oppression cases, where a minority owner seeks a fair buyout, almost always feature competing valuation experts. Divorce proceedings involving a business owned by one or both spouses are the other common setting. In both, the valuer may need to testify, so the report has to survive cross-examination.
Who Is Qualified to Perform One
There is no federal license for business valuation. Credibility comes from recognized credentials issued by professional organizations, each requiring education, exams, and continuing education. Three designations dominate the field.
- The Accredited Senior Appraiser (ASA), granted by the American Society of Appraisers, requires five years of full-time appraisal experience at 2,000 hours per year, completion of a four-course curriculum in business valuation principles, and a comprehensive exam.5American Society of Appraisers. Accredited Member and Accredited Senior Appraiser in BV
- The Accredited in Business Valuation (ABV) is available only to licensed CPAs who are AICPA members in good standing. The CPA background makes ABV holders well-suited for tax-related valuations where accounting expertise matters.6AICPA & CIMA. Gain Credibility in Valuation
- The Certified Valuation Analyst (CVA), conferred by the National Association of Certified Valuators and Analysts, is the only valuation credential accredited by both the National Commission for Certifying Agencies and the ANSI National Accreditation Board.7National Association of Certified Valuators and Analysts (NACVA). Certified Valuation Analyst (CVA)
For tax filings, the IRS separately defines a “qualified appraiser” as someone with verifiable education and experience in valuing the specific type of property, who has either completed professional-level coursework plus two years of experience or earned a recognized appraiser designation.8eCFR. 26 CFR 1.170A-17 – Qualified Appraisal and Qualified Appraiser If the report is going on a tax return, especially for estate, gift, or charitable contribution purposes, using someone who meets this definition matters. The IRS can disregard a report from an appraiser who doesn’t.
The Standards They Follow
Two frameworks govern how valuations are performed. The Uniform Standards of Professional Appraisal Practice (USPAP) set ethical and performance rules across appraisal disciplines and have become the broadly accepted ethical standard for business valuation.9Appraisal Subcommittee. USPAP Compliance and Appraisal Independence For CPAs specifically, the AICPA’s Statement on Standards for Valuation Services (VS Section 100) is binding guidance on how to perform and report valuation engagements.10AICPA & CIMA. Statement on Standards for Valuation Services (VS Section 100)
How the Value Is Determined
A qualified valuer considers three fundamental approaches. Usually one or two end up driving the final answer, depending on the nature of the business and the quality of available data. The valuer explains which approaches were used, which were rejected and why, and how competing value indications were reconciled into a single conclusion.
The Income Approach
The income approach treats a business as a stream of future cash flows and asks what that stream is worth today. It’s the workhorse for operating companies with predictable earnings. The discounted cash flow (DCF) method projects expected cash flows year by year over a forecast period, often five to ten years, then adds a terminal value for everything beyond. All those future dollars get converted to present value using a discount rate that reflects how risky the projections are. Higher risk, higher discount rate, lower present value. The capitalization of earnings method is a shortcut for mature businesses with stable cash flows: take a representative earnings figure and divide by a capitalization rate. Simple math, but the inputs — growth rates, margins, capital spending, the rate itself — are where the judgment lives.
The Market Approach
The market approach looks at what similar businesses have actually sold for or are trading at. The guideline public company method selects publicly traded companies similar in industry, size, and operations, then derives multiples like enterprise value-to-EBITDA and applies them to the subject company. The guideline transaction method does the same thing using data from actual sales of entire private companies; those multiples tend to run higher because they bake in the premium a buyer pays for control. The hard part is finding genuinely comparable companies. Poor comparables produce misleading numbers, and experienced judgment is what separates a defensible market analysis from a superficial one.
The Asset Approach
The asset approach adds up the fair market value of everything the company owns and subtracts everything it owes. It fits holding companies, real estate-heavy businesses, and companies facing liquidation. For an operating company, it typically sets a floor. The adjusted net asset method restates every balance sheet item from book value to current fair market value. Real estate gets appraised, equipment gets repriced, and intangibles that never appeared on the books — customer lists, proprietary technology, trade names — get identified and valued separately.
Standard of Value, Discounts, and Premiums
The raw number from any of these approaches is rarely the final answer. Two things reshape it: the legal standard that governs the engagement, and adjustments for the specific ownership interest being valued.
Standard of Value
The standard defines the hypothetical transaction the valuer is modeling. Two standards dominate practice.
- Fair market value is the price at which property would change hands between a willing buyer and willing seller, neither under pressure, both having reasonable knowledge of relevant facts. This is the standard for nearly all federal tax purposes. Discounts for lack of marketability and lack of control typically apply.
- Fair value is used for financial reporting under GAAP and in certain litigation contexts like shareholder buyout disputes in many states. Under GAAP, fair value is the exit price in an orderly transaction between market participants. In litigation, fair value often protects minority shareholders by excluding discounts for lack of marketability or lack of control, recognizing that a squeezed-out minority holder isn’t a “willing seller.”
The standard has to be set at the outset because it directly affects the final number. The same business valued under fair market value and fair value can produce meaningfully different results. Separately, the valuer specifies a premise of value: going concern, meaning the business is assumed to keep operating, or liquidation, meaning it’s shutting down. Going-concern value is almost always higher because it captures the earning power of the assembled enterprise.
Discounts and Premiums
Two adjustments come up in nearly every valuation of a privately held company. A discount for lack of marketability (DLOM) reflects that selling a private company interest is harder, slower, and less certain than selling publicly traded shares. Empirical studies suggest these discounts commonly range from 20% to 40%, though the specific percentage depends on the company’s size, transferability restrictions, dividend history, and the likelihood of a future liquidity event.
A discount for lack of control applies when valuing a minority interest that can’t set strategy, force distributions, or sell the business. A 30% interest is worth less per share than a 100% interest because the minority holder can’t control how the money gets spent. A control premium may go the other way, increasing value when the interest carries majority voting power. There’s no universal lookup table; each adjustment is calibrated to the specific rights attached to the interest.
Full Valuation or Calculation Engagement
Not every situation needs a full valuation. Under the AICPA’s VS Section 100, there are two kinds of engagements. In a valuation engagement, the analyst applies whatever approaches and methods they deem appropriate and delivers a conclusion of value, a fully supported opinion. In a calculation engagement, the analyst and client agree in advance on which specific approaches will be used, and the result is a “calculated value” rather than a formal conclusion.11AICPA & CIMA. VS Section 100 – Calculation Engagement and Report FAQs
A calculation engagement costs less and moves faster, but the report explicitly states that no full valuation was performed and that the calculated value might differ from a conclusion of value. Calculations work for internal planning, preliminary deal negotiations, or early-stage dispute exploration. They generally won’t satisfy IRS filing requirements, court proceedings, or any situation where the number has to withstand adversarial scrutiny.
What to Prepare and What to Expect
The biggest factor in how long a valuation takes and what it costs is client preparation. Delays in gathering documents are the most common reason engagements run over budget and past deadline. The valuer can’t start analytical work until they have what they need.
Defining Scope and Date
Pin down what’s being valued (the whole company, a 25% membership interest, a specific asset class) and the valuation date. The valuation date is the specific point in time to which the conclusion applies. The valuer uses only information and economic conditions known or reasonably knowable as of that date. If the business closed a major contract two weeks after the valuation date, that event generally doesn’t factor in.
Documents to Have Ready
Expect a substantial request covering three to five years of history.
- Financial statements: income statements, balance sheets, and cash flow statements, preferably audited or CPA-reviewed.
- Federal and state tax returns for the business.
- Organizational documents: articles of incorporation or organization, operating agreements, shareholder agreements, and any buy-sell provisions.
- A list of non-operating assets — excess real estate, investment portfolios, personal vehicles carried on the books.
- Material contracts: key customer and supplier agreements, leases, debt agreements, and any pending or threatened litigation.
- Management’s financial projections for revenue, expenses, and capital spending. The quality of these projections directly affects the reliability of any income-approach analysis.
Management Interviews
Financial statements tell only part of the story. The valuer interviews key personnel to understand competitive dynamics, customer concentration risk, the depth of the management team, and the assumptions behind the projections. Clear, consistent answers strengthen the report. Vague or inconsistent ones create weaknesses that show up on the page.
The Analytical Work
The valuer starts by normalizing historical financials, adjusting for owner compensation that runs above or below market, related-party rents and purchases, one-time events like lawsuit settlements, and personal expenses run through the business. Normalized earnings feed every income-approach model, so errors here flow through everything. The valuer then applies the selected approaches, reconciles the resulting value indications based on the reliability of each, applies any discounts or premiums, and produces the conclusion.
You’ll see a draft. That review is narrow: you check factual accuracy on things like company history, customer descriptions, and how the business model is characterized. It is not a negotiation over the number. Pressuring the valuer to change the conclusion undermines the entire purpose of the engagement and violates professional standards.
Cost and Timeline
For small businesses with less than $10 million in annual revenue, a professional valuation typically runs between $2,000 and $10,000. A less formal estimate for internal planning might come in around $1,500 to $4,000. A certified valuation suitable for IRS filings, litigation, or divorce proceedings typically costs $7,000 to $8,000. Engagements involving multi-entity structures, complex capital arrangements, or international operations can exceed $10,000 and climb from there. When the valuer needs to provide expert testimony, hourly rates for court preparation and testimony commonly run $350 to $500 per hour on top of the base fee.
A typical engagement takes seven to fourteen weeks from start to finish. Complex businesses with multiple divisions, international operations, or unusual financial structures take longer. Litigation valuations run toward the long end because the report has to anticipate cross-examination and opposing experts.
Penalties for Getting It Wrong
The IRS treats inaccurate valuations seriously, and penalties reach both the taxpayer who uses the number and, in some cases, the appraiser who produced it.
For taxpayers, a property value claimed on a return that turns out to be 150% or more of the correct value (or understated by a comparable margin) is a substantial valuation misstatement, triggering a 20% accuracy-related penalty on the resulting tax underpayment. If the claimed value hits 200% or more of the correct amount, the misstatement is “gross” and the penalty doubles to 40%.1Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments These penalties apply to estate and gift tax valuations, charitable contribution deductions, and any other filing where property value matters.
Appraisers face their own exposure. If an appraiser prepares a valuation they know or should know will be used on a tax return, and that valuation produces a substantial or gross misstatement, the appraiser pays a penalty equal to the greater of 10% of the resulting underpayment or $1,000, capped at 125% of the gross income received for preparing the appraisal.12Office of the Law Revision Counsel. 26 USC 6695A – Substantial and Gross Valuation Misstatements Attributable to Incorrect Appraisals The appraiser can avoid the penalty by showing the appraised value was more likely than not correct, but that’s a defense they have to prove.
Those provisions are the strongest practical reason to hire a credentialed, independent valuer rather than cutting corners. A defensible report from a qualified professional is the best protection against penalties and against having to relitigate the value years later.