Business valuation engagement letter under VS Section 100
By Arthur Teboul, DokuTrak · Published
In brief
A business valuation engagement letter defines the interest being valued, the valuation date, the purpose and intended users, the standard and premise of value, and whether the work is a full valuation or a calculation. For a CPA analyst, the AICPA valuation standard expects this understanding with the client, preferably in writing.
The template: Business valuation engagement letter
Pick a valuation or a calculation engagement in the third clause and match the report type. Keep the tax riders only for a gift, estate or charitable use, and have your counsel review the template once.
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Fill it in online: The engagement letter generator fills this template with your firm and client, keeps the optional clauses you pick, and gives you the letter to copy, print or save.
[Valuation firm name] [Firm address] [Date] [Client name] [Client address] Re: Valuation of [subject interest] as of [valuation date]
Dear [Client contact name],
Subject interest
We will estimate the value of [percentage or number of shares] [class] interest in [entity name], a [state] [entity type], as of [valuation date]. The interest is [controlling / non-controlling] and subject to [agreements and restrictions].
Purpose and intended users
The valuation is for [purpose, for example a gift tax return / an estate tax return / a buy-sell agreement / a marital dissolution]. Its intended users are [client name] and [other named users]. No one else may rely on it, and it may not be used for any other purpose.
Type of engagement
Option A: a valuation engagement, in which we will choose the approaches and methods we consider appropriate and express a conclusion of value. Option B: a calculation engagement, in which we will apply the following agreed approaches and procedures: [list], and express a calculated value.
Standard and premise of value
We will use the standard of [fair market value / fair value / investment value], defined as [definition], from [source]. We will assume the business is valued as a [going concern / liquidation].
Report
We will issue a [detailed report / summary report / calculation report] by [date], provided we receive the documents below by [date]. We are not obliged to update the report for information we learn after its date.
Assumptions and limiting conditions
Our work will be subject to the assumptions and limiting conditions attached as Schedule 1, which will also appear in our report. Hypothetical conditions, if any: [list].
Your responsibilities
You will give us complete and accurate information, access to [names] in management, and access to the business premises if we ask. At the end you will sign a representation letter confirming the information you gave us is complete.
Documents
By [date], please send: financial statements and federal tax returns for [years]; interim statements; budgets or projections; operating, shareholder and buy-sell agreements; the capitalization table; key contracts and leases; and prior valuations.
Specialists(optional)
[Specialist name] will appraise [real estate / equipment], engaged by [you / us]. Our report will state the extent of our responsibility for that work.
Independence and fee basis
We have disclosed to you any relationship with the parties that could affect our objectivity: [none / description]. Our fee does not depend on the value we conclude or on any outcome.
Gift tax rider(optional)
For use with a gift tax return, our report will state the date of the transfer, the date of our appraisal and its purpose, describe the property, the process used and the assumptions, conditions and restrictions that affect the value. We confirm we are not the donor, the donee, a family member of either, or employed by any of them.
Charitable gift rider(optional)
For a charitable contribution that requires a qualified appraisal, we will prepare one, sign it within the period the regulations allow, and sign the appraiser declaration on Form 8283, Section B. Our fee is not based on the appraised value.
Fees and testimony
Our fee is [amount / rate per hour], with a retainer of [amount] due on signing. Depositions, trial testimony and preparation for them are outside this letter and will be covered by a separate letter at [rate] per hour.
Confidentiality and disputes(optional)
We will keep your information confidential and use it only for this engagement, except as the law or our professional standards require. This letter is governed by the laws of [state], and any dispute will first go to non-binding mediation in [city, state].
Acceptance
Please sign and return this letter with the retainer. Either of us may end the engagement in writing, and you will pay for work done to that date.
Sincerely, [Analyst name], [credentials] [Valuation firm name] Signature: ____________________ Date: __________ Accepted by [Client name]: [Signer name], [Title] Signature: ____________________ Date: __________
What VS Section 100 expects the letter to cover
The AICPA valuation standard asks the analyst to set an understanding with the client, preferably in writing, and to document it if it is oral (AICPA Statement on Standards for Valuation Services (VS Section 100)). When the client is also an attest client, the independence rules require the understanding to be in writing (AICPA Statement on Standards for Valuation Services (VS Section 100)).
At a minimum, VS Section 100 lists six items for that understanding (AICPA Statement on Standards for Valuation Services (VS Section 100)). The table maps each one to a clause of the template, so you can check the letter against the standard line by line.
| Item the standard names | Clause in the template | What to write |
|---|---|---|
| Nature, purpose and objective | Subject interest; purpose and users | The interest, the date and why the value is needed |
| Client’s responsibilities | Your responsibilities | Complete data, access to management, a representation letter |
| Analyst’s responsibilities | Our work | Engagement type and procedures |
| Assumptions and limiting conditions | Assumptions | The list that will appear in the report |
| Type of report | Report | Detailed, summary or calculation report |
| Standard of value | Standard and premise of value | Fair market value, fair value or investment value |
Valuation engagement or calculation engagement
This choice drives the work and the report. Put it near the top. A valuation engagement is one where the analyst is free to apply the approaches and methods that fit, and the result is a conclusion of value, a single amount or a range (AICPA Statement on Standards for Valuation Services (VS Section 100)). A calculation engagement is one where the analyst and the client agree on the approaches, methods and limited procedures in advance, and the result is a calculated value (AICPA Statement on Standards for Valuation Services (VS Section 100)).
The report follows the type. A valuation engagement ends in a detailed or a summary report, and a calculation engagement ends in a calculation report (AICPA Statement on Standards for Valuation Services (VS Section 100)). A client who wants “a quick number” for a buy-sell talk may only need a calculation. A gift tax return or a court case usually needs the full work. Ask what the number is for before you pick.
Subject interest, date and standard of value
Be exact about what is valued. “The company” is not a subject interest; “a non-voting quarter of the membership interests in [LLC name], held under the operating agreement” is. Name the class of shares, any transfer restrictions, and whether the interest controls the business.
The standard of value is the definition of value the analysis must meet, such as fair market value for tax work or fair value under a state statute in a shareholder dispute. Quote the definition and its source in the letter. Add the premise, going concern or liquidation, because it changes the approaches that make sense.
Fix the valuation date to the event: the date of death for an estate, the date of the gift, or the date a shareholder left. If the analyst relies on another specialist, for example a real estate appraiser for the building the business owns, say who hires that specialist and how far the analyst takes responsibility for that work (AICPA Statement on Standards for Valuation Services (VS Section 100)).
Riders for gift, estate and charitable valuations
Tax uses add rules the letter should plan for. For a gift, a sound appraisal can stand in for part of the detail the return must disclose. The appraiser must not be the donor, the donee, a family member of either, or their employee (26 CFR 301.6501(c)-1, adequate disclosure of gifts). The appraisal must state the transfer date, the appraisal date and its purpose, and describe the method and assumptions (26 CFR 301.6501(c)-1, adequate disclosure of gifts).
For a noncash charitable gift claimed at more than $5,000, such as an interest in a closely held business, the donor generally needs a qualified appraisal and must complete Form 8283, Section B (26 CFR 1.170A-16, Substantiation of noncash charitable contributions). The appraisal’s fee cannot be based to any extent on the appraised value (26 CFR 1.170A-17, Qualified appraisal and qualified appraiser). Put both rules in an optional rider, so the letter works for a buy-sell as well as for a return.
What the owner must produce
Valuations slip when the data does. List the documents with a due date. Say the report date moves when they arrive late. At the end, ask for a signed letter that says the data was complete.
- Financial statements and federal tax returns for the last five years.
- Interim statements for the current year and the same period last year.
- Budgets or projections, with the assumptions behind them.
- Operating, shareholder and buy-sell agreements, with all amendments.
- A capitalization table and any recent sales of interests.
- Key customer and supplier contracts, and real estate and equipment leases.
- Prior valuations of the business or of any interest in it.
Questions people ask
What is a valuation engagement letter?
It is the written understanding between a valuation analyst and the client on the interest valued, the date, the purpose, the standard of value, the engagement and report type, and each side’s duties (AICPA Statement on Standards for Valuation Services (VS Section 100)).
What is the difference between a valuation and a calculation engagement?
In a valuation engagement the analyst chooses the methods and concludes on value. In a calculation engagement the analyst and client agree the methods and limited procedures, and the result is a calculated value (AICPA Statement on Standards for Valuation Services (VS Section 100)).
Can a business valuation fee depend on the value?
For a charitable gift appraisal, the fee cannot be based to any extent on the appraised value (26 CFR 1.170A-17, Qualified appraisal and qualified appraiser). A fixed or hourly fee for every valuation avoids the question, and a CPA analyst also faces the AICPA limits on contingent fees.
Does a gift tax valuation need a special letter?
It needs a rider. The appraiser must be independent of the donor and donee, and the appraisal must state the dates, purpose, method and assumptions to support adequate disclosure (26 CFR 301.6501(c)-1, adequate disclosure of gifts).
Sources
- AICPA Statement on Standards for Valuation Services (VS Section 100): The analyst establishes an understanding with the client, preferably in writing, covering six minimum items; it defines valuation and calculation engagements, their report types and the use of specialists.
- 26 CFR 301.6501(c)-1, adequate disclosure of gifts: An appraisal may satisfy part of adequate disclosure if the appraiser is independent of donor and donee and the appraisal states the dates, purpose, method and assumptions.
- 26 CFR 1.170A-17, Qualified appraisal and qualified appraiser: Defines a qualified appraisal and provides that its fee cannot be based to any extent on the appraised value.
- 26 CFR 1.170A-16, Substantiation of noncash charitable contributions: No deduction is allowed for a noncash contribution of more than $5,000 unless the donor obtains a qualified appraisal and completes Form 8283, Section B, subject to the listed exceptions.
About the author
Arthur Teboul (Founder, DokuTrak) is building DokuTrak after watching professionals lose hours chasing clients for documents over email. Arthur Teboul.
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How this page was made (methodology): it is built from the primary sources listed under Sources, and every rule and figure on it links to the source it comes from. Last updated October 25, 2026. Spotted an error or a rule that changed? Contact us.
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