If you want to know how to value a CPA firm, the first thing to set down is the rule of thumb. One times gross revenue has priced accounting practices for decades, and it is still the first number most partners hear. It is a payment convention, not a valuation, and the difference shows up the moment a buyer starts asking what happens to the fees after you stop answering the phone. The IRS ruling that valuers treat as the bedrock for closely held businesses opens by refusing to hand anyone a formula.
One Times Gross Is a Payment Convention, Not a Valuation
The rule of thumb survives because it is easy to say and easy to structure a payment around. It gives both sides a headline, and leaves the terms that decide whether the seller ever collects it to the pages underneath.
Revenue Ruling 59-60 was written for estate and gift tax, and the IRS's own valuation job aid calls it "widely accepted within the field of business valuation as the bedrock for the analysis of valuation problems involving closely held business entities" (S Corporation Valuation Job Aid for IRS Valuation Professionals, p. 8).
The ruling itself says plainly that no shortcut is available. A determination of fair market value is "a question of fact" that "will depend upon the circumstances in each case," and "no formula can be devised that will be generally applicable to the multitude of different valuation issues arising in estate and gift tax cases." An appraiser resolving wide differences of opinion is told instead to "maintain a reasonable attitude in recognition of the fact that valuation is not an exact science" (Rev. Rul. 59-60, 1959-1 C.B. 237, Section 3.01, reproduced in full as Appendix A to the IRS job aid on valuing non-controlling interests in electing S corporations).
The same ruling closes off the other shortcut, the one where you average a few methods and call the middle the answer. Section 7 says that because valuations cannot be made on a prescribed formula, averaging factors such as book value and capitalized earnings "excludes active consideration of other pertinent factors, and the end result cannot be supported by a realistic application of the significant facts in the case except by mere chance."
None of that makes a multiple useless. It makes it a sanity check on a number you built some other way, rather than the way you build the number.
How to Value a CPA Firm in the Order a Buyer Does
A buyer starts by rebuilding your profit and loss so it shows what the practice earns for its owner, not what it reports for tax. That rebuild is called normalizing, and it is where most of the argument happens.
Owner compensation comes first. The ruling expects a valuer to look at officers' salaries "in total if they appear to be reasonable or in detail if they seem to be excessive," and to be able to "separate recurrent from nonrecurring items of income and expense" (Rev. Rul. 59-60, Sec. 4, paragraph .02(d)). In a practice where the owner sets their own salary, that adjustment can move the earnings number more than anything else on the page.
Discretionary spending comes next: the vehicle, the travel that doubles as a holiday, the family member on payroll at a rate the work does not support. A buyer adds those back, then subtracts what it would really cost to replace the work those people do.
Then the one-time items get pulled out in both directions. A large non-recurring engagement inflates a year. A software migration or a partner's medical leave deflates one. Both get removed, because the buyer is pricing what repeats.
Last comes the working capital nobody enjoys discussing. Aged receivables and unbilled work in progress are the two places where a practice quietly finances its clients. If you cannot age your unbilled work in progress by client today, the record that produces that number is worth fixing before anyone else asks for it.
One constraint sits in front of the client-side part of that review. Under section 301.7216-2(n), the federal rules on tax return information treat due diligence conducted before a proposed sale as something that "will not constitute a transfer of the list" when it runs under a written agreement requiring confidentiality of the tax return information disclosed and barring any further disclosure or use beyond the purchase, and the transfer rules that govern a practice handover set out the rest of what that paragraph carries. The agreement gets signed before the data room opens, not after the first friendly meeting.
Value Follows Earning Capacity, and Earning Capacity Follows Your Bench
The ruling lists the factors that require careful analysis in every case, and two of them decide most practice valuations: "the earning capacity of the company" and "whether or not the enterprise has goodwill or other intangible value." On goodwill it is blunt. "In the final analysis, goodwill is based upon earning capacity" (Rev. Rul. 59-60, Sec. 4, paragraphs .01 and .02(f)).
That sentence is the whole argument about whether your firm is worth a premium. Goodwill is not reputation in the abstract. It is earnings that keep arriving, and a buyer only believes they will keep arriving if somebody other than you produces them.
It is also why the three standard approaches do not weigh equally for a practice. An income approach values the earnings stream, a market approach reads comparable sales, and an asset approach adds up what the business owns. The ruling speaks to the choice between the first and the last. "In general," it says, the appraiser "will accord primary consideration to earnings when valuing stocks of companies which sell products or services to the public," while "in the investment or holding type of company, the appraiser may accord the greatest weight to the assets underlying the security to be valued" (Rev. Rul. 59-60, Sec. 5).
A CPA firm sells services, so an earnings measure carries the valuation, and the label on that measure changes the number. Seller's discretionary earnings adds the owner's whole compensation back into earnings, while earnings before interest, taxes, depreciation and amortization leaves the cost of the owner's role sitting in the expense line. The same practice produces two different figures, so a multiple means nothing until you know which measure it was quoted against. An asset-based number tells you very little about a business whose main asset is a client base.
The ruling also names the failure mode. Writing about a so-called one-man business, it says the loss of the manager "may have a depressing effect upon the value of the stock of such business, particularly if there is a lack of trained personnel capable of succeeding to the management of the enterprise." It then names the offsets: the loss "may be adequately covered by life insurance, or competent management might be employed on the basis of the consideration paid for the former manager's services."
Read that as a pricing instruction. A practice where the partner prepares the complex returns, holds every client relationship, and is the only reviewer is being valued on a manager who is leaving. A practice where trained staff already carry the work, and the partner reviews rather than produces, is being valued on something that stays.
So the questions a buyer is really asking are narrow. Who reviews and releases the work when you are away for two weeks in March? Which clients have met somebody other than you? How much of last year's fee income came from work nobody else in the building could have prepared?
What Turns the Earnings Number Into a Price
Once the earnings number is built, turning it into a value means capitalizing it at some rate, and the rate is where the argument moves. The ruling is direct about how hard that is. A determination of the proper capitalization rate "presents one of the most difficult problems in valuation," and "no standard tables of capitalization rates applicable to closely held corporations can be formulated." The more important factors in deciding on a rate are "(1) the nature of the business; (2) the risk involved; and (3) the stability or irregularity of earnings" (Rev. Rul. 59-60, Sec. 6).
The nature of the business is fixed on the day you sell. The other two are the bench question in different clothes. Risk is a question about who else can do the work, and stability is a question about whether the fee base survives a season when you are not the one producing it.
The Terms Decide What You Collect
Two offers with the same headline can pay out differently, and the gap lives in three terms.
The first is how much is paid at closing versus over time. Cash at closing is certain and usually smaller. A larger number paid across several years is a promise that depends on the practice performing after you have handed over the keys.
The second is the retention adjustment, sometimes called a clawback: a clause that recalculates the price based on which clients are still there after a stated period. It moves the risk of client attrition from the buyer back to you, and the fee base it measures is negotiable. Whether a client who merges, retires, or simply agrees to a lower fee counts as attrition should be written down rather than assumed.
The third is what you are expected to do after closing. A transition period where you introduce clients, a consulting arrangement, a covenant not to compete: each is a real obligation with a real price, and each one is part of the consideration whether or not it appears on the headline.
Compare two offers only after you have restated both as cash at closing, cash at risk, and work still owed. Until then you are comparing labels.
The Price Allocation Is Part of the Price
Most sellers reach this part late, and it deserves more attention than another decimal place on the multiple. A practice sale is not the sale of one thing. "The sale of a trade or business for a lump sum is considered a sale of each individual asset rather than of a single asset," and both the buyer and the seller must use the residual method to spread the consideration across those assets (IRS Publication 544, Sale of a Business).
The residual method runs in class order, and the last two classes are the ones a professional practice cares about. Class VI assets are section 197 intangibles other than goodwill and going concern value, and Class VII assets are goodwill and going concern value (IRS Publication 544, Classes of assets). Going concern value is defined in the income tax regulations as "the additional value that attaches to property by reason of its existence as an integral part of an ongoing business activity" (section 1.197-2(b)(2)), so in a firm with almost no equipment on the books, the residual is usually where most of the price lands.
For the buyer, those intangibles run on one clock. A taxpayer amortizes an amortizable section 197 intangible ratably over the 15-year period beginning with the month the intangible was acquired, and the definition covers goodwill, going concern value, workforce in place, customer-based intangibles, and any covenant not to compete entered into in connection with the acquisition of a business (26 U.S. Code section 197).
Read that as a negotiating fact. A dollar the buyer puts on your covenant not to compete amortizes on the same schedule as a dollar put on goodwill, so amortization speed is not the reason a buyer pushes for one label over the other. What each label does to your own tax result is a separate question, and it is the one worth taking to your adviser.
Both sides report the allocation, and each generally attaches their own Form 8594 to their own return (IRS Publication 544, Reporting requirement). That form, Asset Acquisition Statement Under Section 1060, asks each party to report aggregate fair market value and allocated sales price by class, with Class VI and Class VII on a single line, and question 6 asks whether the purchaser also bought a license or a covenant not to compete, or entered into a lease agreement, employment contract, management contract or similar arrangement with the seller or with the seller's managers, directors, owners or employees, along with a statement giving the type of agreement and the maximum consideration payable under it (Form 8594, Rev. November 2021).
Write the allocation into the agreement rather than leaving it to two separate filings. A written allocation agreed by buyer and seller "is binding on both parties unless the IRS determines the amounts are not appropriate" (IRS Publication 544, Agreement). Because the allocation changes the after-tax result for both sides, take it to your own tax adviser before you sign, not after.
The Part of the Number You Can Still Change
Two things suppress a practice valuation that are entirely inside your control, and neither of them is the multiple.
The first is the work you turned away. Revenue you never billed is not in any figure a buyer multiplies, and a growth rate suppressed by capacity looks identical, on paper, to a growth rate suppressed by demand. If you have been rationing new engagements to protect the season, the capacity you plan for is also the growth story you are selling.
The second is who produces the work. That is the point the ruling makes about a business whose value depends on one manager, and the fix is trained people who can carry a file to review standard without you. Building that bench also moves the metrics a buyer reads, because realization and utilization shift as partner hours come out of preparation, and the numbers a firm reports on itself are where that shows up. Redirecting partner time toward advisory work changes the same mix.
Be honest about the timing. If you are signing a letter of intent this quarter, none of this is your lever, and the useful work is on the terms and the allocation instead. Staffing and delegation move a valuation over two seasons or three, not two months.
We build offshore accounting and tax teams inside US firms, and we lead with a Free 40-Hour Proof Pilot for the same reason a buyer discounts an owner-dependent practice. Capacity nobody has seen should not be taken on trust. Put a fixed block of your own representative work through the team, on your software and your procedures, and let your reviewer grade the output before a single client file is at stake. Don't trust us. Test us.
Where to Start
Build the earnings number first, then argue about the multiple. Normalize the profit and loss, age the unbilled work in progress, and write down honestly how much of the fee base depends on you personally being available. That last figure is what a buyer discounts when it prices an owner-dependent practice, and unlike the terms and the allocation it moves over seasons rather than weeks.
Then treat the terms and the allocation as part of the price rather than paperwork that follows it. A retention clause and a Class VII allocation move what you keep further than the tenth of a turn you win arguing about a multiple, and the multiple was never the valuation in the first place.