The Net Number: Why Your Multiple Isn't the Money You Keep
Two dentists sell in the same year. Same specialty, same city, nearly the same practice — and the same $5 million on the front page of the deal. One of them walks away with roughly $700,000 more than the other.
Nothing about the two practices explains the gap. It was decided in a one-page schedule at the back of the purchase agreement — the part one of them negotiated for months, and the other one signed on the way to the closing table.
The multiple gets all the attention. The structure keeps the money.
Before I go further: I’m a forensic analyst, not a tax attorney, and this isn’t tax advice. These are the mechanics of how a sale gets taxed — the map, not your route. Your CPA and tax counsel run your actual numbers. The point of this piece is only that most sellers never realize this half of the deal was negotiable at all.
The number you celebrate isn’t the number you keep
Every seller I’ve watched go to market can quote me their multiple to the decimal. Almost none of them can quote me their after-tax number.
That’s backwards. The multiple sets the headline. The tax structure sets your take-home. And unlike the multiple — which the market largely dictates — the structure is negotiated directly between you and the buyer, inside documents most sellers never read closely: the allocation schedule, the entity terms, the non-compete, the consulting agreement.
The buyer reads every one of them. Their advisors have run the after-tax math on their side of the table down to the basis point. If you haven’t run yours, you’re not negotiating that half of the deal. You’re accepting it.
Fork one: are you selling the assets, or the business?
Almost every dental deal is an asset sale: the buyer takes your equipment, your goodwill, your patient records, your brand — but not your corporate shell. They prefer it for two reasons: they get a fresh, stepped-up basis they can depreciate, and they leave your old liabilities behind.
What’s efficient for the buyer isn’t automatically efficient for you. A stock (or equity) sale, where they buy the entity itself, can hand the seller cleaner capital-gains treatment and, if you’re organized as a C-corp, can sidestep a second layer of tax. Whose preference wins is not a law of physics. It’s a negotiation, and it’s usually settled early and quietly, before anyone at the table is paying attention to it.
Fork two: the allocation
Here’s the part that costs sellers the most and gets the least airtime.
Purchase price allocation is the split of the sale price across asset classes — and in an asset sale, the price doesn’t land in one bucket. It gets allocated across categories on IRS Form 8594, and each category is taxed to you differently:
| Purchase-price bucket | How the seller is taxed |
|---|---|
| Goodwill | Long-term capital gains (roughly 20% + 3.8% surtax) |
| Equipment & furnishings (already depreciated) | Ordinary income — depreciation recapture |
| Non-compete covenant | Ordinary income |
| Consulting / transition agreement | Ordinary income (plus payroll tax) |
Illustrative treatment; allocation is reported on IRS Form 8594. Tax law changes and every situation differs — this is not tax advice. Confirm your specifics with your CPA.
The gap between capital-gains and ordinary rates can run 13 to 17 percentage points. On a multi-million-dollar sale, every dollar that moves from the goodwill bucket into the equipment or non-compete bucket is a dollar taxed at the high rate instead of the low one.
Now the tension. The buyer wants dollars out of goodwill. Goodwill takes them fifteen years to write off. Equipment they depreciate fast; a non-compete they amortize; a consulting agreement they deduct as they pay it. Their ideal allocation is close to your worst one. And you both have to file the same Form 8594, so the split is negotiated — whether you engage in that negotiation or not.
A seller who doesn’t understand the allocation signs the buyer’s version. It looks reasonable. It photographs fine. And it quietly moves a few hundred thousand dollars from your capital-gains column into your ordinary-income column.
The entity time bomb
If your practice is a C-corporation and you sell its assets, you can be taxed twice — once at the corporate level on the gain, and again when the money comes out to you personally. That single structural fact can vaporize a fortune, and it can’t be repaired at the closing table. It’s fixed years earlier, in how the entity is organized and elected.
There’s a lever buried here too: personal goodwill. Personal goodwill is the share of a practice’s value tied to the dentist’s own reputation and relationships, not the corporation’s. Properly established, it can be sold by you as an individual and taxed once, at capital-gains rates — even out of a C-corp. Courts have upheld it. But it has to be built and documented long before the LOI, not asserted in diligence.
Rollover equity: the tax you can postpone
When a DSO deal includes rollover equity — you take part of your proceeds as a stake in the new platform instead of cash — that rolled portion can often be structured to defer the tax until you sell the stake later. You’re not dodging it; you’re timing it, and keeping more capital compounding in the meantime. Structured wrong, the same rollover can trigger tax today on money you haven’t actually put in your pocket. Same clause, opposite outcome, decided entirely by how it’s drafted.
This is the same fight as your QoE — one line lower
If you’ve read anything I’ve written, you know the buyer’s Quality of Earnings team goes to work on your pre-tax number — re-pricing add-backs, hunting phantom EBITDA, compressing the multiple.
The tax structure does the identical thing one line further down. It compresses your after-tax number. Both are negotiated. Both are where an unprepared seller quietly loses money they never knew was on the table. The difference is that the QoE erosion at least shows up in the price you can see. The tax erosion hides in schedules you didn’t think to fight over — so most sellers never even learn what it cost them.
The move
You cannot fix this in the deal room. By the time you hold an LOI, your entity is what it is, your holding periods are what they are, your personal goodwill is either documented or it isn’t. The after-tax number is engineered years before the sale — in the same window where you’d be hardening your EBITDA for that QoE audit.
So do two things, early. Get your entity structure reviewed by a tax advisor who has actually closed practice sales, not just filed your returns. And when the LOI arrives, negotiate the allocation and the structure with the same intensity you bring to the multiple. That schedule at the back of the agreement isn’t paperwork. It’s the second half of your price.
Negotiate the net. The headline was never the money. What clears after the structure takes its cut — that’s the number you actually sold for.
The size-and-scale forces that set your multiple in the first place are the subject of The Boutique Fallacy; this is what happens to the number after that multiple is struck.
Model your exit number before you sign an LOI — then negotiate the structure that decides how much of it you keep.
This is educational, not tax advice. Every situation turns on specifics only your CPA and tax counsel can assess. Talk to them before you act.
About the author — James DeLuca is founder and principal architect of Precision Dental Analytics, the sell-side forensic firm that hardens clinical and financial data before founders face institutional due diligence. He is the author of Phantom EBITDA.
Frequently Asked
Questions
- How is the sale of a dental practice taxed?
- It depends on how the deal is structured. Most dental sales are asset sales, where the purchase price is allocated across asset classes on IRS Form 8594 and each class is taxed differently: goodwill is taxed at long-term capital-gains rates, while equipment (depreciation recapture), non-compete covenants, and consulting agreements are taxed as ordinary income. A stock sale, by contrast, is generally taxed as a single capital gain on the equity. This is general information, not tax advice — confirm your specifics with your CPA.
- What is the difference between an asset sale and a stock sale for a dental practice?
- In an asset sale, the buyer purchases the practice's assets — equipment, goodwill, records, brand — but not the corporate entity, gaining a stepped-up basis to depreciate and leaving old liabilities behind. In a stock or equity sale, the buyer purchases the entity itself, which can give the seller cleaner capital-gains treatment and, for a C-corporation, avoid a second layer of tax. Buyers usually prefer asset sales; sellers often fare better on stock sales. Which structure is used is negotiated.
- What is purchase price allocation in a dental practice sale?
- Purchase price allocation is the division of the total sale price across asset categories — goodwill, equipment, supplies, a non-compete covenant, a consulting agreement — reported on IRS Form 8594. Each category is taxed to the seller differently, so the allocation directly changes the seller's after-tax proceeds. The buyer and seller must file consistent allocations, which makes it a negotiated term, not a formality.
- What is personal goodwill when selling a dental practice?
- Personal goodwill is the portion of a practice's value tied to the individual dentist's reputation, relationships, and skill rather than the corporate entity. When properly established and documented, personal goodwill can be sold by the dentist as an individual and taxed once at capital-gains rates — even when the practice is a C-corporation, which helps avoid double taxation. It must be documented well before a letter of intent, not asserted during diligence.
- Does rollover equity in a DSO deal defer taxes?
- Often, yes. When a DSO deal includes rollover equity — the seller takes part of the proceeds as a stake in the new platform instead of cash — that rolled portion can frequently be structured to defer tax until the stake is later sold. Structured incorrectly, the same rollover can trigger tax immediately on money the seller has not yet received. The outcome depends entirely on how the transaction is drafted.
- How can a dentist reduce taxes when selling a practice?
- The levers are structural and they are set years before closing: choosing and electing the right entity, documenting personal goodwill, meeting long-term holding periods, and negotiating the purchase-price allocation and deal structure rather than accepting the buyer's version. By the time a letter of intent is signed, most of these are already fixed. None of this is tax advice — a CPA and tax counsel experienced in practice sales should model your specific situation.
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