What percentage of a dental practice's value is goodwill?

Goodwill is the majority of the price. The Health Care Group's Goodwill Registry — the largest database of actual healthcare-practice transactions — puts goodwill at roughly 52% of annual gross revenue for general dentistry, and the ADA's valuation manual cites a rule of thumb of 75–85% of the sale price. Equipment and buildout are comparatively minor. Which is why the composition of that goodwill — how much transfers to a buyer versus how much is tied to the selling dentist — matters more than the headline number.

What is the difference between personal and enterprise goodwill in a dental practice?

Enterprise goodwill belongs to the business — the location, brand, systems, staff, recall engine, and referral relationships that point to the practice — and it transfers when the practice is sold. Personal goodwill belongs to the selling dentist — their name, chairside reputation, and the patients and referrers who come specifically for them — and it leaves when the dentist does. Buyers pay full value for enterprise goodwill and discount, restructure, or withhold payment for personal goodwill.

What is a key-person discount and how large is it?

A key-person discount reduces a business's value when it depends heavily on one individual. IRS Revenue Ruling 59-60 has recognized the concept since 1959, and valuation authorities such as Pratt and Damodaran cite a range of roughly 5–25%. Be clear about what that figure is: appraiser judgment, not measured data. Sophisticated buyers increasingly move owner-dependency risk into holdbacks, earnouts, and rollover equity rather than applying a single flat discount.

How do DSOs use holdbacks and earnouts when a practice depends on the owner?

Instead of a flat discount, institutional buyers move owner-dependency risk into the deal structure: a portion of the purchase price is withheld at close and paid out only if the practice maintains its revenue and EBITDA after the seller leaves. If your goodwill is personal, the offer becomes contingent on you proving — over two to three years, with your own cash at risk — that the patients and production were the practice's, not yours.

How many patients leave when a dentist sells the practice?

There is no independent study quantifying post-sale patient attrition, and the transition industry itself has conceded this in print. The commonly quoted figures — lose under 10% with a good transition, 20–30% without — are marketing, not data. What is defensible: normal annual patient attrition runs roughly 17–25% every year regardless of a sale, so apparent post-sale loss is often just ordinary churn. The real question is whether patients are loyal to the practice or to the departing dentist.

How do you reduce owner dependency before selling a dental practice?

Build the evidence years ahead: document new-patient attribution by source to prove revenue comes from transferable, enterprise channels; flatten clinical concentration so associates diagnose and produce advanced cases independently; systematize recall so retention lives in protocols rather than the owner's relationships; and extract your practice-management data — active patients, recall rates, new-patient sources, provider-level production — to demonstrate the goodwill transfers. The goal is to move the buyer's question from how much of this is just him to this runs without him.

Financial Analytics

Personal Goodwill: Why a Dental Buyer Can Withhold Your Cash

James DeLuca June 15, 2026 9 min read

Goodwill is most of what a buyer pays for your practice. They only pay full freight for the part that stays after you leave.

When a dentist sells, the equipment and the buildout are rounding errors. The real money is goodwill — the intangible value of patients, reputation, and referral flow. The only database of actual healthcare-practice transactions, the Health Care Group’s Goodwill Registry, puts goodwill at roughly 52% of annual gross revenue for general dentistry. The ADA’s own valuation manual cites a rule of thumb of 75–85% of the sale price. Either way the conclusion is the same: goodwill is the asset.

Which makes the question no one forces a seller to answer the most important one in the deal: how much of that goodwill is the practice — and how much is just you?

Personal vs. enterprise goodwill — and why it isn’t marketing

There are two kinds of goodwill, and a buyer values them very differently.

Enterprise goodwill belongs to the business: the location, the brand, the systems, the staff, the recall engine, the referral relationships that point to the practice. It transfers the day you hand over the keys.

Personal goodwill belongs to you: your name, your chairside reputation, the patients who come because they trust Dr. You, the specialist referrals that flow because the periodontist plays golf with you. It walks out the door when you do.

This isn’t a consultant’s framework — it’s a legal distinction courts have drawn for decades. In the dental-specific Howard v. United States (9th Cir. 2011), a Spokane dentist allocated $549,900 of his sale to personal goodwill — and lost. Because Dr. Howard had signed an employment agreement and non-compete with his own corporation, the court ruled the goodwill belonged to the entity, recharacterized it as ordinary income, and handed him a six-figure tax bill.

But the tax trap is only half the threat. The M&A threat is how an institutional buyer weaponizes this exact distinction to withhold your cash at the closing table.

How a buyer prices “it might just be him”

The textbook tool is the key-person discount — a reduction in practice value for a business overly dependent on one individual. IRS Revenue Ruling 59-60 has recognized since 1959 that “the loss of the manager of a so-called ‘one-man’ business may have a depressing effect upon the value.” The valuation literature (Pratt, Damodaran) puts that discount somewhere in the 5–25% range. But be honest about what that number is: appraiser judgment, not measured fact. Leading theorists actively warn against applying it as a flat haircut.

So sophisticated buyers, DSOs especially, increasingly don’t take a haircut at all. They restructure the deal. They move the risk into holdbacks, earnouts, and rollover equity — money withheld at close and paid out only if the practice holds its revenue and EBITDA after you leave. Read that carefully: if your goodwill is personal, you don’t just get a lower number, you get a number that’s contingent on you proving the goodwill transfers, with your own cash at risk for two or three years. Owner dependency turns the whole deal into a bet on whether your patients were ever really the practice’s.

The operational tell: where do your new patients come from?

You don’t need an appraisal to see which kind of goodwill you have. Look at your new-patient sources.

A national survey found 84% of patients solicit personal recommendations when choosing a dentist — and in an owner-driven practice, those recommendations are for you. That’s personal goodwill. But the same research shows insurance participation and online reputation are now co-equal drivers: most patients say a practice’s reviews heavily influence their choice, and the majority of dental journeys now begin with a Google search. Those channels (insurance directories, SEO, practice-branded reviews, referrals to the practice) are enterprise goodwill. They keep producing after you’re gone.

The forensic version of this question is clinical concentration. If 80% of your new patients route to the owner-doctor, and the owner-doctor produces 90% of the high-margin CDT codes (implants, endo, complex restorative), you don’t have a practice with a key person. You have a key person with a practice attached. A buyer sees that in your raw practice-management data immediately. It is the single clearest signal that your revenue is non-transferable.

The attrition number everyone quotes — and why I won’t

This is where traditional transition advice fails. A broker will tell you that with a proper transition you’ll lose “less than 10%” of patients, and without one you’ll lose “20–30%.” Those numbers get repeated everywhere.

They are folklore. There is no independent study behind them, and the transition industry knows it. The Director of Transition Services at Henry Schein said it in print: “There really are no scientific studies to confirm actual percentages of lost patients.” The advisors quoting you attrition percentages are, more often than not, the same people selling you the transition that supposedly prevents it.

What we can say is grounded: normal annual patient attrition runs 17–25% every year regardless of a sale — Dental Intelligence’s data across 4,000+ offices puts it near 25%. So a practice that appears to “lose 20% after a sale” may simply be experiencing the churn it always had. The real question was never a made-up percentage. It is whether your patients are loyal to the practice or to you — because only one of those survives your departure.

How you defend it

Goodwill defensibility isn’t a pitch you make at the closing table. It’s evidence you build for years before it:

Audit new-patient attribution. Stop guessing. Extract your PMS referral data to definitively prove what percentage of revenue originates from transferable, enterprise channels (insurance directories, location, online) versus personal referrals. Your marketing firm’s organic and paid attribution reports should corroborate it.
Flatten clinical concentration. If the founder executes all of the most advanced procedures, the margin leaves when the founder does. Prove associate doctors diagnose and produce equivalent cases independent of the founder’s internal triage.
Sanitize the recall engine. Prove hygiene retention is driven by automated, systematized protocols, not the founder’s chairside charisma. If your D1110 and D4910 re-appointment rates hold steady regardless of which doctor does the exam, the goodwill is institutionalized — and it lives in the system, not in your relationships.
Pull your own PMS data. Active patients, recall rate, new-patient sources, provider-level production. Your real numbers are more persuasive than any industry benchmark, and they’re how you actually show a buyer the goodwill transfers.

Do that, and you change the buyer’s question from “how much of this is just him?” to “this runs without him.” That difference is the gap between a discounted, earnout-laden offer and full freight at close.

Goodwill is most of your price. Make sure it’s the kind that stays.

See how a buyer would score your goodwill before they do it for you. The free Defense Gap field guide includes the attribution and concentration checks that separate transferable enterprise goodwill from the personal kind — or run the valuation calculator to see your normalized EBITDA and the range a buyer’s model would produce.

About the author — James DeLuca is the founder of Precision Dental Analytics and works in clinical data forensics and M&A defense: the “Red Team” for multi-location founders and sell-side brokers, mathematically hardening clinical architecture before owners face institutional due diligence. He executes Pre-LOI forensic data sanitization to eliminate the operational variances buyers use to compress multiples, and is the author of Phantom EBITDA, Spartan Leadership, The Dental Data Playbook, and Hidden Levers. Meet the team →

Sources: Health Care Group Goodwill Registry (via CBIZ analysis); ADA Practical Guide to Valuing a Practice (2013); Martin Ice Cream Co. v. Commissioner, 110 T.C. 189 (1998); Howard v. United States (9th Cir. 2011); IRS Rev. Rul. 59-60; Pratt, Valuing a Business; Damodaran, “The Difference Makers: Key Person(s) Value” (2023); Dental Economics / Henry Schein “Transitions Roundtable” (2014); Dental Intelligence; Futuredontics, “What Dental Patients Want.”

Frequently Asked

Questions

What percentage of a dental practice's value is goodwill?: Goodwill is the majority of the price. The Health Care Group's Goodwill Registry — the largest database of actual healthcare-practice transactions — puts goodwill at roughly 52% of annual gross revenue for general dentistry, and the ADA's valuation manual cites a rule of thumb of 75–85% of the sale price. Equipment and buildout are comparatively minor. Which is why the composition of that goodwill — how much transfers to a buyer versus how much is tied to the selling dentist — matters more than the headline number.
What is the difference between personal and enterprise goodwill in a dental practice?: Enterprise goodwill belongs to the business — the location, brand, systems, staff, recall engine, and referral relationships that point to the practice — and it transfers when the practice is sold. Personal goodwill belongs to the selling dentist — their name, chairside reputation, and the patients and referrers who come specifically for them — and it leaves when the dentist does. Buyers pay full value for enterprise goodwill and discount, restructure, or withhold payment for personal goodwill.
What is a key-person discount and how large is it?: A key-person discount reduces a business's value when it depends heavily on one individual. IRS Revenue Ruling 59-60 has recognized the concept since 1959, and valuation authorities such as Pratt and Damodaran cite a range of roughly 5–25%. Be clear about what that figure is: appraiser judgment, not measured data. Sophisticated buyers increasingly move owner-dependency risk into holdbacks, earnouts, and rollover equity rather than applying a single flat discount.
How do DSOs use holdbacks and earnouts when a practice depends on the owner?: Instead of a flat discount, institutional buyers move owner-dependency risk into the deal structure: a portion of the purchase price is withheld at close and paid out only if the practice maintains its revenue and EBITDA after the seller leaves. If your goodwill is personal, the offer becomes contingent on you proving — over two to three years, with your own cash at risk — that the patients and production were the practice's, not yours.
How many patients leave when a dentist sells the practice?: There is no independent study quantifying post-sale patient attrition, and the transition industry itself has conceded this in print. The commonly quoted figures — lose under 10% with a good transition, 20–30% without — are marketing, not data. What is defensible: normal annual patient attrition runs roughly 17–25% every year regardless of a sale, so apparent post-sale loss is often just ordinary churn. The real question is whether patients are loyal to the practice or to the departing dentist.
How do you reduce owner dependency before selling a dental practice?: Build the evidence years ahead: document new-patient attribution by source to prove revenue comes from transferable, enterprise channels; flatten clinical concentration so associates diagnose and produce advanced cases independently; systematize recall so retention lives in protocols rather than the owner's relationships; and extract your practice-management data — active patients, recall rates, new-patient sources, provider-level production — to demonstrate the goodwill transfers. The goal is to move the buyer's question from how much of this is just him to this runs without him.