Key Takeaways
- Valuation mistakes such as relying on rules of thumb or confusing production with profit can cause a practice to be priced below its real market value.
- Buyers routinely re-trade offers after quality-of-earnings reviews, making normalized EBITDA and documented add-backs essential before going to market.
- Goodwill, equipment condition, staff retention, payer mix, and lease obligations all affect transferability and must be addressed prior to sale.
- Enterprise value is different from seller proceeds; taxes, debt, fees, and deal structure determine what the owner actually nets.
- McLerran & Associates provides CPA-led, diligence-grade valuations that help sellers avoid these costly mistakes and improve potential outcomes.
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The Dental Practice Valuation Mistakes That Cost Sellers Money
Seven common errors account for much of the value sellers lose before a deal ever reaches the negotiating table. Each mistake below appears in the list, then in its own section with a practical correction.
- Relying on a percentage of collections or other rules of thumb
- Confusing production, collections, and true profit
- Inflated or unnormalized EBITDA and mishandled owner compensation
- Overvaluing goodwill and counting inactive patients
- Ignoring equipment, facility, technology, and capital expenditure
- Ignoring staff retention, payer mix, and lease obligations
- Confusing enterprise value with seller proceeds
The Spreadsheet Versus Reality
A practice owner usually sells once in a career, while buyers negotiate acquisitions every week. That imbalance means the valuation often determines the outcome before negotiations start. A “free” back-of-the-napkin number becomes the anchor for what the owner walks away with, and a weak valuation analysis often gets re-traded when a buyer’s quality-of-earnings team reviews the details.
The ADA advises that buying or selling a dental practice should start with an accurate valuation, which serves as the foundation for effective negotiations. That early step is where these errors usually enter, and a seller who has not run the diligence list on their own practice often discovers that the buyer already has.
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Mistake 1: Relying on a Percentage of Collections or Other Rules of Thumb
Two practices each collecting $1 million per year can be worth very different amounts. Overhead, payer mix, and how much production depends on the owner’s chair all change earnings without changing revenue. A percentage-of-collections shortcut prices both practices the same and cannot distinguish them.
The dollar consequence is that a rule-of-thumb number becomes the buyer-set anchor. Once that number enters the discussion, it can be difficult to move even when the practice’s real profitability supports a higher figure.
Because a single collections percentage cannot separate two practices with the same revenue, the practical fix is to triangulate the income, market, and asset approaches, the three methods the ADA’s guidance contemplates. Any collections percentage then serves as a quick reasonableness check, not as the valuation itself. For a deeper look at how each method works, see McLerran & Associates’ guide to Dental Practice Valuation Methods: Know Your Worth.
Mistake 2: Confusing Production, Collections, and True Profit
Production, collections, and profit measure different things. Production is the dollar value of dentistry performed. Collections is the cash actually received after write-offs, adjustments, and insurance discounts. Profit, or EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization), is what remains after all real operating costs are paid.
Pricing off production or gross collections inflates the base to which the valuation multiple is applied. Production reflects dentistry performed, while collections reflect money actually received; using production as the revenue figure can inflate the valuation base.
The practical approach is to build the valuation from reconciled collections, verified against actual bank deposits, and from normalized earnings. Gaps between reported collections and bank deposits signal to a buyer that the numbers may not be reliable, which can lower the offer or delay closing while the figures are re-verified.
Mistake 3: Inflated or Unnormalized EBITDA and Mishandled Owner Compensation
EBITDA normalization adjusts a practice’s reported earnings to reflect what a new owner could reasonably expect to earn. This process adds back the selling owner’s compensation and personal expenses, then subtracts a market-rate salary for the clinical work the owner performs, because a buyer will need to pay someone to do that dentistry.
SDE (Seller’s Discretionary Earnings) and EBITDA are related but distinct. SDE adds back the owner’s full compensation and is used when the buyer plans to work in the practice. EBITDA deducts a market-rate replacement salary and is used by DSOs and group buyers who will staff the chair with an employed dentist. A seller who applies an EBITDA multiple to an SDE figure may expect a price the market does not support.
Some add-backs do not survive buyer diligence: a family member on payroll who performs necessary work, marketing the seller plans to cut, or a “one-time” expense that appears in three consecutive years. Each one the buyer strikes lowers normalized EBITDA, and because every dollar of EBITDA is multiplied by the deal multiple, the strike comes off the price at that multiple.
The most effective defense is to unpack every add-back before going to market and control the narrative around EBITDA. A seller who has already run the diligence list on their own practice, and documented the results, reduces the buyer’s ability to use those findings as leverage. Consult your own CPA and advisors on the specifics of your normalization.
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Mistake 4: Overvaluing Goodwill and Counting Inactive Patients
Goodwill in a dental practice often splits into two categories. Enterprise goodwill, tied to the practice’s location, systems, brand, recall engine, and patient base, can transfer to a buyer. Personal goodwill, tied to the selling dentist’s chairside relationships, community reputation, and personal referral network, tends to leave when the owner does.
Goodwill accounts for a significant portion of a dental practice’s purchase price, making intangible value a primary asset in many acquisitions. When the seller is the dominant source of new patients, a large share of that goodwill may be personal rather than enterprise goodwill, and buyers who pay full enterprise-goodwill prices for it may overpay for value that does not survive the seller’s departure.
Active patient counts matter as well. A patient list that nobody has contacted in 3 years is a list, not a patient base. Valuation guidance, including IRS Rev. Rul. 59-60, treats owner dependency as a discount to value. When that dependency is not identified and priced during diligence, the buyer may pay for goodwill that will not continue after the seller leaves.
A practical approach is to count active patients using a written, consistently applied definition, such as seen within the last 18 or 24 months. Document recall compliance, and separate transferable enterprise goodwill from personal goodwill before a buyer does it for you. For more on how goodwill and other factors interact, see Dental Practice Valuation: Why The Numbers Differ.
Mistake 5: Ignoring Equipment, Facility, Technology, and Capex
Aging chairs, outdated imaging, worn sterilization equipment, and a dated office often become the buyer’s year-one capital spend. Deferred maintenance usually appears in diligence as a line-item deduction.
Capital and liability findings in a dental practice deal, such as deferred equipment replacement, are commonly deducted dollar-for-dollar from the agreed purchase price, regardless of the valuation multiple. Unlike EBITDA adjustments, which are multiplied by the deal multiple, capital deductions come straight off the price and reduce what the seller receives.
A seller can respond by documenting equipment age and condition, pricing the capital plan before the buyer does, and addressing deferred maintenance where the repair cost is lower than the discount a buyer would apply. Major capital equipment purchases in the 2 to 3 years before sale rarely return their cost through a higher valuation, because buyers often assess equipment age differently than sellers expect. Consult your advisors before making significant pre-sale capital decisions.
Mistake 6: Ignoring Staff Retention, Payer Mix, and Lease Obligations
Transferability risks, the factors that determine whether a practice’s earnings will survive an ownership change, belong in the valuation itself. Three of the most common are key staff who might leave, concentration in one payer, and a short lease with no renewal option.
Provider risk and clinical continuity, declining financial performance, and reimbursement exposure are some of the main reasons DSOs walk away from dental practice deals. Payer concentration above a certain percentage of collections in a single carrier is often quantified as exposure and handled in escrow or as an earnout contingency, because the buyer cannot know whether the carrier will re-paper the practice after the change of ownership.
A short lease can be equally damaging. A short remaining lease term, or a lease without renewal options, can complicate a dental practice sale and reduce the amount a buyer is willing to pay regardless of how strong the clinical and financial numbers look.
The dollar consequence of these risks often appears as a lower multiple, a longer seller employment term, or value shifted into an earnout, all of which reduce what the seller receives at closing. Sellers can improve their position by addressing transferability issues before going to market, securing lease renewals, diversifying the payer mix where possible, and documenting staff retention plans.
Mistake 7: Confusing Enterprise Value with Seller Proceeds
Enterprise value, the headline number a buyer offers, differs from what the seller nets. Between the headline and the wire transfer sit practice debt assumed or paid off at closing, transaction fees, taxes, and deal structure.
Deal structure can be one of the main drivers of the final outcome. In DSO transactions, a portion of the purchase price is typically paid at closing, with the remaining portion deferred through an earnout tied to future performance or retained as equity rollover, which may be reduced or lost if the DSO underperforms or is sold during the earnout period.
How the price is allocated across asset classes changes the tax bill. Goodwill is typically taxed at long-term capital gains rates, while equipment subject to depreciation recapture and non-compete payments are taxed as ordinary income. Because a DSO offer often shifts more of the price into those ordinary-income categories and defers part of the payment, a private sale paid in full at closing can sometimes net more even at a lower headline number.
A seller can compare offers more clearly by modeling after-tax proceeds across deal structures before making decisions. This article is education, not tax or investment advice, so consult your own CPA, attorney, and financial advisor on the specifics of your situation.
Specialty Matters: Where Valuation Nuance Shifts
The seven mistakes above apply to every practice, but the dollar impact of each one often depends on the specialty. Buyer demand and the factors that drive value can shift meaningfully by segment.
A practice’s specialty shapes both buyer interest and the details buyers study most closely. Oral and maxillofacial surgery often commands strong buyer interest and remains among the faster-consolidating segments. Orthodontics and pediatric dentistry can draw significant DSO attention. General dentistry continues to earn aggressive valuations near historical highs, while lighter-demand specialties such as prosthodontics often sit at the lower end of the demand spectrum.
Across all specialties, the same fundamentals usually matter most: profitability, transferability, and the durability of earnings after the owner departs. Specialty affects how buyers weigh those factors rather than replacing them.
Why These Dental Practice Valuation Mistakes Get Caught in Diligence
The re-trade mechanism often follows a consistent pattern. After a letter of intent (LOI) is signed, the buyer’s quality-of-earnings team reviews the practice’s financials in detail. They reset owner compensation to replacement cost, re-cost any contractors misclassified as 1099 workers, reset related-party rent to market, and strike add-backs that do not hold up. A significant percentage of lower-middle-market transactions face post-LOI purchase price adjustments after the buyer’s quality-of-earnings team completes its review.
The asymmetry between buyer and seller preparation can be substantial. Institutional buyers often spend a meaningful amount on buy-side diligence for a single lower-middle-market transaction, while the sell-side may spend very little to prepare. A CPA-led, diligence-grade valuation built before the deal goes to market, with every add-back unpacked and documented, reduces the buyer’s ability to use those findings to re-trade the price.
Where McLerran & Associates Fits
McLerran & Associates is the nation’s largest dental-specific sell-side M&A advisory and brokerage firm, representing the selling dentist and not the buyer. Over roughly 35 years, the firm has evaluated more than 10,000 dental practices, or about 500 per year. It has completed around 2,000 successful practice sales and closed approximately $2 billion in transaction volume. Its transaction rate of roughly 85–90% compares to an industry norm closer to 35–40%.
Each engagement starts with a CPA-led, diligence-grade EBITDA analysis, the kind of work that tends to hold up when a buyer’s quality-of-earnings team reviews it and is less likely to be re-traded. The firm works both transition paths, private-buyer (doctor-to-doctor) and DSO or private equity, in roughly equal measure, giving owners a side-by-side comparison that single-lane brokers may not provide.
The difference a diligence-grade valuation can make often shows up in real numbers. In one case, a free valuation pegged a practice at $2.5 million. McLerran valued it at $4.5 million, and it sold for $5.25 million after a competitive process. The firm runs a structured, auction-like bid process that typically lasts 45–60 days and generates around ten offers. That competition pushes price toward the top of the range instead of letting it settle in the middle. Current dental practice valuations commonly range from 5x to more than 9x EBITDA, and where a practice lands in that range can depend heavily on who is in the room and how the process is run.
Conclusion: How to Vet Any Valuation You Receive
Valuation errors quietly cost sellers money long before anyone reaches the negotiation room, in the spreadsheet that sets the anchor. When you receive a valuation number, ask five questions. Which approaches were used, income, market, and asset, or just one? Was a market-rate replacement salary deducted from owner compensation? Would each add-back survive a buyer’s quality-of-earnings review? How were active patients defined? And what does the number net after debt, fees, taxes, and deal structure?
Owners who already have a number in hand and suspect it may be low, or who want to understand what their practice might be worth before a buyer weighs in, can explore a free, confidential discovery call with McLerran & Associates. Call (512) 900-7989 or email info@dentaltransitions.com, or use the button below to book a confidential call. For owners who want to go deeper, the firm also provides a comprehensive practice valuation built to survive diligence. For more on how valuation and appraisal differ, see Dental Practice Valuation vs. Appraisal for Sellers, and for a candid look at what a free valuation may actually cost, see Is a Free Dental Practice Valuation Worth It?
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Frequently Asked Questions
Why Is a Percentage of Collections a Poor Valuation Method for a Dental Practice?
A percentage of collections measures revenue rather than profitability. As the overhead comparison in Mistake 1 shows, two practices with the same collections can keep very different earnings. A collections percentage prices both the same. Buyers and their lenders usually price on normalized earnings, adjusted EBITDA or seller’s discretionary earnings, so a rule of thumb serves as a sanity check at most. It also misses specialty differences, payer mix, owner dependence, and the effect of an associate who plans to stay.
What Is the Difference Between SDE and EBITDA in a Dental Practice Sale?
Seller’s Discretionary Earnings (SDE) starts with pre-tax profit and adds back the owner’s full compensation, benefits, and personal or one-time expenses run through the practice. It represents the total financial benefit one owner-dentist takes from the practice and is used when the buyer plans to work in the practice as the primary producer. EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) is adjusted differently. It deducts a market-rate salary for the clinical work the owner performs, because a DSO or group buyer will need to pay an employed dentist to do that work. Because EBITDA is a smaller number than SDE for the same practice, the multiple applied to it is larger, which is why a 2x SDE offer and a 4.5x EBITDA offer can describe the same price. Comparing multiples without knowing which earnings figure sits underneath them can be misleading.
How Does Owner Compensation Distort Dental Practice Value?
Owner compensation can distort value in both directions. An owner paying themselves above market rate is effectively taking profit as salary; a buyer’s quality-of-earnings team will add that excess back to earnings, which can increase the normalized EBITDA. An owner paying themselves below market rate, a common pattern among owners who want to show high profit, produces overstated earnings, because the buyer will need to pay a replacement dentist at market rate. That adjustment reduces normalized EBITDA and therefore the purchase price. In one documented case, an owner paying themselves roughly $50,000 below replacement cost translated to approximately $350,000 off the purchase price at a 7x multiple before any other adjustment. A practical step is to reset owner compensation to the actual market cost of replacing the owner’s clinical production before applying any multiple.
What Makes Dental Practice Goodwill Transferable?
Transferable goodwill, sometimes called enterprise goodwill, is tied to the practice’s location, systems, brand, recall engine, and patient base, all of which can survive an ownership change. Personal goodwill is tied to the selling dentist’s chairside relationships, community reputation, and personal referral network, and often leaves when the owner does. The central test is whether the practice can retain patients and produce predictable earnings after the ownership change.
Factors that support transferability include a strong hygiene recall program, diversified production across multiple providers, stable long-tenured staff, a lease that extends well beyond the transition period, and a patient base that returns on schedule rather than following the selling dentist personally. Factors that weaken transferability include the owner producing the majority of dentistry, a thin or absent recall system, and new patients who trace primarily to the seller’s personal network.
How Does Specialty Affect Dental Practice Valuation?
Specialty shapes both buyer demand and the specific value drivers a buyer will scrutinize. The Specialty Matters section above covers how demand can differ across segments and how buyers weigh profitability and transferability in each area. Specialty-specific multiples are not published as a reliable authoritative series, and any fixed multiple assigned to a specialty is better treated as market commentary than as a guarantee.
