The conversation usually starts the same way. An associate has been productive for two or three years, the owner is thinking about the next decade, and someone says "we should talk about partnership." Everyone leaves the conversation feeling good, and then nothing happens for eighteen months because neither party knows what the next step is.
Here is what the next step is. A partnership buy-in has three distinct components, and you have to get all three right: what percentage is being sold and at what price, how the buyer pays for it, and how the two of you will make decisions and eventually unwind. The first two are arithmetic. The third is where partnerships actually break.
This post walks through all three, with a hypothetical example carried all the way through. It is educational, not legal or tax advice. Every buy-in involves securities, tax, corporate, and state dental-practice-ownership law, and the structures vary enough that you need a dental-specific transactional attorney and CPA on each side.
Key takeaways
- The buy-in price starts from a whole-practice valuation, then applies the percentage being sold, then may apply a minority discount because a non-controlling share is genuinely worth less per point.
- Two structures dominate: buying shares or units from the existing owner (money goes to the owner), or the practice redeeming or issuing a new interest (money goes into the practice). The tax consequences differ sharply.
- Financing is usually a bank loan to the buyer, seller financing, or a hybrid. Lenders will underwrite the buyer's compensation, not just the practice's earnings.
- Compensation and profit distribution are separate from ownership percentage, and the agreement must say so explicitly. Most partner disputes trace to ambiguity here.
- The buy-sell provisions, meaning what happens on death, disability, divorce, departure, or deadlock, matter more over a 20-year partnership than the purchase price does.
- A 50/50 split with no tiebreaker mechanism is the most common avoidable structural error in dental partnerships.
What you are actually buying
Before any number, settle what the interest consists of. A partnership share in a dental practice can include some or all of:
- The operating entity: goodwill, patient records, equipment, supplies, receivables, and the practice's cash flow
- The real estate, if the owner holds the building, usually in a separate entity with its own separate percentage
- Any ancillary entities such as a management company, a lab, or an equipment-holding entity
These are frequently sold separately and at different percentages. It is common for an incoming partner to buy 30% of the practice and either nothing of the building or a smaller share of it. Decide this explicitly. "Partner" without a defined scope is a source of later resentment.
Check your state's ownership rules first. Many states restrict who may own a dental practice entity, and some require specific professional entity forms. Some also have rules about the ratio of owner-dentists to locations or about corporate practice of dentistry. Confirm with your state board and attorney before designing a structure.
Step one: valuing the whole practice
A buy-in valuation starts exactly where a full sale valuation starts. You need:
- Trailing collections, typically three years
- Normalized operating overhead at market rates, with personal expenses removed and below-market items (especially owner rent and family payroll) restated
- Pre-doctor cash flow: collections minus normalized overhead, before any dentist compensation
- Adjusted EBITDA: pre-doctor cash flow minus a market-rate wage for the dentistry the owners perform
- A tangible asset schedule for equipment and leaseholds
Our post on how dental practices are valued works this through in full, including why percentage-of-collections and EBITDA multiples give different answers. For a buy-in specifically, two additional points matter, and both are worth settling before anyone names a price.
The associate's own production complicates it
If the incoming partner has been producing a third of the practice's revenue for three years, are they buying a share of value they created? This is the single most emotionally charged question in buy-in negotiations, and there is no universal answer. Common approaches:
| Approach | How it works | When it is fair |
|---|---|---|
| Value the whole practice as is | Buy-in priced off total current collections including the associate's production | When the associate was handed a full schedule from existing patients the owner built |
| Value excluding the associate's production | Price off the practice as it would be without them | Rarely; only if the associate genuinely brought their own patient base |
| Use a historical or blended baseline | Price off collections from a date before the associate ramped up, or an average | Common compromise when the associate clearly grew the practice |
| Set the price and formula in advance | Agreed at hire: valuation method and buy-in date are written into the associate agreement | Best practice. Removes the argument entirely |
The last row is the real lesson. If you are an owner who intends to offer partnership, put the valuation method and a target date in the associate agreement at hire. If you are an associate being recruited with a partnership promise, ask for exactly that. See associate contract red flags and negotiating an associate offer.
Minority discount
A 30% interest that cannot control decisions, cannot force a sale, and cannot easily be sold to a third party is worth less than 30% of the whole. Business appraisers apply discounts for lack of control and lack of marketability for exactly this reason. In dental buy-ins, some discount is common and defensible; whether it is applied, and how much, is negotiated. Owners often resist it; buyers should ask for it and be able to explain why it exists.
Step two: the structure
There are two basic ways money moves, and they are not tax-equivalent.
| Purchase from the owner | Redemption or new issuance by the entity | |
|---|---|---|
| Who receives the money | The existing owner personally | The practice entity |
| Effect on the owner | Owner is cashed out for the percentage sold | Owner is diluted; cash stays in the business or is distributed later |
| Typical tax character for the owner | Often capital gain on the goodwill portion; allocation matters | Depends heavily on entity type and structure |
| Effect on the buyer's basis | Buyer gets basis in the interest purchased | Buyer gets basis in the interest acquired |
| Common use | Most dental buy-ins | When the practice needs capital, or in specific entity or tax situations |
Entity type drives a great deal here. S corporations, C corporations, professional corporations, and LLCs taxed as partnerships each have different consequences for how a buy-in is structured, how income is allocated, and what happens on exit. An LLC taxed as a partnership offers flexibility in allocating income that an S corporation (with its single-class-of-stock rule) does not, which matters enormously for how you handle unequal production between partners. Have both CPAs model the alternatives before anyone signs a letter of intent.
Price allocation is negotiable and it is money. How the purchase price is split between goodwill, equipment, a covenant not to compete, and any consulting or employment payments changes the after-tax result for both parties, usually in opposite directions. It is a real negotiation item, not a formality your accountants handle afterward. Raise it early.
Step three: paying for it
Most incoming partners finance the buy-in. The realistic options:
| Source | Typical terms | Notes |
|---|---|---|
| Bank loan (conventional or SBA) | Commonly 7 to 10 years, amortizing | Lenders that do dental deals will underwrite the buyer's compensation and the practice's cash flow. SBA has specific rules about partial ownership changes; confirm current eligibility with a lender who does these regularly |
| Seller financing | Often 5 to 10 years, interest rate negotiated | Keeps the seller invested in the buyer's success, which cuts both ways. Requires a promissory note and usually a pledge of the purchased interest as collateral |
| Earn-in from compensation | A portion of the partner's compensation is withheld and applied to the purchase over a defined period | Simple cash flow, but the tax treatment can be unfavorable and it blurs the line between compensation and purchase. Get specific CPA guidance |
| Staged percentage purchase | Buy 15% now, 15% in three years, at a formula price | Lowers the entry hurdle and lets both sides test the relationship. The formula for later tranches must be written now |
| Cash | Rare for a first buy-in | Most new partners are still carrying student debt |
Do not let the buy-in payment and the compensation change land in the same month. A new partner frequently sees their compensation structure change at the same moment their loan payment starts. If the new compensation is back-loaded (profit distributions paid quarterly or annually) and the loan payment is monthly, the first year can be genuinely tight. Model twelve months of actual cash flow, month by month, before closing, including taxes. Partners who are personally squeezed make bad decisions about the practice.
The part that actually determines whether it works: governance
Price and financing are a transaction. Governance is a marriage contract, and it is where partnerships fail.
The documents
| Document | What it governs |
|---|---|
| Purchase agreement | The transaction itself: price, allocation, representations, closing conditions |
| Operating agreement or shareholders agreement | How the entity is run: voting, management, distributions, capital calls, transfer restrictions |
| Buy-sell agreement (often inside the operating agreement) | What happens on death, disability, retirement, voluntary departure, termination for cause, divorce, bankruptcy, loss of license, or deadlock |
| Employment agreements for each partner | Compensation, duties, schedule expectations, benefits, restrictive covenants |
| Lease or real estate documents | If the building is owned by one or both partners, how the practice pays for it |
| Promissory note and security agreement | If there is seller financing |
Decisions the operating agreement must resolve
Governance questions to answer in writing
- Which decisions require unanimous consent, which require a majority, and which are day-to-day management?
- Who is the managing partner, what authority do they have, and is there a dollar threshold above which they need consent?
- How is compensation determined: percentage of personal production or collections, salary plus distribution, or a formula?
- How are profits distributed, and is that separate from compensation? (It should be.)
- How is overhead allocated between partners: pro rata by ownership, by production, or by a hybrid?
- How are hygiene profits allocated, and to whom, when a hygienist works under one partner's schedule?
- Who decides on hiring, firing, and wages for staff?
- Who decides on capital expenditures, and above what amount does it require both partners?
- How much time is each partner expected to work, and what happens if one wants to cut back?
- How are vacation, CE days, and coverage handled?
- What happens if one partner wants to sell to a DSO and the other does not?
- Is there a drag-along or tag-along right?
- What is the deadlock mechanism?
The deadlock problem
A 50/50 partnership with no tiebreaker is a structure that works perfectly until the first serious disagreement and then has no way out except litigation or a forced sale. Common mechanisms:
- Uneven split. 51/49 gives someone the vote. Honest, effective, and often emotionally unacceptable to the minority.
- Independent tiebreaker. A named neutral third party, often a practice consultant or accountant, decides specified categories of dispute.
- Mandatory mediation then arbitration. Slower and expensive, but avoids court.
- Shotgun or buy-sell trigger. One partner names a price; the other must either buy at that price or sell at it. Brutal but decisive. Dangerous when the partners have very different access to capital, since the wealthier partner can effectively name a low price knowing the other cannot buy.
Pick one deliberately. The worst choice is to leave it out because the conversation is uncomfortable during a period when everyone likes each other.
A hypothetical worked example
Hypothetical example. All figures are illustrative and do not represent a specific practice or a market survey.
The practice. Two-doctor general practice, $1.8 million in collections. Owner Dr. A produces $1.1 million; associate Dr. B has been there four years and produces $700,000. Normalized overhead before any dentist compensation is $1.08 million (60%), leaving $720,000 of pre-doctor cash flow. Dr. B is currently paid 30% of collections on her production, or about $210,000.
Whole-practice value. Adjusted EBITDA: subtract a market-rate cost for the dentistry performed, say 28% of the $1.8 million, or about $504,000. Adjusted EBITDA is roughly $216,000. An independent appraiser, blending an EBITDA multiple with a percentage-of-collections cross-check, concludes an enterprise value around $1.35 million (75% of collections). The building is owned separately and is not part of this deal.
The share. Dr. B buys 40%. Pro rata that is $540,000. The parties negotiate a 15% minority discount reflecting lack of control and illiquidity, partially offset by veto rights Dr. B receives over major decisions. Price: about $459,000, rounded to $460,000.
Financing. A dental lender finances $360,000 over 10 years; Dr. A carries a $100,000 seller note over 5 years. Combined debt service might run roughly $6,000 a month in this scenario, or about $72,000 a year, depending on rates.
New compensation model. The partners move to: each doctor receives 30% of their own collections as clinical compensation, and the remaining profit is distributed 60/40 by ownership. Dr. B's clinical compensation stays about $210,000. The practice's profit after clinical compensation is roughly $216,000 (matching adjusted EBITDA). Dr. B's 40% share is about $86,000. Total pre-tax: about $296,000, minus $72,000 of debt service, leaving about $224,000 of cash before taxes, versus $210,000 as an associate.
Read that result carefully. In year one, Dr. B is barely ahead on cash and has taken on $460,000 of personal debt and unlimited responsibility. That is normal and it is the correct time to be honest about it. The return comes from three places over the following decade: the loan amortizes and eventually stops, the profit share grows if the practice grows, and Dr. B now owns an appreciating asset she can sell. If Dr. B needs more cash today, the answer is a longer loan term or a smaller initial percentage with a staged second tranche, not pretending the year-one math is better than it is.
Test this arithmetic against your own numbers with the practice loan calculator and the associate pay calculator.
What goes wrong
1. Unequal production with equal ownership and no mechanism
Two 50/50 partners, one producing $1.2 million and one producing $700,000, splitting everything equally. This works for about two years. Then it does not. Separate clinical compensation (tied to individual production) from ownership distribution (tied to percentage) from day one, and allocate overhead in a way both partners can defend.
2. The perpetual promise
An associate is told partnership is coming, works at associate compensation for five years, and the conversation never gets concrete. This is common, and it is usually not malice: the owner genuinely intends it and keeps deferring. If you are the associate, ask for a written valuation method and a date. If there is no date, assume there is no partnership and plan accordingly. If you are the owner, understand that a vague promise is a retention tool with an expiration date, and when it expires you lose a productive associate and the goodwill they built.
3. Different visions that were never discussed
One partner wants to grow to three locations, hire associates, and sell to a DSO in eight years. The other wants a calm two-doctor practice and to work until 68. Both are legitimate. Together, without a plan, they are a slow-motion conflict. Have the conversation explicitly, before the money moves, and write the answer into the transfer and sale provisions. Our post on opening a second location covers what expansion actually demands, and DSO consolidation covers the sale question.
4. Skipping the buy-sell because nobody wants to think about death
If a partner dies without a funded buy-sell agreement, the surviving partner may find themselves in business with the deceased partner's spouse, or facing a buyout obligation with no cash to fund it. Life and disability insurance owned by the entity or cross-purchased between partners is the standard solution, sized to the buyout obligation and reviewed as the value changes. See disability insurance for dentists for how the coverage side works.
Questions each side should ask
If you are the incoming partner
- What exactly am I buying, and does it include the real estate?
- Who did the valuation, and can I have my own appraiser review it?
- Is a minority discount being applied, and what rights am I getting in exchange if not?
- What is my compensation formula after closing, and how does it differ from today?
- Show me twelve months of projected personal cash flow including the loan payment and taxes.
- What decisions can I block? What decisions can I not?
- What happens if I want out in five years? What is the formula and the payment term?
- What happens if you want to sell to a DSO and I do not?
- Is there a path to equal ownership, and what is the formula for the next tranche?
- What restrictive covenant applies to me as a partner, and how is it different from my associate agreement? See non-competes for dentists.
Where to start
If you are an owner considering this, the first step is not a valuation. It is deciding honestly whether you want a partner, with all that implies about shared decisions, or whether you want a highly paid associate and an eventual buyer. Those are different plans, and offering partnership to solve a retention problem creates a bigger problem later.
If you are an associate, the first step is asking for the valuation method and a date in writing. The response tells you almost everything. An owner who is serious will engage with it. An owner who deflects has answered you.
From there: independent valuation, separate counsel on each side, a CPA on each side modeling after-tax outcomes, and a governance conversation that covers deadlock, departure, death, and disagreement over selling the practice. Get those done and the price negotiation is the easy part.
Related reading on ChairsideSource: how dental practices are valued, planning a practice transition five years out, the practice acquisition guide, and associate contract red flags.
Educational content only. It is not legal, financial, tax, or clinical advice. Prices and ranges are approximate and vary by region, condition, and year. Verify current rules with your state dental board and qualified professionals. ChairsideSource is not affiliated with any manufacturer, the ADA, or the DAT.