The Practice Buy-In: What Is Deductible, What Is Basis, What Is Negotiable
A seven-figure buy-in decision usually gets less tax analysis than a car lease. The tax anatomy fits on one page, and two of its lines are negotiable.
A guide by Taxstra Tax & Accounting · CPA-led tax strategy for business owners
Written by Bryan Martin, CPA, Managing Partner and Founder of Taxstra. Last updated August 19, 2026.
The short answer
A buy-in buys basis, not deductions: the equity purchase is after-tax capital you recover at exit, not an expense. The tax value hides in three other places. Interest on buy-in debt for a practice you actively work in is generally deductible under the tracing rules. A Section 754 election steps up your share of the practice's inside basis to your price, manufacturing depreciation and amortization deductions allocated to you for years. And the structure itself is sometimes negotiable: buy-ins funded through reduced compensation shift the cost toward pre-tax dollars. Price all three before you evaluate the offer, because the sticker is not the after-tax cost.
Where the money actually goes, tax-wise
| Component | Tax treatment | What to check or negotiate |
|---|---|---|
| Equity purchase price | Nondeductible; becomes your outside basis | Recovered at exit; document it forever |
| Buy-in loan interest | Generally deductible business interest via tracing for an active partner | Keep loan proceeds cleanly traceable to the purchase |
| 754 step-up on your share of practice assets | Extra depreciation/amortization allocated to you | Ask whether the election exists; request it in the deal |
| Reduced-comp buy-in structures | Effectively pre-tax funding of your equity | Negotiable at many groups; huge at 37% brackets |
| Buying the building interest too | Separate asset, separate depreciation, often separate LLC | Real estate piece frequently the better tax asset |
| Ancillary interests (surgery center, imaging) | Each its own K-1, basis, and rules | Diligence multiplies; so does planning room |
The 754 election deserves the buyer's loudest question because nobody else in the room is incentivized to raise it: it costs the practice administrative work and benefits only incoming buyers. A buy-in priced well above the practice's inside basis without a 754 election leaves your step-up deductions on the table permanently. Ask in writing, before signing.
The after-tax price of a $600K buy-in, three ways
Same $600K partnership stake, three structures (illustrative, 40% combined marginal rate)
- A: Cash/after-tax loan, no 754 election
- True cost ~$600K; interest deductible; no step-up recovery
- B: Same loan, 754 election, $400K of step-up amortizable/depreciable to you
- recovers ~$160K of tax over the recovery years
- C: $300K reduced-comp structure + $300K loan, with 754
- the comp piece funded ~pre-tax (~$120K tax saved) + step-up recovery
- Spread between worst and best structure
- roughly $280K of after-tax difference on the same equity
Identical practice, identical ownership, wildly different after-tax cost, all decided by deal structure that is settled before your first partner distribution. This is why buyer-side tax review belongs in the negotiation, not at the first filing. Illustrative numbers; agreements and state law drive the real ones.
The first-year triple squeeze
The no-cash alternatives deserve their own paragraph because they change the negotiation entirely. Under the long-standing safe harbors, a true profits interest, a share of future profits and growth only, received for services, is generally not taxed when granted, making it the rare form of ownership that arrives without either a check or a tax bill. Groups use it to admit partners who bring production instead of capital, often pairing it with vesting and a later capital purchase at a formula price. The trade is explicit: you skip the loan and the interest expense, but your slice of the existing building, receivables, and goodwill is zero until you buy it, and your exit payout formula will reflect that. When a group offers you a choice between a $600K capital buy-in and a profits-interest track, you are really choosing between owning history and owning the future, and the after-tax comparison depends on the group's growth rate, your bracket, and how long you will stay, a genuinely modelable question that too many associates answer by cash-on-hand alone.
Buy-in documents on your desk? Get buyer-side eyes on them.
Walk us through your situation and we'll tell you how we can help. 30 minutes, free, no pressure.
Frequently Asked Questions
Is a practice buy-in tax deductible?
The purchase itself, no: buying equity is a capital investment that becomes your basis, paid with after-tax dollars. What IS deductible: interest on a loan used to buy into an active practice you materially participate in (traced as business interest), and the ongoing depreciation or amortization the entity itself passes through. The buy-in you deduct is the exception, not the rule, which is why the after-tax cost is bigger than the sticker.
What is the difference between buying in with pre-tax versus after-tax dollars?
Some groups structure part of the buy-in as reduced compensation for a period (you earn less, the forgone amount funds your equity), which functions like paying with pre-tax dollars; others require a check or a loan, which is after-tax. At high physician brackets the difference on a large buy-in is enormous, and it is negotiable more often than buyers assume.
What is a Section 754 election and why should a buyer care?
When you buy a partnership interest, the practice can elect under Section 754 to step up YOUR share of the inside basis of its assets to what you paid. That step-up produces extra depreciation and amortization deductions allocated specifically to you, real money recovered over the following years. Buyers should ask, before closing, whether the election is in place or will be made.
How does buying in through my own entity change things?
Routing a partnership interest through your single-member LLC changes little federally (it is disregarded), and routing it through an S-corp can create real problems: eligibility issues for the practice’s structure, basis complications, and self-employment tax positions that draw scrutiny. Entity gymnastics around a buy-in need practice-level and personal-level review before anything is signed, not clever ideas from a forum.
What diligence should I do on the practice before buying in?
Beyond the economics: the partnership agreement’s allocation and distribution provisions (including tax distributions), the debt you are indirectly taking on, whether a 754 election exists, how prior buy-ins and buyouts were handled, unfunded liabilities, and the exit terms you would face someday. Hiring your own CPA to review the financials and agreement, separate from the practice’s accountant, is standard and worth it.
What is a profits interest, and is it better than buying in with cash?
A profits interest grants you a share of FUTURE profits and appreciation with no claim on existing capital, which is why a properly structured grant is generally not taxable at receipt. You avoid writing the big check; in exchange, you own none of the value built before you arrived. For young partners short on cash it is often the better door, and many groups blend the two: a small capital purchase plus a profits interest that vests.
What happens to the buy-in if I leave the group early?
Whatever the agreement says, which is why the exit provisions are buy-in diligence, not future reading. Look for the repurchase formula (book value, appraised value, or a fixed schedule), payment terms on the way out (lump sum versus a multi-year note), vesting on any profits interest, and what happens on death or disability. The tax character of your eventual buyout payments is set by these clauses years in advance.
Is the interest on my buy-in loan always deductible?
For an active partner in the practice, interest traced to the purchase of the interest is generally deductible business interest against your share of practice income. The tracing is the fragile part: run the loan proceeds cleanly to the purchase (no commingling through the family checking account), keep the loan documents with the buy-in papers, and the deduction defends itself.
Related Questions
Price the Buy-In After Tax Before You Sign It
Book a free 30-minute call to walk through your situation. We'll tell you exactly how our CPA-led team can help, and whether we're the right fit.
What to Expect on the Call
This page is educational, not individualized tax advice. Outcomes depend on your specific facts and documentation. Savings vary by client and results are not typical of every situation. Consult a qualified tax professional before acting on anything here.