A professional practice — a law firm, an accounting practice, a medical or dental clinic — is priced and diligenced like any other services business, right up until the ownership question. That question does not have the same answer here that it has everywhere else in this hub, and getting it wrong is a structural problem, not a negotiating one.
Key takeaways
STEP 01 OF 10
Treadstone Law's own guidance on this exact question states it plainly: "Ownership in many professional corporations is restricted to licensed members of the profession, which limits who can actually buy a departing partner's interest compared with an ordinary business." Before modelling a fund's own equity position, confirm what the governing regulatory body for the specific profession — law, accounting, medicine, dentistry and others each have their own rules — actually permits. This is a structural constraint on the deal, not a term to be negotiated around.
STEP 02 OF 10
A fund that cannot hold voting equity in the professional corporation directly still has real options — investing in a non-professional entity that provides management, administrative or facilities services to the practice under a services agreement is the common shape, though the specific mechanics and what a given regulator will permit vary by profession and were not independently verified for this guide. Treat any specific structure as a proposal to test with the profession's regulatory body and with counsel, not as a settled fact this guide can confirm on its own.
STEP 03 OF 10
The Employee Ownership Trust rollover requires that "neither the subject corporation nor an affiliate in which it holds shares is a professional corporation," under ITA s. 110.61(1)(c) — and the parallel worker co-operative conversion route in s. 110.62 carries the identical exclusion. Where a professional practice's founders are weighing succession options, this route is off the table from the start, which changes the field of realistic structures down to an ordinary sale, an internal partner buyout, or the services-agreement model in the previous step.
STEP 04 OF 10
Unlike the EOT and co-op routes, the lifetime capital gains exemption under ITA s. 110.6 carries no professional-corporation carve-out on its face — a qualifying professional corporation's shares can potentially still meet the QSBC active-business and ownership tests. Do not assume the EOT exclusion extends to the LCGE; the two provisions are tested independently, and conflating them either overstates or understates a departing partner's actual tax position.
STEP 05 OF 10
Treadstone Law's guidance is specific on this point: "the departing partner's professional obligations don't simply end because their ownership does." A departing partner remains bound by confidentiality and, depending on the profession, file-retention and client-notification duties independent of the sale itself — obligations that run to the individual, not the entity, and that an ordinary business sale simply does not carry. Build the client- or patient-notification and file-transfer process as its own line item in the transition plan, not folded into general post-closing integration.
STEP 06 OF 10
Ontario's ESA non-compete prohibition carries a sale-of-business exception on its literal terms for "a sale or lease of a business… operated as a sole proprietorship or a partnership" where the seller becomes an employee of the purchaser — see the ESA's own non-compete guide. Many professional practices — law firms in particular — operate as partnerships rather than corporations, which puts them inside this exception's literal wording in a way the ordinary corporate share sale used elsewhere in this hub is not. Confirm the practice's actual entity structure before assuming either answer; a practice that has incorporated its professional corporation falls back into the same gap covered in reducing owner dependence before you sell.
STEP 07 OF 10
Treadstone Law's guidance names this directly: "Regulatory body rules should be checked alongside the ordinary purchase-agreement mechanics." Depending on the profession, the governing body may require notice, approval, or a specific filing before a change in ownership or partnership structure takes effect — build this into the closing conditions and the timeline rather than treating it as a formality that runs in parallel with legal closing.
STEP 08 OF 10
Deavo's own framing for this sector names the risk directly: "A recurring fee base transfers; a founder's personal relationships often don't. Buyers price that difference." See the professional services sector snapshot, which puts SDE multiples for this sector at 3.0–5.0× and time-to-sell at 6–12 months, and names client concentration as the #1 diligence snag. A book of business concentrated in relationships the departing partner personally holds is a materially different asset than the same revenue spread across the practice's institutional client relationships.
STEP 09 OF 10
Client and patient files carry their own retention and transfer obligations under the specific profession's regulatory framework, layered on top of the general ITA s. 230(4)(b) six-year books-and-records retention floor that applies to the practice's own financial records. Treat the two as separate compliance tracks — a diligence review that only checks financial-record retention will miss the client-file obligation entirely.
STEP 10 OF 10
Where the deal's economics are underwritten on a debt-service coverage basis, deavo's own capital-stack bands — "illustrative ranges," carrying an explicit disclaimer — put minimum DSCR at roughly 1.25× on SDE or 1.30× on EBITDA. See the worked example below for how that band translates into a minimum earnings requirement on an actual financing package, and confirm the specific lending structure against whichever entity the ownership-restriction analysis above actually allows to hold debt.
Assuming a fund can buy voting equity in a professional corporation the way it buys any other target. Ownership in many professional corporations is restricted to licensed members of the profession. Confirm the specific regulator's rule before modelling any equity position.
Assuming the EOT professional-corporation exclusion also removes LCGE eligibility. The two provisions are tested independently. A qualifying professional corporation's shares can still meet the QSBC tests even where the EOT route is unavailable.
Treating client confidentiality and file-transfer obligations as a subset of general post-closing integration. These obligations attach to the departing professional individually and do not end with a change of ownership. Build them as their own workstream.
Assuming the ESA non-compete sale exception applies, or does not apply, without checking the practice's actual entity structure. A partnership-structured practice may fall inside the literal exception where an incorporated one does not. Confirm the structure before promising, or ruling out, an enforceable non-compete.
Scenario, illustrative only — deavo's own bands carry an explicit disclaimer and are not a lending commitment. A buyer's proposed financing structure for a professional-practice acquisition carries annual debt service of $200,000. Applying deavo's own illustrative minimum DSCR of roughly 1.25× on SDE: minimum required SDE = $200,000 × 1.25 = $250,000. Applying the EBITDA-basis figure of roughly 1.30× instead: minimum required EBITDA = $200,000 × 1.30 = $260,000. The two bases are not interchangeable — using the SDE minimum against an EBITDA figure, or the reverse, understates the actual earnings cushion a lender is likely to require, since SDE typically runs higher than EBITDA on the same business once owner compensation is added back.
It depends entirely on the specific profession's regulatory rules, which vary by field and by province. Confirm with the governing regulatory body and counsel before assuming either a yes or a no.
No — it attaches to the departing professional individually and continues independent of the ownership change. Build the transition plan around that, not around the closing date.
A services-agreement or management-company structure can still capture much of the practice's economics without holding professional-corporation equity directly — though the specific mechanics need independent regulatory and legal confirmation for the profession in question, which this guide does not supply on its own.
No — it is deavo's own illustrative range, carrying an explicit disclaimer that it is not a valuation, deal or lending opinion. Use it as a directional planning input, not an underwritten term.
A 30-minute call works through the ownership-restriction question against the specific profession.
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