Two offers on the same practice at the same headline number can differ by six figures after tax. Here is where the difference comes from.
| THE SHORT ANSWER In an asset sale, the buyer purchases the practice’s individual assets — equipment, goodwill, leasehold improvements, patient records. In a share sale, the buyer purchases the shares of your professional corporation and takes the business as a whole, liabilities included. Buyers almost always prefer asset sales, because they get a fresh cost base to depreciate and leave historical liabilities behind. Sellers almost always prefer share sales, because shares of a qualifying professional corporation may be eligible for the lifetime capital gains exemption — which can shelter a substantial portion of the gain from tax entirely. That single difference is why two identical headline prices can produce very different after-tax outcomes, and why structure should be settled before you negotiate price, not after. |
Most practice owners begin the sale process focused on one number: what is my practice worth? It is the right question, and it is not the last one.
The question that decides what actually lands in your account is how the deal is structured. Two buyers can offer identical headline prices, and after tax you may keep materially more from one than the other. Owners regularly discover this after a letter of intent has been signed, at which point the leverage to change it is largely gone.
This article explains the two structures, why each side wants a different one, and the Canadian tax provision that sits at the centre of the negotiation.
What is an asset sale?
In an asset sale, the buyer purchases specific assets of the practice rather than the company that owns them. A typical purchase includes clinical equipment, leasehold improvements, furniture, supplies, patient or client records, the practice name, and goodwill — usually the largest component by value.
The corporation itself stays with you. So do its liabilities, its history, and whatever else sits on the balance sheet. After closing you are left holding a corporation containing cash proceeds and any assets the buyer did not want, and you then have to get that money out of the company, which is its own tax event.
Why buyers prefer it
- A fresh cost base — the buyer allocates the purchase price across the assets acquired and depreciates them from that new, higher base, producing real tax deductions in the years after closing.
- Clean liability separation — the buyer does not inherit the corporation’s history: no unknown tax reassessments, no prior employment claims, no contractual obligations they did not agree to.
- Selectivity — the buyer can decline assets they do not want, from an aging piece of equipment to an unfavourable supplier contract.
What is a share sale?
In a share sale, the buyer purchases the shares of your professional corporation. The corporation continues to exist unchanged — same entity, same contracts, same history — only the ownership changes.
For the seller this is usually cleaner and usually better after tax. The proceeds go to you personally as a capital gain rather than into the corporation, which removes the second step of extracting funds from the company. And if the shares qualify, a significant portion of that gain may be exempt from tax entirely.
Why buyers resist it
- No step-up in cost base — assets keep their existing depreciated values rather than being written up to the purchase price, so the buyer loses years of deductions.
- Inherited liabilities — the buyer takes the corporation as it is, including anything historical that has not surfaced yet. This drives deeper and more expensive due diligence.
- Licensing restrictions — in most provinces, only licensed practitioners in the same profession may hold voting shares of a professional corporation. That can narrow your buyer pool to other licensed practitioners and rule out some corporate or investor buyers entirely, or require a restructure before closing.
| Factor | Asset Sale | Share Sale |
| What transfers | Selected assets and goodwill | The entire corporation |
| Liabilities | Generally stay with the seller | Transfer to the buyer |
| Buyer tax position | Favourable — fresh depreciable base | Less favourable — no step-up |
| Seller tax position | Less favourable — often two tax layers | Often favourable — capital gain, possible LCGE |
| Due diligence | Lighter and faster | Deeper, longer, more costly |
| Buyer pool | Wider, including corporate buyers | May be limited by professional licensing rules |
| Typical preference | Buyer | Seller |
| Know what your practice is worth before you’re asked to structure a deal. IS Advisory provides independent valuations for dental, medical, pharmacy and veterinary practices across Canada — so you enter negotiations knowing your number and understanding what different structures mean for it. Book a confidential consultation at isadvisory.ca |
The lifetime capital gains exemption: the biggest number in the negotiation
This is why share sales matter so much to Canadian practice owners.
The lifetime capital gains exemption allows an individual to shelter a substantial capital gain realised on the disposition of qualified small business corporation shares. The exemption limit is indexed and has been adjusted by legislation more than once in recent years, so the current figure should be confirmed with your accountant for the year of your sale — but it is well over a million dollars per individual, and it applies to gains on shares, not on assets.
The practical consequence is direct: in a qualifying share sale, a meaningful portion of your gain may be exempt from tax outright. In an asset sale it is not available on the assets, and the proceeds typically face tax inside the corporation and again when you extract them personally.
Does your corporation actually qualify?
The exemption is not automatic. Broadly, qualification depends on three tests, and each of them can be failed by accident:
1. The asset test at closing — substantially all of the corporation’s assets must be used principally in an active business carried on primarily in Canada at the time of sale.
2. The holding period test — the shares must generally have been owned by you or a related person throughout the 24 months preceding the sale.
3. The 24-month asset test — throughout that same period, more than half of the corporation’s assets must have been used principally in the active business.
The most common reason a practice fails these tests is not exotic. It is cash. Owners who have retained earnings in the corporation over many years, or who hold an investment portfolio or a passive real estate interest inside the same entity, may find that those assets are enough to disqualify the shares.
| THIS IS WHY TIMING MATTERS MORE THAN NEGOTIATION Bringing a corporation into qualifying condition — often called purification — takes planning, and one of the tests looks back 24 months. An owner who decides to sell in March and closes in September has already lost the ability to fix certain problems. The window to protect your exemption opens two to three years before a sale, not two to three months. |
How the gap gets negotiated
Because the two structures produce different outcomes for each side, the difference becomes a negotiating item rather than a fixed obstacle.
A buyer insisting on an asset sale is asking you to accept a worse after-tax result so they can have a better one. The standard response is a price adjustment: if the structure costs you a defined amount in additional tax, the headline price moves to compensate. That conversation is only possible if you know the number, which means modelling both structures before you respond to an offer — not after.
Sometimes the right answer genuinely is an asset sale. If your shares will not qualify for the exemption regardless, much of the argument for a share sale disappears, and an asset sale with a well-negotiated price and a wider buyer pool may serve you better. The point is not that share sales always win. It is that the decision should be made with the arithmetic in front of you.
Where the rest of the value moves
- Purchase price allocation in an asset sale — the split between goodwill, equipment and leasehold improvements affects both parties’ tax positions and is negotiable.
- Earn-outs — payments contingent on future performance are taxed differently from proceeds at closing, and can affect exemption planning.
- Rollover equity — common in corporate and private equity deals. How the rollover is structured determines whether it is a taxable event now or deferred.
- Holdbacks and escrow — money held back against future claims delays proceeds and sometimes changes their character.
What to do two to three years before you sell
The owners who keep the most are rarely the ones who negotiated hardest. They are the ones who prepared earliest.
1. Get an independent valuation. Not a broker’s opinion attached to a listing, and not a multiple you heard at a conference — a defensible number you can plan around.
2. Review your corporate structure with your accountant against the exemption tests, specifically the 24-month look-back.
3. Address purification if excess cash or passive assets sit inside the operating corporation. This takes time and cannot be done at closing.
4. Consider whether a family trust or spousal shareholding could multiply the exemption across more than one individual. This requires lead time and professional advice.
5. Clean up the financials. Normalise owner compensation, remove personal expenses from the books, and document recurring revenue. This raises valuation and shortens due diligence.
6. Model both structures before any offer arrives, so that when a buyer proposes an asset sale you already know what it costs you and what price adjustment restores you.
None of this is exotic planning. It is ordinary preparation done early enough to still be available.
Frequently asked questions
What is the difference between an asset sale and a share sale?
In an asset sale the buyer purchases specific assets of the practice — equipment, leasehold improvements, records and goodwill — while you keep the corporation and its liabilities. In a share sale the buyer purchases the shares of your professional corporation and acquires the business as a whole, liabilities included. Buyers generally prefer asset sales for the fresh depreciable cost base; sellers generally prefer share sales for the potential capital gains exemption.
How much tax will I pay when I sell my practice in Canada?
It depends primarily on structure. A qualifying share sale can shelter a substantial portion of the gain through the lifetime capital gains exemption, with the balance taxed as a capital gain. An asset sale typically produces tax inside the corporation and again when proceeds are extracted personally, and may include recapture of previously claimed depreciation. The difference between the two on the same headline price is frequently six figures. Model both with your accountant before agreeing to a structure.
Do my practice shares qualify for the lifetime capital gains exemption?
Only if the corporation meets the qualified small business corporation tests: substantially all assets used principally in an active business carried on primarily in Canada at the time of sale, ownership of the shares by you or a related person for the preceding 24 months, and more than half the assets used in the active business throughout that period. Retained cash, investment portfolios or passive assets inside the operating corporation commonly cause a failure. Have your accountant assess this two to three years before you intend to sell.
Why do buyers prefer an asset sale?
Three reasons. They receive a fresh cost base on the assets acquired and can depreciate from that higher value, producing deductions after closing. They avoid inheriting the corporation’s historical liabilities, including unknown tax or employment exposures. And they can decline assets and contracts they do not want. Each of these advantages comes at the seller’s expense, which is why structure is a negotiating item rather than an administrative detail.
Can I still sell if my shares don’t qualify for the exemption?
Yes. Practices sell as asset sales routinely, and where the exemption is unavailable much of the argument for a share sale falls away. An asset sale can also attract a wider buyer pool, since professional licensing rules in most provinces restrict who may hold shares of a professional corporation. The important thing is to price the structure into the deal rather than accepting it as a default.
When should I start planning the sale of my practice?
Two to three years before you intend to close. One of the exemption tests looks back 24 months, so a corporation that needs purification cannot be fixed once a sale is already underway. Early planning also allows time to normalise financials, document recurring revenue and address anything that would surface unfavourably in due diligence — all of which support valuation as well as tax position.
This article is general information for Canadian healthcare practice owners and is not tax, legal or accounting advice. Tax legislation, exemption limits and inclusion rates change, and the right structure depends entirely on your corporation’s specific circumstances. Work with your accountant and legal counsel on any transaction, and obtain an independent valuation before you negotiate.
| Selling in the next three years? The planning window is now. IS Advisory provides independent healthcare practice valuations and transaction advisory across Canada — dental, medical, pharmacy and veterinary. We work alongside your accountant so that structure, timing and price are decided together rather than in sequence. Book a confidential consultation at isadvisory.ca |