Ontario Dentist Dying in 2026 with $3M in Professional Corporation Shares: Deemed Disposition, the LCGE Eligibility Test, and What the Estate Actually Nets

The Scenario: A Mississauga Dentist Dies Holding $3M in Professional Corporation Shares

Dr. Sharma built a successful dental practice in Mississauga over 22 years. The professional corporation was her main wealth vehicle — she paid herself a reasonable salary, contributed to her RRSP, and let the rest accumulate inside the corp. Her accountant invested the excess corporate cash in a portfolio of GICs and mutual funds. Nobody flagged that this portfolio was quietly disqualifying her shares from the single largest tax shelter available to incorporated professionals at death.

Deemed Disposition at Death: Section 70(5) and What It Means for Private Company Shares

Under section 70(5) of the Income Tax Act, Dr. Sharma is deemed to have sold every capital property she owned at fair market value immediately before death. This includes her professional corporation shares.

The shares don't need to be actually sold. No buyer is required. The CRA treats death as a taxable event — the gain between the ACB and FMV is reported on Dr. Sharma's terminal T1 return, and the estate inherits the shares with a new ACB stepped up to the $3,000,000 FMV.

How this gain is taxed — and whether any of it can be sheltered — depends entirely on whether Dr. Sharma's professional corporation shares qualify as QSBC shares.

For a deeper walkthrough of how deemed disposition works on all types of capital property at death, see our capital gains and deemed disposition at death guide.

The LCGE Eligibility Test: Three Tests, One Common Failure Point

The Lifetime Capital Gains Exemption (LCGE) under section 110.6 of the Income Tax Act allows an individual to shelter approximately $1,250,000 of capital gains on the disposition of qualified small business corporation (QSBC) shares (indexed annually since the 2024 federal budget). On a $2.8M gain, this exemption is worth roughly $424,000 in tax savings. But the shares must pass three tests at the time of death.

Test 1: The 90% Active-Business-Asset Test (at the Moment of Death)

At the instant of deemed disposition, 90% or more of the corporation's assets by fair market value must be used principally in an active business carried on primarily in Canada. Active-business assets for a dental professional corporation include dental equipment, leasehold improvements, patient lists (goodwill), accounts receivable, and working-capital cash. Passive investments — GICs, mutual funds, portfolio holdings, excess cash beyond working-capital needs — are not active-business assets.

Test 2: The 50% Active-Business-Asset Test (24-Month Lookback)

For the entire 24-month period ending at the time of disposition, more than 50% of the corporation's assets by FMV must have been used in active business. This is a lower bar but a longer lookback. Even if the corporation passes today, a period where passive investments exceeded 50% anytime in the prior two years fails this test.

Test 3: The 24-Month Holding Period

The shares must have been owned by the individual (not a holding company, not a family trust) for at least 24 months before disposition. Dr. Sharma incorporated in 2004 and held the shares personally for 22 years — this test passes easily.

Scenario A: The Tax Bill Without the LCGE

Dr. Sharma's shares fail the 90% test. The entire $2,800,000 capital gain is taxable under the 2026 tiered inclusion rules.

That $977,000 is just the capital gains tax on the shares. Add Ontario probate ($44,250 on the full $3M through a single will), executor fees (~$75,000), and legal and accounting costs (~$35,000), and the total estate cost reaches approximately $1,131,000.

Dr. Sharma's children expected to inherit $3,000,000. They net roughly $1,869,000.

Scenario B: The Tax Bill With the LCGE

Now assume Dr. Sharma's accountant had purified the corporation three years before her death — moving $300,000 of passive investments to a separate holding company via a section 85 rollover, bringing the active-asset ratio above 90%. The shares qualify as QSBC shares.

The LCGE alone cuts the capital gains tax by $424,000. But the planning doesn't stop there — a secondary will and the post-mortem pipeline save more.

The Secondary Will: Avoiding $44,250 in Ontario Probate

Ontario's Estate Administration Tax charges $0 on the first $50,000, then $15 per $1,000 above $50,000. On $3,000,000 of professional corporation shares passing through a single will:

• $15 × 2,950 = $44,250

But private company shares do not require probate to transfer. No land registry office demands a Certificate of Appointment of Estate Trustee. No financial institution holds them in trust. The corporation's minute book and share register are updated by the estate lawyer directly.

Ontario allows multiple wills: a primary will for assets that require probate (real estate, bank accounts) and a secondary will for assets that don't (private company shares, personal property, shareholder loans). The secondary will is never submitted to the court and never triggers the Estate Administration Tax.

On a $3M professional corporation shareholding, the secondary will saves $44,250 in probate. Legal cost to set up dual wills: $1,500–$2,500. For a full analysis of Ontario probate strategies, see our how to avoid probate in Ontario guide.

The Post-Mortem Pipeline: Extracting Corporate Surplus Without Double Taxation

Here is the problem that catches most estates off guard. Dr. Sharma's corporation has approximately $2,500,000 of retained earnings. The estate now owns shares with a stepped-up ACB of $3,000,000 (thanks to deemed disposition). The children want to wind up the corporation and take the cash.

If the estate simply redeems the shares from the corporation, section 84(3) treats the difference between the redemption proceeds and the corporation's paid-up capital (PUC) as a deemed dividend. On a corporation where PUC is $200,000 and redemption proceeds are $2,500,000, that is a $2,300,000 deemed dividend — taxable to the estate at dividend rates. The same economic value that was already taxed as a capital gain on the terminal return gets taxed again as a dividend.

How the Pipeline Works

1. The estate incorporates a new holding company (NewCo) — a straightforward Ontario incorporation, costs a few hundred dollars
2. The estate sells the professional corporation shares to NewCo for $3,000,000, payable via a promissory note. No tax: the estate's ACB is $3M (stepped up at death), sale price is $3M, gain is $0
3. NewCo now owns the professional corporation and can access retained earnings through intercompany dividends (tax-free between connected Canadian corporations under section 112)
4. NewCo pays down the promissory note to the estate over one to two taxation years using those intercompany dividends. The estate receives capital repayments — not dividends, not income
5. Result: Corporate surplus flows to the heirs as return of capital. The only tax paid was the capital gains tax on the terminal return

The CRA has generally accepted pipeline transactions where the promissory note is repaid within a reasonable period (one to two taxation years), the transactions have economic substance, and the arrangement is implemented promptly after death. An aggressive timeline or artificial structure risks a GAAR (General Anti-Avoidance Rule) challenge. This is a strategy that requires an experienced estate tax accountant — the implementation details matter.

For more on how professional corporation retained earnings are taxed at death, see our professional corporation on death guide for Ontario doctors and dentists.

What the Estate Actually Nets: Side-by-Side Comparison

The gap: roughly $503,000–$508,000. The heirs expected $3,000,000. Without planning, they get $1,869,000. With planning, they get roughly $2,375,000. Neither outcome is $3M — but the planned outcome preserves $500K more, and the unplanned one also carries the risk of an additional $400K+ in deemed-dividend double taxation if the executor doesn't implement a pipeline.

What Should Have Happened: The Planning Checklist for Incorporated Professionals

If Dr. Sharma had spoken to an estate-focused accountant at age 60, four years before her death, here is what the planning would have looked like:

1. Annual QSBC compliance review

Every year-end, the accountant calculates the active-asset ratio. If passive investments are creeping toward 10% of total corporate FMV, action is taken immediately: pay out excess cash as dividends, purchase active-business assets, or transfer passive investments to a separate holding company under section 85.

2. Corporate purification (if needed)

Transfer passive investments to a new holding company on a tax-deferred basis. The operating professional corporation retains only active-business assets. The 24-month holding-period clock restarts on the 50% test after purification — so this needs to happen well before any anticipated disposition. At age 60, there is time. At age 70 with a health diagnosis, there may not be.

3. Dual wills

A primary will for assets requiring probate and a secondary will for the professional corporation shares. On a $3M shareholding, this saves $44,250 in Ontario EAT for a $1,500–$2,500 legal fee.

4. Estate freeze consideration

An estate freeze at age 60 would have locked Dr. Sharma's share value at the then-FMV (say $1,800,000), issued new growth shares to her children, and used her LCGE on the frozen shares while alive. All future appreciation accrues on the children's shares at their low cost base. On a practice that appreciated $1.2M between age 60 and death at 64, the freeze saves the estate from paying capital gains tax on that $1.2M of growth — roughly another $300K+ in tax.

For a detailed walkthrough of the estate freeze for dentists, see our Ontario dentist estate freeze and LCGE guide.

5. Life insurance to cover the remaining tax

Even with the LCGE and pipeline, roughly $553,000 in capital gains tax is still owed. A corporately-owned permanent life insurance policy with a death benefit of $600,000 creates immediate liquidity at death. The death benefit is received by the corporation tax-free and can be distributed to the estate via the capital dividend account (CDA) — also tax-free. The annual premium for a healthy 60-year-old female on a $600K policy: roughly $12,000–$18,000, paid with corporate after-tax dollars.

The Decision That Matters Most

Every incorporated professional in Ontario — dentists, doctors, lawyers, accountants, engineers — faces the same structural risk. The professional corporation is an excellent vehicle for tax-deferred wealth accumulation during your working years. But the same retained earnings that make the corporation valuable also disqualify the shares from the LCGE if they accumulate as passive investments.

The fix is not complicated. It is an annual conversation with your accountant: “What is my active-asset ratio? Am I above 90%? If not, what do we do before year-end?” That conversation — and the $5,000–$10,000 in cumulative professional fees over a career — is worth $424,000 in LCGE savings plus $44,250 in probate savings plus the avoidance of a six-figure double-taxation trap on retained earnings.

Dr. Sharma's children inherited $1,869,000 instead of $2,375,000. The $506,000 gap wasn't caused by bad investing or bad luck. It was caused by not asking one question about a balance-sheet ratio.

For the comprehensive framework on how Canada taxes estates at death, see our inheritance tax Canada 2026 complete guide. For a full walkthrough of the LCGE on business sales, see our lifetime capital gains exemption guide.