Treadstone Associates
Case File · Tax on Exit

Splitting proceeds across a spouse and a trust

Anonymised, illustrative composite. One founder's exemption would have sheltered a fraction of the gain on sale. Four qualifying claimants, each within the statutory cap, sheltered all of it.

Treadstone Associates · Updated 2026

At a glance

  • • A discretionary family trust and a spouse held qualifying shares alongside the founder ahead of an arm's-length share sale.
  • • Gross capital gain on sale: $3,400,000, a $1,700,000 taxable capital gain under the ordinary one-half inclusion rule.
  • • The trust designated its share of the gain to two adult-child beneficiaries; each of the four individuals claimed against their own exemption cap.
  • • $425,000 of taxable gain per claimant — inside each person's $625,000 cap — left nothing taxable, against $1,075,000 that would have stayed taxable on a single claim.

The situation

A founder had put a family trust in place several years before any sale was contemplated, as part of a broader estate freeze that gave the trust and a spouse growth shares in the operating company alongside the founder's own holdings. See the estate freeze glossary entry for the structure that put those shares in place. Years later, an arm's-length buyer agreed to acquire the company outright for a price that produced a $3,400,000 gross capital gain on the shares as a whole.

The problem

The lifetime capital gains exemption is a personal deduction. Subsection 110.6(2.1) lets an individual who disposed of a qualified small business corporation share deduct “such amount as the individual may claim not exceeding the least of” four figures, the first of which is “the amount determined by the formula in paragraph (2)(a),” a formula built on $625,000. It is a deduction in computing that individual's taxable income — so the ceiling attaches to the person, not to the corporation and not to the sale. A single claimant selling $3,400,000 of qualifying shares realises a $1,700,000 taxable capital gain under the ordinary section 38(a) half-inclusion rule — and can shelter at most $625,000 of it, leaving $1,075,000 taxable regardless of how long the exemption has sat unused.

The numbers

With four qualifying individuals in the ownership structure — the founder, the spouse, and two adult children as trust beneficiaries — the $1,700,000 taxable capital gain split roughly evenly worked out to $425,000 per claimant. Each figure sat comfortably under the $625,000 statutory cap, so each of the four individuals sheltered their full allocated share and none of it went to waste against an unused portion of anyone's cap. Total sheltered: the full $1,700,000, leaving nothing taxable on the sale — against $1,075,000 that would have remained taxable had only the founder claimed.

The rule that decided it

The mechanism that let the trust's beneficiaries claim at all is the trust's own designation power, and it takes two provisions rather than one. Subsection 104(21) lets a trust designate an amount of its net taxable capital gains to be deemed a taxable capital gain of a beneficiary — but it does that only “for the purposes of sections 3 and 111, except as they apply for the purposes of section 110.6.” On its own it therefore carries no exemption with it. Subsection 104(21.2) is the provision that does the work: where a personal trust has made a s. 104(21) designation, it requires the trust to designate its eligible taxable capital gains as well, and deems the beneficiary to have a taxable capital gain “from a disposition of a capital property that is a qualified small business corporation share…of the beneficiary” for the purposes of the sections as they apply to section 110.6 — which is what let each beneficiary, not the trust, stand as the individual claiming their own portion. Without that designation the trust's share of the gain would have been taxed at the trust level with no personal exemption available to offset it at all.

The exemption cap itself did the rest of the work: because subsection 110.6(2.1) sets the cap per individual, four qualifying claimants meant four separate $625,000 ceilings, and because each individual's allocated share of the gain landed under that ceiling, none of the four caps was even fully used.

One rule that is often assumed to block this did not apply, and it is worth saying why rather than leaving it unaddressed. Subsection 104(21.2) makes its deeming operate “for the purposes of section 120.4” — the tax on split income — so the designated gains land squarely inside the TOSI machinery. They escape it because paragraph (d) of the excluded amount definition in subsection 120.4(1) carves out “a taxable capital gain for the year from the disposition by the individual of property that is, at the time of the disposition…qualified small business corporation shares,” unless the amount would be deemed a dividend under s. 120.4(4) or (5) — provisions that bite only on a specified individual who “has not attained the age of 17 years before a taxation year” and only where the shares are transferred to a person with whom that individual does not deal at arm's length. All four claimants here were adults, the shares qualified, and the buyer was unrelated, so TOSI took nothing. Change any one of those facts and the analysis moves.

The outcome

The sale closed with the trust designating its allocated share of the gain out to the two beneficiaries in the year of disposition, each of the four qualifying individuals filing their own claim against the exemption, and the full $1,700,000 taxable capital gain sheltered with room to spare on every claim. The structure that made this possible had been in place for years before the sale was ever discussed — for the case where a similar structure failed because it was assembled too close to closing, see shares that failed the holding period test, and for the parallel test the underlying shares still had to clear, passive investments that blocked the exemption.

What it would have cost otherwise

A founder who owned every share personally, with no trust or spouse in the structure, would have faced exactly the same $3,400,000 gross gain and the same $1,700,000 taxable amount — but with only one $625,000 cap available against it, $1,075,000 would have stayed fully taxable with no further relief. Multiplying the number of qualifying claimants ahead of a sale is not a loophole invented at closing; it is the ordinary, statutory consequence of the exemption being a per-individual cap, available to anyone who put the ownership structure in place early enough for each claimant's shares to independently qualify.

The tell

The tell, and the trap, both sit in the same place: this only works if every one of the trust's shares and the spouse's shares independently clears the same qualifying-share tests as the founder's own holdings — the active-business asset composition, and the 24-month ownership clock. A trust or a spouse added to the cap table the month before a sale letter of intent is signed almost certainly fails that clock; a structure built years ahead, and reviewed against the same tests as the founder's own shares, is the version that survives to closing.

Takeaways

  • • The exemption is a deduction from an individual's taxable income capped by the formula in ITA s. 110.6(2)(a) — built on $625,000 of taxable capital gain, per qualifying individual, not per corporation or per sale.
  • • A s. 104(21) designation alone will not carry the exemption — it operates “except as [ss. 3 and 111] apply for the purposes of section 110.6.” It is s. 104(21.2) that deems the beneficiary to have a gain from a QSBC share, and that is what makes the beneficiary's own claim possible.
  • • Multiplying claimants only works if every individual's shares independently clear the same active-business and 24-month tests as the founder's own holdings — and if the gain is an excluded amount for TOSI under ITA s. 120.4(1)(d), which a qualifying QSBC gain in an adult's hands is.
  • • The structure has to be in place years before a sale is contemplated — not assembled once a buyer is under contract.

Sources

  • Income Tax Act, s. 110.6 — marginal note Capital gains deduction — qualified small business corporation shares at s. 110.6(2.1); the cap it applies is the formula in s. 110.6(2)(a), built on $625,000 of taxable capital gain. It is a deduction in computing an individual's taxable income, which is why the ceiling is per person.
  • Income Tax Act, s. 104 — marginal note Designation in respect of taxable capital gains at s. 104(21) — note its express carve-out of s. 110.6 — and marginal note Beneficiaries' taxable capital gain at s. 104(21.2), the provision that actually delivers a QSBC-share gain into the beneficiary's hands.
  • Income Tax Act, s. 120.4 — the excluded amount definition in s. 120.4(1), para. (d) — a taxable capital gain from the disposition of QSBC shares is excluded from split income unless ss. 120.4(4) or (5) would deem it a dividend.
  • Income Tax Act, s. 38 — marginal note Taxable capital gain and allowable capital loss — the one-half inclusion behind the $1,700,000 taxable gain.
  • Treadstone Law — multiplying the capital gains exemption with a family trust — confirms the planning shape: a discretionary trust letting several family members each claim their own exemption, set up years ahead of a sale. It does not cite s. 104(21)/(21.2) or address TOSI beyond a passing reference — the mechanics above come from the Act.
  • Treadstone Law — when a trust distributes capital gains to beneficiaries — covers the same-year payable requirement and the T3 filing that the designation depends on. It does not cover the interaction with the exemption at the beneficiary level.

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