It depends entirely on the province. BC excludes the gift but shares the growth; Ontario excludes the gift and its traceable growth — the opposite rule, on the same facts.
Short answer
It depends on the province, and the two largest family-law regimes in Canada answer differently on the same facts. British Columbia excludes the value of a gifted shareholding at the time it was received, but treats everything the shares grew by afterward as shared family property. Ontario excludes both the gift and its traceable growth, as long as the shares — or what they were exchanged for — can still be traced back to the original gift and were not mixed with family assets.
British Columbia's Family Law Act excludes a gift outright but not what it earns afterward. Section 85(1) provides that “property acquired by a spouse before the relationship between the spouses began”, and inheritances and gifts, are excluded from family property — but section 84(2)(g) pulls the growth back in: family property specifically includes “the amount by which the value of excluded property has increased since the later of the date” the relationship began or the property was acquired. The baseline is protected in BC; the growth is not.
Ontario's Family Law Act runs the opposite way. “Net family property” “means the value of all the property, except property described in subsection (2), that a spouse owns on the valuation date” — and subsection (2) excludes “property, other than a matrimonial home, that was acquired by gift or inheritance from a third person after the date of the marriage”, along with “property, other than a matrimonial home, into which property referred to in paragraphs 1 to 4 can be traced”. Traced growth on a gift stays excluded in Ontario, provided it was kept separate enough to trace.
The BC/Ontario split is the headline, but both rules can fail on the same fact: commingling. If gifted shares are exchanged, pledged, or their proceeds mixed into jointly held property, the tracing an Ontario exclusion depends on becomes hard or impossible to prove, and the burden of proving the exclusion sits with the spouse claiming it in both provinces. A marriage contract made before or during the relationship can override either default rule entirely — the one document that settles the question regardless of which province a couple later lives in.
In the Case Files library, a successor's separation that reached the gifted shares is the direct example: 40% of a company gifted to a son during his marriage, with the outcome nine years later turning entirely on which province the couple lived in. the valuation the family used to move shares to the next generation was not the one the CRA used shows the same family-transfer mechanic from the tax side rather than the family-law side — what happens when the value used for a gift and the value CRA accepts do not match.
A 30-minute call is enough to tell you whether AI pays for itself here.
Canadian small-business transaction data is not published anywhere, so most valuations in this country quote an American benchmark. The Deavo–Treadstone Acquisition Index is a daily record of Canadian listings built to replace that: asking-price distributions by province and city are published now, and days on market, departure rates and asking-to-sale spreads follow as the series lengthens. Leave an email and we will tell you as each measure lands.
No pitch, no listings. One email when the first report lands.
