There is no earn-out provision in the Income Tax Act. A contingent payment tied to a business's future performance is taxed by fitting it into general rules that were not written with earn-outs specifically in mind — which is exactly where the planning risk lives.
Key takeaways
Searching the Income Tax Act for a dedicated earn-out rule turns up nothing, in the same way the Act contains no section defined around “carried interest” or “rollover equity” — these are commercial terms, not statutory ones. An earn-out payment received by a vendor is taxed under the Act's general disposition-of-property rules: it is additional proceeds of disposition for the shares or assets sold, recognized as a capital gain (or loss) in the ordinary way, provided the payment genuinely represents deferred purchase price and not something else entirely (see the characterization risk below).
Because an earn-out payment often is not received until well after the taxation year of sale, the practical question is when the related gain has to be reported. ITA s. 40(1)(a)(iii) lets a vendor claim a reserve for the portion of proceeds not yet due, capped at the lesser of a reasonable amount and 1/5 of the gain for each remaining year in a five-year window — a maximum five-year spread in the ordinary case. A ten-year version of the same reserve exists, but only for specific transfers named in s. 40(1.1) through (1.3): qualifying transfers to a child, certain family farm or fishing property, a qualifying intergenerational share transfer, or a disposition to an employee ownership trust. An ordinary arm's-length earn-out to an unrelated corporate buyer does not qualify for the longer window, which is directly relevant to how long an earn-out should reasonably run — see earn-out periods and why longer is riskier.
Only half of a capital gain is taxable — s. 38(a) fixes a taxpayer's taxable capital gain at 1/2 of the capital gain itself. The lifetime capital gains exemption compounds on top of that: ITA s. 110.6(2)(a) and (2.1) set the deduction at $625,000 of taxable capital gain for a disposition of qualified small business corporation shares — a taxable-gain figure, meaning it corresponds to a $1,250,000 gross gain at the 1/2 inclusion rate. That $625,000 figure indexes to inflation for taxation years beginning after 2025; confirm the current year's indexed amount with the CRA before relying on a specific dollar figure.
Where earn-out proceeds are received over several taxation years under the s. 40 reserve, the LCGE deduction is generally available against each year's taxable capital gain as it is reported, up to whatever lifetime exemption room the vendor has left — it is not a one-time claim that has to be used entirely in the year of the original sale. Precisely how a specific vendor's exemption room applies across multiple years of earn-out receipts depends on that vendor's own cumulative gains limit and prior claims, and needs to be modelled individually rather than assumed.
The genuinely open question in earn-out taxation is not the mechanics above but characterization: is a given payment really additional proceeds of disposition for the business, or is it, in substance, compensation for the seller's continued services? This risk is sharpest where earn-out payments are conditioned on the seller remaining employed by, or actively working for, the buyer during the earn-out period — the more a payment looks tied to ongoing personal effort rather than to the business's inherent post-sale performance, the more exposed it is to being recharacterized as income rather than capital gain. The Act has no earn-out-specific test to resolve this either way; it falls to general principles about what the payment is genuinely for, applied to the specific facts and the specific drafting of the agreement. This is a case where the answer depends entirely on how the purchase agreement itself frames the payment, and it is worth getting characterized by a tax professional before the agreement is signed, not after the first instalment lands.
A vendor sells qualified small business corporation shares for $1,600,000: $1,000,000 cash at closing and a $600,000 earn-out paid over the following three years, at $200,000 per year, contingent on revenue targets and structured with no ongoing employment requirement for the vendor.
The total capital gain on the sale is $1,100,000 against a cost base of $500,000. Under the 1/2 inclusion rule, $550,000 of that gain is taxable. The vendor uses the lifetime capital gains exemption to shelter $625,000 of taxable capital gain against the total, well above what this deal generates, but the timing still matters: because $600,000 of the proceeds is not due until later years, the vendor claims the s. 40 reserve on the closing-year return to defer recognizing the corresponding portion of the gain, then reports each year's share of the gain as the $200,000 instalments are actually received — using LCGE room against each year's taxable amount as it comes in, rather than trying to claim it all against the closing-year cash alone.
Because the earn-out here carries no employment condition, the payments stay characterized as deferred proceeds of disposition throughout. Had the agreement instead required the vendor to remain actively employed by the buyer as a condition of each payment, the same $600,000 could have faced a real argument that at least part of it was compensation for services rather than sale proceeds — a materially different tax result the vendor would want resolved before signing, not after the first cheque.
No. There is no earn-out-specific provision. Earn-out proceeds are taxed under the Act's general rules for proceeds of disposition and the capital gains reserve, the same framework that governs any deferred sale proceeds.
Generally yes, against each year's taxable capital gain as it is reported under the reserve mechanism, subject to the vendor's remaining lifetime exemption room. It is not necessarily a single claim that has to be made entirely in the year of the original sale.
Yes, if the substance of the payment looks more like compensation for continued services than deferred purchase price — particularly where payment is conditioned on the vendor staying employed by the buyer. This is a genuine characterization risk that should be addressed in how the agreement is drafted, not assumed away.
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