Lifetime Capital Gains Exemption on a VC-Backed Startup Exit

Can I use the lifetime capital gains exemption when our VC-backed startup is sold?

You can if you are an individual resident in Canada for the year and your shares are qualified small business corporation shares at the moment of sale (Income Tax Act s. 110.6(1) and (2.1)). A venture round does not end the exemption by itself, but it often breaks one of the three tests below.

The definitions are in s. 110.6(1) and s. 248(1); the CRA's 90% reading is in its capital gains guide.

A startup exit is rarely simple: the tests look back two years, depend on fair market values nobody recorded at the time, and are usually lost by an event (a round, a flip, a move) that cannot be undone after closing. Gather the cap table and every share issuance, balance sheets for the 24 months before the sale, the investor rights agreement and any option, warrant or convertible terms, and your residence dates.

How much is the lifetime capital gains exemption, and what happened to the Canadian Entrepreneurs' Incentive?

The lifetime limit is $1.275 million of capital gains on qualifying property for dispositions this year (Finance Canada). The Act states it as a deduction from the taxable half (50%) of the gain, indexed to inflation each year starting with this tax year (s. 110.6(2); s. 117.1(2)(c)). The limit is lifetime and shared with qualified farm and fishing property, so any amount you claimed before reduces what is left.

The Canadian Entrepreneurs' Incentive, a separate lower inclusion rate announced alongside the exemption increase, will not happen. Finance Canada's tax expenditure report says the government confirmed in its 2025 budget that it would not proceed with it. The CRA's line 25400 page may still describe the increased limit as "proposed"; the increase is now in the Act itself.

What can shrink the exemption below the limit, such as past investment losses, is covered in selling your business.

Our raised cash sits in the bank: does it fail the asset tests, and can it be fixed before signing?

Cash fails the tests only if it is not an asset used principally in the active business. Whether a startup's round proceeds count as working capital or as surplus investment is a question of fact; the Act gives no safe harbour for raised money. A company holding most of a large round in term deposits or Treasury bills, well beyond its planned spending, is at real risk of failing the 90% test at the sale, and over a long period the 50% test as well.

Both tests use fair market value, including goodwill and technology that may not be on the balance sheet, so a high sale price can raise the active share. Track the ratio at each month-end, not only at year-end.

The 90% test is measured at the moment of sale, so the company can sometimes fix it before closing by spending, paying down debt or moving surplus out ("purification"). Purification has its own tax costs and must be done before the sale; the steps are in selling your business. The 50% test looks back 24 months and cannot be repaired after the fact.

Did our investors end CCPC status, and what does that do to the exemption?

Your shares cannot qualify if the company is not a Canadian-controlled private corporation at the sale. A company stops being a CCPC if non-residents or public corporations control it, or if all shares they own, counted together as if one person held them, would give control (s. 125(7)). Several US funds that together hold more than half the votes can end CCPC status even if no single fund controls.

• Options, warrants and conversion rights count. A right to acquire shares, now or in the future, is treated as if the shares were already owned when testing control (s. 251(5)(b)).
• The buyer's purchase agreement does not. A right under the share purchase agreement for the sale itself is ignored in deciding whether the company is a CCPC or small business corporation (s. 110.6(14)(b)), so signing with a foreign buyer does not by itself end status for the exemption before closing.

Once status is lost, it cannot be restored for the past 24 months. Founders sometimes crystallize the exemption while the company is still a CCPC, before a foreign-led round is signed or closes; that choice and its minimum-tax cost are in losing CCPC status to foreign investors.

Have my shares been held long enough, including newly issued shares and shares from options?

Shares the company issues to you are treated as if an unrelated person owned them just before issue, so your own 24 months start on the issue date (s. 110.6(14)(f)). That catches founder shares issued close to the sale, top-up grants and shares received on exercising options.

When you own identical shares bought at different times, the Act treats the oldest as sold first for this test (s. 110.6(14)(a)). A sale before the newest block reaches 24 months may still qualify for the older block.

Shares from employee stock options carry a second tax: the option benefit (value at exercise less what you paid) is employment income, not a capital gain the exemption can cover (s. 7(1)(a)). For options from a CCPC to an arm's length employee, that income is usually taxed in the year you sell (s. 7(1.1)); only the gain above the value at exercise can qualify.

I'm moving to the US around the sale: do I still count as resident in Canada for the year?

The deduction requires residence in Canada throughout the year, but a part-year resident is treated as resident all year if they were resident at some point in the year and throughout either the year before or the year after (s. 110.6(5)). A founder who lived in Canada all of last year and leaves mid-year keeps access to the exemption for that year.

Leaving Canada has its own consequence: you are generally treated as selling most property, including private company shares, at fair market value just before you leave (s. 128.1(4)(b)). Whether the exemption covers that deemed gain depends on the shares qualifying at that moment. The calculation and filings are in leaving Canada; timing a move around an exit is a cross-border question for moving from Canada to the US.

How do I claim the lifetime capital gains exemption on my return?

Report the sale on Schedule 3, work out the deduction on Form T657, and claim it on line 25400 of your return for the year of sale (CRA line 25400; T4037). If you had investment income or expenses in past years, Form T936 is also needed.

• Minimum tax. For alternative minimum tax, the gain sheltered by the exemption is still partly counted, a net 30% of it (s. 127.52), so a large exempt gain can produce minimum tax in the year of sale (Form T691).
• File on time. The deduction can be denied for the gain if you knowingly or through gross negligence fail to file within 1 year after the filing due date or fail to report the gain (s. 110.6(6)).
• Quebec residents also claim on the Quebec return with Form TP-726.7-V and send copies of the federal documents, including T657, by the later of 30 days after the federal claim and the return-filing deadline for that year; late documents cost $25 a day, up to $2,500 (Revenu Québec).

Keep the evidence for each test: valuations or month-end balance sheets, the share register and shareholder residence records. The CRA can ask for them years later.

What if a holding company holds my shares, or we flipped to a Delaware parent?

Only an individual, not a corporation or trust, claims the exemption. A personal (family) trust that sells qualifying shares can designate the gain to beneficiaries resident in Canada, who claim it themselves (s. 104(21.2)). If your holding company owns the startup shares and sells them, the holding company has no exemption; your shares of the holding company can qualify only if it meets the tests through connected company shares, which is harder. See holding startup shares through a holding company.

Shares of a Delaware parent cannot be qualified small business corporation shares, because a CCPC must be a Canadian corporation (s. 125(7)). How exchangeable shares and crystallizing before a flip work is in moving a Canadian startup under a Delaware parent; founder shares of a US company are in selling US startup shares as a Canadian founder.

Example

These examples use Canadian dollars and round, illustrative numbers.

Large raise in Treasury bills

A buyer pays C$40 million for a startup; a founder owning 30% receives C$12 million for shares that cost almost nothing. If the shares qualify, C$1.275 million of the C$12 million gain is exempt and the rest is taxed as an ordinary capital gain. But the company holds C$15 million of its last round in Treasury bills; with little debt, that is about a third of its asset value. Before signing, the founder needs to know whether that cash is working capital the business uses or surplus, because the at-sale test needs about 90% active assets.

US fund controls after the Series B

After the Series B, a US fund holds 55% of the votes. The company had stopped being a CCPC by the time that round closed, so the founders' shares are not qualified small business corporation shares at the later sale, and no exemption is available on the sale. Only an exemption crystallized while the company was still a CCPC, which may mean before the round was signed, could still help.

Founder moves to San Francisco in March

• Last year: the founder lives in Canada all year.
• Sale year, March: she moves to San Francisco. Because she was resident all of the prior year, she is treated as resident throughout the sale year for the exemption. Leaving Canada triggers a deemed sale of her shares at fair market value; if the shares qualify then, the exemption can shelter up to C$1.275 million of that deemed gain.
• Sale year, after the move: the company is sold. How each country taxes the gain after her departure is a cross-border question.

Different for you?

• You need to choose shares or assets, purify the company, or know what reduces your exemption: see selling your business.
• A foreign-led round is about to close: see losing CCPC status to foreign investors before signing.
• Your shares are in a US company: see selling US startup shares as a Canadian founder.
• The company is flipping under a Delaware parent: see moving a Canadian startup under a Delaware parent.
• A holding company owns your shares, or you are deciding whether to use one: see holding startup shares through a holding company.
• You are leaving Canada before or after the sale: see leaving Canada and get cross-border tax help.
• Your shares may not meet a test, or the sale is large enough for minimum tax: get individual tax help before signing.