Selling your business: the tests that matter years before the sale

Current to September 11, 2026.

The exemption is claimed at the end. Whether it is available is decided well before that.

A Canadian-controlled private corporation is, broadly, a private company resident in Canada and not controlled from outside it. Where shares of one qualify, an individual can shelter a substantial capital gain on their sale using the lifetime capital gains exemption. It is one of the most valuable provisions available to a private business owner, and it is also one of the easiest to fail on a technicality.

The conditions that catch people

The tests operate over time, not at a moment. Broadly, three things must hold. Substantially all of the corporation’s assets must be used in an active business in Canada at the time of sale. A majority of assets must have been so used throughout the preceding two years. And the shares must generally have been held by you or a related person over that period.

The common failure is the asset test. A corporation that has accumulated cash, a portfolio, or a property no longer used in the business can fail it while trading perfectly well. Money left in the company for good reasons is exactly what causes this — see salary or dividends.

Why the timing matters

Because one of the tests looks back two years, a corporation that fails today cannot be fixed today. Cleaning up the balance sheet — often called purification — takes time to have effect, and the steps involved have their own tax consequences that need to be sequenced properly.

Structure matters too. Whether the shares are held personally, through a holding company, or through a trust affects who can claim and how much. Those decisions are cheap to make at incorporation and expensive to unwind later.

The practical point

If a sale is a possibility within the next few years, the qualification question is worth answering now while there is still time to act on the answer. If a purchaser is already at the table, the answer is what it is. See tax and business.