President Trump signed three proclamations on July 20 imposing 50 percent tariffs under Section 338 of the Tariff Act of 1930 on a broad list of Canadian goods, including wine, whisky, cement and hockey sticks. The tariffs take effect August 19, thirty days after signing, and cover roughly $28 billion of Canadian exports, about 5 percent of what Canada ships to the United States annually. Energy, potash, fish and critical minerals are excluded.
For most Canadians this is a trade story. For a CCPC owner whose business sits inside the affected list, wine and spirits producers, cement and building materials manufacturers, sporting goods makers, August 19 is a specific date on which landed cost to US customers rises 50 percent overnight. That is a planning deadline, not background noise.
The 30-Day Clock on Active Business Income
A CCPC's small business deduction applies to the first $500,000 of active business income, and that limit grinds down by five dollars for every dollar of adjusted aggregate investment income above $50,000. A tariff-driven drop in active business income does not touch the AAII side of that formula directly, but it changes the number advisors should be projecting forward. A corporation that expected to earn $600,000 in active income this year and now faces a US-side margin hit needs that projection rerun before August 19, not after the first tariffed shipment goes out.
Owners who have been building retained earnings inside the corporation to fund a future prescribed rate loan or an income-splitting dividend to a lower-income spouse should revisit those projections now. A business generating less predictable income has less basis for a lender, or the CRA, to treat a loan or dividend stream as sustainable.
The LCGE and CDA Math Before August 19
The capital gains inclusion rate stays at 50 percent for 2026. The 2024 proposal to raise it to two thirds was cancelled in Budget 2025 and is not in force. The Lifetime Capital Gains Exemption for 2026 is $1,275,000 under section 110.6, available on qualifying small business corporation shares to an owner who elects it on their T1.
For an owner in an affected sector weighing a sale before margin compression sets in, the mechanics matter. The taxable half of a corporate capital gain is subject to corporate tax, with a refundable portion for investment income, while the non-taxable half flows to the capital dividend account and can be paid to shareholders tax free. A sale that closes before August 19 locks in a valuation that has not yet absorbed the tariff impact. A sale that closes after may value the business lower, which cuts both the proceeds and, incidentally, the taxable gain.
Canada's broader trade position with the United States puts the new measures in scale, and shows how narrow a slice of the relationship they actually cover.
The alcohol export and wine figures are shown at a minimum bar width for legibility given their scale relative to the trade surplus; exact values are labelled on each bar. Source: Global Affairs Canada, Trade Commissioner Service, Wine Institute.
Revisiting Prescribed Rate Loans for Exposed Families
Families using a prescribed rate loan structure to split investment income with a spouse or a family trust depend on the lending corporation continuing to generate the retained earnings that fund it. If the lending entity is a CCPC with exposure to the newly tariffed categories, the income-splitting projection built six months ago may no longer hold. Trust structures holding shares in an affected operating company face the same question at the next distribution decision.
None of this requires an immediate transaction. It requires an updated projection, run against August 19 rather than against the calendar year end, for any client whose corporation touches the tariffed list.