If you run a business in Canada and you bought equipment this year, or plan to before December 31, a federal proposal announced on September 15 could change your 2026 tax picture in a big way. It is called the Productivity Mega Deduction, and it is worth understanding now, because the part you can control, timing, happens before year-end.
One important note up front: this is a proposal, not law. The Department of Finance released draft legislation and is using “proposes to implement” language. It could change before it is enacted. Everything below reflects the proposal as announced.
What it is
In plain terms: the government wants to let businesses write off the full cost of eligible equipment in the year it goes into service, permanently. Buy a $50,000 machine, put it to work in 2026, and deduct the full $50,000 on your 2026 return instead of spreading it over several years through capital cost allowance.
Ottawa frames it as making Canada the most competitive G7 country for new business investment. The official estimate is $36 billion in federal support over five years, cutting Canada’s marginal effective tax rate on new investment from about 13 percent to 6.4 percent.
Who it applies to
All businesses with business or property income, corporations and unincorporated alike. There are no size thresholds or sector carve-outs in the announcement. There are, however, property exclusions: buildings (CCA Classes 1 and 3), franchises, licences and goodwill (Classes 14 and 14.1), regulated pipelines (Class 51), certain vehicles, and a few specialized schedules are out. Manufacturing and processing buildings keep the temporary immediate expensing announced in Budget 2025.
Two rules matter for small businesses:
- Loss restriction. Individuals and partnerships with individual members cannot use the deduction to create or increase a loss. Corporations do not face this restriction.
- Used equipment counts, with conditions. Previously owned property only qualifies if neither you nor a non-arm’s-length person owned it before, and it was not transferred to you on a tax-deferred rollover.
Key dates
- Property acquired on or after September 15, 2026 is eligible.
- The deduction is claimed in the year the property becomes available for use. For a December 31 year-end, equipment bought after September 15 and in service by December 31 is deductible on the 2026 return, if the measure is enacted as proposed.
- There is no phase-in and no announced expiry. The proposal makes immediate expensing permanent.
What this means for your year-end planning
Three practical moves to consider in Q4:
- Review planned purchases. If you were going to buy equipment in early 2027 anyway, pulling the purchase into December 2026 could put the full deduction on this year’s return. Run the cash flow first; a deduction is only worth it if the business can afford the outlay.
- Mind the loss limit. Sole proprietors: if 2026 is a lean year, the deduction cannot push you into a loss. Corporations have more room here.
- Do not forget the rest of the return. The deduction is one line in a bigger picture: instalment requirements, shareholder loans, and salary-versus-dividend decisions all interact with it.
And a word of caution: do not buy equipment purely for the tax break. A deduction that saves you 25 cents on the dollar is still 75 cents out of pocket. The Mega Deduction makes good purchases better; it does not make bad purchases good.
The bigger 2026 picture
The Mega Deduction arrived alongside two other confirmed measures worth knowing: the proposed capital gains inclusion rate increase was cancelled (the rate stays at 50 percent), and the Lifetime Capital Gains Exemption was raised to $1.275 million for eligible entrepreneurs. These are separate from the Mega Deduction and do not interact with it, but they all land on the same 2026 planning desk.
What to do next
Year-end is ten weeks away. If your business has bought equipment since mid-September or is thinking about it, now is the time to model the effect on your 2026 return. Our Q4 Year-End Sprint packages the review, the purchase-timing plan, and an incentive screening into one fixed-fee engagement, delivered while there is still time to act.
Sources: Department of Finance backgrounder, September 15, 2026; ESDC news release, September 29, 2026
