EventDocument
Productivity Mega Deduction announced at the Canada Investment Summit: permanent immediate expensing covering more than 65% of business assets
Covers assets including mining property and pipelines acquired on or after 2026-09-15 (some regulated gas-distribution pipelines are excluded). Canada's marginal effective tax rate on new business investment would fall from about 13% to 6.4%, against 16.9% in the United States. Cost: C$36 billion over five years. Issued as draft legislative proposals; not yet law.
- Date
- Kind
- Legislation
- Where
- Canada
- Evidence
- Document: An official document: a bill, a filing, an agreement text. How evidence is weighed
- Who
- Government of Canada (acted); Mark Carney (spoke); Department of Finance Canada (acted)
Sources
- Osler, “Canadian prime minister announces 'Productivity Mega Deduction'” (external site), . source record
- PwC Canada, “Tax Insights: Federal tax measures to boost investments in Canada: permanent immediate expensing and faster rulings” (external site), . source record
- Prime Minister's Office, “Prime Minister Carney introduces new Productivity Mega Deduction” (external site), . source record
- Department of Finance Canada, “Government of Canada introduces new Productivity Mega Deduction to boost Canada's advantage as the most competitive G7 country for new business investment” (external site), . source record
- Department of Finance Canada, “Draft Legislative Proposals Relating to the Income Tax Act and Income Tax Regulations (Productivity Mega Deduction)” (external site), . source record
- Canadian Shield Institute, “The 'Productivity Mega Deduction' Really is Huge” (external site), . source record
- Business Council of Alberta, “BCA Welcomes Productivity Mega Deduction” (external site), . source record
- Gowling WLG, “Canada's "Productivity Mega Deduction": Immediate Expensing” (external site), . source record
- TD Economics, “Productivity Mega Deduction = Mega Growth?” (external site), . source record
- Blakes, “Canada Announces Productivity Mega Deduction” (external site), . source record
- DLA Piper, “Canada's Productivity Mega Deduction: what businesses need to know” (external site), . source record
- Virtus Group, “Productivity Mega Deduction” (external site), . source record
- Bennett Jones, “From Super to Mega: Canada Proposes New "Productivity Mega Deduction" to Spur Investment” (external site), . source record
- McMillan, “Digging Deeper and Deducting Faster: What Canada's Productivity Mega Deduction Means for Canadian Mineral Property Development” (external site), . source record
- McCarthy Tétrault, “Productivity Mega Deduction: Key tax measures announced at the Canada Investment Summit” (external site), . source record
- The Globe and Mail, “Opinion: Ottawa gets it on tax policy, gamechanger 'mega deduction' shows” (external site), . paywalled source record
Quotes
“fully write off the cost of an investment in the year that it becomes available for use”
From Department of Finance Canada: Government of Canada introduces new Productivity Mega Deduction to boost Canada's advantage as the most competitive G7 country for new business investment, Backgrounder, para. 1
“less than half the rate in the United States”
From Prime Minister's Office: The first Canada Investment Summit unleashes nearly $500 billion of new investment in Canada, paragraph beginning "To build on this momentum"
“more tax competitive than the U.S. across all major sectors”
From Department of Finance Canada: Government of Canada introduces new Productivity Mega Deduction to boost Canada's advantage as the most competitive G7 country for new business investment, Backgrounder, section 'Boosting Investment, Productivity and Competitiveness', para. 11
“a fundamental shift in the economics of mine development in Canada”
“meaningful, but not game changing in isolation”
From TD Economics: Productivity Mega Deduction = Mega Growth?, para. 6
Laws and agreements
- Productivity Mega Deduction: this event is its “Announced” stage
- Productivity Super-Deduction (Budget 2025) (Budget 2025 CCA measures)
Claims that rest on this event
- What Canada pays is set against what it gains: the capital, a lower tax take, the permitting and First Nations fights, a build-out that is almost all raw commodities, and the trade war itself. Counted together against 2024, Canada comes out ahead in 2034 unless about 57% of today's tariff damage is still in place, but the decade as a whole leaves it behind; how much it keeps after that depends on how long the tariffs last and whether it uses its new leverage to capture more value.
Canada lowers its own tax take on new investment: a cost to set against the win.
- US trade pressure since 2025 gave Ottawa the political cover to clear permitting and political blockages, producing permanent laws (fast-track permitting and investment tax cuts) that unlock a second wave of output.
Tax half of the lock-in.
- The Productivity Mega Deduction would cut Canada's overall effective tax rate on new business investment from about 13% to 6.4% (US: 16.9%). It names mining property, pipelines and LNG, dropped the low-carbon condition for LNG, and applies to assets bought from September 15, 2026, though it is still a draft, not law. The tilt toward resources is clearest here, not in C-39.
The draft proposal itself.
- In the foresight thought experiment, the deal-timing test ('No deal before the law') works in one direction only. A deal or easing within 120 days after the later of two dates, C-39 becoming law and the Mega Deduction becoming law, would support 'foreseen and wanted'. Continued pressure that still spares raw goods would not count against it; only sustained escalation that damages the flow south would.
Other half of the anchor (draft).
How it bears on the outcome
| Explanation | Fit | Why |
|---|---|---|
| O0 No meaningful speed-up | Against weak | Permanent full expensing for mining property and pipelines, at a cost of $36 billion, is a policy push for faster investment; it is still draft legislation. |
| O1 Faster, but the extra output goes mostly elsewhere | Fits weak | A general tax incentive fits any speed-up reading equally and says nothing about destination. |
| O2 Faster, and more volume reaches the US (this level or higher) | Fits weak | A general tax incentive fits any speed-up reading equally and says nothing about destination. |
| O3 Locked-in preferential terms for the US | Fits weak | A general tax incentive fits any speed-up reading equally; it gives no preferential terms to the US. |
Logged against predictions
- P1: "No deal before the law" (a test of the foresight thought experiment) (logged 15 September 2026, logged only)