Ontario links proposed investment write-offs to federal legislation

Ontario's proposal remains conditional

Ontario's 29 October Fall Economic Statement proposes broader capital write-offs aligned with the federal Productivity Mega Deduction. The province says the measures would generally apply to eligible assets acquired from 15 September 2026, but would take effect only after the corresponding federal legislation is enacted. The 5 November federal budget confirms an intention to proceed with the September proposals; it does not state that they are already law.^[1][2]

Different asset categories have different treatment

Ontario proposes permanent 100% immediate write-offs for most eligible depreciable property, including specified manufacturing and processing machinery, clean-technology property, zero-emission vehicles, greenhouse buildings and productivity-enhancing assets. It describes separate 100% treatment for manufacturing and processing buildings, with a phase-out after 2029, and an increase from 4% to 10% for eligible purpose-built rental housing completed before 1 January 2036.^[1]

Exclusions require asset classification

The annex also proposes first-year deductions of up to three times the regular amount for most other depreciable assets, with a phase-out after 2029. Its general immediate-expensing category excludes certain buildings, passenger and motor vehicles not separately specified, intangible property, regulated natural-gas distribution pipelines and property depreciated under Schedules V and VI of the federal Income Tax Regulations. The treatment of a particular investment therefore depends on its class and the final legislation.^[1]

No current entitlement

Multinational groups with Ontario taxable income should map planned acquisitions, record acquisition and available-for-use dates and classify the assets for Canadian capital-cost-allowance purposes. The proposal creates no new filing deadline and does not support claiming a new deduction under current law. Groups should continue to apply enacted rules until federal legislation and Ontario's implementing position are verified, then test the final commencement and transition provisions against their facts.^[1][2]