Impact of tariffs on Canadian businesses
Prime Minister Mark Carney announces support for Canada’s lumber industry citing heavy reliance on US exports and vulnerability to trade policies.
29 Oct 2026 6 min read

The 2026 Ontario Economic Outlook and Fiscal Review: A Plan to Protect Ontario doesn’t introduce major changes to personal and business tax measures. However, it confirms Ontario’s plans to align with federal changes to the scientific research and experimental development (SR&ED) program and recent proposals for immediate write-offs and accelerated deductions for eligible depreciable property. The province will also proceed with changes to the provincial portion of the HST rebates available on new homes, previously announced in their 2026 budget. In addition, Ontario is also introducing changes to its beneficial ownership registry, which will increase reporting requirements for privately held corporations.
The ON FES 2026 estimates a $16.9 billion deficit for the 2026-27 fiscal year, a significant increase from the $13.8 billion deficit projected in the 2026 budget, citing the ongoing trade and geopolitical uncertainties.
Estimated surplus (deficits)
| 2026-27 | 2027-28 | 2028-29 | |
|---|---|---|---|
|
Original estimate (Budget 2026) |
($13.8B) |
($6.1B) |
$0.6B |
|
Revised estimate (Fiscal review 2026) |
($16.9B) |
($12.7B) |
($6.7B) |
The government expects to return to a balanced budget in the 2029–30 fiscal year.
Ontario competitiveness tax cut
The Statement parallels the proposed federal Productivity Mega Deduction to provide 100% immediate write-off for the cost of most depreciable property purchased on or after September 15, 2026, subject to certain exceptions. These exceptions include a building, an improvement to a building, most intangible assets, most vehicles (used vehicles or any vehicles assembled outside of Canada), natural gas pipelines and related equipment, qualified liquefaction equipment, timber limits and timber rights, and mineral mines and mineral rights.
In addition, the government also confirms their plan to harmonize the proposed federal immediate expensing for M&P buildings, temporary immediate expensing for eligible zero-emission vehicles, and additional allowances for liquefaction equipment used in liquefied natural gas facilities.
This measure will have the same effective date as the federal measures once the federal legislation is enacted.
Broadening availability to research and development tax credits
ON FES 2026 restores eligibility for certain capital expenditures under the Ontario research and development tax credit and Ontario innovation tax credit. This measure allows eligible businesses to claim qualifying capital expenditures, such as software and hardware testing tools, high-performance computing, prototyping equipment, and certain property and lease costs, consistent with recent changes to the federal SR&ED program. This will apply to eligible property acquired on or after December 16, 2024.
Temporarily enhance HST relief for new homes
Ontario will provide the following temporary harmonized sales tax (HST) relief measures, up to $130,000 for eligible buyers of new or substantially renovated homes, which were previously announced:
Elimination of new housing rebate and new residential rental property rebate
Ontario will eliminate the new housing rebate and new residential property rebates on new purchases and transactions that begin on or after April 1, 2027, which will phase out at the same period as the enhanced versions of the rebates.
The new housing rebate and the new residential rental property rebate will continue to apply if the relevant agreement of purchase and sale is entered into on or before March 31, 2027, or the construction or substantial renovation of the property begins on or before March 31, 2027. In addition, the HST on the new property must become payable no later than December 31, 2035.
For assignment sales, the new housing rebate and new residential rental property rebate will only be available if both the original agreement of purchase and sale and the assignment agreement were entered into on or before March 31, 2027, and all other eligibility criteria of these rebates are met.
Ontario proposes amendments to existing programs and tax measures, including:
Have questions? Let’s talk. Contact your local advisor or reach out to us here.
Visit our Budget 2026 hub to learn more about all federal and provincial budgets.
Disclaimer
The information contained herein is general in nature and is based on proposals that are subject to change. It is not, and should not be construed as, accounting, legal, or tax advice or an opinion provided by Doane Grant Thornton LLP to the reader. This material may not be applicable to, or suitable for, specific circumstances or needs and may require consideration of other factors not described herein.
Prime Minister Mark Carney announces support for Canada’s lumber industry citing heavy reliance on US exports and vulnerability to trade policies.
Eligible manufacturers in Ontario could receive up to $3 million per year on certain purchases of manufacturing and processing property, under the Ontario made manufacturing investment tax credit.
Finance Minister Peter Bethlenfalvy tabled Ontario's budget (ON Budget 2025) for the 2025-26 fiscal year on May 15, 2025.
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