A business that buys an expensive piece of equipment normally does not deduct the entire cost from taxable income all at once.

Instead, the cost is generally claimed over time through Canada’s capital cost allowance system.

A new federal tax proposal would change that treatment for a much wider range of business investment.

On September 15, 2026, the Department of Finance released details of the proposed Productivity Mega Deduction, which would permanently allow immediate expensing for most qualifying depreciable property acquired on or after that date.

The proposal is significant, but there is an important word in that sentence: proposed. Businesses should distinguish the announced policy and draft legislative proposals from final enacted tax law.

What does immediate expensing mean?

Under the regular capital cost allowance system, businesses generally deduct part of the cost of depreciable property each year according to the property’s CCA class.

Immediate expensing changes the timing.

Rather than spreading deductions over several years, qualifying taxpayers could deduct the full eligible cost in the year the asset becomes available for use.

The Department of Finance says the proposed measure would expand immediate expensing to roughly two-thirds of capital investment, compared with a much narrower group of investments covered by earlier accelerated measures.

Which purchases could qualify?

The government’s September 2026 technical backgrounder says most depreciable capital property subject to Canada’s CCA rules could qualify if acquired on or after September 15, 2026.

That could make the measure relevant to businesses investing in machinery, equipment, technology and other qualifying capital assets.

But it is not an unlimited deduction for every business purchase.

Several types of property are specifically excluded.

Buildings are one of the important exclusions

Buildings in CCA Classes 1 and 3, including additions to those buildings, generally would not qualify for the new permanent immediate-expensing measure.

There are also exclusions for Classes 14 and 14.1, which can include items such as certain licences, franchises and goodwill.

Class 51 property, including certain regulated natural gas distribution pipelines, is also excluded, along with certain vehicles and property covered by other specified depreciation schedules.

Manufacturing and processing buildings have separate temporary treatment announced previously rather than being included directly in the new permanent deduction.

Why the timing of a tax deduction matters

Imagine two businesses buy the same $100,000 qualifying asset.

If one must deduct that cost gradually over several years while the other can deduct the full eligible amount immediately, the total long-term tax treatment may not be the only difference.

Cash flow changes too.

A larger deduction earlier can reduce taxable income sooner, leaving more cash available during the period when the business has just spent money on equipment.

That is the economic logic behind accelerated depreciation and immediate-expensing policies.

It does not mean the government is paying the full cost of the asset. It changes when the tax deduction can be claimed.

The government estimates a $36 billion five-year fiscal cost

The Department of Finance estimates that expanding the measure would have an incremental federal fiscal cost of about $36 billion over five years beginning in 2026-27.

The government also estimates that Canada’s marginal effective tax rate on new business investment could fall from 13.0% after previously announced measures to 6.4% after the proposed deduction.

Those figures are federal government estimates based on its modelling, not guaranteed economic outcomes.

The same applies to the government’s longer-term estimates for additional output and employment. They describe expected effects under the modelling assumptions used by the Department of Finance.

This policy is aimed at business investment, not ordinary household purchases

The name can make the measure sound like a new deduction available broadly to individual taxpayers.

It is not a personal tax deduction for buying a laptop, car or appliance for private use.

The rules concern qualifying depreciable business property and expenses within the Canadian tax system.

For individuals who operate businesses or participate in certain partnerships, additional restrictions would apply to prevent immediate expensing from being used simply to create or increase a tax loss.

Used assets have additional conditions

Used property is not automatically excluded, but Finance Canada describes specific restrictions.

For qualifying used property, neither the taxpayer nor a non-arm’s-length person can have previously owned the asset, and the property cannot have been transferred to the taxpayer through certain tax-deferred rollover transactions.

That matters for businesses considering buying equipment from related companies or restructuring assets between entities.

LNG receives separate treatment

The proposal also contains provisions relevant to liquefied natural gas facilities.

Class 47 liquefaction equipment used in LNG facilities could receive an additional allowance that effectively brings the CCA rate for qualifying property to 100%, subject to specified rules.

That connects the tax proposal directly with Canada’s energy-investment landscape.

Maple Curiosity has previously looked at Alberta natural gas and LNG development in 2026, where infrastructure and export capacity play a major role in whether Western Canadian gas can reach overseas markets.

Why productivity keeps appearing in Canadian economic policy

Canada’s productivity challenge has become a recurring issue in economic discussions because productivity influences how much economic output can be produced from labour and capital.

Investment in newer machinery, software, data infrastructure and technology can raise the amount a worker or business can produce.

The new deduction is designed around that connection: make investment less costly on an after-tax basis and businesses may have a stronger incentive to invest sooner.

Whether the proposal ultimately produces the scale of investment forecast by the government will depend on business demand, financing conditions, trade conditions and the final legislation.

Maple Curiosity’s Canada Economic Outlook 2026–2027 provides broader context on growth, employment, inflation and household conditions surrounding these investment decisions.

Trade uncertainty still matters

A tax incentive cannot remove every reason a company may delay an investment.

Businesses also consider customer demand, borrowing costs, supply chains and access to export markets.

Canada is currently dealing with significant trade uncertainty with the United States, which can affect investment decisions in manufacturing, commodities and other export-oriented sectors.

For background on those pressures, Maple Curiosity’s Canada–U.S. Trade Friction in 2026 explains how tariffs and supply-chain changes interact with the Canadian economy.

What businesses should watch next

The biggest issue now is implementation.

The September announcement was accompanied by draft legislative proposals, but businesses making large capital decisions need to pay attention to the final enacted rules, effective dates, asset classifications and any subsequent CRA guidance.

A headline saying businesses can “write off everything immediately” would be inaccurate.

The proposal is broad, but important exclusions remain, and the tax result depends on the type of property and taxpayer.

The most useful takeaway is therefore narrower: Canada is proposing a major permanent expansion of immediate expensing for qualifying business investment acquired from September 15, 2026.

Exactly how valuable that becomes for an individual business will depend on what it buys, when the property becomes available for use and how the final legislation applies to that asset.