Federal Gas Tax Cut Extended to Jan 31, 2027: What It Means

» Quick Answer

» What just changed at the pump

Most Canadians expected fuel prices to jump on Labour Day, September 8, 2026. They did not.

On September 2, 2026, the Honourable François-Philippe Champagne, Minister of Finance and National Revenue, announced that the federal fuel excise tax will stay suspended through January 31, 2027. After that, the rate returns at half the regular amount for two months before going back to full rates on April 1, 2027. Our earlier coverage of the Labour Day expiry is now superseded by this extension.

For households, that is roughly ten cents per litre in continued savings on gasoline. But the extension also creates a small planning problem: fuel expenses claimed on your 2026 and 2027 tax returns will look different than they did before. Here is what to do about it.

» Pick your path: how the extension affects you

» Individual driver or household

Confirm the rate is still zero cents per litre through January 31, 2027, then build a small buffer into your monthly budget for the February 1 increase and the further step to full rates on April 1, 2027. Modest for most drivers, but worth planning around alongside other winter costs.

» Sole proprietor filing a T2125

A T2125 is the CRA form self-employed Canadians use to report business income and expenses. Track fuel receipts carefully during the suspension window. Lower per-litre costs mean lower deductible vehicle expenses on line 9281 of the T2125, and typically lower harmonized sales tax (HST) input tax credits. Rebase your 2026 and 2027 fuel expense projections against the three rate windows.

» Incorporated small business filing a T2

Fleet operators and delivery businesses should model cash flow through February and March 2027, when the fifty-percent phase-in applies, and into April 2027, when full rates return. If fuel is a passthrough cost in your client contracts, update the contract language now rather than during the transition.

» The new rate schedule through April 1, 2027

The federal fuel excise tax was originally set at ten cents per litre for gasoline and unleaded aviation gasoline, eleven cents per litre for leaded aviation gasoline, and four cents per litre for diesel fuel and aviation fuel. Those rates are set under the Excise Tax Act. The suspension has held all of them at zero since April 20, 2026, and the September 2 announcement extends the suspension through January 31, 2027.

Between February 1 and March 31, 2027, a fifty-percent rate applies: five cents per litre on gasoline, two cents per litre on diesel and aviation fuel, and 5.5 cents per litre on leaded aviation gasoline. Full rates return on April 1, 2027.

» Sole proprietor vs. incorporated: how the deduction math shifts

Actual fuel costs feed vehicle expense claims for both business structures. When the federal excise tax is at zero, the pump price is lower, which flows through to a lower deduction and a lower HST base for input tax credit purposes. An input tax credit is how GST/HST registrants recover the HST paid on business expenses.

See our detailed guide to Canadian sole proprietor tax deductions for how vehicle expenses interact with home office and other common T2125 line items.

» A step-by-step plan before the tax returns

A short, practical roadmap you can work through between now and April 2027.

1. 1
   Audit your current fuel expense recordsPull all 2026 fuel invoices from April 20 onward. Confirm the pump receipt or fleet card statement shows HST calculated on the pre-excise price plus a zero-cent-per-litre excise line during the suspension window. If your bookkeeping software is still applying a pre-suspension excise assumption, correct it now.
2. 2
   Rebase your 2026 and 2027 vehicle expense projectionsFor sole proprietors and small fleets, restate expected fuel costs across three windows: zero cents per litre through January 31, 2027; fifty percent from February 1 to March 31, 2027; and full rates from April 1, 2027. Update any spreadsheets or advisory memos that show a single annualized fuel expense figure.
3. 3
   Re-check your HST input tax credit categorizationVerify that fuel HST ITCs are being claimed on the actual HST paid rather than on an assumed excise-inclusive base. Our overview of tax-saving strategies for Canadian small business owners covers ITC categorization.
4. 4
   Build a Q1 2027 cash-flow bufferFuel-intensive businesses such as delivery, trucking, agriculture, and construction should model a step-up in fuel expense from February 1, 2027, and a larger step from April 1. A small monthly buffer through Q1 can smooth the transition.
5. 5
   Update passthrough pricing and client contractsIf your service pricing passes fuel costs to clients, review contract language now. Waiting until April 2027 to renegotiate is generally harder than adjusting a fuel surcharge clause today.

» Excise tax vs. carbon charge: different programs, different rules

The federal fuel excise tax and the federal fuel charge (carbon pricing) are two separate federal programs administered under different legislation. The excise tax is imposed under the Excise Tax Act. The federal fuel charge sits under the Greenhouse Gas Pollution Pricing Act and is a distinct mechanism.

The September 2, 2026 announcement affects only the excise tax. It does not change carbon pricing, the Canada Carbon Rebate, or provincial fuel taxes. Our explainer on the carbon tax and the federal fuel charge for SMEs unpacks the distinction in detail.

When people ask whether "the gas tax" was extended, they typically mean the excise tax. That is the measure covered here.

» Common mistakes to avoid before April 1, 2027

Seven planning errors we see most often when clients ask about the extension.

• →Assuming the federal gas tax already returned to full rates in September 2026. It did not. The extension keeps it at zero cents per litre through January 31, 2027.
• →Confusing the federal fuel excise tax with the federal fuel charge (carbon pricing). They are separate programs under different legislation, and only the excise tax is affected here.
• →Over-forecasting 2026 fuel expense deductions when actual per-litre costs are lower due to the suspension.
• →Missing the fifty-percent phase-in window between February 1 and March 31, 2027 in cash-flow forecasts and quarterly budgets.
• →Claiming HST input tax credits on a pre-suspension excise-inclusive base rather than on the actual HST paid at the pump or on the fleet invoice.
• →Forgetting to update passthrough pricing clauses in client contracts when fuel is a billable cost.
• →Assuming the extension applies only to gasoline. It covers gasoline, diesel, and aviation fuels, and the per-litre saving differs by fuel type.

Our explainer on car allowance rules in Canada covers a related mistake many business owners make when they mix reimbursement models with actual-expense claims.

» Frequently asked questions

Sources & References

1. Department of Finance Canada. "The Government of Canada extends the federal fuel excise tax relief on gasoline, diesel, and aviation fuels for Canadians." September 2, 2026. canada.ca
2. Department of Finance Canada. "Temporarily suspending the federal fuel excise tax." April 2026. canada.ca
3. Government of Canada. "Excise Tax Act (R.S.C., 1985, c. E-15)." justice.gc.ca
4. Canada Revenue Agency. "T2125 Statement of Business or Professional Activities." canada.ca