Carbon Tax Removal 2025: Impact on Ontario Heating Costs

What the April 2025 carbon tax removal actually changed

On March 15, 2025, the Department of Finance Canada announced that the federal government would end the consumer fuel charge by setting the fuel charge rates to zero effective April 1, 2025 through an Order in Council amending the Fuel Charge Regulations made under the Greenhouse Gas Pollution Pricing Act (GGPPA). The change zeroed the per-unit rate on gasoline, diesel, natural gas, propane, and other listed fuels for direct consumer use.[1]

In May 2025, Finance Canada announced follow-up legislation to remove the consumer fuel charge provisions from the GGPPA entirely, converting the regulatory zeroing into a statutory removal. The Canada Revenue Agency published FCN16 Removal of the fuel charge, which sets out transitional rules, final return filing deadlines, inventory declarations for registrants, and the wind-down procedure for fuel charge accounts.[2][3]

The final consumer fuel charge rates published by CRA, applicable through March 31, 2025, reflected the $80 per tonne CO2 equivalent benchmark. For marketable natural gas, the listed rate was approximately $0.1524 per cubic metre. The $80 per tonne level was the 2024-2025 step in the federal benchmark schedule established under the pan-Canadian approach to carbon pricing.[4][5]

Two features of the removal are worth noting for Ontario households. First, the change applied to the federal fuel charge only. Provincial industrial carbon pricing programs, the federal output-based pricing system backstop, and sector-specific regulations such as the Clean Fuel Regulations were not affected by the April 2025 action. Second, the Canada Carbon Rebate (formerly the Climate Action Incentive Payment) that accompanied the consumer fuel charge was ended in parallel, so households that previously received quarterly rebate deposits no longer receive them. The fiscal picture for a given household depends on which side of the charge-rebate equation they were on before April 2025.[1][6]

How much it saves the typical Ontario household

The gross impact on a residential natural gas bill is the product of annual consumption and the removed per-cubic-metre charge. Ontario residential gas consumption varies substantially with home size, vintage, and heating system. The table below shows the gross annual savings at the final $0.1524 rate before HST.

These are gross numbers on the commodity line only. HST continues to apply to the remaining gas charges, and delivery, transportation, and customer charges are unchanged. Households should expect the net reduction on their monthly bill to track the product of their billed consumption and the removed rate, less HST that was previously collected on the carbon charge component.[10]

The Parliamentary Budget Officer has consistently noted that gross fuel charge savings must be viewed alongside the now-ended Canada Carbon Rebate (formerly Climate Action Incentive Payment) that partially or fully offset the charge for most households in Ontario. The PBO's 2024 distributional analysis update examined how removal of both the charge and the rebate affect household fiscal impact across income deciles, finding that rebate cessation materially changes the net picture relative to gross gas bill savings alone.[6][7]

Where it shows on your Enbridge bill

Ontario residential customers of Enbridge Gas can locate the change by looking at the Gas Supply section of their invoice. Prior to April 1, 2025, a line labelled Federal Carbon Charge appeared with a per-cubic-metre rate multiplied by billed consumption. Enbridge's Federal Carbon Charge rate page on enbridgegas.com reflects the regulated rate in effect for each period.[11]

The OEB's consumer guidance document Understanding your natural gas bill identifies each component: Gas Supply (commodity), Delivery (including transportation and distribution), a fixed customer charge, and historically the Federal Carbon Charge. After the removal, the carbon charge line reflects the zero rate or is combined into the residual gas supply line depending on bill presentation period.[10][12]

For reference, the variable portion of an Ontario residential gas bill under the pre-removal rate structure broke down roughly as follows, using approximate 2025 Enbridge rate schedule values. The exact numbers vary by rate class (Rate 1 for most residential customers, Rate M1 legacy in certain zones) and by the quarterly gas supply update. These values are illustrative and not a substitute for current published rates.

The federal carbon charge represented between 20 and 30 percent of the total variable cost per cubic metre in the final year before removal, depending on where the gas supply rate sat in its quarterly cycle. Its disappearance is meaningful on the variable side of the bill but does not change the fixed customer charge or the delivery infrastructure component. Households that were already low gas users still face the full monthly customer charge.[11][12]

What stayed: provincial OBPS, industrial carbon pricing, and retail regulation

The consumer fuel charge is only one component of carbon pricing in Canada. What remains in place after April 2025:

• Industrial carbon pricing. Large industrial emitters remain subject to carbon pricing through the federal output-based pricing system (OBPS) backstop and provincial equivalents. Ontario's Emissions Performance Standards program, administered provincially, covers facilities above the emissions threshold. The federal benchmark continues to require covered provinces to maintain an industrial pricing system that meets minimum stringency.[5]
• Large-emitter trading systems are now the dominant policy lever. The Canadian Climate Institute, in its ongoing assessments of Canadian carbon pricing, identifies industrial carbon pricing as the single largest contributor to projected emissions reductions in Canada through 2030. Nothing about the consumer charge removal changes that.[13]
• Retail electricity rate regulation. Ontario electricity rates continue to be set by the Ontario Energy Board under the Regulated Price Plan, independent of federal carbon pricing. Time-of-use, tiered, and ultra-low overnight pricing structures all remain in force.[10]

Background: how the federal fuel charge on natural gas was calculated

The federal fuel charge was imposed under Part 1 of the Greenhouse Gas Pollution Pricing Act and administered by the Canada Revenue Agency. Rates were set per unit of fuel (per cubic metre for natural gas, per litre for gasoline and diesel, and so on) and escalated annually to reflect the legislated carbon price trajectory set out in the federal benchmark. The benchmark schedule moved from $20 per tonne in 2019 to $80 per tonne in April 2024, with a planned trajectory to $170 per tonne by 2030 that was halted by the 2025 removal.[4][5]

CRA's Fuel charge rates publication lists the historical per-unit rates for each fuel type and province, with the natural gas rate reaching $0.1524 per cubic metre at the $80 per tonne step. The charge applied in the listed (backstop) provinces, which included Ontario throughout the life of the consumer fuel charge.[4]

PBO analysis of household-level cost and rebate impact

The Parliamentary Budget Officer published multiple distributional analyses of the federal fuel charge and Canada Carbon Rebate. The 2024 update, A Distributional Analysis of the Federal Fuel Charge, modelled fiscal impact by household for the backstop provinces, broken down by income quintile. Key findings from the PBO's work: for lower-income households in Ontario, the Canada Carbon Rebate generally exceeded fuel charge costs; for higher-income and higher-consumption households, the charge exceeded the rebate. The PBO's methodology accounts for direct fuel purchases and indirect costs passed through consumer goods and services.[6]

The PBO also maintained a separate analytical blog on the treatment of economic feedback effects from carbon pricing, which became the subject of extensive policy debate. The consumer charge removal eliminates both the direct cost and the associated rebate, so the net household fiscal impact depends on where each household sat on the distribution prior to April 2025.[7]

For Ontario specifically, the PBO's backstop province analysis treated Ontario as one of the jurisdictions where the federal fuel charge applied to consumer fuels. Natural gas, being the dominant residential heating fuel in Ontario, was the single largest source of household-level fuel charge payments tracked in the PBO models. That concentration is why the April 2025 removal has a more visible per-household effect in Ontario than in provinces where gas heating share is lower or where a different provincial system was already in place.[6]

Enbridge QRAM filing mechanics and propagation to bills

Enbridge Gas operates under a Quarterly Rate Adjustment Mechanism (QRAM) approved by the Ontario Energy Board. Under QRAM, gas supply and related commodity-side charges are updated each quarter to reflect forecast gas costs, transportation costs, and regulated pass-through items. The federal carbon charge was handled as a pass-through rider on Enbridge's rate schedules and adjusted through a separate but related annual Federal Carbon Pricing Program application. The 2024 and 2025 Federal Carbon Pricing Program filings (EB-2023-0196 and EB-2024-0251) document how the charge was set and collected prior to removal.[8]

For the removal itself, the OEB issued backgrounders on Enbridge's QRAM decisions covering the period straddling April 1, 2025, including EB-2025-0078. These interim rate orders set out how the zero-rated federal carbon charge was reflected in Enbridge's customer rates and when customer invoices began showing the change.[9]

For customers, this means the removal appeared on bills issued for consumption on or after April 1, 2025. Customers with billing periods spanning the effective date may have seen a prorated line, with consumption before April 1 still carrying the final rate and consumption on or after April 1 carrying zero. Enbridge's billing documentation and the OEB's bill explanation guide clarify how period-straddling invoices are presented.[10][11]

Ontario Ministry of Finance and OEB response to the removal

Ontario did not operate a consumer carbon tax of its own at the time of removal; the province exited its cap-and-trade system in 2018 and relied on the federal backstop for consumer pricing. As a result, the April 2025 removal required no direct legislative response from the Ontario Ministry of Finance on the consumer side. The OEB's role was limited to administering the rate mechanics through the regular QRAM and Federal Carbon Pricing Program processes, ensuring that the zero rate flowed through to Enbridge customer bills without separate ratepayer approval being required.[8][9]

Industrial pricing in Ontario continues under the provincial Emissions Performance Standards program for covered facilities, and remains within the federal benchmark framework for large emitters.[5]

What it means for your heating decision (gas vs heat pump)

The removal narrows the operating cost advantage of a cold-climate heat pump relative to a high-efficiency gas furnace, but does not close it. The reason is physical: a heat pump moves heat using a vapour-compression cycle and delivers 2.5 to 3.5 units of thermal energy per unit of electricity consumed at Ontario winter conditions, while a 96 percent AFUE gas furnace delivers 0.96 units of thermal energy per unit of gas energy. Carbon pricing affected the cost per unit of input energy, not the efficiency ratio of each technology.[14]

The table below shows an illustrative annual heating operating cost comparison for a typical 2,000 square foot Ontario detached home, assuming current Ontario residential electricity and natural gas rates and no federal fuel charge. Actual numbers depend on building envelope, setpoints, climate zone, and which electricity plan the household uses.

The C.D. Howe Institute's research on replacing gas and oil in Canadian homes concludes that electrification decisions are driven by equipment cost, installation complexity, envelope condition, and grid capacity more than by the marginal price signal from consumer carbon pricing. That remains true after the removal.[14]

For households on oil, propane, or electric baseboard, the removal has no material effect on the switching case. Heat pumps remain substantially cheaper to operate than any of those three baselines, and most available rebate dollars target precisely that transition.

The payback calculation for a gas-to-heat-pump retrofit does shift modestly. With the carbon charge in place, annual operating savings from moving a typical 2,200 m3 per year home off gas to a cold-climate heat pump were in the range of $600 to $1,000. With the charge removed, that savings band compresses to roughly $400 to $700, depending on electricity plan and heat pump seasonal performance. Whether that changes the decision depends on upfront cost, available rebate stacking, and how the homeowner weighs the non-cost attributes of each system such as cooling capability, indoor air quality, and building code alignment.[14]

Related programs unaffected by the removal

The rebate and retrofit programs that have driven Ontario heat pump adoption over the past several years are administered independently of the federal fuel charge and continue to operate:

• Home Renovation Savings Program (HRS). Delivered through Enbridge Gas under OEB oversight. Offers rebates for insulation, windows, air sealing, and heat pump installations. Program budgets and incentive levels are set through the Enbridge Demand Side Management framework, not through federal carbon pricing.
• Home Efficiency Rebate Plus (HER+). The Enbridge and Natural Resources Canada jointly branded rebate program for retrofits including heat pumps continues subject to current program terms.
• Canada Greener Homes Affordability Program (CGHAP).Federal affordability-targeted retrofit funding remains a separate legislative authority from the GGPPA fuel charge provisions.

Homeowners should verify current program terms directly with the administering utility or ministry before relying on specific incentive amounts. Program envelopes can close or reopen on short notice, and eligibility criteria change from year to year.

The connection between carbon pricing policy and these rebate programs is worth clarifying, because it is a common source of confusion. The rebate programs draw authority and funding from different statutory and regulatory sources than the consumer fuel charge. Enbridge demand side management is approved under the Ontario Energy Board Act. Canada Greener Homes Affordability is funded through Natural Resources Canada appropriations. The federal consumer fuel charge was collected under the GGPPA and administered by CRA. Ending the fuel charge by regulation and then by statute did not touch the enabling legislation or the budgeting process for any of the rebate vehicles listed above. That said, future fiscal framework decisions at the federal and provincial levels could affect any of these programs independently, so homeowners planning to rely on a rebate dollar figure in their purchase decision should confirm availability before signing a contract.

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