How does Canada's tax system work?

The Canadian tax system is a multi-level, predominantly self-assessed system operated by federal, provincial or territorial, and municipal governments. The federal Income Tax Act, the Excise Tax Act, and parallel provincial statutes set the legal framework. The Canada Revenue Agency (CRA) administers federal tax and, under collection agreements, the personal income tax of every province except Quebec, where Revenu Quebec administers provincial tax. Most working Canadians interact with the system through monthly payroll deductions and an annual T1 return.

Personal income tax is progressive at both federal and provincial levels. Federal marginal rates for 2025 run from 15 per cent on the first roughly $55,000 of taxable income to 33 per cent on income above approximately $246,000. Provincial rates vary widely: Alberta uses a relatively flat schedule, while Quebec, Nova Scotia, and Newfoundland and Labrador have combined federal-provincial top rates above 53 per cent. Tax credits including the basic personal amount, the Canada Child Benefit, the Canada Workers Benefit, the disability tax credit, and the Climate Action Incentive Payment offset tax for lower-income households.

Consumption taxes are levied on most purchases. The federal Goods and Services Tax (GST) of 5 per cent applies nationally and is harmonised with provincial sales tax in five provinces (the Harmonised Sales Tax, or HST, runs at 13 per cent in Ontario and 15 per cent in the Atlantic provinces). British Columbia, Saskatchewan, Manitoba, and Quebec collect separate provincial sales taxes alongside the GST. Alberta and the three territories levy no provincial sales tax. Excise taxes on fuel, tobacco, alcohol, and cannabis add additional revenue. Property tax funds municipal services and is assessed on the market value of real estate.

The Canadian tax system funds the public services that distinguish Canada from many comparable economies. Universal public health insurance, public education, the Canada Pension Plan and Old Age Security, Employment Insurance, the Canada Child Benefit, and federal transfers to provinces and Indigenous governments all depend on tax revenue. Federal-provincial transfers in 2024-2025 included the Canada Health Transfer ($49.4 billion), the Canada Social Transfer ($16.4 billion), and Equalization payments ($25 billion) to less prosperous provinces. Tax fairness, the carbon-pricing system, and the General Anti-Avoidance Rule are active areas of policy debate.