Marginal Tax Rate Calculator

Marginal vs Effective Tax Rate in Canada

Your marginal tax rate is the tax you pay on your next dollar of income. It is determined by your highest applicable federal and provincial tax brackets combined. Your effective (average) tax rate is your total tax divided by your total income — it is always lower than your marginal rate because Canada’s progressive system taxes your first dollars at the lowest bracket. Understanding the distinction is critical for financial decisions: RRSP contributions save tax at your marginal rate, not your average rate. A $10,000 RRSP contribution at a 43% marginal rate saves $4,300 in tax.

Bracket creep occurs when inflation pushes your nominal income into a higher tax bracket even though your real purchasing power has not increased. The federal government indexes brackets annually to CPI, but several provinces — notably Nova Scotia and Prince Edward Island — have historically been slow to index, resulting in stealth tax increases. In 2026, federal brackets increased by approximately 2-3% from 2025 values. Always check whether your province indexes its brackets when evaluating year-over-year changes to your marginal rate.

Top Combined Marginal Rates by Province (2026)

Knowing your marginal rate helps with several planning decisions. RRSP contributions are most valuable when your marginal rate is high now and you expect to withdraw at a lower rate in retirement. Pension income splitting can shift up to 50% of eligible pension income to a lower-income spouse, effectively lowering the couple’s combined marginal rate. Similarly, contributing to a spousal RRSP or TFSA can help equalize retirement income and minimize the overall household tax burden. If your marginal rate exceeds 50%, each additional dollar earned nets you less than 50 cents after tax.