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Marginal vs Average Tax Rate (and Why a Raise Never Costs You)

Updated June 3, 2026

Ask most people how tax brackets work and you’ll hear some version of: “Careful with that raise — it could push you into a higher bracket and you’ll take home less.” It’s the most persistent myth in personal finance, and it’s completely false. Understanding why comes down to two rates: your marginal rate and your average rate.

Brackets are marginal — only the top slice moves up

Canada uses a marginal (or “progressive”) tax system. Your income is sliced into bands, and each band is taxed at its own rate. A higher bracket only applies to the income that falls inside that bracket — never to your whole income.

Here are the 2025 federal brackets (your province adds its own on top):

The key word is “on income in this band.” When you cross into the 20.5% bracket, only the dollars above $57,375 are taxed at 20.5%. Everything below is still taxed at 14.5%.

Why a raise always leaves you ahead

Suppose you earn exactly $57,375 and get a $5,000 raise. Only that new $5,000 sits in the 20.5% bracket, so you pay about $1,025 of federal tax on it and keep roughly $3,975. Your existing income is taxed exactly as before. You come out ahead — you cannot lose money by earning more. The “bump” only ever touches your next dollars, never your first ones.

Marginal vs average: two different numbers

These two rates answer different questions:

• Marginal rate — the rate on your next dollar (the bracket you’re currently in). It tells you the tax on a raise, a bonus, or a capital gain, and the savings from an RRSP or FHSA deduction.
• Average rate — your total tax ÷ total income. It’s your overall tax burden, and it’s always lower than your marginal rate, because your early dollars were taxed in the lower brackets.

Take someone earning $70,000 (federal tax only, ignoring credits, to show the mechanic):

Their marginal rate is 20.5% (the next dollar lands in the second bracket), but their average rate is only $10,907 ÷ $70,000 ≈ 15.6%. Two very different numbers for the same person — and the average is what you actually pay overall.

(This simplified example uses federal brackets only. Real life also subtracts the basic personal amount — roughly the first $16,000 is effectively tax-free — and adds provincial tax, CPP, and EI. The take-home pay calculator does the full, province-by-province math.)

Why the difference matters

• RRSP and FHSA deductions are worth your marginal rate. A $1,000 RRSP contribution for someone with a 30% combined marginal rate saves $300 — see TFSA vs RRSP.
• Capital gains add to your income, so the taxable half is taxed at your marginal rate too — explained in how capital gains are taxed.
• Planning your overall budget uses your average rate — what you keep across your whole paycheque.

Combined federal-plus-provincial marginal rates in Canada run from around 20% at lower incomes to over 50% at the very top — but your average rate is always comfortably below your marginal one.

The takeaway

• Brackets are marginal: a higher rate applies only to the income inside that bracket, so a raise always increases your take-home pay.
• Your marginal rate is the tax on your next dollar (and the value of a deduction); your average rate is your overall burden — and it’s always lower.
• See your real marginal and average rates for your province in the take-home pay calculator.

This is general education, not financial advice. Tax brackets and credits change yearly and vary by province.