Marginal tax rates, for Canadians

Everyone in Canada has heard the phrase “marginal tax rate”. Most of us have a vague sense of what it means. But the way it actually works isn’t what most people think, and it’s the single most important number for almost any financial decision you’ll make this year.

Your marginal tax rate is the percentage of tax you pay on the next dollar of income. Not the average across everything you earn. Not your total tax divided by your salary. Just the next dollar. And in Canada, that next-dollar rate is the result of two layers stacked on top of each other: the federal bracket your income falls into, and the provincial bracket on top of it.

For 2026, the federal brackets are 14% / 20.5% / 26% / 29% / 33% at thresholds of roughly $58,523 / $117,045 / $181,440 / $258,482. Your combined marginal rate is whichever federal rate applies to your income, plus whatever provincial rate also applies. For a salaried Ontario worker earning $80,000, that combined number is about 29.65%.

How Canada’s tax brackets actually work

Canada’s federal income tax is a progressive system. Different chunks of your income get taxed at different rates. The rule is not “you cross $58,523 so your whole salary is taxed at 20.5%”. It’s “the first $58,523 is taxed at 14%, and the part above $58,523 is taxed at 20.5% until you cross the next boundary”.

For 2026, the federal brackets and rates look like this:

• 14% on the first $58,523 of taxable income
• 20.5% on the next $58,522 (up to $117,045)
• 26% on the next $64,395 (up to $181,440)
• 29% on the next $77,042 (up to $258,482)
• 33% on every dollar above $258,482

The brackets are indexed to inflation, so the boundaries creep up slightly every year. The CRA publishes the official figures each November for the following tax year.

Your province stacks on top

Every province has its own tax brackets that stack on top of the federal ones. Same progressive structure: rates rise as your income climbs. Your actual marginal tax rate is the sum of the federal rate at your income level plus the provincial rate at your income level.

Ontario, for example, has these provincial brackets for 2026:

• 5.05% on the first $53,891
• 9.15% on the next $53,894 (up to $107,785)
• 11.16% on the next $42,215 (up to $150,000)
• 12.16% on the next $70,000 (up to $220,000)
• 13.16% on every dollar above $220,000

Stacking the two systems gives you the actual marginal rate that hits the next dollar of your income. The math isn’t quite as simple as adding the rates from each table. Federal and provincial boundaries don’t line up at the same income levels, so your marginal rate can change at any point where either system crosses a boundary.

Combined Ontario marginal rates (2026)

Stacking the federal + Ontario tables gives roughly these combined marginal rates:

• $0 to $53,891: 19.05%
• $53,891 to $58,523: 23.15%
• $58,523 to $107,785: 29.65%
• $107,785 to $117,045: 31.66%
• $117,045 to $150,000: 37.16%
• $150,000 to $181,440: 38.16%
• $181,440 to $220,000: 41.16%
• $220,000 to $258,482: 42.16%
• Above $258,482: 46.16%

These rates shift slightly each year due to indexation. For any other province the logic is the same: federal brackets stay the same across the country, but the provincial layer changes based on where you file.

A worked example

Take an Ontario worker earning $80,000 of T4 income in 2026. After CPP, EI, and similar pre-tax deductions, taxable income lands at roughly $77,500.

That puts their next dollar of income squarely in the $58,523 to $93,000 combined band. Marginal rate on the next dollar:

That number means:

• Earning an extra $1,000 in side income? About $296.50 goes to tax.
• Contributing $1,000 to an RRSP? You get an immediate $296.50 of tax savings.
• Getting a $5,000 raise mid-year? About $1,483 will be taxed away at the margin.

Importantly, this worker isn’t paying 29.65% on their whole $80,000. The first $53,891 is taxed at 19.05% combined, the next $4,632 at 23.15%, the next $18,977 at 29.65%. Their average tax rate works out to roughly 22%. Their marginal rate (the rate that applies to the next decision they make) is 29.65%.

The average tax rate tells you how much you’ve paid. The marginal rate tells you what to do next.

Why this number drives every decision

Every major personal-finance decision in Canada hinges on your marginal tax rate. RRSP contributions save you tax at your marginal rate, not your average rate. The TFSA-versus-RRSP comparison is entirely a comparison of your marginal rate today against your projected marginal rate in retirement (the entire RRSP vs TFSA question is nothing more than that). Side income, business income, and freelance earnings all get taxed at your marginal rate. So does interest from non-registered savings.

This is also why the “a raise will push me into the next bracket” fear is overblown. Crossing a bracket boundary only affects the dollars above the boundary. Every dollar below keeps its old rate. A raise always nets positive. The total tax bill rises, sure, but never by more than the raise itself.

The misconceptions worth clearing up

Three patterns come up over and over when people talk about marginal tax rates.

“I make $80,000 so I’m in the 29% federal bracket”. Not quite. At $80,000 you’re in the 20.5% federal bracket. The number people often cite combines federal plus provincial, which for an Ontario earner at $80,000 is about 29.65%.

“A raise will move me into a higher bracket and I’ll lose money”. Impossible. Only the dollars above the new bracket boundary get taxed at the higher rate. Every dollar below keeps its old rate.

“My tax rate is 30%”. Usually this person means their marginal rate. Sometimes they mean their average. The two numbers can be very different. For the $80,000 Ontario earner above, marginal is 29.65% and average is closer to 22%.