Two Tax Layers on One Income
Canadian income tax is not a single number — it is two progressive systems charged on the same taxable income. The federal government levies the same five brackets (15% to 33%) on everyone in the country, and then the province or territory you resided in on December 31 adds its own set of brackets on top. That second layer is where outcomes diverge sharply: Alberta stays close to a flat 10%, while Quebec's provincial rate climbs to 25.75%. This calculator applies both layers to the income you enter, subtracts the federal and provincial basic personal amounts that keep your first dollars tax-free, and shows federal tax, provincial tax, and the total side by side.
A Worked Example: Ontario at $90,000
Say you have $90,000 of taxable income in Ontario. Federally, the first $55,867 is taxed at 15% and the remaining $34,133 at 20.5%, giving roughly $8,380 + $6,997 = about $15,380 in federal tax before credits. Ontario then applies its own brackets (5.05% and 9.15% at this income) for roughly $5,900 in provincial tax. Together that is about $21,300 — but here is the key distinction. Your combined marginal rate, the tax on your next dollar, is around 29.65% (20.5% federal + 9.15% Ontario). Your effective rate, total tax ÷ income, is only about 23.7%. The marginal rate tells you what a raise or an RRSP deduction is worth; the effective rate tells you what share of your whole income actually left in tax. They are never the same number in a progressive system.
Why the Province You Live In Changes the Answer
Because the federal layer is constant, moving between provinces changes only the provincial slice — but that slice can swing your combined marginal rate by ten points or more at the same income. A high earner in Alberta faces a top combined rate near 48%, while the same earner in Newfoundland & Labrador, Nova Scotia, or Quebec crosses 53%. Some provinces also add wrinkles the brackets alone don't show, such as Ontario's surtax on high provincial tax or Quebec's separate return and federal abatement. Switch the province in the dropdown to see how identical income is taxed differently across the country.
Canada Provincial Income Tax Calculator
How It Works
Every Canadian resident pays two layers of income tax on the same taxable income: a federal layer that is identical from Whitehorse to St. John's, and a provincial or territorial layer set by the province where you lived on December 31. This tool applies both sets of brackets to the income you enter, subtracts the basic personal amounts that shelter your first dollars, and reports the total alongside your marginal and effective rates.
The basic rule:
- Federal tax: 15% to $55,867, 20.5% to $111,733, 26% to $154,906, 29% to $220,000, 33% above
- Basic personal amount: federal $15,705 (2024)
- Combined marginal rate = Federal marginal rate + Provincial marginal rate
- Effective rate = Total tax / Taxable income x 100
The result is a planning estimate. RRSP contributions, dividend gross-ups, and dozens of credits shift the real number, so confirm against CRA and your provincial tax tables before you file.
Frequently Asked Questions
How do federal and provincial income tax combine?
They stack on the same taxable income but are calculated on separate bracket schedules. First the federal brackets (15% through 33%) run against your income, then your province's own brackets run against the same income. Add the two tax figures for your total. Everywhere except Quebec, the CRA collects both on one return; Quebec residents file a second provincial return with Revenu Québec.
What is the difference between my marginal rate and my effective rate?
Your marginal rate is the combined federal + provincial rate charged on your next dollar of income — it is what matters for a raise, a bonus, or an RRSP deduction. Your effective (average) rate is total tax ÷ total income, which blends the lower brackets your early dollars sit in. Because Canada is progressive, your effective rate is always well below your marginal rate. Someone in Ontario at $90,000 might face a 29.65% marginal rate but only a ~23.7% effective rate.
Which province taxes income the least?
Alberta consistently has the lightest provincial load, historically a near-flat 10% on the first ~$142,000 with a top combined rate around 48%. The territories (Nunavut, Northwest Territories, Yukon) are also low. Quebec and the Atlantic provinces such as Nova Scotia and Newfoundland & Labrador sit at the high end, where top combined marginal rates exceed 53–54%.
Can my combined marginal rate really be over 50%?
Yes. At the federal top rate of 33% plus a provincial top rate in the high teens or low twenties, the top combined marginal rate exceeds 50% in every province and reaches roughly 53–54% in Newfoundland & Labrador, Nova Scotia, and Quebec (after Quebec's federal abatement). It means the government takes more than half of each additional dollar earned above the top threshold — but only above that threshold, not on your whole income.
Does an RRSP deduction lower my tax at my marginal rate?
Yes, and that is the point of it. An RRSP contribution reduces taxable income dollar for dollar, so the tax you save equals the contribution multiplied by your combined marginal rate. A $10,000 contribution for someone at a 43.4% marginal rate saves about $4,340 this year. That is also why contributing in a high-income year and withdrawing in retirement (at a lower rate) is the core RRSP tax play.
How is Quebec different from the rest of Canada?
Quebec administers its own income tax through Revenu Québec instead of the CRA, so residents file two returns. Its provincial brackets top out at 25.75%. To offset that, Quebec residents receive a 16.5% federal tax abatement, which lowers the effective federal portion. The province also funds programs other provinces leave to Ottawa, which is part of why headline Quebec rates look higher.
Why doesn't the calculator match my actual notice of assessment?
This tool estimates tax from the basic brackets and personal amounts only. Your real return also reflects credits (tuition, medical, donations, spousal), the dividend gross-up and tax credit, CPP and EI, and provincial surtaxes such as Ontario's. Use the estimate for planning and comparison, then rely on CRA and provincial tables or a tax professional for filing.