A marginal tax rate calculator shows you the exact federal and provincial tax rate applied to your next dollar of income, your effective (average) tax rate, and a complete tax breakdown. Understanding your marginal rate is essential for making informed decisions about RRSP contributions, investment strategies, income splitting, and salary negotiations.
If you are applying that rate to a real planning choice, pair it with the income tax calculator and the capital gains tax calculator. Then use the result to time contributions and withdrawals for your household plan.
How this marginal tax rate calculator works
Select your province and enter your taxable income. The calculator instantly displays your federal marginal rate, provincial marginal rate, combined marginal rate, effective rate, and a detailed breakdown of total federal tax, provincial tax, and after-tax income. It also shows the tax impact on your next $1,000 of income.
2026 Federal tax brackets
| Taxable Income | Federal Rate | Cumulative Tax |
|---|---|---|
| $0 – $57,375 | 15% | $8,606 |
| $57,375 – $114,750 | 20.5% | $20,368 |
| $114,750 – $158,468 | 26% | $31,735 |
| $158,468 – $220,000 | 29% | $49,579 |
| Over $220,000 | 33% | — |
Combined marginal rates by province (at $100,000)
| Province | Federal | Provincial | Combined |
|---|---|---|---|
| Alberta | 20.5% | 10.0% | 30.50% |
| British Columbia | 20.5% | 10.5% | 31.00% |
| Manitoba | 20.5% | 12.75% | 33.25% |
| New Brunswick | 20.5% | 14.0% | 34.50% |
| Newfoundland | 20.5% | 15.8% | 36.30% |
| Nova Scotia | 20.5% | 16.67% | 37.17% |
| Ontario | 20.5% | 11.16% | 31.66% |
| Quebec | 20.5% | 19.0% | 39.50% |
| Saskatchewan | 20.5% | 12.5% | 33.00% |
Rates shown for income around $100,000. Actual rates depend on exact income and bracket.
Why your marginal rate rises in steps
Canada uses a progressive tax system where each income bracket is taxed at a higher rate. This means:
- Only the income within each bracket is taxed at that rate — not your entire income
- Your effective rate is always lower than your marginal rate
- Moving to a higher bracket does not increase tax on income already below that threshold
Common misconception: “If I earn $1 more and move into a higher bracket, all my income gets taxed at the higher rate.” This is false. Only the $1 above the bracket threshold is taxed at the new rate.
Practical applications of your marginal rate
RRSP contribution decisions
Your RRSP tax savings equal your contribution × your marginal rate. At a 43% rate, a $10,000 RRSP contribution saves $4,300 in tax. This is why RRSP contributions are most valuable when your marginal rate is high.
Overtime and side income
Every extra dollar of overtime or side hustle income is taxed at your marginal rate. If your marginal rate is 43%, you only keep $570 of every extra $1,000 earned.
Salary negotiations
Use your marginal rate to understand the after-tax value of a raise. A $5,000 raise at a 43% marginal rate adds only $2,850 to your annual take-home pay.
Charitable donations
Donations over $200 receive a tax credit at the top marginal rate (33% federal if income exceeds $220,000), making charitable giving more tax-efficient for high earners.
Related calculators
- Income Tax Calculator — Full federal and provincial tax calculation
- RRSP Calculator — See how RRSP contributions reduce your tax
- RRSP vs TFSA Calculator — Compare accounts using your marginal rate
- Raise Calculator — See after-tax impact of a salary increase
- Overtime Calculator — Calculate after-tax overtime earnings
- Side Hustle Tax Calculator — Tax on self-employment income
- Withholding Tax Calculator — Estimate tax withheld from paycheques