Bonus Amount
$10,000.00
Net Bonus (After Tax)
$6,635.00
Total Deductions
$3,365.00
Effective Bonus Rate
33.6%
Marginal Rate
29.6%
Tax on your bonus is calculated at marginal rates -- the additional tax you pay by adding the bonus to your regular salary of $75,000.00.
| Salary Only | Salary + Bonus | Difference | |
|---|---|---|---|
| Gross Income | $75,000.00 | $85,000.00 | +$10,000.00 |
| Total Tax | $19,384.27 | $22,749.27 | +$3,365.00 |
| Net Pay | $55,615.73 | $62,250.73 | +$6,635.00 |
Why does my bonus seem so heavily taxed?
Bonuses are not taxed at a special rate. They are added to your regular income and taxed at your marginal rate. Since your salary already fills the lower tax brackets, the bonus sits entirely in your highest bracket. For example, if your salary puts you in the 29% federal bracket, every dollar of your bonus is taxed at 29% federally, plus provincial tax on top. This makes the effective rate on the bonus higher than your overall effective rate.
How does CRA withhold tax on bonuses?
CRA requires employers to use the "bonus method" for lump-sum payments. Your employer calculates the annual tax on your regular pay, then calculates the annual tax on regular pay plus the bonus, and withholds the difference. This is generally accurate, but if you receive multiple bonuses or your income varies, the withholding may be slightly off. You will settle any difference when you file your tax return.
What is the difference between "bonus method" and "periodic method"?
The periodic method treats the bonus as if it were regular pay for that period, which can result in over-withholding. The bonus method (the CRA-recommended approach) calculates the incremental tax on the bonus by comparing annual tax with and without the bonus. This is more accurate because it accounts for your actual marginal rate rather than annualizing a single large payment.
Can I reduce tax on my bonus?
Yes. One effective strategy is to contribute part or all of your bonus to your RRSP. This reduces your taxable income and saves tax at your marginal rate. For example, if your combined marginal rate is 43%, a $10,000 RRSP contribution saves you $4,300 in tax. You can also request your employer make the RRSP contribution directly, avoiding withholding entirely.
Are bonuses subject to CPP and EI?
Yes. Bonuses are considered pensionable and insurable earnings. CPP contributions apply until you reach the annual maximum pensionable earnings ($71,300 for CPP, $81,200 for CPP2). EI premiums apply until you reach the maximum insurable earnings of $65,700. If you have already maxed out CPP or EI through your regular pay, no additional deduction will apply to the bonus.
CRA-Aligned: This calculator uses official CRA rates for the 2025 tax year. Results are indicative -- consult a tax professional for complex bonus situations.
Disclaimer: This calculator provides estimates based on current CRA rates and thresholds for the 2025 tax year. It does not constitute professional tax, financial, or legal advice. Your actual liability may differ depending on your individual circumstances. Always consult a qualified accountant before making financial decisions. Read our terms
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