You got a $5,000 bonus, checked your bank account, and a lot less than $5,000 showed up. The internet told you bonuses are “taxed at a higher rate,” and now you’re annoyed at the government for a special bonus tax. There is no special bonus tax. A bonus is taxed exactly like any other dollar you earn. What you saw was withholding, and the difference matters more than it sounds.
The myth, said out loud
The myth goes: “Bonuses are taxed higher than regular pay.” People believe it because the bite on a bonus cheque really does look bigger than the bite on a normal paycheque. The paystub isn’t lying about what got taken off. It’s just not the final word on what you owe.
Here’s the real version: a bonus is ordinary employment income. It lands on your T4 with the rest of your pay, and it’s taxed at your marginal rate — the rate on your next dollar — same as a dollar of salary at that income. Not a penny higher. (If marginal rate is a fuzzy term, the 2026 tax brackets guide walks through it.)
So why does so much get taken off?
Because of where the bonus sits in your income — not because of any special rate.
Your regular paycheques are softened by the basic personal amount, the chunk everyone earns tax-free ($16,452 federally in 2026), and by the lower brackets, all spread across the whole year. A bonus lands entirely on top of that income, so every dollar of it is withheld at your full marginal rate — there’s no tax-free cushion left to apply, because that’s already been used up against your regular pay. The result: a bigger share comes off the bonus than off a normal cheque. That share is your real marginal rate, not a penalty.
Employers work out the withholding with what the CRA calls the bonus method: estimate your income for the year, calculate the extra tax the bonus adds on top of it, and withhold that. It adds the bonus to your income once — it does not pretend the bonus repeats every payday — so it’s designed to land close to the tax you actually owe on the bonus. Contrary to the popular story, it usually isn’t wildly over-withheld, and you shouldn’t bank on getting a big chunk back.
The key word is withholding. It’s a prepayment toward your tax bill, not the bill itself — and it gets reconciled when you file.
How it sorts itself out
At tax time, none of that withholding guesswork survives. The CRA adds up your actual total income for the year, applies the actual brackets, and works out what you actually owe. Then it compares that to everything that was withheld from every cheque — salary and bonus alike.
If more was withheld across the year than you actually owe, the difference comes back as a refund; if less, you pay the balance. The bonus got no special treatment in either direction — it was only ever taxed at your real marginal rate. The paystub was a placeholder; the tax return is the settlement.
So the honest answer to “how much tax will I pay on my bonus?” is: your marginal rate. If your next dollar of income is taxed at 30% combined federal-and-provincial, your bonus is taxed at about 30% — regardless of what the cheque withheld on the day.
You can see your marginal rate for your province and income in the take-home pay calculator; that’s the rate that ends up applying to the bonus.
The parts that genuinely do come off
Two things on a bonus aren’t “extra tax” but do reduce the cheque, and they’re worth knowing:
- CPP and EI. A bonus has Canada Pension Plan and Employment Insurance taken off it just like regular pay, until you’ve hit the annual maximums. In 2026 that’s $4,230.45 of CPP and $1,123.07 of EI for the year, total, across all your pay. If your salary already maxed them out before the bonus, none comes off the bonus. If not, some will — and it isn’t income tax, it’s contributions.
- A genuinely higher bracket. If the bonus is large enough to push some of your income into the next bracket, those dollars really are taxed at the higher rate — but only the dollars above the threshold, not the whole bonus. That’s the brackets working normally, not a bonus penalty.
The move worth knowing: bonus straight to RRSP
Here’s the one lever that changes the math. If you have RRSP contribution room, you can ask your employer to pay some or all of the bonus directly into your RRSP instead of to you in cash.
When an employer does this, they’re allowed to skip the income-tax withholding on that portion (the contribution cancels out the tax). So instead of getting roughly two-thirds of the bonus in cash now and reconciling later, the full amount goes to work in your RRSP immediately, untaxed for now. You’ll pay tax on it eventually when you withdraw in retirement — ideally at a lower rate.
Not every employer offers this, and you need the room to do it, but it’s worth an email to payroll before bonus season. CPP and EI may still apply, but the income-tax withholding is the big piece, and this sidesteps it cleanly.
Bottom line
Your bonus is not taxed at a higher rate. It’s taxed at your marginal rate, the same as any other dollar you earn. The reason the cheque looks brutal is the bonus method, which withholds as if the one-time payment repeated all year — and the over-withholding comes back as a refund at tax time. If you’ve got RRSP room, routing the bonus straight into your RRSP skips the withholding altogether. The bonus was always yours; the timing of the tax is the only thing in play.
Sources
- Bonus and irregular-payment withholding (the “bonus method”). CRA — Bonuses, retroactive pay increases or irregular amounts; CRA T4127 Payroll Deductions Formulas (2026).
- 2026 CPP and EI employee maximums ($4,230.45 CPP; $1,123.07 EI). CRA — CPP contribution rates and maximums and the CRA EI premium-rate page.
- Employer RRSP contributions and reduced withholding at source. CRA — Reducing tax deductions at source / employer RRSP contributions.
All sources accessed 2026-06-08. Withholding rules and contribution maximums change yearly; confirm against canada.ca before acting.
Educational only, not financial or tax advice. Your employer’s payroll setup and your own contribution room change the details. See the disclaimer for the full version.