How are bonuses taxed in Canada?

A bonus is treated as ordinary employment income and taxed at your marginal rate. When your employer pays the bonus, they are required to withhold income tax based on a lump-sum withholding rate (not the standard payroll withholding). The lump-sum rates are: 10% on amounts up to $5,000; 20% on $5,001–$15,000; 30% on amounts over $15,000 (Quebec has different provincial rates). These are withholding rates only — your actual tax is calculated when you file your T1 return. If the withholding was too high, you receive a refund. If too low, you owe the balance.

Can I avoid paying tax on a bonus by putting it in my RRSP?

You cannot direct a bonus into your RRSP before it is paid — the employer is required to withhold tax on it. However, you can contribute the after-tax bonus (or an equivalent amount of cash you already have) to your RRSP and claim the deduction. This effectively shelters the income. For maximum impact, ensure you have RRSP contribution room. If you contribute the gross bonus amount into your RRSP (using funds from other savings to top it up), you may receive most of the withheld tax back as a refund.

What is the difference between the bonus method and the aggregation method?

Employers can use two methods to calculate withholding on a bonus. The aggregation method adds the bonus to your regular pay for the period and withholds based on that larger projected annual income — typically higher withholding. The bonus method (lump-sum rates: 10%/20%/30%) withholds based on the bonus amount alone — often lower withholding but may mean a balance owing at filing if you are in a high bracket. In practice, CRA allows employers to use either method. The final tax owed is the same either way at filing time — only the timing of payment differs.

Should I use my bonus to pay down debt or invest?

Compare the guaranteed return of debt repayment against the expected return of investing. Paying off a credit card at 20% interest is equivalent to a guaranteed 20% return — better than almost any investment. Paying off a mortgage at 5% is equivalent to a 5% guaranteed return — comparable to a GIC or bond. For high-interest debt (above ~7–8%), pay it down first. For low-rate debt, invest in RRSP or TFSA if you have room — the tax sheltering likely beats the guaranteed low-rate debt return.

What to Do When You Get a Bonus in Canada (Tax Guide 2026)

A bonus feels like found money — but the Canadian tax system ensures it is anything but. Bonuses are fully taxable employment income, and the withholding applied by your employer is often higher or lower than your actual tax rate. Knowing how the system works lets you plan around the bonus rather than being surprised at tax time.

How bonuses are taxed in Canada

A cash bonus is added to your T4 as employment income and taxed at your marginal rate — the same as your regular salary.

Employer withholding on bonuses

Your employer must withhold income tax on the bonus before paying it to you. CRA allows two methods:

Method	How It Works	Typical Result
Lump-sum (bonus) method	Withhold at fixed lump-sum rates: 10% up to $5,000; 20% on $5,001–$15,000; 30% above $15,000	Often under-withholds for high earners
Aggregation method	Add bonus to regular pay, project annual income, calculate withholding on the combined amount	More accurate but complex

These rates are withholding rates, not final tax rates. CRA reconciles the actual tax owed when you file.

Example: $15,000 bonus in Ontario at $90,000 base salary

Step	Amount
Marginal rate on bonus (federal + Ontario)	~47.97%
Tax owing on $15,000 bonus	~$7,196
Employer withholds at 30% (lump-sum method)	$4,500
Shortfall at filing	~$2,696

In this example, the employer under-withholds using the 30% lump-sum method. You would owe approximately $2,696 extra at tax time. If you were not expecting this, you would need cash on hand to pay it.

Tip: If your employer uses the lump-sum method and you are in a high bracket, consider making RRSP contributions to offset the shortfall (see Step 2 below) or requesting additional withholding.

→ See: Bonus Tax Calculator Canada | Canadian Marginal Tax Rate Calculator

Step 1: Wait for the T4 — but plan ahead

When you receive your T4 slip in February, the bonus is included on line 101 (employment income). The tax withheld is on line 437.

Planning Action	When
Estimate the tax owing or refund on the bonus	As soon as you receive it
Decide on RRSP contribution amount	Before RRSP deadline (March 3, 2026 for 2025 tax year)
Arrange funds for a balance owing if applicable	Before April 30 (avoid interest charges)

Step 2: Use an RRSP contribution to recover the withholding

The most tax-efficient use of a bonus is to contribute an equivalent amount to your RRSP if you have room. Here is why this works:

Scenario	No RRSP Contribution	RRSP Contribution
Bonus received	$15,000	$15,000
Tax withheld (30%)	$4,500	$4,500
Net bonus received	$10,500	$10,500
RRSP contribution made	—	$10,500 (from net bonus)
RRSP deduction reduces taxable income	—	$10,500
Tax refund at filing (at ~47% marginal rate)	—	~$4,935
Effective net contribution into RRSP	—	~$10,500 (and $4,935 refund to invest elsewhere)
Final tax on bonus	~$7,196 (owe ~$2,696 extra)	~$0

By contributing the net bonus to your RRSP, you recover most of the withholding tax and shelter the bonus from income tax — turning a taxable income event into a tax-deferred savings event.

If you contribute the full gross bonus amount using existing savings to top it up, you may recover essentially all of the withholding as a refund.

→ See: RRSP Guide Canada | RRSP Contribution Limit

Step 3: Decide how to allocate the after-tax bonus

If an RRSP contribution is not the right choice (no room, near retirement, low marginal rate), use this priority order:

Priority	Action	Why
1	High-interest debt (credit cards, HELOC above ~7%)	Guaranteed return equal to interest rate
2	FHSA (if eligible first-time buyer)	Tax deduction + tax-free growth
3	RRSP	Tax deduction (if marginal rate justifies it)
4	TFSA	Tax-free growth; flexible
5	Mortgage lump-sum prepayment	Most mortgages allow 10–20% prepayment annually without penalty
6	RESP	20% CESG on first $2,500/year per child
7	Non-registered investing	When all registered accounts are maxed

Debt paydown vs investing: the decision rule

Your Debt Rate	Decision
Above 7% (credit cards, unsecured loans)	Pay down debt — guaranteed return beats expected market returns
4–7% (car loan, student loan, HELOC)	Split: partial prepayment + investing
Below 4% (some mortgages, low-rate student loans)	Invest in RRSP/TFSA — expected market return likely exceeds debt rate

→ See: Should I Invest or Pay Off Debt Canada

Step 4: Consider the timing of the RRSP contribution

If your bonus comes late in the calendar year (November–December), you face an RRSP timing decision:

Timing	Tax Impact
Contribute before December 31	Deduct against the current tax year
Contribute January 1 – March 3	Deduct against either the current or prior tax year (your choice)

If your income is unusually high this year (large bonus + regular salary), contributing in December and deducting in the current year may be optimal. If you expect even higher income next year, carry the deduction forward to the higher-bracket year.

You can contribute before the RRSP deadline but choose when to claim the deduction — the deduction can always be carried forward to a year when it will save more tax. This is a legitimate and commonly used strategy.

→ See: RRSP Deduction Carry Forward

Step 5: Watch for the impact on income-tested benefits

A large bonus can push your net income above thresholds that affect certain benefits:

Benefit	Clawback Threshold (2026, approximate)
OAS	$90,997 (if 65+)
Child tax benefits (CCB)	Reduces above ~$36,500 family net income
GST/HST credit	Reduces above approximately $43,000 family net income
Canada Workers Benefit (CWB)	Phases out above ~$33,000 individual net income

An RRSP contribution can reduce your net income below these thresholds and preserve the benefits.