Quick answer: Overtime pay is taxable employment income. Your employer normally deducts income tax, Canada Pension Plan (CPP) contributions and Employment Insurance (EI) premiums from it. There is no separate permanent “overtime tax rate.” The payroll method depends on when the overtime is paid. See the CRA’s overtime payroll rules.
What this means: If overtime is paid with the regular wages for the same pay period, payroll adds the amounts together and calculates deductions on the total. If it is paid in a later pay period, CRA tells employers to use the bonus or irregular-payment method. A large deduction on one paycheque is not, by itself, your final tax bill for the year.
What to do next: Compare the overtime hours and gross amount on your pay stub with your employer’s records. Check whether it was paid in the same pay period or later. If the calculation still looks wrong, ask payroll to explain which CRA method it used.
Is overtime taxed differently from ordinary wages?
No special tax category turns overtime into a permanently higher-taxed kind of income. The CRA treats overtime pay as employment income. Employers must make the applicable CPP, EI and income-tax deductions. What may differ is the payroll withholding calculation on a particular cheque.
Your final income tax is worked out on your annual return using your total taxable income, deductions and credits. Payroll deductions are amounts paid toward that tax during the year. That is why a high-looking deduction on one pay stub does not tell you exactly how much tax you will owe or get back when you file.
Overtime paid in the same pay period
When the overtime is earned and paid in the same pay period, CRA instructs the employer to add it to regular pay and calculate deductions on the combined amount in the usual way.
For example, suppose your regular gross pay for one period is $1,000 and overtime adds $200. Gross pay for that period is $1,200. Payroll uses the relevant deduction method for the combined pay. The $200 is not separately assigned a made-up flat “overtime tax.”
The actual amounts withheld depend on the pay period, province or territory of employment, payroll details and your tax-credit information. This example shows the gross-pay step only; it does not predict your take-home pay.
Overtime paid in a later pay period
Sometimes overtime is approved or processed after the pay period in which you worked it. The CRA instructs employers to treat overtime paid in a later pay period as a bonus or irregular amount when calculating deductions. That is a withholding method, not a rule that all overtime is taxed at a permanently different rate.
Your pay stub may therefore look different from one where the same overtime was paid alongside the regular wages. The payroll office should be able to tell you which period the overtime relates to and how it was processed.
Why might the deduction look high?
A bigger paycheque can produce a bigger income-tax deduction. Some payroll methods estimate deductions using the pay amount in that period; the irregular-payment method treats an additional amount differently from normal wages. CPP contributions and EI premiums can also be deducted where applicable. Looking only at the net deposit hides these separate lines.
Check gross regular pay, gross overtime, income tax, CPP or QPP, EI and any other deductions shown on your pay stub. Do not assume that every decrease in take-home pay is income tax. Quebec payroll can involve Quebec Pension Plan (QPP) and provincial deductions, so the exact lines may differ.
Does more overtime mean you lose money to tax?
Overtime adds employment income. A higher amount of income tax withheld on the overtime cheque does not mean the entire overtime amount has disappeared. Compare the change in gross pay with the change in net pay and look at each deduction line.
It is possible for extra income to affect your final tax bracket or income-tested benefits, depending on your full-year circumstances. This article cannot calculate that effect from one paycheque. Avoid any claim that overtime is “always worth it” or “never worth it” based solely on a payroll withholding percentage.
What appears on your T4 and tax return?
Overtime is part of employment income. Employment income is generally shown in box 14 of your T4 and reported at line 10100 of your income tax and benefit return. The T4 also reports income tax deducted during the year. Your return reconciles those deductions with the tax calculation for your full year.
You normally do not enter each overtime shift separately on the return. Keep your pay stubs if you need to check a T4 amount or ask your employer about a discrepancy.
How to check a pay stub that seems wrong
- Confirm the overtime hours, rate of pay and gross overtime amount with your time records.
- Find out whether the overtime was paid in the period it was earned or in a later one.
- Read the pay-stub lines separately: income tax is not the same as CPP, QPP, EI or a workplace deduction.
- Ask payroll which CRA method it used if the result still does not make sense. Provide the pay-period dates and the relevant pay stub.
- For an employer-side estimate, the CRA Payroll Deductions Online Calculator can help check deductions when the correct inputs are known.
If the problem is the overtime pay rate or eligibility, rather than tax withholding, that is a different question. Provincial or federal employment-standards rules may apply depending on your job. This page does not determine your legal overtime rate.
Common mistakes to avoid
- Calling all deductions “tax”: Your net pay can also reflect CPP, EI and other items.
- Assuming one pay stub predicts the whole year: The final tax calculation uses annual income and relevant credits and deductions.
- Using a universal overtime-tax percentage: CRA distinguishes payment timing and payroll method; it does not publish one permanent overtime rate for everyone.
- Confusing pay entitlement with withholding: Whether your employer paid the right overtime rate is separate from how deductions were calculated.
Frequently asked questions
- Is overtime taxed at a higher rate in Canada?
- There is no separate permanent overtime tax rate. More income on a paycheque can lead to more withholding, but final income tax is calculated on the year as a whole.
- Why was so much deducted from my overtime pay?
- Check whether income tax, CPP or QPP, EI and other deductions are being counted together. Payroll may use the combined-pay method or, for overtime paid later, the bonus/irregular-payment method.
- What if overtime is paid on a later cheque?
- CRA tells employers to use the bonus or irregular-payment method for overtime paid in a later pay period. Ask payroll how it was processed if the pay stub is unclear.
- Will I get the extra tax back when I file?
- Not necessarily. Your tax return compares the year’s tax calculation with amounts already deducted. A refund or balance owing depends on your full-year circumstances, not just the overtime cheque.
- Where does overtime appear on my tax return?
- It is part of employment income, generally included in box 14 of your T4 and reported at line 10100 of your return.
Related guides
If you received a separate extra payment, our guide to how bonuses are taxed explains the related payroll method. Use the CRA overtime guidance above as the authority for overtime itself.
Rules and process basis
This is a guide to the CRA’s payroll process, not individual tax advice. The $1,000-and-$200 example is fictional and includes no calculated deductions. Exact withholding and final tax depend on information not shown here, including your province or territory and tax situation.