An overtime calculator helps you estimate your overtime earnings based on your hourly wage, total hours worked, and your province’s overtime rules. Whether you are picking up extra shifts or tracking your weekly pay, this tool shows your regular pay, overtime pay, total weekly earnings, and effective hourly rate. Whether overtime is owed at all, and from which hour, is set by provincial law; your other rights at work are in the workplace rights and employee benefits guide.
How this overtime calculator works
Enter your regular hourly wage, standard weekly hours, total hours worked, and overtime multiplier. Select your province to see the standard overtime threshold, or set custom hours. The calculator shows your regular pay, overtime pay, total weekly pay, and effective hourly rate.
Overtime rules by province
Each province sets its own overtime threshold (daily, weekly or both), and some exempt whole occupations; the calculator pre-fills the usual weekly threshold for the province you pick. The full rules, exemptions and banked-time arrangements are on overtime rules by province, and if your employer isn’t paying overtime you’re owed, see unpaid overtime.
New Brunswick is the one province where the minimum overtime rate is tied to the minimum wage rather than to your own wage. The calculator applies the multiplier to the wage you enter, so for New Brunswick it can show more than the legal minimum.
How overtime pay is calculated step by step
Example: Maria earns $28/hour in Ontario, works 52 hours this week.
- Regular hours: 44 hours (Ontario threshold)
- Overtime hours: 52 - 44 = 8 hours
- Regular pay: 44 × $28 = $1,232
- OT rate: $28 × 1.5 = $42/hour
- OT pay: 8 × $42 = $336
- Total gross pay: $1,232 + $336 = $1,568
- Effective hourly rate: $1,568 ÷ 52 = $30.15/hour
Overtime and taxes
While overtime is not taxed at a higher rate than regular income, your employer’s payroll system may withhold more tax from overtime-heavy paycheques. This happens because the system projects your pay period earnings across the full year and withholds accordingly.
What this means for you:
- Your overtime paycheque may appear to be taxed heavily
- At tax time, if your total annual income is lower than the projected amount, you may receive a refund
- Use our withholding tax calculator to estimate what a paycheque looks like with and without overtime
Keeping track of overtime
A personal log of hours, kept separately from the employer’s system, is the evidence that matters if pay is ever disputed. Banked time off instead of overtime pay is allowed in several provinces only under a written agreement, and some jobs are exempt from overtime altogether, both covered on the overtime rules page. Because overtime isn’t guaranteed, budgets often count only regular pay and treat overtime as extra.
Converting overtime into annual impact
| Weekly OT Hours | OT Rate | Extra Weekly | Extra Monthly | Extra Annually |
|---|---|---|---|---|
| 2 hours | $37.50 | $75 | $325 | $3,900 |
| 5 hours | $37.50 | $188 | $813 | $9,750 |
| 10 hours | $37.50 | $375 | $1,625 | $19,500 |
Based on $25/hour base wage at 1.5× overtime; monthly figures are 52 weeks divided by 12.
Regular overtime can add up over a year; extra earnings can go toward debt payoff, boost TFSA contributions, or build your emergency fund.
Related calculators
- Salary Calculator: Convert hourly wages to annual salary with tax deductions
- Raise Calculator: See how a raise affects your take-home pay
- Income Tax Calculator: Calculate federal and provincial tax on your total earnings
- Withholding Tax Calculator: Estimate tax withheld from your paycheque
- Budget Calculator: Plan how to allocate overtime earnings