The text comes in: "Can anyone pick up tonight? Time and a half." It's tempting. But how much of that overtime do you actually keep, and what does it cost you in sleep, health and time? Here's how to decide with real numbers.
Step 1: Calculate the gross pay for the shift
Overtime is usually paid at 1.5 times your base rate (some contracts pay double time after a certain number of hours). Many nurses also earn shift premiums on top.
Example: base rate $45/hour, 12-hour night shift, all hours at time and a half, plus a $2.50 night premium:
- Overtime: 12 × $45 × 1.5 = $810
- Night premium: 12 × $2.50 = $30
- Gross for the shift: $840
Check your own numbers in the nurse shift pay calculator. Put the shift's hours in the overtime field and add any premiums.
Step 2: Apply your marginal tax rate, not your average
Overtime is taxed at your marginal rate: the rate on your last dollars of income. For a full-time nurse, that's often 30% to 45% once you combine federal and provincial (or state) income tax and payroll contributions.
Continuing the example with a 35% combined marginal rate:
- $840 × (1 − 0.35) = about $546 take-home
In Canada, CPP and EI may already be maxed out later in the year, which can leave a bit more in your pocket. In the US, part of your overtime may qualify for the new federal overtime deduction, which lowers your federal income tax when you file.
Step 3: Subtract the hidden costs
Extra shifts come with extra spending that's easy to overlook:
- Parking and gas
- Meals bought at work or takeout because you're too tired to cook
- Extra childcare or pet care
- Recovery days where you're too exhausted to do much
If those cost $60, your real gain from the example shift is closer to $486.
Step 4: Work out your effective hourly rate
Divide what you keep by the hours the shift actually costs you, including commute time:
$486 ÷ 13 hours = about $37 an hour
That's still meaningful money. The question is whether it's worth it to you right now.
When overtime is worth it
- You're working toward a specific goal: an emergency fund, a debt payoff or a down payment.
- The extra money is already assigned before it arrives (see our shift-work budgeting guide).
- You're rested and it won't harm your health or patient safety.
- It's a limited stretch, not a permanent way to cover regular bills.
When it might not be
- You need overtime just to pay basic expenses every month. That's a budget problem overtime can't fix long-term.
- You're already exhausted or making mistakes.
- The extra money tends to disappear without a plan.
The bottom line
Overtime can speed up your goals, but only when you know what you actually keep and you've decided where it goes. Run the numbers first, then say yes or no with confidence.
Run your own numbers: the free Nurse Shift Pay Calculator shows your gross pay for any mix of overtime, nights and weekends.
This article is for general education and isn't tax or financial advice. Tax rates depend on your income, province or state and personal situation.