Back Pay Calculator
Back pay is pay that was earned but not paid on time, such as a raise that should have started earlier. This does the arithmetic for a simple case.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Subtract the rate you were paid from the rate you should have had. Multiply that difference by the hours per week, then by the number of weeks owed.
This is plain arithmetic only. It does not include overtime, taxes, interest or any legal rules, which can change the amount.
Worked example
With a difference of $3.00 an hour, for 40 hours a week over 10 weeks, the back pay comes to $1,200.00.
Questions
Does this include overtime?
No. Overtime is usually paid at a higher rate, so add it separately if it applies.
Is this legal advice?
No. It shows only the arithmetic. For questions about what you are owed, talk to your employer's payroll team or a qualified adviser.
Does it include taxes or interest?
No. The figure is before tax and does not add interest for late payment.
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