Late payment calculator
Calculate simple late fees based on overdue days and your stated rate.
Estimated late fee: 15.00
Simplified estimate. Use terms stated on your invoice.
How it works
Late fee = Overdue amount × Monthly rate ÷ 100 × Days overdue ÷ 30
Enter the overdue amount
Use the unpaid balance on the invoice.
Enter your monthly rate
Use the late fee rate stated in your payment terms.
Enter days overdue
Count from the due date to today.
Frequently asked questions
Quick answers about this calculator.
Can I charge a late fee?
Only if it is allowed where you work and was stated in your terms before the work started. Some countries set statutory rates.
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