Late Payment Fee Calculator
Work out how much to charge when a client pays late. Enter the invoice amount, your annual interest rate, and days overdue to get the daily fee, total fee, and new total amount owed.
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How it works
The daily interest rate is the annual rate divided by 365. The daily fee is the invoice amount × daily rate. Total fee is daily fee × days overdue.
The new total is the original invoice amount plus the total late fee. Always state your late payment policy (e.g. 1.5% per month) on your invoices and in your terms so clients know what to expect.