Late fee
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See exactly what an overdue invoice is now worth — enter the amount, your late-fee rate and how many days late it is to get the fee and total owed.
A late fee only helps if the client agreed to it before the invoice went overdue. Here's the maths behind the number.
The most common freelance approach — e.g. 1.5% per month. The fee is the rate × the fraction of the month overdue (days ÷ 30).
Some contracts state an annual interest rate; here the daily portion is rate ÷ 365 × days overdue.
A single fixed charge added once the invoice is late, regardless of how long — simple and predictable.
Add a late-fee line to a fresh invoice and send it with a payment link and reminders — free.