Question 1

What is a standard invoice late fee?

Accepted Answer

A standard late payment fee is 1.5% per month (18% APR) on the outstanding balance, which is the most commonly cited rate. Some businesses charge a flat fee ($25–$50) for amounts under $1,000 and a percentage for larger invoices. Always state your late fee terms on the invoice and in your contract before work begins.

Question 2

Are invoice late fees legally enforceable?

Accepted Answer

Late fees are enforceable when: they are disclosed in writing before services are rendered (on your contract or proposal), the rate is reasonable (most states cap at 18–24% APR), and you apply them consistently. Surprise fees on invoices — especially at rates not previously disclosed — may not hold up in disputes.

Question 3

How do I get clients to pay invoices on time?

Accepted Answer

Best practices: require a 25–50% deposit upfront, use net-15 terms instead of net-30, send invoices immediately upon completion, auto-send payment reminders at 7 and 14 days, and offer a 2% discount for payment within 10 days (2/10 net 30). The fastest way to improve collections is to require payment at job completion for smaller jobs.

Invoice Late Fee Calculator

Your Numbers

Results