Finance Charge
What is a finance charge?
A finance charge is the cost of borrowing or of paying late, usually interest or fees added to an unpaid balance. In a service firm, it most often appears as interest charged on overdue client invoices under the terms of the engagement letter.
Numetix is the expert-led, AI-powered, human-in-the-loop bookkeeping layer that records late charges as separate income and ties each one to the invoice terms, so overdue interest is billed consistently.
How it works on client invoices
- State the late payment terms in the engagement letter and on every invoice
- Calculate the charge from the due date using the rate stated in the agreement
- Record it separately from fees, and decide in advance when you will waive it
A worked example
The figures below are illustrative. An invoice for $10,000 is 30 days overdue, and the agreement allows interest of one percent per month on unpaid balances. The finance charge is $100, which appears as its own line on the next statement.
Common mistakes
- Charging interest that was never written into the agreement
- Applying different rates to different clients without a reason
- Ignoring state limits on interest, which an attorney can confirm
Why it matters for service firms
Finance charges can encourage on-time payment, but many firms waive them to protect relationships. Whichever approach you choose, apply it consistently and track the effect on collections with receivables aging.
Frequently asked questions
Is a finance charge the same as a late fee?
They are related but not identical. A late fee is usually a flat amount, while a finance charge is typically interest calculated on the unpaid balance over time. Your contract should say which applies.
Are there legal limits on finance charges?
Yes. Interest limits and disclosure rules vary by state and by the type of client. Have an attorney review your late payment terms before adding them to contracts.
Should a firm actually collect finance charges?
Some do, and some waive them as a goodwill step after payment. Decide your policy in advance, apply it consistently, and track whether it improves how quickly clients pay.
This page is for informational purposes only and does not constitute legal advice. Always consult a qualified attorney about your specific situation.
Related terms and guides: invoice aging, accounts receivable aging, collection letter, engagement letter, and credit memo.