Charge a late fee

Create a late fee surcharge and add it to a past due invoice.

You can add a late fee to an unpaid invoice with a surcharge. Make sure your late fees follow your customer agreement and any rules that apply in your state.

Create a late fee surcharge

1. Go to Pricing, then the Discounts & Surcharges tab.
2. Create a new surcharge. Give it a clear name, such as "Late fee".
3. Choose a flat dollar amount or a percentage, and enter the amount.
4. Save it.

Add the late fee to an invoice

1. Go to Invoices and filter for invoices with the status Past Due.
2. Open the actions menu on the invoice and select Edit.
3. Under the subtotal, select Add Discount or Surcharge and choose your late fee.
4. Save your changes. Your customer is notified that the invoice was updated.

You can edit an invoice only until your customer's payment starts processing. If your customer has a scheduled payment, they'll need to approve the change; see Change an invoice that has a scheduled payment.

Need help? Email support@finli.com.

Updated October 22, 2026