If you mean adding late fees to customer statements, you’ll have to create an invoice for these to show on the transaction. This is because the data is pulled from the sales entry.
QBO can now automatically apply late charges on the invoice. All you have to do is to activate the feature.
Here’s how:
Go to the Gear icon at the top and pick Account and Settings under Your Company.
Tap the Sales menu on the left panel and mark the Pencil icon for Late fees.
Choose the type that applies to your business: Percent, Flat Fee, and Flat fee and percent.
Follow the on-screen instructions to complete the process.
Click Save and Done.
After turning on this functionality, fees will be calculated on invoices that become overdue. Please know the online program does not retroactively apply the charge.
Alternatively, manually add late fees as another line item on the transaction. Check out this article for the step by step process: Add service fees manually to invoices.