How to create late fees (AR)

I am told we want to start charging a late fee to our customers, if they pay late of course.

I see almost no discussion of this here on the site, nor a mention in the user guides (not for AR, anyway).

How could we do this?

Try searching for Finance Charge

There it is. It’s always a terminology thing.

Not a late fee, a late charge.

Thank you. I’m off to the races now.