Late payment interest calculation scheduling

Hello SAP users,

We are in the process of implementing interest calculation on customer arrears using FINT.

In Late payment interest calculation on cleared items mentioned that "Interest run is scheduled monthly at the end of the month".

Is it common practice(or best practices) to run the interest calculation on a monthly basis?

Our user has indicated that they to want to run interest daily but then an outstanding invoice would get interest applied every day(which is not what they want)....Is there a way to not charge interest on an outstanding invoice for which interest has been applied in the last 30 days other than not to run the FINT transaction(for the 30 days)? How would the SAP system determine this?

Thanks.

Colette