Interest per annum at four percent greater than the statutory rate set forth in section 5-12-101, C.R.S., on any arrearages and child support debt due and owing may be compounded monthly and may be collected by the judgment creditor; however, such interest may be waived by the judgment creditor, and such creditor shall not be required to maintain interest balance due accounts.
C.R.S. § 14-14-106
For the statutory rate of interest, see § 5-12-102.