(a) A late payment charge shall be imposed on any manufacturer or importer who fails to make timely remittance to the Board of the total assessments for which such manufacturer or importer is liable. The late payment shall be imposed on any assessments not received within 60 calendar days of the date they are due. This one-time late payment charge shall be 10 percent of the assessments due before interest charges have accrued.

(b) In addition to the late payment charge, 11⁄2 percent per month interest on the outstanding balance, including any late payment charge and accrued interest, will be added to any accounts for which payment has not been received by the Board within 60 calendar days after the assessments are due. Such interest will continue to accrue monthly until the outstanding balance is paid to the Board.