In the event that any balance remains unpaid at the expiration of the scheduled maturity date of a loan, licensees may continue to charge interest on the unpaid balance at the rate provided for in s. 516.031(1) for a period not to exceed 12 months. Thereafter, the interest shall not exceed the permissible rate of interest provided by chapter 687. When advances are made pursuant to a line of credit, a licensee may charge interest on the unpaid balance at the rate provided for in s. 516.031(1) for the period a balance remains unpaid.
Fla. Stat. § 516.035