Ark. Code Ann. § 14-92-229: Interest on assessments

The assessment of the benefits shall bear interest at a rate or rates from the time it is equalized, not to exceed that required to service the bonds, or at the maximum interest rate allowed by law if no bonds issue. However, the interest need not be calculated until it is necessary to do so to avoid exceeding the total amount of benefits and interest, or the interest may be first collected.