Interest on other unpaid revenues.
Section 57
SEC. 57. Interest on other unpaid revenues. — Where the amount of any other revenue due the local government, except voluntary contributions or donations, is not paid on the dale fixed in the ordinance in the contract, expressed or implied, or upon the happening of the event which gave rise to its collection, there shall be collected as part of that amount, an interest thereon at the rate of one-half percent a month from the due date until it is paid.