Me. Rev. Stat. tit. 4, § 173-A

Costs in the amount of $25 shall be automatically taxable for the State in civil violation and traffic infraction proceedings for failure to pay a fine imposed for the commission of a civil violation or traffic infraction within 30 days of entry of judgment or within 30 days of the date fixed for a final installment payment if the fine is to be paid under a plan approved under Title 14, section 3141, subsection 4.