Iowa Code § 909.5: Nonpayment of fines and court costs — contempt.

A person who is able to pay a fine, court-imposed court costs for a criminal proceeding, or both, or an installment of the fine or the court-imposed court costs, or both, and who refuses to do so, or who fails to make a good faith effort to pay the fine, court costs, or both, or any installment thereof, shall be held in contempt of court.