Mo. Sup. Ct. Op. R 21.09
All courts shall utilize the approved statewide case management system and shall establish payment plan policies and procedures consistent with Rule 37.65 and sections 543.270, 558.004.4, and 588.006, RSMo. Prior to entering an order for a payment plan, when a fine, fee, or cost is assessed, or thereafter any time a fine, fee, or cost is due, if the defendant/debtor states he or she is unable to pay the amount then due, the judge shall inquire as to the defendant's/debtor's ability to pay. If the defendant/debtor has the ability to pay but is unable to pay when assessed or due or the defendant/debtor has no ability to pay, the court shall comply with the procedures set forth in Rule 37.65. Any payment plan, policy, or procedure established by the court should state the plan's effective date, the minimum payment due at case disposition, the minimum monthly payment amount, the means by which the court shall obtain the debtor's social security number pursuant to Court Operating Rule 4, and the collection procedure the court will utilize if there is a default in the payment.
Mo. Sup. Ct. Op. R 21.09