Modifies provisions relating to property tax payments

This bill allows Missouri counties to let property owners pay real and personal property taxes in installments (annual, semiannual, or quarterly) instead of a single annual payment. Taxpayers pay based on the previous year's tax amount, with year-end adjustments: they pay extra if underpaid or receive a refund for overpayments (without interest). Counties must refund overpayments once per year and can charge interest only if payments are missed. It directly affects all property taxpayers in counties adopting this system, excluding financial institutions using escrow accounts for tax payments.