Missouri Property Tax Appeal Guide

What This Data Tells Us About Appeals in Missouri

In Missouri, property tax appeals are filed with the County Board of Equalization / State Tax Commission. The typical window is July 10 deadline for filing with the Board of Equalization (odd-numbered reassessment years), with the deadline most commonly falling in July. Filing fees reported for this state are $0 for Board; $25 for State Tax Commission, and Lincoln Institute research plus state-reported data suggest roughly 47% of appeals result in some reduction when supported by comparable sales or documented errors.

Missouri reassesses every odd year. The STC appeal is a de novo review — you can present new evidence. Appeals are driven by the gap between a parcel's assessed value and its actual market value — the calculator below turns that gap into an annualized dollar figure at your effective tax rate. The strongest evidence is three to five arms-length comparable sales from the past six to twelve months, plus documentation of any factual errors in the assessor's record (square footage, bedroom count, finished-basement status).

This guide is for informational purposes only and is not legal or tax advice. Deadlines, filing fees, success rates, and procedures vary by county within Missouri and can change year to year. Always verify the current rules with your local assessor's office — or a licensed attorney or tax professional — before filing. Source: Missouri State Tax Commission.