How to Appeal Your Property Taxes in Missouri

How to appeal your property taxes in Missouri

To appeal your property taxes in Missouri, file a formal appeal of your property's assessed value with your county Board of Equalization by the deadline printed on your assessment (change-of-value) notice, present evidence that the assessor's market value is too high, and if needed escalate to the Missouri State Tax Commission. You are appealing the valuation of your property, not the tax bill itself — if the value comes down, the tax follows.

Missouri assessments are handled at the county level, so exact deadlines, forms, and hearing procedures vary by county. Always confirm the specifics on your own assessment notice or your county assessor's website before acting. The general path below applies statewide.

Who assesses your property in Missouri

Each county has a County Assessor (in the City of St. Louis, an appointed assessor) responsible for placing a value on real property. Missouri typically reassesses real property in a set cycle, and property owners receive a notice when the assessed value changes. That notice is the trigger for the appeal process — it usually lists the new value and the window you have to challenge it.

Missouri taxes property based on an assessed value, which is a portion of a property's estimated market value, and the ratio differs by property class (for example, residential, agricultural, and commercial are treated differently). Because these ratios and local tax rates change and vary, do not rely on a remembered percentage — read the class and values shown on your own notice.

The Missouri appeal ladder, step by step

Missouri gives property owners several escalating levels of review. Most homeowners resolve the issue at the first or second step.

Step 1 — Informal review with the assessor

Before any formal hearing, contact the assessor's office to discuss the value. Many disputes are corrected here when you point out factual errors (wrong square footage, wrong lot size, a finished-basement or bathroom count that's off, condition problems). This step is usually quick and does not require a formal filing.

Step 2 — County Board of Equalization (BOE)

If the informal review doesn't resolve it, file a formal appeal with your County Board of Equalization. This is the primary local appeal body. You typically must file by a deadline tied to your assessment notice, then attend a hearing (in person, by phone, or in writing depending on the county) and present your evidence.

Step 3 — Missouri State Tax Commission (STC)

If you disagree with the Board of Equalization's decision, you can appeal to the Missouri State Tax Commission, the statewide body that reviews assessment disputes. This is a more formal proceeding, and there is a filing deadline after the local board's decision.

Step 4 — Circuit court (judicial review)

Decisions of the State Tax Commission can generally be taken to circuit court. Most homeowners never reach this stage, and it often warrants professional or legal help.

Steps to file your Missouri appeal (checklist)

1. Read your assessment notice carefully. Note the assessed value, the property class, and the appeal deadline. The deadline is the single most important thing — missing it usually ends the appeal for that cycle.
2. Decide what you're arguing. The strongest arguments are that the market value is too high, or that your property is assessed inconsistently compared with similar properties.
3. Gather evidence. Pull comparable recent sales of similar nearby homes, a recent appraisal if you have one, photos of defects or needed repairs, repair estimates, and any listing or purchase price if you bought recently.
4. Check the assessor's record for errors. Confirm square footage, lot size, bedroom/bath counts, year built, and condition. A factual error is often the easiest win.
5. Try the informal review first. Call or visit the assessor's office and lay out your evidence.
6. File the formal BOE appeal by the deadline if the informal step doesn't resolve it. Use the county's form or process.
7. Prepare a short, organized presentation for the hearing: your requested value, three to five strong comps, and any documented defects.
8. Escalate to the State Tax Commission if the Board's result isn't acceptable, within the stated window.
9. Keep copies of everything and note every deadline in writing.

What makes a strong Missouri appeal

The burden is on you to show the assessor's value is wrong. Evidence that tends to persuade:

• Comparable sales (comps): recent arm's-length sales of similar homes near yours, ideally close to the assessment date.
• A professional appraisal: an independent appraisal near the valuation date carries weight.
• Documented condition issues: foundation, roof, water damage, or deferred maintenance, backed by photos and contractor estimates.
• Factual corrections: proof the assessor's record overstates size or features.
• Uniformity evidence: showing that similar neighboring properties are assessed lower.

Opinions ("my taxes went up too much") without value evidence rarely succeed. Focus on what the property is worth, not on the size of the tax increase.

Common mistakes to avoid

• Missing the deadline on your notice. This is the most frequent reason appeals fail.
• Arguing the tax bill instead of the value. You appeal the assessed value; the levy is set separately by taxing districts.
• Bringing no comparable-sales evidence.
• Using comps that aren't truly comparable (different size, age, condition, or neighborhood).
• Assuming the informal talk preserved your rights — if it doesn't resolve things, you still must file the formal appeal on time.

When to get help

For a typical single-family home, many owners handle the Board of Equalization step themselves. Consider a licensed appraiser, a property-tax consultant, or an attorney if the property is high-value or commercial, if the numbers are complex, or if you intend to appeal to the State Tax Commission or beyond.

The bottom line: verify the deadline on your own notice, build a value-based evidence file, start informally with the assessor, and escalate through the Board of Equalization and, if necessary, the State Tax Commission.