Cass County property tax is billed each year by the County Collector, due by December 31, and calculated by applying local levies to a percentage of your property’s market value set by the County Assessor. Pay late and an 18 percent annual penalty starts accruing on January 1. The county offers several ways to pay, and Missouri law gives you credits, exemptions, and a formal appeal process if your assessment looks wrong.
How Your Bill Is Calculated
You don’t pay tax on your property’s full market value. Missouri converts market value into an “assessed value” using a fixed percentage, and the combined levy from the county, school district, city, and other taxing authorities is applied to that smaller number.
- Residential real property: 19 percent of market value
- Agricultural and horticultural land: 12 percent of productive or market value
- Commercial and all other real property: 32 percent of market value
- Most personal property: 33.33 percent of market value
- Livestock, farm machinery, and poultry: 12 percent of market value
- Grain and unmanufactured crops: 0.5 percent of market value
A home appraised at $250,000, for example, has an assessed value of $47,500. If the combined levy totals $6.00 per $100 of assessed value, the annual tax bill works out to $2,850. Your tax statement breaks each district’s levy out separately so you can see where the money goes.1Missouri Revisor of Statutes. Missouri Code 137.115 – Assessment Percentages for Real and Personal Property
Real property is reassessed every odd-numbered year, and the same value carries into the following even-numbered year unless new construction or improvements change the property. Personal property is assessed fresh every January 1.2Missouri State Tax Commission. State Tax Commission Definitions
How to Pay
The Cass County Collector’s office accepts payment several ways. Mail a check or money order to 2725 Cantrell Road, Harrisonville, MO 64701, drop payment in the secure box at the courthouse, or pay electronically through the Collector’s online portal.3Cass County, MO – Official Website. Collector Credit card payments carry a 2.4 percent convenience fee; debit cards are charged 2.0 percent.4Cass County, MO – Official Website. Methods of Payment
Taxes are due upon receipt of your bill but no later than December 31. A payment postmarked or submitted online by that date counts as timely. After December 31, the account is delinquent and penalties start right away. Keep your receipt. You’ll need it for vehicle registration renewals and real estate closings, and the county’s online records can take a few business days to update.
If a Lender Pays Through Escrow
If you have a mortgage, your servicer most likely collects tax funds monthly and pays the county directly. Federal rules require the servicer to disburse those funds in time to avoid penalties on your behalf.5Consumer Financial Protection Bureau. 1024.17 Escrow Accounts Still, check your annual escrow analysis against the Collector’s bill to confirm the amounts match. If you refinance or pay off the mortgage mid-year, you may become responsible for paying the tax yourself; the county doesn’t automatically know your escrow situation changed.
Personal Property Declarations
Anyone who owns tangible personal property in Cass County on January 1 is responsible for that year’s tax on it, even if they sell the item the next day.6Missouri Revisor of Statutes. Missouri Revised Statutes 137.075 – What Property Liable for Taxes You must file a declaration with the County Assessor by March 1, listing everything you owned on that date: vehicles, trailers, boats, farm equipment, and business assets.
Miss the March 1 deadline and the penalty runs from $15 to $105, scaled to your assessed value. Filing before May 1 waives the penalty. The assessor also waives it for military members stationed outside the state, for taxpayers who filed on time but in the wrong county, and in cases where the county caused the delay.
Credits and Exemptions
Missouri Property Tax Credit (Circuit Breaker)
The state’s Property Tax Credit refunds part of the property tax or rent paid by eligible seniors and fully disabled residents. To qualify, you must be at least 65 or have a 100 percent disability, and meet the income limits. For homeowners who owned and occupied their residence all year, the cap is $30,000 for a single filer or $34,000 for a married couple filing combined. Renters and part-year owners face lower thresholds of $27,200 and $29,200.7Missouri Department of Revenue. Property Tax Credit FAQs The maximum credit is $1,100 for homeowners and $750 for renters. File this claim with the Missouri Department of Revenue, not the county.8Missouri Department of Revenue. Property Tax Credit
Senior Property Tax Freeze
Missouri law allows counties to offer a credit that effectively freezes your tax at its base-year level, so rising values don’t push the bill up. Eligibility requires being at least 62, a Missouri resident, owner-occupant of the home as a primary residence, and current on county taxes.9Missouri Revisor of Statutes. Missouri Code 137.1050 – Homestead Property Tax Credit, Persons 62 or Older
The program is not automatic statewide. Each county must opt in through a local ordinance or voter referendum. Contact the Cass County Collector’s office or check the county website to confirm whether Cass County currently offers the credit before counting on it.
Disabled Veterans and Former POWs
Veterans with a 100 percent service-connected disability rating from the VA qualify for the Circuit Breaker credit above, subject to its income limits. Former prisoners of war who also carry a 100 percent total service-connected disability rating are eligible for a complete property tax exemption on their homestead. Missouri does not currently offer a partial exemption for veterans with ratings below 100 percent.
What Happens If You Don’t Pay
Once your account is delinquent after December 31, Missouri law imposes an 18 percent annual penalty on the unpaid balance. If you pay before the property reaches a tax sale, that penalty is capped at 2 percent per month.10Missouri Revisor of Statutes. Missouri Code 140.100 – Penalty on Delinquent Taxes Paying a few months late costs far less than letting the debt roll into a sale.
If taxes stay unpaid, the collector offers the property at an annual tax sale. When no bid at two consecutive sales covers the delinquent taxes, interest, penalties, and costs, the collector holds a third offering and sells to the highest qualified bidder. The buyer must bid at least the total delinquent amount, and the original owner has 90 days to redeem the property by paying everything owed. After a third offering with no sale, the collector keeps advertising the property every 30 days, and purchases at those later sales carry no redemption period. The buyer receives an immediate deed.11Missouri Revisor of Statutes. Missouri Code 140.250 – Delinquent Tax Sales
If you’re struggling to pay, contact the Collector’s office early. Paying even a portion of the delinquent balance before a sale keeps the 2 percent monthly cap in place and buys time.
How to Appeal Your Assessment
If you believe the assessor overvalued your property, Missouri gives you a three-step process. Appeals are most common after a reassessment year, but you can appeal any year if you have evidence the number is wrong.
Informal Review at the Assessor’s Office
Start with the Assessor. After you receive a Notice of Increase, bring documentation: a recent independent appraisal, sale prices of comparable nearby homes, or photographs of damage or deferred maintenance the assessor may not have seen. Many disputes are resolved here with a straightforward adjustment. A professional appraisal typically costs $400 to $1,400 depending on the property, and the savings on an inflated assessment can quickly cover that.
Board of Equalization
If the informal conversation doesn’t resolve things, file a formal appeal with the Cass County Board of Equalization. You present evidence at a hearing and the assessor defends the valuation. Success depends on showing the assessment is factually inaccurate or out of line with comparable properties. Comparable-sales data carries the most weight; personal opinions about value carry almost none.
Missouri State Tax Commission
If the Board of Equalization upholds the original value, you can appeal to the Missouri State Tax Commission. The appeal must be filed by September 30 of the assessment year or within 30 days of the board’s decision, whichever is later.12Missouri Revisor of Statutes. Missouri Code 138.430 – Right to Appeal, Procedure The Commission has no authority to extend these deadlines for any reason, so mark your calendar.13Missouri State Tax Commission. File An Appeal This stage is more formal and may warrant hiring a property tax attorney or professional representative.
Federal Deduction for the Property Taxes You Pay
If you itemize on your federal return, the property taxes you paid in Cass County are deductible. For the 2026 tax year, the state and local tax (SALT) deduction cap is $40,400 for most filing statuses, or $20,200 for married filing separately. The cap covers your combined state income taxes (or sales taxes), real property taxes, and personal property taxes.14Internal Revenue Service. Real Estate Taxes, Mortgage Interest, Points, Other Property Expenses If your adjusted gross income exceeds $505,000, the cap phases down but won’t drop below $10,000. Special assessments for local improvements that increase your property’s value, like new sidewalks or sewer lines, are not deductible as property taxes, and neither are flat service fees for trash collection or similar utilities even when they appear on the same bill.