Find Platte County Property Tax Records
Platte County property tax records are managed by the assessor and collector at the county offices in Platte City. This growing county in the Kansas City metro area uses the Beacon GIS system for property mapping and offers several online tools for searching tax data. You can look up your property tax records on the county website, file your personal property assessment online, or visit the office in person. Platte County has seen significant property value changes in recent years, making it important to stay on top of your assessment and tax records.
Platte County Tax Quick Facts
Platte County Property Tax Assessor
The Platte County Assessor handles all property valuations in the county. The office offers DMV tax waiver lookups, online filing, property searches, and new resident information. You can file your personal property assessment online through the assessor's portal. Important dates, FAQs, and filing instructions are all on the website.
In 2025, Platte County reached a negotiated agreement with the Missouri State Tax Commission on residential property values. The STC originally ordered a 15% increase in assessed values. After negotiation, a compromise set the increase at 6.835% over 2024 assessed values. This reduced the financial impact on Platte County taxpayers compared to the original order. The assessor's office worked with the commission to reach this middle ground.
Assessment rates follow RSMo 137.115. Residential property is assessed at 19% of market value. Agricultural land is at 12% of production value. Commercial property is at 32% of true value. Personal property goes at 33 1/3%. Real estate is reassessed every two years in odd-numbered years.
Platte County Property Records Search
Platte County uses the Beacon GIS system from Schneider Corp for property mapping. The system gives you geographic and property record information including aerial photography and parcel data. You can search by address, owner name, or parcel number. Maps from this system are compiled from official records, but they do not represent a survey.
The Platte County Real Property page has additional search tools and property information. You can view assessment details, check ownership records, and get parcel-level data. This is a helpful tool for anyone doing a title search or looking into the tax history of a property in Platte County. Personal property declarations must be filed by March 1 each year, with penalties from $15 to $105 for late filing per RSMo 137.280.
Platte County Tax Collector
The Platte County Collector handles all property tax collection. Tax bills go out in the fall and are due by December 31. Payments postmarked by that date are on time. Late payments start interest on January 1 under RSMo 139.031. You can pay in person, by mail, or through online payment options.
The Platte County official website has links to all county services including the collector. The county runs an annual tax sale for delinquent properties under Chapter 140 of the Missouri Revised Statutes. Properties with two or more years of unpaid taxes can go to auction. Because Platte County is part of the Kansas City metro area, property values can change significantly between reassessment years, which affects tax bills.
Note: Parts of Kansas City fall within Platte County, so some Kansas City residents pay their property taxes through the Platte County Collector.
Tax Credits and Appeals in Platte County
Missouri's Property Tax Credit helps seniors and 100% disabled individuals. The max credit is $1,100 for homeowners and $750 for renters. File through the Missouri Department of Revenue using your paid tax receipt from the Platte County Collector.
To appeal your assessment, start with an informal review at the assessor's office. File with the Board of Equalization before the second Monday in July. If not resolved, appeal to the State Tax Commission by September 30. This is free for residential properties. Given the 2025 value increases in Platte County, some residents may want to review their assessments closely and consider filing if the values seem too high. The Missouri Association of Counties lists contact details for all Platte County offices.
Platte County Tax Levy Details
The county clerk takes your assessed value and applies local tax levy rates to get the total on your bill. Platte County has multiple taxing districts. School districts, fire districts, road districts, and cities each set their own levy rates annually. Because Platte County sits in the Kansas City metro area, some parcels fall within Kansas City taxing districts while others are in smaller cities or unincorporated areas. This means two homes with the same assessed value can owe very different amounts.
The Hancock Amendment in the Missouri Constitution limits how much a taxing entity can collect without voter approval. When property values rise during reassessment years, levy rates must roll back so total revenue stays within the limit. This is especially important in Platte County given the recent 6.835% residential value increase. The rollback mechanism keeps your tax bill from jumping as much as the assessed value did. The county reassesses real estate every two years in odd-numbered years. New construction is added to the rolls annually. The Missouri State Assessors Association can help you find the right assessor contact for property tax questions anywhere in Missouri. New residents to Platte County should visit the assessor's office to start their personal property account. You will not be assessed until the following January 1, but setting up early avoids delays at the DMV later.