Type any address in the Kansas City metro. Where the county publishes a valuation we use the assessor's own number, apply the statutory assessment ratio and the county levy, and show what that works out to a year and a month — sourced and dated, and labelled an estimate because your exact bill depends on your taxing district.
Property tax is the line most people underestimate when they move here, because it is not one rate — it is the sum of every district that overlaps your parcel. Missouri assesses residential property at 19% of market value and Kansas at 11.5%, and then the county, the city, the school district, the library, the fire district and sometimes a special district each apply their own levy per $100 or per $1,000 of that assessed figure. Two houses a mile apart, worth the same money, can carry bills that differ by thousands.
The address is geocoded and the containing county comes from the FCC area service keyed on the coordinate, not from the geocoder's own guess — "Kansas City" spans four counties and getting that wrong would put a confident, wrong figure on the page. Where the county publishes a parcel valuation we use the assessor's own market value. Where it does not, you set the value yourself and every other step is unchanged.
We apply the county's representative combined levy, weighted towards where people actually live. Your parcel sits in one specific tax code area, and that area's total can run meaningfully above or below the county figure. This tool will not print a number that looks like a bill when it is not one — for the exact figure, the county collector prints it against your parcel number.
Assessments lag sales. The valuation on file is what the county last set, which for a long-held home can be well below what it would sell for today. Buy it, and the county reassesses — often nearer the price you paid. Budget against the higher figure, not the current owner's bill.
Sources · Assessment ratios: RSMo 137.115 (Missouri, 19% residential) and K.S.A. 79-1439 (Kansas, 11.5% residential). County levies: tax year 2025 certified county rates, as of 1 November 2025. Parcel valuations: each county assessor's own published GIS service, dated per record. County boundary: FCC area service on Census block geography.