Marion County, MissouriProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Payment deadline
- For the 2026 tax year, Missouri real-estate and personal-property taxes are due December 31, 2026; payment must be received or postmarked by December 31 to avoid statutory penalty and interest.
- Assessment appeal
- July 13, 2026 (the second Monday in July), the statutory county Board of Equalization filing deadline; a Missouri State Tax Commission complaint is due September 30, 2026, or within 30 days after the Board of Equalization decision, whichever is later.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
No general Missouri homestead exemption was verified. Marion County’s Senior Real Estate Property Tax Relief applications and renewals for 2026 were accepted January 1 through May 31, 2026; personal-property assessment lists are generally due March 1.
Senior relief
Marion County Senior Real Estate Property Tax Relief Program: the official county page states that 2026 applications and renewals were accepted January 1 through May 31, 2026 and provides the application, renewal, SB 756 amendment, and resolution documents. Contact the Assessor/County Coordinator for current eligibility details. Missouri MO-PTC information: https://dor.mo.gov/taxation/individual/tax-types/property-tax-credit/
Valuation limits
No general local annual valuation cap was verified. Marion County’s SB 756 senior program is a tax-liability credit and does not cap market or assessed value; Missouri ratios are 19% residential, 32% commercial, and 12% agricultural.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →