Jefferson County, MO property tax is calculated by multiplying the combined levy rates of your local taxing districts by a classified percentage of your property’s market value: 19 percent for residential property, 32 percent for commercial, and 12 percent for agricultural land. Bills are due by December 31, and late payments carry a 2 percent monthly penalty up to 18 percent per year. Several credits can lower what you owe, including a county-level senior tax freeze adopted in 2024.
How Your Bill Is Calculated
Two numbers determine your tax bill: the assessed value of your property and the total levy rate for your location.
The Jefferson County Assessor sets market value as of January 1 of each odd-numbered year, and that value carries into the following even-numbered year unless you build or improve.1Missouri Revisor of Statutes. Missouri Code 137.115 – Real and Personal Property, Assessment Missouri law then applies a classification percentage to that market value to produce your assessed value:
- Residential: 19 percent of market value
- Agricultural and horticultural: 12 percent of productive value
- Commercial, industrial, and all other real property: 32 percent of market value
- Personal property: 33.33 percent of true value
A home with a market value of $250,000 has an assessed value of $47,500.2State Tax Commission of Missouri. State Tax Commission Definitions That is the figure your tax rate is applied to, not the full market value.
The tax rate itself is the sum of every levy from every taxing district that covers your parcel: county government, your school district, your fire protection district, often a road district, and sometimes a library or parks district. Each entity sets its own rate based on its budget. Rates are expressed per $100 of assessed value, and because different areas of the county fall under different combinations of districts, two homes with identical market values can carry different bills depending on location. The Missouri State Auditor publishes current levy rates for every taxing district in Jefferson County each year.
Agricultural land is handled differently from residential or commercial. Instead of market value, Missouri uses a productivity-based system with eight soil grades. Per-acre productive values currently range from $1,035 for the highest-quality Grade 1 land down to $30 for Grade 8, with the 12 percent classification applied to that productive value.3Missouri Secretary of State. Agricultural Land Productive Values
Personal Property You Also Owe On
Missouri taxes personal property, so if you own vehicles, boats, or trailers in Jefferson County as of January 1, you owe tax on them. You must file a personal property assessment list with the county assessor by March 1 each year.
Missing that deadline triggers a flat penalty that scales with the assessed value of the unreported property, from $15 at the low end up to $105 for assessed values of $9,001 and above. Filing between March 1 and May 1 avoids the penalty; after May 1 it sticks. The assessor can waive it in limited circumstances, such as active military service outside Missouri, a timely filing made in the wrong county, or proof the county never mailed you a form.4Missouri Revisor of Statutes. Missouri Code 137.280 – Penalty for Failure to File Assessment List
When to Pay and What Happens If You’re Late
Property taxes are due by December 31 of the year billed. If you pay by mail, the postmark date counts as your payment date. The Jefferson County Collector accepts payments online, by phone, by mail, and in person at 729 Maple Street, Suite 36, Hillsboro, MO 63050.5Jefferson County, MO. Collector Card payments carry a 2.5 percent convenience fee (minimum $1.95); e-checks are a flat $4.95. The county does not keep any portion of those fees.6Jefferson County, MO. Pay Taxes
Miss December 31 and the collector begins adding penalties on January 1.7Missouri Revisor of Statutes. Missouri Code 139.100 – Delinquent Taxes, Penalty Missouri law sets the base penalty at 18 percent per year, capped at 2 percent per month (or partial month) if you redeem before a tax sale.8Missouri Revisor of Statutes. Missouri Code 140.100 – Penalty on Delinquent Taxes On a $3,000 bill, six months late means $360 in penalties on top of the tax owed.
If delinquency continues, the collector will eventually offer the property at a tax sale. Missouri uses a three-offering system. At the first and second annual sales, the property is offered for the amount of delinquent taxes, interest, penalties, and costs. A third offering goes to the highest bidder as long as the bid covers the total delinquent amount.9Missouri Revisor of Statutes. Missouri Code 140.250 – Third Offering of Delinquent Lands and Lots, Redemption
Properties sold at the first or second offering carry a one-year redemption period. You can reclaim the property by paying the buyer’s full purchase amount, any later taxes the buyer paid, plus 10 percent interest on the original investment and 8 percent on subsequent taxes.10Jefferson County, MO. Frequently Asked Questions Third-offering sales shrink the redemption window to 90 days. Sales after the third offering have no redemption period, and the buyer takes the collector’s deed immediately.
Credits That Can Lower Your Bill
Jefferson County Senior Property Tax Freeze
Jefferson County adopted a senior tax credit under Ordinance 24-0132, effective February 15, 2024. It freezes your county property tax at the amount you owed in the year you first became eligible and credits you the difference in later years if the bill rises.11Jefferson County, MO. Real Property Tax Credit for Seniors
To qualify you must be at least 62 by January 1 of the base tax year, own and occupy the home as your primary residence, be liable for the taxes, and have no delinquent Jefferson County real estate taxes. The county has not published an income limit for this credit.
Applications open March 1 each year and must be submitted by June 30. Forms are available at the Collector’s office, several county library branches, and online. You can file by mail to the Collector of Revenue at PO Box 100, Hillsboro, MO 63050, in person at the Administration Center, or by email to taxcredit@jeffcomo.org. Once approved, you do not have to renew annually, though the county audits accounts for changes in residency, ownership, or delinquency.
Missouri Property Tax Credit (Circuit Breaker)
The state Circuit Breaker refunds part of the property tax or rent paid during the year. You must be at least 65, between 18 and 64 and 100 percent disabled, or at least 60 and receiving surviving-spouse Social Security benefits.12Missouri Department of Revenue. Property Tax Credit
Homeowners who owned and occupied their home all year qualify with household income up to $30,000 single or $34,000 married. Renters and part-year owners face limits of $27,200 single and $29,200 married. The maximum credit is $1,100 for homeowners and $750 for renters. Claim it on your Missouri return using Form MO-PTC.
Homestead Preservation Act
Missouri’s Homestead Preservation Act is on the books and would cap tax increases for qualifying seniors and disabled homeowners with income up to $70,000.13Missouri Revisor of Statutes. Missouri Code 137.106 – Homestead Preservation In practice the program has historically lacked state funding and has not been available to taxpayers in most years. The Jefferson County senior freeze provides comparable relief at the local level and is actively accepting applications.
Nonprofit and Military Exemptions
Qualifying nonprofit organizations and active-duty military members may be eligible for personal property tax exemptions. These require a formal application with supporting documentation filed with the assessor’s office, and because most determinations tie to the January 1 ownership date, filing early in the year matters.
If You Think Your Assessment Is Too High
You can appeal the assessor’s value to the local Board of Equalization. The statutory deadline is the second Monday in July. You do not need an attorney, but you do need evidence: recent comparable sales, a professional appraisal, or documentation that the assessor’s figure exceeds what a willing buyer would pay.
If the Board rules against you, the next step is the Missouri State Tax Commission. File on the Commission’s official forms and attach a copy of the Board’s decision. If the Board never properly notified you of the hearing, submit proof of the late notice or other procedural failure in place of the decision.14State Tax Commission of Missouri. Property Tax Appeals Before the State Tax Commission of Missouri
Agricultural appeals often turn on whether the assessor assigned the correct productivity grade. The difference between adjacent grades can meaningfully change the assessed value, and you can request the grade descriptions directly from the State Tax Commission.