The sales tax rate in St. Joseph, Missouri, is 9.70% on most retail purchases. That total combines a 4.225% Missouri state rate, a 1.600% Buchanan County rate, and a 3.875% City of St. Joseph rate.1City of St. Joseph, Missouri. Sales Tax Allocation Groceries are taxed lower, some medical items aren’t taxed at all, and a handful of shopping areas inside the city add their own levy on top of the 9.70%.
Where the 9.70% Comes From
The rate is built from three layers of government, each stacking several voter-approved pieces.1City of St. Joseph, Missouri. Sales Tax Allocation
The Missouri state portion of 4.225% includes a 3.000% general sales tax, a 1.000% education tax for school districts, a 0.125% conservation tax, and a 0.100% parks and soil tax.
Buchanan County adds 1.600%, split across a 0.500% general county tax, 0.500% for law enforcement, 0.250% for capital improvements (set to expire December 31, 2028), 0.250% for ambulance services (expiring March 31, 2044), and 0.100% for county tourism.
The City of St. Joseph adds the largest single share at 3.875%: a 1.500% general city tax, 0.500% for parks (expires December 31, 2031), 0.500% for capital improvements (expires June 30, 2029), 0.500% for public safety (expires December 31, 2033), 0.500% for police (expires March 31, 2043), and 0.375% for mass transit.
Several of these pieces sunset on their own schedule unless voters renew them, so the combined rate can shift after an election. If you’re planning a large purchase and want the exact current figure, the city publishes an up-to-date allocation schedule.
Shopping Areas That Add More
Certain commercial zones inside St. Joseph charge sales tax above 9.70% because they sit inside a Community Improvement District or Transportation Development District. Downtown St. Joseph, for example, adds a half-cent (0.50%) district tax to purchases within its boundaries.2Downtown St. Joseph. Community Improvement District The Missouri Department of Revenue confirms that special districts can impose additional sales tax beyond the standard city, county, and state rates.3Missouri Department of Revenue. Sales/Use Tax
These add-ons generally run 0.50% to 1.00%, which can push the rate at some addresses above 10%. The total rate charged should appear on your receipt.
Groceries Are Taxed at a Lower Rate
Food bought for home preparation is taxed at a reduced state rate of 1% instead of the standard 4.225%.4Missouri Revisor of Statutes. Missouri Revised Statutes 144.014 – Food, Retail Sales of, Rate of Tax The constitutional conservation and parks taxes still apply, so the effective state portion on groceries is 1.225%.5Cornell Law Institute. 12 CSR 10-110.990 – Tax-Sales of Food The county and city portions do not drop.
In St. Joseph that works out to roughly 6.70% on qualifying groceries (1.225% state + 1.600% county + 3.875% city), compared with 9.70% on general merchandise.
Qualifying food follows the same definition as the federal food stamp program: meat, produce, dairy, bread, cereal, and similar staples meant for home preparation.4Missouri Revisor of Statutes. Missouri Revised Statutes 144.014 – Food, Retail Sales of, Rate of Tax Restaurant meals, prepared deli food from establishments where more than 80% of revenue comes from ready-to-eat items, alcohol, and tobacco don’t qualify. Vending machine food does.
Medical Items That Aren’t Taxed
Missouri exempts several medical products from sales tax entirely. Prescription drugs dispensed by a licensed pharmacist, insulin, medical oxygen, and home respiratory equipment all qualify for full exemption.6Missouri Revisor of Statutes. Missouri Code 144.030 – Exemptions From Tax The exemption also covers durable medical equipment such as wheelchairs, hospital beds, prosthetic devices, hearing aids, and stairway lifts when they meet the federal Medicare program’s definitions.
Over-the-counter medications are fully taxable even if a doctor recommended them, and general fitness equipment is taxable regardless of a physician’s suggestion. Prescribed scooters, electronic communication devices, and vehicle modifications for individuals with disabilities are exempt.6Missouri Revisor of Statutes. Missouri Code 144.030 – Exemptions From Tax Keeping prescription documentation on hand helps if a retailer tries to apply tax to an exempt item.
Buying a Vehicle
Vehicles work differently. You pay sales tax when you title the car, not at the dealership counter. The state rate of 4.225% applies to the purchase price minus any trade-in allowance, and your local rate applies on top, so a St. Joseph resident pays the full combined rate on the net price.7Missouri Department of Revenue. Buying a Vehicle
If you trade in a vehicle at an out-of-state dealer, bring proof of the trade when you title the new one in Missouri so you get the credit. Acceptable documents include a copy of the title assigned to the dealer or a secure power of attorney for the trade-in.7Missouri Department of Revenue. Buying a Vehicle Without that paperwork, tax is calculated on the full purchase price.
Online and Out-of-State Purchases
When you buy from an online or out-of-state seller that doesn’t collect Missouri sales tax, you owe use tax at the same rate as your local sales tax. For a St. Joseph address, that’s 9.70%.8Missouri Revisor of Statutes. Missouri Code 144.757 – Local Use Tax Most large retailers now collect it at checkout, but smaller sellers and private-party sales across state lines often don’t.
You’re required to file a use tax return if your total untaxed out-of-state purchases exceed $2,000 in a calendar year.9Missouri Department of Revenue. Use Tax FAQs That $2,000 isn’t an exemption. Once you cross it, you owe tax on the full amount, not just the portion above the threshold.
Back-to-School Sales Tax Holiday
Missouri waives all state and local sales taxes on certain back-to-school items for one weekend each August. In 2026, the holiday runs from Friday, August 7 at 12:01 a.m. through Sunday, August 9 at midnight.10Missouri Department of Revenue. Back-to-School Sales Tax Holiday
Three categories qualify, each with a per-item price cap:
- Clothing: any single article priced at $100 or less.
- School supplies: individual items at $50 or less.
- Personal computers and peripherals: up to $1,500.
Items priced above the cap are taxed at the normal rate on the full price, not just the portion above the limit. The holiday applies to in-store and online purchases shipped to a Missouri address during the qualifying period. On a $1,500 computer, skipping the 9.70% works out to roughly $145.