Missouri Sales Tax Calculator - Purchase Total Estimate

Missouri charges a statewide sales tax on most tangible personal property and many taxable services, then cities, counties, and special districts may add local rates. The statewide rate used as the calculator default is 4.225 percent, which has been the Missouri state sales-tax rate for many years. Combined rates at the register are often higher because local option taxes stack on top of the state rate. St. Louis, Kansas City, Springfield, and smaller jurisdictions can all differ. The arithmetic is simple. State tax = Purchase × State rate / 100. Local tax = Purchase × Local rate / 100. Total tax is the sum, and total amount is purchase plus total tax. Combined rate is state plus local. If a $150 taxable item is charged 4.225 percent state tax and no local tax, state tax is $6.34 and the total is $156.34. Adding a 2.5 percent local rate on $75.50 produces $5.08 of combined tax. Sales-tax bases are not universal. Groceries, prescription drugs, manufacturing equipment, and occasional exemptions can change what is taxable. Use tax may apply when tangible goods are bought out of state and brought into Missouri. Marketplace facilitators often collect tax for remote sellers. This calculator assumes the amount you enter is already the taxable receipts figure, not a mix of taxable and exempt SKUs. Look up the current combined rate for the exact 5-digit ZIP or taxing jurisdiction before treating a total as a checkout quote. Local rates change when voters approve capital-improvement, public-safety, or transportation taxes. The Missouri Department of Revenue publishes jurisdiction rates; a POS system should use the location of the sale, which may be a store, a delivery address, or a special district overlay. This page is a planning estimate for a taxable amount you already know, not a substitute for a tax-engine determination or legal advice.