Missouri Car Sales Tax Calculator

What you pay in tax when you buy a vehicle in Missouri, from the statute and the revenue department.

Verified September 21, 2026 · statute and revenue department cross-checked

Vehicle price (USD) Trade-in value (USD) Local rate at your address

Buying the car is only half the cost. You still owe an annual registration fee.

See Missouri vehicle registration fees →

What to know about Missouri

Missouri has a 180-day rule that most states do not. If you sell your old car privately within 180 days before or after buying another, that sale amount is credited just like a trade-in, and you can claim a refund if you already paid. Local rates stack city, county, ambulance and fire district taxes based on your address, so they vary block by block.

Sources

Statute: RSMo § 144.020, § 144.025

Missouri DOR, Buying a Vehicle
“State sales tax of 4.225 percent, plus your local sales tax on the purchase price, less trade-in allowance, if any”

RSMo § 144.025
“if the seller purchases or contracts to purchase a subsequent motor vehicle ... within one hundred eighty days before or after the date of the sale”

Last verified: September 21, 2026.

Estimates only. Your dealer or the state issues the final bill, and exemptions can change what you owe. This page does not collect or store anything you enter.