Missouri car sales tax is 4.225% at the state level, plus the local sales tax rate for the address where you register the vehicle. You pay it at a license office when you title the car, not at the dealership, and you have 30 days from the purchase date to do it.1Missouri Department of Revenue. Buying a Vehicle
How the Rate Is Built
Two layers stack to make your total rate. The state portion is 4.225% and applies to every motor vehicle purchase. The local portion depends on your city and county and can push the combined rate above 10% in some jurisdictions.
The rate follows the buyer, not the seller. If you live in Kansas City and buy from a dealer three hours away, you pay the Kansas City combined rate. The Department of Revenue publishes an online calculator that estimates the total based on your address, and it’s worth running before you walk into a license office.2Missouri Department of Revenue. Tax Calculator
What Price the Tax Applies To
Tax is calculated on your net purchase price, not the sticker. Missouri law lets you subtract two things before the rate is applied: a trade-in allowance and a manufacturer rebate.3Missouri Revisor of Statutes. Missouri Code 144.025 – Transactions Involving Trade-In or Rebate, How Computed
Trade in your old car at a dealer for $10,000 against a $30,000 purchase and you pay tax on $20,000. Add a $3,000 manufacturer rebate on top and you pay tax on $17,000. The trade-in doesn’t have to be another vehicle; any tangible personal property traded at a licensed dealer qualifies, up to its actual value.4Missouri Department of Revenue. Miscellaneous Titling Information Section 7
The trade-in deduction only applies when you trade with a motor vehicle dealer. A sale to a private buyer doesn’t give you the same automatic credit.5Legal Information Institute. 12 CSR 10-103.350 – Sales Tax on Motor Vehicles
Credit for Selling Your Old Car Privately
If you sell your previous vehicle privately instead of trading it, you can still claim a credit against the tax on your replacement, as long as the private sale happens within 180 days before or after the replacement purchase. Bring the bill of sale from the private sale when you title the new vehicle.4Missouri Department of Revenue. Miscellaneous Titling Information Section 7
Only one sold vehicle’s proceeds can be applied to a single replacement purchase. You can’t stack credits from two older cars onto one new one.
Credit After a Total Loss
If an insurance company declares your vehicle a total loss, you have 180 days from the insurance payout (or from the date of loss if the vehicle was uninsured) to buy a like replacement and claim a sales tax credit. At least one owner on the original title must also appear on the replacement title, and the credit cannot exceed the tax due on the replacement.6Missouri Department of Revenue. Frequently Asked Questions – Form 426
When No Tax Is Owed
A genuine gift carries no purchase price, so no sales tax is owed. The person giving the vehicle completes Form 768, a general affidavit swearing that no money or other consideration changed hands, and the new owner presents it with the assigned title.7Missouri Department of Revenue. Form 768 – General Affidavit This is the most commonly abused exemption, and the Department of Revenue can assess tax on fair market value if the “gift” is really a token-dollar sale.
Vehicles bought out of state don’t escape Missouri tax. When you title the vehicle here, you owe Missouri’s full combined rate, minus any sales tax you already paid to the other state. If the other state’s rate equaled or exceeded Missouri’s, you owe nothing more.5Legal Information Institute. 12 CSR 10-103.350 – Sales Tax on Motor Vehicles One exception: if you registered and regularly operated the vehicle in another state for at least 90 days before bringing it to Missouri, no Missouri sales tax is due.
Active-duty military stationed in Missouri but claiming another state as their home of record aren’t required to register their vehicles here, and a Leave and Earnings Statement showing residency takes the place of the personal property tax receipt that civilian residents need.8Missouri Department of Revenue. Motor Vehicle Titling and Registration
Leases work differently from purchases. The leasing company pays sales tax on each lease payment rather than on the full vehicle price upfront, and the tax is typically built into your monthly payment, so you won’t be visiting a license office to settle it separately.9Missouri Revisor of Statutes. Missouri Code 144.070 – Purchase or Lease of Motor Vehicles, Tax On
The 30-Day Deadline and Late Penalties
You have 30 days from the purchase date to title the vehicle and pay the tax. The clock starts on the sale date on the bill of sale or title assignment, not the day you drove the car home.
Miss the window and penalties begin on day 31: $25, then another $25 for every additional 30-day period you’re late, up to a $200 maximum.1Missouri Department of Revenue. Buying a Vehicle Sales tax, title fee, and registration fee are all paid at the same license office visit.
What to Bring to the License Office
Walking in without the right paperwork is the most common reason people have to come back a second time. Have these ready:
- Form 108, the Application for Missouri Title and License, covering the VIN, purchase price, and buyer information.10Missouri Department of Revenue. Application for Missouri Title and License
- The original title, properly signed over by the seller.
- A bill of sale (Form 1957 for private-party purchases; dealers typically supply their own invoice).11Missouri Department of Revenue. Bill of Sale or Even-Trade Bill of Sale
- Proof of insurance meeting Missouri’s minimum liability coverage.
- Your personal property tax receipt from the county collector for the prior year, or a statement of non-assessment (tax waiver) from the county assessor if you didn’t own personal property as of January 1 of that year.12Missouri State Tax Commission. Obtaining a Property Tax Receipt or Waiver
If you’re claiming a trade-in credit, a 180-day private sale credit, or a total-loss replacement credit, bring the documentation that backs it up: the bill of sale for the vehicle you sold, the insurance settlement, or the dealer paperwork showing the trade allowance. If you’re claiming a gift exemption, bring the completed Form 768.
Coming Change: Paying at the Dealership
Missouri is shifting vehicle sales tax collection from license offices to dealerships under Senate Bill 28. Dealers will eventually collect the tax at the point of sale, the way most other states already do. The change is tied to the Department of Revenue’s new FUSION system going live, projected for late 2026 or early 2027. Until then, the license-office process described above applies to both dealer and private purchases.13Missouri Department of Revenue. Department of Revenue News Release