Car sales tax in Columbia, Missouri
Buying a car in Columbia, Missouri (Boone County), the combined state and local sales tax rate is 7.975%. On a $35,000 car that's about $2,840.76 in tax; with a $10,000 trade-in, about $2,043.26.
These are the figures the Before the Lot planner and its AI connector use for Columbia, with their sources. They describe the rates and the arithmetic; they are not tax advice, and the dealer's quote and the state's documents are what count.
How the rate is made up
Columbia, Boone County: 7.975% combined state and local rate (Missouri's rate file, rates as of 2026-10-01). The table has base county and city rates only; special districts can add more, so the rate at an address can be higher.
Out-the-door examples in Columbia
Worked with the planner's own out-the-door math for a new car, the same numbers the connector gives an AI assistant.
| Line | $35,000 car, $10,000 trade-in | $50,000 car, no trade-in |
|---|---|---|
| Vehicle price | $35,000 | $50,000 |
| Doc fee (see below) | $620.79 | $620.79 |
| Sales tax at 7.975% | $2,840.76 | $4,037.01 |
| Title and registration (a placeholder) | $250 | $250 |
| Out the door, as dealers quote it | $38,711.55 | $54,907.80 |
| Tax saved by the trade-in credit | $797.50 | — |
| Out the door after the trade-in credit | $37,914.05 | — |
The trade-in's value itself comes off what's financed or paid, not shown here. Title and registration differ by vehicle; $250 is the planner's placeholder, not a Missouri figure.
Doc fee and trade-in in Missouri
- The examples use Missouri's doc-fee cap, $620.79 (RSMo 301.558; 12 CSR 10-26.231); a dealer's own fee may be lower.
- A trade-in lowers the taxed price in Missouri: tax is on the price less the trade-in.
- A maker's rebate lowers the taxed price.
Every rule for the state, with sources: Missouri car-buying rules.
Other places in Missouri
- Kansas City: 8.975%
- St. Louis: 9.679%
- Springfield: 8.1%
- Independence: 8.6%
- Lee's Summit: 8.475%
- O'Fallon: 7.95%
Work out your own deal
Open the planner with Columbia filled in
Change the price, trade-in and fees to your own. Nothing is sent to a server; the numbers ride in the link. In Claude or ChatGPT, add the connector and ask about Columbia by name.
Questions
What is the car sales tax rate in Columbia, Missouri?
Buying a car in Columbia, Missouri (Boone County), the combined state and local sales tax rate is 7.975%. On a $35,000 car that's about $2,840.76 in tax; with a $10,000 trade-in, about $2,043.26.
What's the out-the-door price of a $50,000 car in Columbia?
About $54,907.80: the $50,000 price, a $620.79 doc fee, $4,037.01 in sales tax and a $250 placeholder for title and registration. A dealer's itemized quote is what counts.
Does a trade-in lower the sales tax in Columbia?
Yes. Missouri taxes the price less the trade-in, so a $10,000 trade-in on a $35,000 car lowers the tax by about $797.50.
Is the Columbia rate charged on the dealer's address or mine?
Missouri's local tax on a car goes by where the buyer lives (the address the car is registered to). Missouri's own lookup by address: https://sa.dor.mo.gov/mv/stc/