Vehicle tax in Saint Louis runs about 7.74% all in, the rate for the City of St. Louis. Missouri credits your trade-in, so you are taxed on the price after it comes off. The doc fee is capped at $620.79.
Type your own numbers and see the same car priced as cash and as a loan, with the taxes and state fees for Saint Louis, MO. Nothing you type leaves this page.
To see a lease, pick a vehicle. A lease is priced on one car: what it is expected to be worth at the end (its residual) and the leasing company's money factor change by model and by month.
An estimate on the numbers you type, not an offer of credit or a quote from any dealership. Starting loan rates are Rateous's rates for each credit range and term; they are not an offer from any lender. The documentary fee starts at an example figure, the state's legal cap where it has one or $599 where it does not, not any dealership's fee; each dealership sets its own. Taxes and state fees are estimates for Saint Louis, MO; the dealership's paperwork and your motor vehicle agency have the final numbers. Nothing you type is sent, saved, or used to check your credit.
| Line | Estimate |
|---|---|
| Missouri sales tax (7.74%, county rate, paid at registration) | $2,708.30 |
| Title fee | $8.50 |
| Registration (estimate) | $33.25 |
| Title processing fee (with the $8.50 title fee) | $9.00 |
| Registration processing fee (per one-year registration) | $9.00 |
About 7.74% all in for the City of St. Louis. Missouri charges 4.225% and local jurisdictions add the rest, set by where you live.
Trade-in allowance (and proceeds of a vehicle sold within 180 days) reduce the taxable purchase price (RSMo 144.025).
A car the selling dealership ships out of its own state usually carries no sales tax in that state; you pay Missouri tax when you register it in Missouri. Picking the car up in another state can mean paying that state's tax at the dealership first, and whether Missouri credits it depends on the two states. Whether a dealership ships to Saint Louis is up to the dealership, and it sets its own shipping charge, shown on the car before you sign.
Missouri caps it at $620.79. Under 12 CSR 10-26.231, the maximum administrative fee is $620.79 for the 2026 license year, adjusted for inflation each year ($604.47 in 2025).