Mississippi car-buying rules

These are the rules the Before the Lot planner uses for Mississippi, with the source and date for each. They describe the rules and the planner's estimate; they are not legal or tax advice, and the dealer's quote and your state's documents are what count.

Dealer doc fee in Mississippi

Cap: $425 (franchised sales).

A regulation, not a statute. It binds franchised new-car dealers (Motor Vehicle Commission licensees) on everything they sell or lease, used cars included. Independent used-only dealers are licensed by the Department of Revenue, and no rule caps their fee. Must be the same for every buyer, cash or credit, itemized, with a bold 'not an official fee' notice.

Source: https://www.mmvc.ms.gov/sites/mmvc/files/rules/Regulation8.pdf. Source date: January 2017. Confidence: high.

Sales tax in Mississippi

Cars and light trucks pay 5%, not the 7% general rate. Trade-in and dealer discounts deducted; maker rebates aren't.

Sources: https://www.dor.ms.gov/motor-vehicle/motor-vehicle-frequently-asked-questions; local rates from Tax Foundation, State and Local Sales Tax Rates, Midyear 2026 (rates as of July 1, 2026) (checked October 16, 2026). Tax table as of October 14, 2026. Confidence: high.

Trade-in tax credit

Yes. Mississippi takes the trade-in value off the taxed price.

Does a maker's rebate lower the taxed price?

No. 'Rebates... assigned to the dealer are taxable.' Source is a 2025 proposed-amendment filing; the rebate rule was unchanged.

Source: https://www.sos.ms.gov/adminsearch/ACProposed/00027816b.pdf. Confidence: high. Table as of October 14, 2026.

Cancellation and return rights

No Mississippi-specific right to cancel or return a dealership purchase is in the planner's data.

There is no federal cooling-off period for buying a car at a dealership; the FTC's door-to-door Cooling-Off Rule excludes dealers with a permanent place of business (16 CFR 429.3(a)). The FTC CARS Rule was vacated by the Fifth Circuit in January 2025 and formally withdrawn effective Feb 12, 2026 (91 FR 6507). No other state with a general used-car cooling-off right was found; NCLC calls California's the first in the nation.

Source: https://consumer.ftc.gov/articles/buying-used-car-dealer. Rules file as of October 15, 2026.

Worked out-the-door example: a $35,000 vehicle

Built with the planner's own out-the-door formula: the tax is the state base rate times the vehicle price plus the doc fee, with no trade-in, rounded to the cent. Local taxes are not included.

Out-the-door estimate for one example price
LineAmount
Vehicle price (example)$35,000
Doc fee (the Mississippi cap)$425
Sales tax at 5% on $35,425$1,771.25
Title and registration (the planner's default estimate)$250
Out-the-door total$37,446.25

Title and registration fees differ by state and vehicle; $250 is a placeholder, not a Mississippi figure.

Plan a purchase in Mississippi

Plan a purchase in Mississippi opens the free planner with Mississippi already chosen. Nothing is sent to a server; the choice rides in the link's fragment.

These rules feed two steps of the method: set your numbers and let dealers compete. To read a dealer's quote line by line, see reading an out-the-door quote. All states.

Doc-fee rules as of October 15, 2026; tax table as of October 14, 2026. Checked October 2026.

Updated October 15, 2026