A Mississippi renewal bill for a passenger vehicle of 10,000 lbs GVW or less is made of up to four separate charges, only one of which varies by where you live. This page explains how each is set and, where the state's own materials don't spell out a figure, says so rather than guessing.
What's on the bill
| Charge | Amount | Set by | Statute / rule |
|---|---|---|---|
| Registration fee | $12.75 renewal / $14.00 first-time | State, flat statewide | Dept. of Revenue Motor Vehicle FAQ |
| Privilege tax | $15.00 for the passenger-vehicle class (per the Department's own recreational-vehicle example) | State, flat by vehicle classification | Miss. Code Ann. Title 27, Ch. 19 (Motor Vehicle Privilege Taxes) |
| Ad valorem tax | 30% of MSRP, depreciated, × your county's millage rate, $100 minimum | State sets the assessed-value method; county sets the millage rate applied to it | Miss. Code Ann. §27-51-19; Miss. Admin. Code Title 35, Pt. VI, Subpt. 1, Ch. 2 |
| Sales/use tax | Where applicable — typically a new purchase or an out-of-state vehicle being titled here, not an ordinary annual renewal | State | Dept. of Revenue Motor Vehicle FAQ |
How the ad valorem tax is actually calculated
The Department of Revenue's own ad valorem page states the baseline plainly: assessed value is 30% of the vehicle's MSRP, reduced for depreciation over about ten years, with a $100 minimum for passenger vehicles. The mechanics behind "reduced for depreciation" are set out in the Mississippi Administrative Code (Title 35, Part VI, Subpart 1, Chapter 2, "Motor Vehicle Assessments"): the Department is required by Miss. Code Ann. §27-51-19 to prepare an assessment schedule every year, using a computer system that looks up each vehicle's value by VIN. Only if the VIN doesn't return a value, or the computer system is down, does the local tax collector fall back to your vehicle's MSRP multiplied by "the applicable depreciation percentage for the year in which the vehicle was manufactured" — pulled from a schedule the Department furnishes to tax collectors annually.
Several unofficial car-tag calculator sites circulate a specific depreciation curve — describing new vehicles as retaining roughly 90% of MSRP, dropping through the first several years, and settling near a fixed low value from around 16 years old onward. This site could not locate that table in an official Department of Revenue or Mississippi Administrative Code document that it could cite with confidence, so it is not reproducing those specific percentages here as fact. What the official sources confirm is the mechanism (VIN-based lookup, MSRP as the fallback input, a schedule reissued annually, a $100 floor) — not a citable public copy of the percentage table itself. If you need your vehicle's actual assessed value, your county tax collector's office can look it up by VIN.
Then the county millage rate
Once your vehicle's assessed value is set, your county multiplies it by its own millage rate to get the tax owed — the Department's page states this directly: "Motor vehicle ad valorem tax is based on the assessed value of the vehicle multiplied by the millage rate set by the local county government." Millage rates differ county to county (and can differ again by municipality or school district within a county), which is the entire reason the same car costs a different amount to renew in Madison County than in DeSoto County. Neither the Department's page nor this site publishes a table of every county's current millage rate — for that, your county tax collector or board of supervisors is the source.
Heavier vehicles are assessed differently
This whole calculation — the 30%-of-MSRP method — applies to vehicles of 10,000 lbs gross vehicle weight (GVW) or less. Heavier vehicles fall under a different ad valorem classification that this page does not cover.
The Legislative Tag Credit isn't fixed at one number forever
The credit that reduces your ad valorem bill traces to Miss. Code Ann. §27-51-103. From January through June 1995, the statute set it at a flat 5% of assessed value. From July 1, 1995 onward, the statute instead directs the Department to recalculate the credit every fiscal year, promulgating the new amount by May 1, based on the projected balance of the Motor Vehicle Ad Valorem Tax Reduction Fund — the fund is built from a share of the sales tax collected on motor vehicles. The Department is required to set an equal percentage credit across private passenger vehicles and light carriers, in proportion to assessed value. It isn't always 5%: as one documented example, the statute itself records the credit at 4.25% of assessed value for the fiscal year running July 2009 through June 2010.
What doesn't change is the cutoff: the credit is unavailable entirely once your late penalty reaches its 25% maximum — see the late renewal penalties page for how that tier is reached.
One group pays no ad valorem tax on a limited number of vehicles: qualifying disabled veterans and surviving spouses. The Department of Revenue's conditions are summarised in our post on disabled plates, placards and the veterans' exemption.
Common questions
How is a Mississippi vehicle's ad valorem tax calculated?
Can this site tell me exactly what I'll owe to renew?
Does the Legislative Tag Credit stay at 5% every year?
What's the flat state registration fee?
Does the ad valorem calculation apply to all vehicles?
Sources
- Mississippi Dept. of Revenue — Motor Vehicle Ad Valorem Taxes — https://www.dor.ms.gov/motor-vehicle/motor-vehicle-ad-valorem-taxes
- Mississippi Dept. of Revenue — Motor Vehicle Frequently Asked Questions (registration fees, privilege tax example) — https://www.dor.ms.gov/motor-vehicle/motor-vehicle-frequently-asked-questions
- Mississippi Code §27-51-19 — Assessment schedule to be prepared by Department of Revenue — https://law.justia.com/codes/mississippi/title-27/chapter-51/in-general/section-27-51-19/
- Mississippi Administrative Code, Title 35, Part VI, Subpart 1, Chapter 02 — Motor Vehicle Assessments — https://www.sos.ms.gov/adminsearch/ACCode/00000186c.pdf
- Mississippi Code §27-51-103 — Motor Vehicle Ad Valorem Tax Credit; amount recalculated annually — https://codes.findlaw.com/ms/title-27-taxation-and-finance/ms-code-sect-27-51-103/