Lamar County, MS Car Tag Cost & Registration (2026)
In Lamar County (Hattiesburg), a car purchase is taxed at Mississippi's 5% state rate (the same statewide), but the yearly cost is the ad valorem "car tag" tax — and Lamar County is a mid-range tag cost. City residents (like Hattiesburg) pay noticeably more than unincorporated areas. Mississippi has no emissions or safety inspection.
Verified July 2026 from official sources. How we verify fees.
What you'll pay in Lamar County
- Car sales tax: 5% (statewide, one-time)
- Annual ad valorem tag: a mid-range tag cost (county + city millage)
- Registration/privilege fees: modest, statewide
- Emissions / safety inspection: None (statewide)
How the tag cost works
Your tag's ad valorem tax is the vehicle's value × 30% assessment × Lamar County's (and your city's) millage, minus the statewide Legislative Tag Credit. Because millage is set locally and stacks inside city limits, a Hattiesburg resident pays well above someone in the unincorporated county. For your exact figure, use the Lamar County tax collector. Estimate the purchase cost on our Mississippi title & tax page.
Frequently asked questions
How much is a car tag in Lamar County, MS?
It depends on your vehicle's value and whether you live in a city, but Lamar County is a mid-range tag cost. The tag is the vehicle's value × 30% × local millage, minus the Legislative Tag Credit — check the county tax collector for an exact figure.
Does Lamar County charge sales tax on a car?
Yes — Mississippi's 5% state sales tax, the same in every county. The part that varies by county is the annual ad valorem tag cost, not the sales tax.
Does Lamar County require a vehicle inspection?
No — Mississippi has no emissions test and ended its safety-inspection program in 2015, so Lamar County requires none.