State comparison · Updated October 2026
Alabama vs. Tennessee Driving Laws (2026)
Alabama and Tennessee differ on 1 of 9 rules we track: car sales tax.
Heading from Huntsville to Nashville takes you across the border, and 1 of the nine laws switch at the line. Main routes include I-65 on the Alabama side and I-40 on the side of Tennessee; the capitals, Montgomery and Nashville, set the laws for each side.
The largest difference: car tax on a $30,000 purchase differs by $1,500. Drivers based in Birmingham who travel to Memphis, and back, live under both rulebooks: Alabama's on I-20 and Tennessee's across the border on I-24. Read the Alabama vs Tennessee guide when moving from Huntsville to Nashville.
On a weekend drive from Montgomery to Nashville, pack your documents if you ride, plan the route before leaving, and expect the same 70 mph top limit at the border.
| Topic | Alabama | Tennessee |
|---|---|---|
| Max speed limit | 70 mph | 70 mph |
| Phone law | Hands-free law | Hands-free law |
| Learner's permit age | Permit at 15 | Permit at 15 |
| Car insurance | 25/50/25 | 25/50/25 |
| Car sales tax | 2% | 7% |
| Car inspection | No regular inspection | No regular inspection |
| New resident deadline | 30 days | 30 days |
| Helmet law | All riders | All riders |
| Lane splitting | Not allowed | Not allowed |
Driving laws side by side: Alabama vs Tennessee
Alabama vs Tennessee: Alabama and Tennessee have the same law for 70 mph for max speed limit, Hands-free law for phone law and Permit at 15 for learner's permit age.
Owning a car: Alabama vs Tennessee
Alabama vs Tennessee: Tennessee and Alabama agree on car insurance (25/50/25), car inspection: No regular inspection and new resident deadline: 30 days.
Car sales tax: Alabama vs Tennessee
Alabama is lower on car sales tax: Alabama at 2% and Tennessee with 7%. For a $30,000 purchase, state tax is roughly $600 in Alabama and $2,100 in Tennessee. Shoppers in Birmingham and Memphis pay the tax of the state where they register, wherever they buy.
Motorcycle: Alabama vs Tennessee
Alabama vs Tennessee: Tennessee and Alabama agree on helmet law (All riders) and Not permitted for lane splitting.
Moving or buying across the border
- Alabama vs Tennessee: relocating from Alabama to Tennessee means 30 days for the car registration and 30 days for a license.
- Going from Tennessee to Alabama: 30 days to register and 30 days for a license.
Alabama vs Tennessee: FAQ
Which has the higher speed limit, Alabama or Tennessee?
Both Alabama and Tennessee top out at 70 mph.
Which state taxes cars less — Alabama or Tennessee?
Alabama charges less at the state level (2% vs. 7%).
Do I need a helmet in both Alabama and Tennessee?
Alabama: All riders; Tennessee: All motorcyclists.