State comparison · Updated October 2026
Indiana vs. Kentucky Driving Laws (2026)
Indiana and Kentucky differ on 5 of 9 rules we track: phone law, car sales tax, car inspection, new resident deadline and helmet law.
On a trip from Indianapolis to Louisville takes you across the border, and 5 of the laws switch at the line. Key roads are I-65 on the Indiana side and I-64 on the side of Kentucky; the capitals, Indianapolis and Frankfort, write the laws for each side.
The biggest gap: new residents face 60 days in Indiana versus 15 days in Kentucky for the first deadline. Drivers based in Fort Wayne heading to Lexington, or vice versa, deal with both rulebooks: Indiana's on I-70 and Kentucky's following the state line on I-65. Read the Indiana vs Kentucky guide when moving from Indianapolis and Louisville.
For a quick visit from Indianapolis to Frankfort, pack a helmet and proof of insurance, plan the route before leaving, and watch for the same 70 mph top limit after crossing.
| Topic | Indiana | Kentucky |
|---|---|---|
| Max speed limit | 70 mph | 70 mph |
| Phone law | Hands-free law | Texting ban only |
| Learner's permit age | Permit at 15 | Permit at 15 |
| Car insurance | 25/50/25 | 25/50/25 |
| Car sales tax | 7% | 6% |
| Car inspection | Emissions only | No regular inspection |
| New resident deadline | 60 days | 15 days |
| Helmet law | Under 18 | Under 21 |
| Lane splitting | Not allowed | Not allowed |
Driving laws side by side: Indiana vs Kentucky
Indiana vs Kentucky: Indiana and Kentucky agree on max speed limit (70 mph) and learner's permit age (Permit at 15).
Cell phone and texting laws: Indiana vs Kentucky
Kentucky is looser on phone law: Indiana at hands-free law and Kentucky at texting ban only. A call that is legal around Indianapolis might not be around Louisville on the other side.
Owning a car: the comparison
Indiana vs Kentucky: Kentucky and Indiana have the same rule for 25/50/25 for car insurance.
Car sales tax: Indiana vs Kentucky
Kentucky is lower on car sales tax, with Indiana at 7% and Kentucky at 6%. For a $30,000 purchase, state tax comes to roughly $2,100 in Indiana and $1,800 in Kentucky. Shoppers in Fort Wayne or Lexington pay car tax where the car is registered.
Car inspection: Indiana vs Kentucky
Kentucky is lighter on car inspection, with Indiana with emissions only and Kentucky with no regular inspection. Owners in Fort Wayne follows Indiana laws, even when driven to Lexington.
Moving deadlines: Indiana vs Kentucky
Kentucky is shorter on new resident deadline, with Indiana at 60 days and Kentucky with 15 days. Anyone moving from Fort Wayne into Lexington ought to book DMV visits ahead.
Motorcycle side by side: Indiana vs Kentucky
Indiana vs Kentucky: Kentucky and Indiana match on Not allowed for lane splitting.
Motorcycle helmet laws: Indiana vs Kentucky
The law is stricter in Kentucky on helmet law, with Indiana with under 18 and Kentucky at under 21. Riders heading from Indianapolis toward Louisville switch to Kentucky's helmet rule on arrival.
Moving or buying across the border
- Indiana vs Kentucky: moving from Indiana to Kentucky gives you 15 days for the car registration and 30 days for the license switch.
- The other way: 60 days to register and 60 days to switch licenses.
Indiana vs Kentucky: questions
Which has the higher speed limit, Indiana or Kentucky?
Kentucky and Indiana each allow up to 70 mph.
Is car tax lower, Indiana or Kentucky?
Kentucky charges less at the state level (7% vs. 6%).
Is a motorcycle helmet required in both Indiana and Kentucky?
Indiana: Under 18; Kentucky: Under 21.