State comparison · Updated October 2026
Indiana vs. Michigan Driving Laws (2026)
Indiana and Michigan part ways on 7 of 9 topics we track: max speed limit, learner's permit age, car insurance, car sales tax, car inspection, new resident deadline and helmet law.
On a trip from Indianapolis to Detroit takes you across the border, and 7 of these laws switch at the line. Key roads include I-65 on the Indiana side and I-75 in Michigan; the capitals, Indianapolis and Lansing, write the laws for their side.
The largest difference: minimum coverage differs: 25/50/25 against 50/100/10. Drivers based in Fort Wayne who drive to Grand Rapids, and back, live under both sets of laws: Indiana's on I-70 and Michigan's across the border on I-94. Use the Indiana vs Michigan guide before driving from Indianapolis to Detroit.
On a weekend drive from Indianapolis to Lansing, pack a helmet and proof of insurance, plan the route ahead of time, and expect the limit to change from 70 to 75 mph at the border.
| Topic | Indiana | Michigan |
|---|---|---|
| Max speed limit | 70 mph | 75 mph |
| Phone law | Hands-free law | Hands-free law |
| Learner's permit age | Permit at 15 | Permit at 14 |
| Car insurance | 25/50/25 | 50/100/10 |
| Car sales tax | 7% | 6% |
| Car inspection | Emissions only | No regular inspection |
| New resident deadline | 60 days | Right away |
| Helmet law | Under 18 | Under 21 |
| Lane splitting | Not allowed | Not allowed |
Driving laws compared: Indiana vs Michigan
Indiana vs Michigan: Indiana and Michigan have the same rule for phone law: Hands-free law.
Max speed limit: Indiana vs Michigan
The law is faster in Michigan on max speed limit: Indiana at 70 mph and Michigan with 75 mph. Open-road interstates are posted at 70 mph in Indiana and 70 mph in Michigan. Leaving Indianapolis toward Detroit, check the posted limit when you cross.
Learner's permit age: Indiana vs Michigan
The law is earlier in Michigan on learner's permit age: Indiana at permit at 15 and Michigan with permit at 14. A new driver from Indianapolis driving to Detroit are bound by Michigan's provisional limits there.
Owning a car side by side: Indiana vs Michigan
Car insurance: Indiana vs Michigan
Michigan is higher on car insurance: Indiana with 25/50/25 and Michigan at 50/100/10. Indiana is at-fault while Michigan is no-fault. A policy written in Indianapolis needs to be rewritten after a move to Detroit.
Car sales tax: Indiana vs Michigan
Indiana is higher on car sales tax, with Indiana at 7% and Michigan at 6%. For a $30,000 purchase, state tax is roughly $2,100 in Indiana and $1,800 in Michigan. Shoppers in Fort Wayne or Grand Rapids pay car tax of the state where they register.
Car inspection: Indiana vs Michigan
Michigan is lighter on car inspection, with Indiana with emissions only and Michigan with no regular inspection. Owners in Fort Wayne answers to Indiana laws, even on trips to Grand Rapids.
New resident deadlines: Indiana vs Michigan
Michigan is shorter on new resident deadline: Indiana with 60 days and Michigan at right away. Anyone moving from Fort Wayne to Grand Rapids ought to book DMV visits ahead.
Motorcycle: Indiana vs Michigan
Indiana vs Michigan: Indiana and Michigan match on lane splitting (Not permitted).
Motorcycle helmet laws: Indiana vs Michigan
The rule is stricter in Michigan on helmet law, with Indiana with under 18 and Michigan at under 21. Motorcyclists riding from Indianapolis toward Detroit must obey Michigan's helmet law at the line.
Moving or buying across the border
- Indiana vs Michigan: moving from Indiana to Michigan gives you right away, as soon as you become a resident for the car registration and right away, as soon as you become a resident for a license.
- Moving from Michigan to Indiana: 60 days to register and 60 days to switch licenses.
Indiana vs Michigan: common questions
Which has the higher speed limit, Indiana or Michigan?
Michigan (75 mph vs. 70 mph).
Is it cheaper to buy a car, Indiana or Michigan?
Michigan costs less at the state level (7% vs. 6%).
Do I need a helmet in both Indiana and Michigan?
Indiana: Under 18; Michigan: Under 21.