Illinois Boating Information
Registration Questions:(217) 782-6302
Boating Registration Website:
State Tax Department Website:
Registration Grace Period (Days):30 days
Boat Sales & Use Tax Rate:6.25%
Credit For Tax Paid In Another State:Yes
State Decal Required For Documented Vessel:Yes
Boat Titles Issued:Yes
Notes:Local sales and use tax also apply.
Boating Law Administrator(217) 785-8409
Maximum Speed Limit:65 MPH under 8,000 lbs., 55 MPH over 8,000 lbs.
Maximum Dimensions For Trailer:42'L x 8'6''W x 13' 6"H
Maximum Overall Length with Vehicle & Trailer:60'
Minimum Weight Requiring Separate Trailer Brakes:3000 lbs.
Trailer Equipment Requirements:
Safety Chains:Yes
Brake Lights:Yes
Clearance Lights:Yes (Over 80' Long)
License Light:Yes
Turn Signals:Yes
Breakaway Breaks:Yes
Two Trailers:Yes but there are some restrictions
Wide Trailer Permit:(217) 782-6271
For specific questions about boating issues or BoatUS Government Affairs, please e-mail the department at

Illinois Boating Alerts:

E15 now at Pumps in Illinois - Buyer Beware

Testing by the DOE has indicated that higher blends of ethanol such as E15 can cause engine failure in marine engines and currently Illinois sells E15 at the same roadside gas pumps where you may fuel your trailer boat. E15, or gasoline with 15% corn-ethanol may also be enticing because it is commonly the lowest-priced fuel at the pump. Please make sure to take a good, long look at the pump before selecting fuel for your boat. Currently there is no marine engine warrantied to run on any gasoline fuel containing over 10% ethanol.