How Old Do You Have to Be to Drive a Boat in Illinois?

In Illinois, you have to be at least 10 years old to drive a boat, but the minimum age is only the starting point. What a child or teen can actually operate depends on the engine’s horsepower, their exact age, and whether they hold a boating safety certificate.¹

Age Rules by Bracket

Illinois sets its rules around a single dividing line: 10 horsepower. Boats at or below that threshold are treated loosely. Boats above it trigger supervision and education requirements that change with the operator’s age.²

Under 10. Cannot operate any motorboat, at any horsepower, under any supervision.
Ages 10 and 11. May operate a boat over 10 horsepower only with a parent, legal guardian, or a designated adult (18 or older) physically on board. Boats at 10 horsepower or less need no supervision.
Ages 12 through 17. May operate a boat over 10 horsepower if they hold a valid boating safety certificate, or if a qualifying adult is on board supervising. Below 10 horsepower, no special rules apply.
18 and older. Anyone born on or after January 1, 1998 needs a boating safety certificate for any motorboat over 10 horsepower. Anyone born before that date can operate without one.

The horsepower cutoff matters more than most families realize. A 10-year-old can legally take a small fishing boat out alone as long as the outboard motor is 10 horsepower or less.¹

The Boating Safety Certificate

The certificate is the credential that unlocks solo operation of anything more powerful than a trolling motor. If you were born on or after January 1, 1998, you need one to run a motorboat over 10 horsepower, regardless of how old you are now. There is no upper age exemption once you fall on the wrong side of that birthdate. The certificate is valid for life and never needs renewal.¹

How to Earn It

You must be at least 11 to take the test. Illinois offers two options:²

In-person classes taught by instructors, offered free through the Illinois Department of Natural Resources.
Online courses through IDNR-approved providers, with fees running roughly $35 to $60.

Both cover the same ground: navigation rules, required safety equipment, emergency procedures, and Illinois-specific law. Pass the final test and you receive your certificate from IDNR or the approved provider.

Carrying It on the Water

Operators must carry the certificate on board and show it to law enforcement on request. Failing to carry it is a petty offense. Forging one, falsifying one, or using someone else’s is a Class A misdemeanor.¹

Supervision Rules for Kids and Teens

When a child aged 10 to 17 operates a boat over 10 horsepower without their own certificate, the supervising adult has to be physically on the boat. Watching from the dock does not qualify. The supervisor must be a parent, a legal guardian, or an adult over 18 that a parent or guardian has designated.²

Here is the part that catches families off guard. If the supervising adult was born on or after January 1, 1998, that adult also needs a boating safety certificate. An older sibling who is 19 and never took the course cannot legally supervise a 10-year-old on a boat over 10 horsepower. A parent born before 1998 can supervise with no certificate at all.

When a child breaks the age or supervision rules with a parent or guardian’s knowledge, the penalty falls on the parent or guardian, not the child.¹

Jet Skis and Other Personal Watercraft

Jet skis, WaveRunners, and other personal watercraft are treated as motorboats under Illinois law, so the age brackets and certificate rules above apply the same way. Two additional rules matter for anyone planning to put a teenager on a PWC: they cannot be operated between sunset and sunrise, and every person aboard must wear a U.S. Coast Guard-approved life jacket (inflatables do not count on a PWC).³

Renting a Boat Is a Different Question

Meeting Illinois’ age and certificate rules does not mean a teenager can walk into a marina and rent a boat. Rental companies set their own minimum age, usually 18, and often 21 or even 25 for larger vessels. These are business policies driven by insurance, not state law. A captained charter, where a professional pilots the boat, tends to have more flexible rules because the renter is not at the helm. Call ahead if a rental is part of the plan.

Who Does Not Need a Certificate

A few common situations sit outside the certificate requirement entirely: anyone born before January 1, 1998; boats propelled solely by electric motor; operation on private property; and visitors from out of state using Illinois waters for up to 90 days who meet their home state’s education requirements or hold a Canadian Pleasure Craft Operator’s Card. Certificates from other states, Canadian provinces, the U.S. Coast Guard Auxiliary, and the United States Power Squadrons are also accepted for operators over 12, provided the course substantially meets Illinois standards.¹

1
Illinois General Assembly. Illinois Compiled Statutes 625 ILCS 45/5-18 – Motorboat Operation
2
Illinois Department of Natural Resources. Boating Safety Education
3
Illinois Department of Natural Resources. Illinois Boating Laws and Responsibilities