Where to Register Your Boat in Illinois

Boat registration in Illinois is handled by the Illinois Department of Natural Resources (IDNR), not by your county clerk or the Secretary of State. You register through IDNR's Boat Registration office, which processes all recreational vessel registrations for the state. The office accepts registrations by mail, online through their website, or in person at their Springfield office.

Illinois requires registration for any motorized vessel — including boats with outboard motors, jet skis, and sailboats with auxiliary motors — that operates on state waters. Non-motorized boats like canoes and rowboats do not need registration. If your boat is already registered in another state, you will need to transfer that registration to Illinois if you keep the boat here for more than 90 days.

Key Takeaways

  • The Illinois Department of Natural Resources issues all boat registrations; you cannot register through your county or the Secretary of State.
  • You need the boat's hull identification number (HIN), proof of ownership, and a completed process form to register.
  • Registration costs vary by boat length and motor type, and your certificate is valid for three years from the date of issue.
  • You can register online, by mail, or in person, and processing times range from a few days online to two to three weeks by mail.
  • Display your registration number and decal on the boat's hull in the location specified by IDNR rules.

Documents You Need Before You Start

Gather these items before you contact IDNR or fill out an process. You will need the hull identification number (HIN), which is a 12-character code stamped or engraved on the boat's hull, usually on the starboard (right) side near the waterline or on the transom. If you cannot locate it, the boat's manufacturer or previous owner can provide it.

You also need proof of ownership. If you bought the boat new, bring the manufacturer's certificate of origin. If you bought it used, bring the previous registration certificate from Illinois or the other state where it was registered. If the boat has a lien (a loan against it), bring documentation showing the lienholder's name and address.

Finally, you need a completed process for Boat Registration (Form BW 1), available on the IDNR website or by mail request. The form asks for your name, address, the boat's description, the HIN, and the motor information. If you are registering as a business or organization rather than an individual, bring proof of your business registration.

How Much Registration Costs

Registration fees in Illinois depend on the boat's length and whether it has a motor. The fee structure is set by state law and does not vary by county or by where you launch the boat. A three-year registration for a motorized boat under 16 feet costs one amount; boats 16 to 26 feet cost more; and boats over 26 feet cost significantly more. Non-motorized boats have a lower fee.

You pay the fee when you submit your process, whether you register online, by mail, or in person. IDNR accepts checks, money orders, and credit cards (online only). Once approved, your registration certificate and decal are mailed to you at no additional cost. If you lose your certificate or decal before the three-year period ends, you can request a replacement for a small fee.

Registering Online, by Mail, or In Person

Online registration is the fastest option. Visit the IDNR website, locate the Boat Registration section, and complete the process form with your boat and personal information. Upload a photo of your HIN and proof of ownership. Pay by credit card. Your registration is usually processed within a few business days, and your certificate and decal are mailed to you.

Mail registration takes longer but works if you prefer not to register online. Print Form BW 1 from the IDNR website or request it by phone. Fill it out completely, include copies of your proof of ownership and HIN documentation, and mail it with a check or money order to the IDNR Boat Registration office address listed on the form. Processing takes two to three weeks from the date IDNR receives your envelope.

In-person registration at the IDNR office in Springfield allows you to register and receive your certificate the same day if you arrive during office hours. Bring the original documents listed above and cash or a check. Call ahead to confirm office hours and any current procedures, as hours may change seasonally.

What Happens After Your Registration Is Approved

Once IDNR approves your registration, you receive a registration certificate and a registration decal (a sticker) by mail. The certificate shows your registration number, the boat's HIN, the expiration date (three years from issue), and your name and address. Keep this certificate on the boat or with your boating documents — you must show it to a conservation officer if asked.

The decal must be displayed on the boat's hull in the location specified in your registration packet, usually on the starboard side near the bow or on the transom. The registration number itself (a series of letters and numbers) must also be painted or permanently affixed to the hull in a contrasting color, readable from at least 10 feet away. Failure to display the number and decal is a violation and can result in a citation.

Your registration is valid for three years. About 60 days before it expires, IDNR mails you a renewal notice. You can renew online, by mail, or in person using the same process as initial registration. If you sell the boat, the new owner must register it in their name; your registration does not transfer.

If You Bought a Boat Registered Out of State

If you own a boat currently registered in another state and you keep it in Illinois for more than 90 days, you must transfer the registration to Illinois. Start by contacting the IDNR Boat Registration office and providing the boat's current out-of-state registration number and the state where it is registered. IDNR will tell you what additional documentation you need from that state.

Most states require you to obtain a release of registration or certificate of title from their boat registration authority before you can register elsewhere. Contact that state's natural resources or boating agency directly — do not wait for IDNR to request it on your behalf, as this delays the process. Once you have the release, submit it to IDNR along with your Illinois registration process and proof of ownership.

Frequently Asked Questions

Do I need to register a canoe or kayak?

No. Illinois requires registration only for motorized vessels. Canoes, kayaks, rowboats, and sailboats without auxiliary motors do not need to be registered. If your sailboat has an outboard motor or inboard motor, it must be registered.

What if I cannot find the hull identification number on my boat?

Contact the boat's manufacturer with the model and year, and they can provide the HIN. If the boat is very old or the HIN has been damaged, contact IDNR directly — they may be able to issue a replacement HIN or work with you on an alternative registration process. Do not attempt to register without a valid HIN.

Can I register a boat I am still paying off?

Yes. If the boat has a lien (a loan against it), include the lienholder's name and address on your registration process. The lienholder does not have to sign the process, but IDNR needs to know they have an interest in the boat. You can still register and use the boat while paying off the loan.

How long does registration take if I explore online?

Online applications are usually processed within a few business days. Your certificate and decal are then mailed to you, which takes an additional three to five business days depending on your location. Plan for a total of one to two weeks from submission to receipt.

What do I do if my registration decal is damaged or lost?

Contact the IDNR Boat Registration office and request a replacement decal. You will need to provide your registration number and proof of ownership. There is a small replacement fee, and the new decal is mailed to you within one to two weeks.