Idaho boat registration is handled by the Idaho Department of Parks and Recreation, not your county clerk

Idaho requires all motorized boats and sailboats 12 feet or longer to be registered, regardless of where you use them. Non-motorized boats under 12 feet do not need registration. You register through the Idaho Department of Parks and Recreation (IDPR), which issues a certificate of number that serves as your boat's registration. The process takes about two weeks if you explore in person or by mail, and you can renew online.

You will need the boat's hull identification number (HIN), proof of ownership, and a completed process form. If you are registering a used boat, you may also need a bill of sale or title transfer document from the previous owner. The registration is valid for three years from the date of issue.

Key Takeaways

  • Motorized boats and sailboats 12 feet or longer must be registered with the Idaho Department of Parks and Recreation, not your county.
  • Registration costs between $15 and $30 depending on boat length and type, and is valid for three years.
  • You need the hull identification number, proof of ownership, and a completed process form to register.
  • You can register in person at any IDPR office, by mail, or online for renewals only.

What documents you need to bring or submit

Start with the hull identification number (HIN), which is permanently stamped on the boat's hull, usually on the starboard (right) side near the waterline or on the transom. If you cannot locate it, contact the boat manufacturer or the previous owner. You will also need proof of ownership — either the original title, a bill of sale, or a manufacturer's certificate of origin if the boat is new.

Complete the process for Certificate of Number (Form 36-1008), available on the IDPR website or at any IDPR office. The form asks for your name, address, the boat's description, the HIN, and how you plan to use the boat. If you are registering a used boat, include a bill of sale signed by both the previous owner and yourself, showing the date of sale and purchase price. If the boat came with a title from another state, bring that as well — Idaho will issue its own certificate of number regardless.

Registration costs and how long it takes

Idaho boat registration fees depend on the boat's length. Boats under 16 feet cost $15 for three years. Boats 16 to 26 feet cost $25. Boats over 26 feet cost $30. These are flat fees for the full three-year period, not annual charges. There are no additional county or local fees.

If you register in person at an IDPR office, you receive your certificate of number when ready. If you mail your process, allow 10 to 14 business days for processing. The certificate is valid for three years from the date of issue. You do not need to renew in person — renewals can be done online through the IDPR website if your information has not changed.

Where to register: in person, by mail, or online

The fastest option is to visit an Idaho Department of Parks and Recreation regional office in person. IDPR has offices in Boise, Coeur d'Alene, and Pocatello. Bring your completed process, proof of ownership, and the HIN. You will walk out with your certificate of number the same day.

To register by mail, send your completed process, proof of ownership, and a copy of the HIN to the IDPR Boating Bureau at 5657 Warm Springs Avenue, Boise, ID 83716. Include a check or money order for the registration fee. Processing takes 10 to 14 business days. For renewals only, you can renew online through the IDPR website if you have your current certificate number and the registration has not expired.

What happens if you buy a used boat with an existing Idaho registration

If the boat already has an active Idaho certificate of number, the previous owner must cancel it or transfer it to you. Ask the seller for the certificate number and their name as it appears on the registration. You will need to submit a bill of sale signed by both parties, showing the date of transfer and purchase price.

Take the bill of sale, the old certificate of number, and your completed process to an IDPR office or mail them in. IDPR will issue a new certificate in your name. The three-year period resets from the date of the new registration, so you are not inheriting the previous owner's expiration date. If the seller cannot locate the old certificate, IDPR can look it up using the boat's HIN.

Registering a boat titled in another state

If you bought the boat out of state and it has a title from another state, you do not need to transfer that title to Idaho. Idaho issues a certificate of number, not a title. Bring the out-of-state title, your bill of sale, and your completed process to an IDPR office or mail them in. IDPR will issue an Idaho certificate of number based on the HIN and your proof of ownership.

If you plan to keep the boat in Idaho permanently, some owners choose to register it in Idaho only and keep the out-of-state title as proof of ownership. Others maintain both. There is no requirement to choose one or the other — the certificate of number is what Idaho law requires for operation on Idaho waters.

Renewing your boat registration

Idaho boat registrations are valid for three years. You can renew online through the IDPR website if your information has not changed and your registration has not expired. You will need your certificate number and the last four digits of your Social Security number or tax ID. The renewal fee is the same as the original registration fee based on boat length.

If you prefer to renew by mail or in person, you can do that as well. Mail a renewal form (available on the IDPR website) and your fee to the Boating Bureau address, or visit an IDPR office. Renew before your certificate expires to avoid any gap in registration. If your registration has already expired, you will need to re-register rather than renew, which requires the same documents as a new registration.

Frequently Asked Questions

Do I need to register a canoe, kayak, or other non-motorized boat?

No. Idaho only requires registration for motorized boats and sailboats 12 feet or longer. Non-motorized boats under 12 feet, including canoes and kayaks, do not need to be registered. If your non-motorized boat is 12 feet or longer, you must register it.

What if I cannot find the hull identification number?

Contact the boat manufacturer with the model and year, and they can provide the HIN. If the boat is very old or the manufacturer is no longer in business, contact the previous owner. As a last resort, bring the boat to an IDPR office and staff can help you locate it or document its absence for the process.

Can I register a boat I am still paying off?

Yes. You can register a boat even if you have a loan on it. The lender does not need to sign the registration process. However, if the boat has a title from another state, the lender's name may appear on that title. Bring the title with you when you register.

What if I move out of Idaho but keep my boat registered here?

Idaho allows non-residents to register boats in the state. You do not need to be an Idaho resident to hold an Idaho certificate of number. If you move, update your address with IDPR by contacting the Boating Bureau or visiting an office. Your registration remains valid as long as you renew it before it expires.

How do I report a lost or stolen boat registration certificate?

Contact the IDPR Boating Bureau when ready. They can issue a duplicate certificate for a small fee. Bring your proof of ownership and the boat's HIN, or mail them with a request for a duplicate. Processing takes about one week.