Wisconsin boat registration is handled by the Department of Natural Resources, not your county clerk

Wisconsin requires registration for any boat with a motor, regardless of horsepower, and for sailboats 20 feet or longer. You register through the Wisconsin Department of Natural Resources (DNR), not through your vehicle registration office. The process is straightforward: you submit an process, proof of ownership, and a fee. Registration lasts three years and costs between $25 and $75 depending on boat length.

You can register in person at any DNR service center, by mail, or online through the DNR website. Online registration is the fastest route if you have all documents ready. The DNR will issue a registration number that must be displayed on both sides of your boat's hull.

Key Takeaways

  • All motorboats and sailboats 20 feet or longer must be registered with the Wisconsin DNR, not your county.
  • Registration costs $25 to $75 and lasts three years, with the fee based on your boat's length.
  • You need proof of ownership (bill of sale, manufacturer's certificate, or previous registration) and a completed process form.
  • Online registration through the DNR website is the fastest option if you have your documents ready.
  • Your registration number must be painted or attached to both sides of the hull in characters at least three inches tall.

What documents you need to register

The DNR requires proof that you own the boat. If you bought it new, bring the manufacturer's certificate of origin. If you bought it used, bring the bill of sale signed by the previous owner. If the boat was previously registered in Wisconsin, bring the old registration certificate. If it came from another state, bring the out-of-state registration or title.

You also need to complete the process for Boat Registration (form DNR 1002). This form asks for your name, address, the boat's description (length, manufacturer, hull identification number), and the motor details if applicable. You can read the form from the DNR website or pick one up at any DNR service center.

If someone else owns the boat but you are registering it on their behalf, bring a signed letter from the owner authorizing you to register it. The registration certificate will be mailed to the owner's address on file.

How to register online, by mail, or in person

Online registration is available through the DNR's licensing system. You create an account, enter your boat information, upload images of your proof of ownership, and pay the fee by credit card. The DNR typically processes online applications within five business days and emails your registration certificate. You do not need to wait for a physical certificate to use your boat — the email confirmation is valid.

Mail registration takes longer. Send your completed process form, proof of ownership, and a check or money order to the DNR address listed on the form. Include a self-addressed stamped envelope if you want the certificate mailed back to you. Processing by mail usually takes two to three weeks.

In-person registration at a DNR service center is the fastest if you need the certificate when ready. Bring your process form, proof of ownership, and payment. Staff will process it on the spot and issue a temporary registration number you can use right away. The permanent certificate arrives by mail within a few days.

Registration fees and how long registration lasts

Wisconsin registration fees are based on boat length and do not vary by county or DNR office. Boats under 16 feet cost $25. Boats 16 to 26 feet cost $40. Boats over 26 feet cost $75. These are the base registration fees; some DNR service centers may charge a small processing fee if you register in person.

Registration is valid for three years from the date issued. You do not renew annually — your certificate shows the expiration date, and you renew only when that date arrives. The DNR will not send you a renewal notice, so mark your calendar or check your certificate before taking the boat out.

Where to display your registration number

Your registration number must be painted or permanently attached to both the port (left) and starboard (right) sides of the hull. The characters must be at least three inches tall, in a contrasting color to the hull, and positioned so they are clearly visible. Do not paint the number on the transom (back) — it must be on the sides.

If your boat is a canoe, kayak, or other vessel without a motor and under 20 feet, you do not need to display a registration number. However, if you do register it, you must display the number.

Boats from out of state and temporary use

If you own a boat registered in another state and bring it to Wisconsin temporarily, you do not need to register it in Wisconsin when ready. You have 60 days to register it if you plan to keep it in Wisconsin. However, if you are just visiting — using the boat for a vacation or weekend trip — you can use your out-of-state registration for up to 60 days without registering in Wisconsin.

After 60 days, you must register the boat with the Wisconsin DNR. If you move to Wisconsin permanently or keep the boat here year-round, register it before the 60-day window closes.

What happens if you do not register

Operating an unregistered motorboat in Wisconsin is a violation. The DNR can issue a citation, which carries a fine. The amount varies depending on whether it is your first offense and the circumstances, but fines typically range from $75 to several hundred dollars. A conservation warden can stop you on the water to check your registration.

If you are selling a boat, the buyer is responsible for registering it. Make sure the bill of sale is signed and dated by both parties, and keep a copy for your records.

Frequently Asked Questions

Do I need to register a canoe or kayak?

No, unless it has a motor. Non-motorized boats under 20 feet do not require registration. Sailboats 20 feet or longer must be registered even without a motor.

What if I lose my registration certificate?

Contact the DNR and request a duplicate. You can do this online, by mail, or in person. Bring proof of ownership and payment for a replacement certificate. The DNR will issue a new one with the same registration number and expiration date.

Can I register a boat I am buying if the seller has not signed the bill of sale yet?

No. The DNR requires proof of ownership before issuing a registration. Make sure the bill of sale is signed and dated by the seller before you submit your process.

Do I need to register my boat if I only use it on private property?

If the boat has a motor, yes — Wisconsin requires registration regardless of where you use it. Non-motorized boats under 20 feet do not need registration even if used on public water.

How do I change my address on my boat registration?

Contact the DNR with your registration number and new address. You can update this online, by mail, or in person. You do not need to pay a fee for an address change, but the DNR will issue an updated certificate.