How to Register a Boat Without a Title in Michigan (2026)

First Question: Is a Michigan Title Required?

Michigan title rules are narrower than many buyers expect. The Secretary of State says a watercraft title is required only when the boat is 20 feet or longer or has a permanently affixed engine regardless of length.

That means some small boats with detachable outboard motors can be registered using proof of ownership instead of a title. A boat that should have a title, however, needs a title solution before the sale is treated as clean.

If you are not sure whether the boat is titleable, compare the hull length and engine type before paying the seller. Our Michigan title transfer guide covers the title path.

Proof of Ownership Michigan SOS Accepts

For registration, Michigan lists several proof-of-ownership options. Which one fits depends on whether the boat was previously registered, newly manufactured, titleable, documented, or missing standard paperwork.

Bring your license or ID and payment for registration, title when required, and 6% sales or use tax unless proof of tax paid or an exemption applies.

Using a Bill of Sale for a Non-Titled Boat

A bill of sale is most useful when the boat is not required to be titled, or when it supports another ownership document. Keep it specific enough for the Secretary of State to match the boat and the parties.

If the seller has the old registration card, have the seller sign the registration as Michigan describes. Keep the bill of sale even when the signed registration is accepted.

When Surety Bond or Self-Certification Applies

Michigan lists a surety bond path for watercraft valued at more than $2,500 and a self-certification procedure for watercraft valued at $2,500 or less. These are fallback proof-of-ownership paths when normal paperwork is missing.

Do not treat a bond as a cure for every risky sale. If the boat should have a title and the seller can obtain a duplicate, that is usually cleaner than asking the buyer to solve the ownership gap later.

Before using any fallback path, confirm the boat is not stolen, the HIN has not been altered, and there is no unresolved lien.

USCG Documented Boats

For USCG documented vessels, Michigan says the Certificate of Documentation serves as proof of ownership and no state title is needed. Michigan registration is still required when the documented vessel must be registered in Michigan.

If a documented boat is being bought or moved into Michigan, bring the documentation certificate and any sale records to the Secretary of State office so the registration can be handled correctly.

When to Walk Away

Be cautious if the HIN is missing or altered, the seller refuses a bill of sale, the seller cannot explain ownership, a lien is unresolved, or the price only makes sense because the paperwork is broken.

For used purchases, verify the HIN on the hull, keep photos of the documents, and use our boat lien check guide before paying for a boat with missing paperwork.