How to fill out Wyoming Natrona County Bill of Sale

Wyoming publishes no statewide bill of sale. What it publishes instead is a wording, in the statute, for one narrow case - where a bank or an auto auction is holding the title - and county clerks publish their own forms for everything else. This is Natrona County's, and it is the shape most Wyoming counties use: an amount, a buyer, the vehicle, a warranty that the thing is free and clear of liens, the seller's signature, and a notary block underneath it. Its own county's checklist asks for a notarised bill of sale in some instances, and the sales tax counter reads it for the price. Treat it as the receipt that travels with the truck, not as a substitute for the assignment on the certificate.

Written against Natrona County Bill of Sale (no revision printed), issued under Natrona County Clerk, Casper; a bill of sale is accepted as proof of ownership under W.S. 31-2-103(a)(ix) and its statutory wording for held titles is at W.S. 31-2-104(h)(ii). The word title inside the phrase convey title to is doing less work than it looks like it is doing. In Wyoming a certificate of title moves only by the notarised assignment on the certificate itself, so a bill of sale conveying title is a receipt and a warranty, not a transfer. Sellers who hand over a signed bill of sale and promise to post the certificate later have given the buyer sixty days of trouble and themselves a vehicle still titled in their own name.

Two documents, and they are not the same thing. Take the blank Natrona County Bill of Sale from the natronacounty-wy.gov copy so you get the revision that is current today, then print our Natrona County Bill of Sale guide and keep it beside you while you fill theirs in.

Every line, in the order you meet it

1. 1
   You fill this in

   The amount, in the sentence

   The consideration you are acknowledging receipt of, written into the opening line.

   Watch out: Use the same figure you are about to write in section 3 of the certificate. Two numbers on two documents is a question at the tax counter and a phone call to you.

2. 2
   You fill this in

   Who you are conveying to

   The buyer's full legal name, exactly as it will appear in section 1 of the certificate.

   Watch out: Names as on the driving licence. A buyer who goes by a shortened first name on one document and a full one on the other has given the clerk two people.

3. 3
   You fill this in

   Year and make

   Two boxes only. There is nowhere on this form for a model, and none is needed.

   Watch out: Take them from the certificate rather than the tailgate badge - Wyoming's title records the make as the manufacturer prints it, and the trim level on the truck is not part of it.

4. 4
   You fill this in

   Seventeen cells, seventeen characters

   The vehicle identification number, one character to a box.

   Watch out: There are no I, O or Q characters in a modern identification number, so anything that looks like one is a 1 or a 0. Read it off the certificate, then check it against the door jamb.

5. 5
   You fill this in

   Sign above the warranty, in front of the officer

   Both seller lines are used where the vehicle has two owners. The sentence you are signing under warrants the vehicle free and clear of liens, debts and encumbrances.

   Watch out: Do this in the same visit as the certificate. One trip to the notary covers the assignment and this, and the county's own record then shows the same date on both.

6. 6
   Somebody else fills this in

   The officer completes the acknowledgement

   State, county, date, the names of the people who appeared, then the notary's signature, seal and commission expiry.

   Watch out: Check the expiry date before you leave. A commission that lapsed last month makes the acknowledgement worthless, and the clerk will notice before you do.

What gets this one rejected

• •Writing a price here that differs from the one in section 3 of the certificate. Both documents reach the same county courthouse, and the treasurer works the buyer's sales tax from what the parties recorded.
• •Warranting the vehicle free and clear while a lender is still printed on the front of the title. The sentence above your signature is a warranty, not a formality - sign it with an unreleased lien and you have handed the buyer a written misrepresentation.
• •Signing it before you meet the notary. The block underneath says the seller personally appeared - the same rule that governs the assignment governs this, and an officer cannot acknowledge a signature made yesterday.
• •Leaving cells empty in the identification number. Seventeen boxes want seventeen characters; a gap in the middle turns a proof of ownership into a document about no particular vehicle.
• •Treating it as the transfer. A bill of sale is evidence of ownership; the thing that actually moves a titled vehicle in Wyoming is the notarised assignment on the certificate, and a buyer who arrives at the clerk with only this will be sent back for the title.

Rules that decide whether it is accepted

• •There is no state form, and that is the answer rather than a gap. WYDOT's published MV series runs from the military plate application to the woman veteran decal and contains no bill of sale. The counties fill the space themselves, so the form you use is the one your county clerk publishes - or any document carrying the same facts.
• •One case has a wording fixed by statute. Where a bank or an auto auction is holding the title, the transferor must deliver a signed bill of sale in substantially the form printed at W.S. 31-2-104(h)(ii), and that document buys the buyer sixty days of legal operation instead of the ordinary forty-five. WYDOT reissued the wording to the county clerks and treasurers in September 2023.
• •The notary block is the county's belt and braces. Nothing in the title chapter requires an ordinary bill of sale to be notarised. Where it starts to matter is when a bill of sale is being used as proof of ownership in its own right - the bonded title route asks specifically for a notarised one, and the statute's own words for a title issued without a bond include a notarized bill of sale.
• •Two seller lines, no buyer line. This form is signed by the person letting the vehicle go. If you want the buyer's signature on something, that is section 4 of the certificate, where they swear their application.
• •Keep your copy. Wyoming has no notice of sale to file, so the copy in your drawer plus the notary's record is your evidence of when the vehicle stopped being yours.

Every line here was read off Natrona County Bill of Sale (no revision printed) itself — the PDF is here — and off the Wyoming Department of Transportation, Motor Vehicle Services pages. This is plain-language help with a form, not legal advice, and where our wording and the agency's differ, theirs governs.

Back to all Wyoming seller paperwork, or what selling a car in Wyoming involves.