A Wyoming vehicle bill of sale is a written record that proves a car, truck, motorcycle, trailer, or other motor vehicle has legally passed from a seller to a buyer in the state of Wyoming. It is the document a buyer brings to the county treasurer’s office to register a newly purchased vehicle, and it is the seller’s proof that they no longer own the vehicle.
This single page does a lot of work. It locks in the sale price for tax purposes, it identifies the exact vehicle by its VIN, and it can stand in for a title for up to 60 days while the real title catches up. Get one field wrong, and a buyer can be turned away at the treasurer’s counter, charged the wrong amount of sales tax, or stuck with a vehicle they cannot legally drive. Wyoming titles more than 600,000 vehicles a year through its 23 county treasurers, and a missing or sloppy bill of sale is one of the most common reasons a transfer gets delayed.
Here is what you will learn in this guide:
- 📝 How to fill out every line of the Wyoming bill of sale, word for word
- 🚗 How to handle a sale when the bank or lender still holds the title
- 🧾 How much sales and use tax you will owe and how the price you write matters
- ⚖️ Which Wyoming statutes control the form and what happens if you skip them
- ❓ Answers to the most common buyer and seller questions, including notary confusion
What the Form Is and Who Must File It
The Wyoming vehicle bill of sale is a transfer-of-ownership document for motor vehicles. It names the seller, names the buyer, describes the vehicle, states the price, and records the date of sale. Wyoming does not force every private seller to use one single state-printed form, so the Wyoming Department of Transportation and the 23 county treasurers accept any bill of sale that contains the required information. Many counties, such as Campbell, Carbon, and Natrona, publish their own fill-in version, and those are the cleanest to use because the treasurer who receives it designed it.
The form matters most to two people. The first is the seller, who needs proof they handed off the vehicle so they are not blamed for a parking ticket, a toll, or a crash that happens after the sale. The second is the buyer, who cannot register the vehicle or get plates without a bill of sale in hand.
The legal backbone of the form is W.S. 31-2-104, the Wyoming statute on certificates of title. Subsection (h)(ii) allows a buyer to operate a newly bought vehicle for up to 60 days using a properly executed bill of sale in place of the title. The same statute, at subsection (j), requires that when a seller does not have the title at the moment of sale, a properly executed title free of liens must reach the buyer within 30 days.
A misconception worth clearing up early is that a bill of sale by itself transfers ownership for good. It does not. It is a bridge document; the buyer must still apply for a new Wyoming title in their own name to become the legal owner of record.
Before You Start: Documents and Information You Need
Filling out the form takes ten minutes if you gather everything first and an hour of back-and-forth if you do not. Both parties should sit down with the items below before anyone signs.
- The vehicle title. You need it to copy the exact VIN, year, make, and model; if the seller does not have it yet, you must name who does (a bank or lender) on the form.
- The Vehicle Identification Number (VIN). A single wrong character makes the bill of sale fail to match the title, and the treasurer will reject it.
- The odometer reading. State and federal law require mileage disclosure at sale, and a missing reading can void the transfer for vehicles under the federal age limit.
- The agreed sale price. This sets the sales and use tax the buyer pays, so guessing or rounding can cost or save real money.
- Full legal names and addresses of both parties. These must match each person’s ID, or the treasurer cannot verify the signers.
- A government-issued photo ID for each party. The buyer needs it to register, and a notary needs it to confirm identity.
- Proof of Wyoming auto insurance for the buyer. Registration requires liability coverage of at least $25,000 per person, $50,000 per accident, and $20,000 for property damage.
- The date of sale. This starts the 60-day operating clock and the buyer’s registration deadline.
- Lien or payoff information. If a lender holds the title, you need the lender’s name and the payoff status to complete the 30-day delivery line.
- A notary, if your county wants one. Several Wyoming county forms include a notary block, so check before you sign.
If any item is missing, stop. A bill of sale with a blank price, a wrong VIN, or no signature is not “properly executed,” and the buyer loses the right to drive on it under W.S. 31-2-104.
Where to Get the Form and How to Access It
Wyoming spreads vehicle titling and registration across its 23 county treasurers, so there is no single statewide download button for one official bill of sale. The cleanest path is to pull the WYDOT DMV forms page and your county treasurer’s page together, then use the bill of sale your county prints. You can find your office through the Wyoming county treasurers directory.
You have three easy ways to get a usable form. The first is your county treasurer’s website, where counties like Campbell County and Carbon County post a ready-to-print PDF. The second is a reputable legal template site, such as the Wyoming motor vehicle bill of sale, which produces a state-compliant form. The third is to walk into the treasurer’s office and ask for a paper copy at the counter.
Use the county form when you can. A bank’s generic bill of sale or an out-of-state template may leave out the 30-day title line or the notary block your county wants, and a missing field means a second trip.
A common mistake here is grabbing a bill of sale meant for a boat, a firearm, or general personal property and using it for a car. Those forms lack the VIN line and the title-delivery language, and the treasurer will hand it back. Always confirm the words “vehicle” or “motor vehicle” appear at the top before you fill anything in.
Step-by-Step: How to Fill Out the Wyoming Vehicle Bill of Sale Line by Line
The Wyoming bill of sale is short, but every line carries weight. Work through them in the order they appear on the page. The walkthrough below follows the standard county format, which is the most widely accepted version across the state. Print clearly in blue or black ink, and never use pencil.
1. Seller, Transferor, or Auctioneer Name
This first line asks who is selling the vehicle. In plain English, it wants the full legal name of the person or business giving up the car.
Write the seller’s full legal name exactly as it appears on the title and on their photo ID. Use first, middle, and last name, and spell out a business name in full if a company owns the vehicle. For example, Dale R. Henderson writes his name on this line, matching his Wyoming driver’s license.
A common edge case is two owners on the title. If the title reads “Dale Henderson AND Brenda Henderson,” both names must appear and both must sign later, because the word “AND” means the treasurer needs both signatures to release the vehicle.
The most common mistake on this line is using a nickname or maiden name that does not match the title. If “Dale” signs as “Buddy,” the treasurer cannot confirm the seller is the titled owner, and the transfer stalls. A misconception people hold is that the name here can be informal because “everyone knows who I am”; the treasurer does not know you, and the document must stand on its own.
2. Date of Sale
This field asks for the calendar day the vehicle changes hands. It is the day money and keys move, not the day you printed the form.
Write the date in month, day, year order, such as 06/06/2026. Keep it consistent with the date you sign at the bottom, because two different dates raise a red flag.
An edge case appears when the buyer pays a deposit one week and the balance the next. Use the date the buyer takes possession and pays in full, since that is the true transfer date for the 60-day operating clock under W.S. 31-2-104.
The common mistake is leaving this blank or backdating it. A blank date means no one can prove when the registration deadline started, and backdating to dodge a late fee is a misrepresentation on a signed document. A misconception is that the date does not matter much; in truth, it starts both the 60-day drive window and the 30-day title-delivery clock.
3. Interest Being Conveyed
This line states that the seller is giving up “all interest” or a share of interest in the vehicle. It confirms how much of the ownership is moving to the buyer.
For a normal full sale, the standard language already says the seller conveys all of their interest, so you simply confirm it. If only a part owner is selling a share, name the co-owner whose interest is or is not included.
An edge case is a divorce or estate sale where one spouse or heir sells their half. The form should name the other interest holder so the treasurer knows whether a second signature is still needed.
The common mistake is assuming “all interest” when a co-owner has not agreed to sell, which creates a clouded title the buyer cannot register. A misconception is that one owner can always sell the whole vehicle; with an “AND” title, one owner cannot.
4. Vehicle Description: Year, Make, Model, and VIN
This is the heart of the form. It asks you to identify the exact vehicle by its year, make, model, and Vehicle Identification Number.
Copy each item straight from the title, not from memory or from the registration card. Write the Year (for example, 2018), the Make (for example, Toyota), the Model (for example, Tacoma), and the full 17-character VIN (for example, 5TFCZ5AN9JX123456). Double-check the VIN character by character.
An edge case is older or custom vehicles with shorter VINs, or trailers with a homemade VIN. Write whatever appears on the title exactly, even if it is not 17 characters, because the treasurer matches the form to the title, not to a standard format.
The most damaging mistake on the whole form lives here: a single wrong VIN digit. If the VIN does not match the title, the treasurer rejects the transfer and the buyer cannot register. A misconception is that the license plate number can stand in for the VIN; it cannot, because plates move and VINs do not.
5. Purchaser (Buyer) Name
This line asks who is buying the vehicle. It wants the full legal name of the person or business taking ownership.
Write the buyer’s full legal name exactly as it will appear on the new title and registration. For example, Maria L. Cordova writes her name here, matching her Wyoming ID.
An edge case is a buyer who wants the vehicle titled in two names, such as a married couple. List both buyers here and decide whether the title should read “and” or “or,” because that choice controls who must sign to sell later.
The common mistake is writing the buyer’s mailing nickname or an abbreviated business name that does not match the registration application. That mismatch forces the buyer to redo paperwork at the counter. A misconception is that the buyer’s name can be added later; an unsigned, unnamed buyer line is an incomplete document.
6. Sales Price
This field asks how much the buyer paid for the vehicle. It is the number the county uses to calculate sales and use tax.
Write the exact agreed price in dollars, such as $14,500. If the vehicle is a gift, write $0 or the word gift, and if it is a trade, describe the trade and any cash difference.
An edge case is a vehicle sold far below market value to a family member. Wyoming counties can question a price that looks too low, so a genuine gift should say “gift,” and a real low-price sale should be honest, because the treasurer may assess tax on fair market value if the number looks off.
The common mistake is understating the price to lower the tax bill. That is tax fraud, and the county can reassess and penalize the buyer. A misconception is that the price is private; it is right there on the document the buyer hands the treasurer, and it directly sets the tax.
7. Title Holder and 30-Day Delivery Statement
This part is unique to Wyoming and trips up many sellers. It asks who currently holds the certificate of title and confirms that a clean title will reach the buyer within 30 days.
State who holds the title on the blank line. If the seller has the title in hand, write the seller’s name; if a bank or lender holds it because of a loan, write the lender’s name, such as First Interstate Bank. The form then promises that within thirty days the purchaser, for example Maria L. Cordova, will receive a properly executed title free of all liens unless the bill of sale says otherwise.
The key edge case is a financed vehicle. When a lender holds the title, the seller must pay off the loan so the lender releases the title to the buyer inside the 30-day window required by W.S. 31-2-104(j). If a lien will remain, you must spell that out here.
The common mistake is leaving this line blank on a financed car, which leaves the buyer with no proof the title is coming and no legal owner of record. A misconception is that the buyer can title the vehicle on the bill of sale alone forever; the bill of sale only buys 60 days of operating time, and a real title must follow.
8. Odometer Disclosure
Although not always on the same page, an odometer reading is required by state and federal law at the time of sale. It records how many miles the vehicle has traveled.
Write the exact mileage shown on the dashboard, such as 96,432, and mark whether it is the actual mileage, exceeds the odometer’s limit, or is not the actual mileage. Some counties place this on the title instead of the bill of sale, so use whichever your county directs.
An edge case is a vehicle over 20 model years old, which federal rules generally exempt from odometer disclosure. Even then, recording the mileage protects both parties from a later dispute.
The common mistake is rounding or guessing the mileage, which can be treated as odometer fraud under federal law. A misconception is that mileage only matters to the buyer; a false reading exposes the seller to federal penalties.
9. Seller’s Signature and Date
This line is where the seller makes the document binding. It asks the seller, transferor, or auctioneer to sign and date the form.
The seller signs their name and writes the date of signing, which should match the date of sale in Field 2. If two owners are on an “AND” title, both must sign here.
An edge case is an agent signing for the seller. That agent needs a Motor Vehicle Power of Attorney on file, or the treasurer will not accept the signature.
The common mistake is the seller signing but forgetting the date, or one co-owner signing for both. Either gap can void the transfer at the counter. A misconception is that a typed name counts as a signature; the treasurer wants an ink signature from the actual owner.
10. Notary Acknowledgment
Many Wyoming county forms end with a notary block stating that the instrument was acknowledged before a notary on a given day. It exists to confirm the seller is who they claim to be.
If your county form has this block, sign the bill of sale in front of a Wyoming notary public, who then completes the date, the signer’s name, the notary signature, the seal, and the commission expiration. Do not sign the notary section ahead of time.
The important nuance is that Wyoming law does not require the bill of sale itself to be notarized in every case, but the title assignment usually must be notarized, and several counties want the bill of sale notarized too. When in doubt, notarize, because a notarized form is accepted everywhere while an un-notarized one may be refused by a stricter county.
The common mistake is signing the notary block at home, which the notary cannot certify and which makes the block worthless. A misconception is that notarization is never needed in Wyoming; for the title transfer and many county bills of sale, it is, so plan for it.
Three Filled-Out Examples Using Real Scenarios
Real sales rarely look like a blank form. The three walkthroughs below follow named buyers and sellers through the entire document so you can see exactly what goes in each field.
Scenario 1: Clean Private Sale With Title in Hand
Dale Henderson of Gillette sells his paid-off pickup to Maria Cordova. He has the title in his pocket, so there is no lender and no waiting.
| Form Section | What Dale and Maria Enter |
|---|---|
| Seller name | Dale R. Henderson |
| Date of sale | 06/06/2026 |
| Interest conveyed | All interest |
| Year / Make / Model | 2018 Toyota Tacoma |
| VIN | 5TFCZ5AN9JX123456 |
| Purchaser name | Maria L. Cordova |
| Sales price | $14,500 |
| Title holder + 30-day line | Dale R. Henderson; title delivered at sale, free of liens |
| Odometer | 96,432 actual miles |
| Seller signature / notary | Dale signs before a Campbell County notary |
Maria takes this form, the signed title, her ID, and proof of insurance to the Campbell County Treasurer to title and register the truck.
Scenario 2: Financed Vehicle, Bank Holds the Title
Brenda Walsh of Laramie still owes money on her SUV, and First Interstate Bank holds the title. She sells to Marcus Lee and must use the 30-day delivery provision.
| Form Section | What Brenda and Marcus Enter |
|---|---|
| Seller name | Brenda K. Walsh |
| Date of sale | 06/06/2026 |
| Interest conveyed | All interest |
| Year / Make / Model | 2021 Ford Explorer |
| VIN | 1FMSK8DH7MGA98765 |
| Purchaser name | Marcus T. Lee |
| Sales price | $26,900 |
| Title holder + 30-day line | First Interstate Bank holds title; clean title to Marcus within 30 days |
| Odometer | 41,008 actual miles |
| Seller signature / notary | Brenda signs before an Albany County notary |
Brenda uses part of the sale money to pay off her loan, the bank releases the title, and Marcus drives on the bill of sale for up to 60 days while he waits, as allowed by W.S. 31-2-104.
Scenario 3: Gift of a Vehicle to a Family Member
Robert Ortiz of Casper gives his old sedan to his daughter, Sofia Ortiz, for nothing. The price is $0, but the form still matters for titling and tax.
| Form Section | What Robert and Sofia Enter |
|---|---|
| Seller name | Robert J. Ortiz |
| Date of sale | 06/06/2026 |
| Interest conveyed | All interest |
| Year / Make / Model | 2012 Honda Civic |
| VIN | 2HGFB2F50CH334411 |
| Purchaser name | Sofia M. Ortiz |
| Sales price | $0 (gift) |
| Title holder + 30-day line | Robert J. Ortiz; title delivered free of liens |
| Odometer | 148,775 actual miles |
| Seller signature / notary | Robert signs before a Natrona County notary |
Sofia brings the form to the Natrona County Treasurer, where she may owe little or no sales tax on a true gift but still pays registration fees.
How to File the Completed Form
In Wyoming, you do not mail the bill of sale to a central DOT address. The buyer files it at the county treasurer’s office to title and register the vehicle, so the “filing” is really the registration appointment. Below are the channels available across the state.
In person at the county treasurer. This is the main channel. The buyer brings the bill of sale, the assigned title, an Application for Certificate of Title (MV-300A), a valid ID, proof of Wyoming insurance, and an odometer statement. The treasurer collects sales or use tax and registration fees, which vary by county, and most accept cash, check, and often card. Processing is usually same-day, and your proof of filing is the registration receipt and license plates or temporary tag you walk out with.
By mail to the county treasurer. Some counties let you mail copies of the bill of sale, title, application, and a check for fees. Use the mailing address listed on your county treasurer’s page, expect one to three weeks, and keep your mailing receipt and a copy of everything as proof.
Online or by drop box. A few larger counties offer renewals online, but a first-time title transfer from a private sale almost always needs the original documents, so call ahead. When a county allows electronic submission, your confirmation email or upload receipt is your proof of filing.
The smartest move is to call your county treasurer first, confirm the exact fees with their fee calculator or schedule, and ask whether they want the bill of sale notarized. Wyoming sales and use tax on vehicles is generally 4% state plus the local county rate, so a $14,500 truck can carry well over $700 in tax due at registration.
What Happens After You File
Once the treasurer accepts your paperwork and payment, the county sends your title application up the chain and the state issues a new Wyoming certificate of title in the buyer’s name. The buyer walks out the same day with registration and plates in most counties, so the vehicle is legal to drive right away.
The title itself arrives later by mail, often within a few weeks. If a lender financed the purchase, the title may list the lienholder and be mailed to them until the loan is paid. The buyer should store the bill of sale with their records, because it is the proof of price if the county ever questions the tax paid.
The seller’s job is not fully done either. The seller should keep their copy of the bill of sale forever, since it proves the date they stopped owning the vehicle. If a citation, toll, or crash report shows up afterward, that signed and dated form is the seller’s defense.
A common after-filing surprise is a tax bill that is higher than expected because the county taxed the fair market value rather than a too-low stated price. Keeping an honest sale price on the form is the simplest way to avoid that.
Mistakes to Avoid When Filling Out the Form
Each line on this short form is its own chance to slip. Here are the errors that most often send people back for a second trip.
- Wrong VIN. A single off character means the form will not match the title, and the treasurer rejects the transfer.
- Blank sale price. With no price, the county cannot set the tax, and the document is incomplete.
- Understating the price. This is tax fraud, and the county can reassess and add penalties.
- Missing date of sale. Without it, no one can prove when the 60-day and 30-day clocks started.
- Nickname instead of legal name. A name that does not match the ID stops the treasurer from verifying the signer.
- Only one signature on an “AND” title. Both owners must sign, or the vehicle cannot be released.
- Leaving the 30-day title line blank on a financed car. The buyer is left with no proof the title is coming.
- Signing the notary block at home. A notary cannot certify a signature they did not witness, voiding the block.
- Guessing the odometer reading. A false mileage can be treated as odometer fraud under federal law.
- Using a non-vehicle bill of sale. Boat or general property forms lack the VIN and title lines and will be refused.
- Writing in pencil. Pencil can be altered, so the treasurer may reject it as not properly executed.
- Forgetting proof of insurance. Without Wyoming liability coverage, the buyer cannot register even with a perfect form.
Do’s and Don’ts
A few simple habits keep the whole process smooth for both buyer and seller.
Do:
- Do copy the VIN straight from the title, because matching the title exactly is what gets the form accepted.
- Do use your full legal name, since the treasurer checks it against your ID.
- Do write the true sale price, because the tax is built on that number and honesty avoids penalties.
- Do make two signed copies, so the buyer and the seller each keep proof.
- Do notarize when your county asks, because a notarized form is accepted everywhere.
- Do call the county treasurer first, since fees, deadlines, and notary rules vary by county.
Don’t:
- Don’t backdate the form, because it misstates when the legal clocks started and is a misrepresentation.
- Don’t lowball the price for tax reasons, since the county can reassess at fair market value.
- Don’t leave the 30-day title line blank on a financed vehicle, or the buyer has no title protection.
- Don’t sign in pencil or erasable ink, because it looks alterable and may be rejected.
- Don’t lose your copy, since the seller may need it years later to prove the sale date.
- Don’t drive past 60 days on the bill of sale alone, because the operating window under state law runs out.
Pros and Cons of Handling the Sale on Your Own vs. With Help
Most private sellers fill out the bill of sale themselves, but some bring in a notary service, a dealer, or a title agent. Here is how the two paths compare.
Pros of doing it yourself:
- It costs nothing, because the form is free from your county or a template site.
- It is fast, since a clean private sale form takes ten minutes to complete.
- You control the details, so the names, price, and VIN are exactly what you intend.
- It builds your own record, giving you a copy you understand and can defend.
- No appointment is needed to fill it out, only to file it at the treasurer.
Cons of doing it yourself:
- You can miss the 30-day title rule on a financed car and leave the buyer exposed.
- You may skip the notary a stricter county requires and have to redo it.
- VIN or price errors are easy and cost a second trip.
- You handle the lien payoff alone, which is harder when a bank holds the title.
- You carry the tax and fraud risk if the price is wrong.
A buyer who is nervous about a financed vehicle, a salvage title, or an out-of-state title may find that paying a title service or asking the treasurer’s staff to review the documents first is worth the small cost.
Wyoming Bill of Sale vs. Wyoming Title Assignment
People often confuse the bill of sale with the title transfer. They are different documents that work together.
| Wyoming Bill of Sale | Wyoming Title Assignment |
|---|---|
| Proves the sale happened and records the price | Legally transfers ownership of record |
| Can stand in for the title for up to 60 days | Is the permanent ownership document |
| Notary required only in some counties | Title assignment usually must be notarized |
| Names buyer, seller, vehicle, and price | Names new owner and any lienholder |
| Kept by both parties as proof | Filed with the treasurer and reissued by the state |
FAQs
Is a bill of sale required to sell a car in Wyoming?
Yes. A bill of sale is needed for a private vehicle sale because the buyer must present it to the county treasurer to title and register the vehicle in their name.
Does the Wyoming bill of sale have to be notarized?
No. State law does not require notarization of the bill of sale in every county, but several counties want it, and the title assignment usually must be notarized, so notarize when in doubt.
Can I drive a car I just bought using only the bill of sale?
Yes. Under W.S. 31-2-104, a buyer may operate a newly purchased vehicle for up to 60 days on a properly executed bill of sale while waiting for the title.
What do I write in the sales price box if the car is a gift?
Yes, you still complete it: write $0 or the word gift so the treasurer knows it is not a normal sale and can apply the correct tax treatment.
Do I write the VIN from the title or the registration card?
Yes, use the title: copy the VIN exactly from the certificate of title, because the treasurer matches the bill of sale to the title, not to the registration card.
What name do I write on the seller line if two people own the car?
Yes, list both: write both owners’ full legal names, and if the title says “AND,” both owners must also sign for the sale to be valid.
Do I need the odometer reading on the bill of sale?
Yes. State and federal law require mileage disclosure at sale, though some counties record it on the title instead, so use whichever your county directs.
What happens if the bank still has my title when I sell?
Yes, you can still sell: name the bank as the title holder and promise a clean, lien-free title to the buyer within 30 days, as the statute requires.
Can I lower the price on the form to pay less sales tax?
No. Understating the price is tax fraud, and the county can reassess tax at fair market value and add penalties.
Where do I file the completed bill of sale in Wyoming?
Yes, at the county level: bring it to your county treasurer’s office to title and register the vehicle, since Wyoming handles vehicle transfers by county.
How much sales tax will the buyer pay?
Yes, expect tax: Wyoming charges a 4% state sales or use tax plus the local county rate on the sale price, collected by the treasurer at registration.
Can someone sign the bill of sale for me?
Yes, with paperwork: an agent may sign if a Motor Vehicle Power of Attorney is on file with the treasurer, or the signature will be rejected.
Do I need a separate bill of sale for a trailer or motorcycle?
Yes. A trailer, motorcycle, or other motor vehicle uses the same vehicle bill of sale, completed with that unit’s own VIN, year, make, and model.
How many copies of the bill of sale should I make?
Yes, make two: the buyer keeps one to register and prove price, and the seller keeps one to prove the date ownership ended.
Related reading
- How to Fill Out Oregon DMV Bill of Sale (w/Examples) + FAQs
- How to Fill Out Hawaii County DMV Vehicle Bill of Sale (w/Examples) + FAQs
- How to Fill Out the Wyoming DOT Application for Certificate of Title (Form MV-300A) + FAQs
- How to Fill Out Wyoming DOT Application for Duplicate Title + FAQs
- How to Fill Out the Wyoming DOT Odometer Disclosure Statement + FAQs
- How to Fill Out the Wyoming DOT Vehicle Registration Application + FAQs
- How to Fill Out Delaware DMV Application for Duplicate Title (Form MV213) + FAQs