You fill out a bill of sale for a car by listing the buyer's and seller's full legal names, the vehicle identification number, the make and model, the odometer reading, the sale price and date, and then both parties sign and date the form. Do this at the moment of sale, and each person keeps a signed copy. That is the direct answer, and if you do nothing else, you have protected both sides of the transaction.
I have watched a lot of private sales go sideways over a missing signature or a VIN that was copied wrong. One pattern we see from people using our documents is that the person who fills the bill of sale out in a hurry while standing in a parking lot almost always forgets the odometer line or uses a nickname instead of a legal name. Then the DMV rejects the title transfer and the seller's phone starts ringing two weeks later. So let's go line by line so you never make that call.
What each field on the bill of sale actually does
A motor vehicle bill of sale is not a title. It does not transfer ownership by itself, and it does not replace the title assignment on the back of a title certificate. What it does is create a paper trail of the sale. It proves who sold what to whom, for how much, on what date, and with what odometer reading. In most states, the buyer will need this piece of paper to register the car and pay sales tax. If you are the seller, it protects you from being blamed for tickets or accidents that happen after the sale. That protection only works if the form is filled out correctly.
Here is the field by field walkthrough. Most printable bill of sale forms use similar wording, but the order can differ.
- Seller's full legal name and address - Use the name exactly as it appears on the title. If the title says Robert J. Smith, do not write Bob Smith. The address should be the seller's current mailing address, not a PO box unless the title also shows that PO box.
- Buyer's full legal name and address - Same rule. The buyer needs to match the name they will put on the title application. A nickname or a spouse's name will cause problems later.
- Vehicle identification number (VIN) - Copy this directly from the metal plate on the dashboard or the driver's side door jamb, not from an old insurance card. A single wrong character will stall the title transfer.
- Year, make, and model - Be specific. A 2010 Honda Civic is different from a 2010 Honda Civic LX. Include the trim if you know it, but the basic year, make, and model is enough for the DMV.
- Odometer reading - This is a federal requirement for vehicles under 10 years old, but you should fill it out for every sale. Write the exact miles shown on the odometer, not a rounded number. If the odometer has rolled over or is broken, you have to check a box that says the mileage is not actual. Do not guess.
- Sale price - Write the full amount in dollars, nothing hidden. If you sold the car for $4,500 and the buyer gave you $4,000 cash plus a $500 trade item, the sale price is the cash amount only. The state wants to know the money that changed hands for tax purposes. If the car was a gift, write $0 and note that it was a gift.
- Date of sale - This is the date the money and keys change hands, not the date you signed the title. The buyer will need this date for the title application, and the seller's liability for the car ends on this date in most states.
- Signatures - Both buyer and seller sign and print their names below the signature. Do not let one person sign for the other. In some states, a notary is required, but even where it is not, a witness or notary stamp adds proof that the signatures are real.
One line people skip is the seller's disclosure about the vehicle's condition. If your bill of sale has a line that says "sold as is" or "no warranties," make sure both parties initial it. That single line has ended arguments about whether the seller promised a new transmission.
A real sale filled out from start to finish
Let me walk through a realistic private sale so you can see the order of operations. Jane is selling her 2012 Toyota Corolla to Mike. They meet on a Saturday morning. Mike test drives the car, likes it, and they agree on $5,200. They do not go to a bank or a notary, just Jane's kitchen table.
Jane opens the bill of sale on her phone and prints a blank copy, or she pulls out a paper form she bought at an office supply store. Before touching the form, Jane and Mike both get out their driver's licenses and the car's title. Jane writes her full legal name, the same name printed on the title, and her current address. Mike writes his full name and address, the same name he will use at the DMV.
Jane walks out to the car and reads the VIN from the driver's side dashboard. She reads it twice, out loud, and Mike checks the title to make sure it matches. One wrong digit means the DMV will reject everything. Jane writes the VIN on the form. Then she writes the year, make, model, and the odometer reading from the gauge cluster: 112,430 miles. She does not round up or down.
Jane writes the sale price as $5,200, and the date as today's date. Both of them sign and print their names. Jane makes two copies, gives one to Mike, and keeps one for herself. Mike pays her and takes the keys. Jane also fills out the seller's portion on the back of the title and gives Mike the title. In California, Jane would also file a Notice of Transfer and Release of Liability with the DMV within five days. But the bill of sale is already done, and it is the piece of paper Mike will show at the DMV to prove what he paid.
Three months later, a parking ticket shows up in Jane's mailbox with the Corolla's plate number and a date after the sale. Jane sends a copy of her signed bill of sale to the parking authority and the ticket goes away. That is why the bill of sale exists for the seller, not just the buyer.
Why your state DMV wants this piece of paper
The bill of sale is not filed with a court or stored in a government vault. It gets submitted to the state DMV or county tax office as part of the title and registration paperwork. The state uses it for three things: to calculate the sales tax the buyer owes, to document the odometer reading for future buyers, and to establish the chain of ownership if the title ever has a problem.
When you skip the bill of sale, the DMV usually asks for one anyway. If you cannot provide it, some states accept a written statement from both parties, but that takes longer and raises red flags. The sales tax is the biggest reason the state cares. If you write a bill of sale that says you paid $2,000 for a car that is clearly worth $6,000, the DMV may reject the low amount and tax you on the fair market value. That is called a presumptive value or standard presumptive value in some states. The bill of sale is your chance to explain a genuinely low selling price, like body damage or a bad engine, and avoid paying tax on money you did not actually spend.
The odometer reading on a bill of sale also feeds into the federal odometer database. When the next buyer looks up the car's history, they want to see a steady increase in miles. A missing odometer line or a reading that jumps backward can make the car look like a rolled back odometer, even if nothing wrong happened.
How three states handle the bill of sale differently
Every state has its own quirks, and if you sell a car across state lines, you need to know the buyer's state rules as much as your own.
In California, the DMV strongly recommends a bill of sale for private party sales, but the title itself can serve as the bill if it has the sale price and odometer reading filled out. The seller must file a Notice of Transfer and Release of Liability with the California DMV within five days of the sale. The buyer then takes the signed title and a completed Application for Title or Registration to a DMV office. If the title does not show the sale price, the buyer will need a bill of sale or a Reg 135 form. The DMV will calculate use tax based on the sale price or the fair market value, whichever is higher.
In Texas, the buyer handles the title transfer at the county tax assessor-collector's office, not a state DMV branch. The seller signs the title and gives it to the buyer along with a bill of sale if one was used. The buyer files a Form 130-U, Application for Texas Title, and the county tax office collects motor vehicle sales tax based on the sale price. If the sale price seems too low, the county uses the standard presumptive value from the Texas DMV database. A bill of sale that explains a lower price, like major mechanical issues, can help the buyer pay tax on the actual amount.
In New York, the DMV has its own bill of sale form, MV-912, for vehicles model year 1973 or newer. Private sellers and buyers fill out this form, and it must include the odometer reading. The buyer uses it to register the car at a DMV office, and the seller should remove the license plates before the buyer drives away. New York also requires the buyer to get insurance before registering, and the bill of sale is part of the paperwork package that includes the title and proof of identity.
Those are just three examples. Before you sell or buy, check your own state DMV website for the exact form number and whether a notary is required. A bill of sale from a generic website usually works in all 50 states, but a state-specific form can save you a second trip to the office.
Edge cases people actually hit
Private party car sales are rarely simple, and the bill of sale has to bend to fit the situation.
Private party versus dealer sale
A dealer will give you a stack of paperwork, and the bill of sale is usually a preprinted form with the dealer's name and license number. You do not need to bring your own bill of sale to a dealership. But for a private sale, a generic bill of sale is the fastest way to document the deal. The rules about odometer disclosure and title transfer are the same no matter who you buy from.
Out-of-state buyer
If you sell a car to someone from another state, the buyer will need a bill of sale that meets their home state's requirements. Most states accept a generic bill of sale, but some require a specific form or a notary. The buyer should check before they travel. As the seller, you should still fill out your state's release of liability if your state has one. The bill of sale should include both parties' addresses so the buyer's DMV knows where the car is going.
A lien still on the title
You cannot sell a car with a lien on it and just hand over a bill of sale. The lender holds the title, and the buyer cannot register the car until the lien is released. The bill of sale should not be used to hide a lien. If you still owe money, pay off the loan and get the lien release before you sell. Some states allow the buyer and seller to meet at the lender's office to pay off the loan and transfer the title in one sitting, but the bill of sale will not remove the lien by itself.
Gift between family members
If you give a car to a relative, most states still require a bill of sale or a gift affidavit. You write the sale price as $0 and note "gift" on the form. The buyer or recipient may still owe use tax on the fair market value unless the state exempts family gifts. Check your state's rules before you write $0, because some states only allow a gift exemption for parents, children, or spouses.
Joint owners listed on the title
If the title lists two owners with an "and" between their names, both owners must sign the bill of sale and the title. If the names are joined by "or," either owner can sign. The bill of sale should show both names exactly as the title does. Forgetting one signature means the buyer will not be able to transfer the title.
What goes wrong when you skip a line or fill it wrong
The most common mistake I see is a VIN with one wrong character. The DMV rejects the title application, and the buyer has to track down the seller for a corrected bill of sale. If the seller has moved or changed phone numbers, the buyer is stuck with a car they cannot register.
A missing odometer reading can trigger a federal odometer disclosure violation if the car is less than 10 years old. The buyer may suspect the seller rolled back the odometer, and the seller may have to prove they did not. A bill of sale with the odometer reading written at the time of sale is the best evidence you have.
A sale price that is left blank or written as $0 when money did change hands can lead to a tax bill for the buyer. The DMV may assume the fair market value and tax the buyer on that amount, which can be hundreds of dollars more than the actual sale price. Writing a low number to help the buyer save tax is fraud, and it puts both parties at risk.
A missing signature or a nickname can void the entire bill of sale. The DMV has no way to verify that Bob Smith and Robert Smith are the same person. Always sign the full legal name that appears on your driver's license or the title.
For the seller, the worst outcome is being held liable for a car you no longer own. If the buyer gets into an accident before transferring the title, the bill of sale and a release of liability form prove you sold the car. Without them, you may spend weeks fighting a claim or a lawsuit.
Frequently asked questions about car bills of sale
Is a bill of sale the same as a title?
No. A bill of sale is a receipt that shows the terms of the sale. The title is the legal document that proves ownership. You need both to transfer ownership. The seller signs the title over to the buyer, and the bill of sale supports the transaction.
Can I write my own bill of sale on a piece of paper?
Yes, as long as it includes the buyer and seller names, VIN, vehicle description, odometer reading, sale price, date, and signatures. A printed form is easier to read and less likely to be challenged, but a handwritten bill of sale is legal in most states if all the required information is there.
Does a bill of sale need to be notarized?
Most states do not require notarization for a private party car bill of sale. A few states, like Louisiana and Maryland, historically had notary requirements for certain title documents, but the bill of sale itself often does not need a notary. Check your state's DMV website for the exact rule. When in doubt, a notary stamp never hurts and adds proof if the signatures are ever disputed.
What if the buyer wants me to put a lower sale price on the bill of sale to save on taxes?
Do not do it. That is tax fraud. The buyer is the one who owes the sales tax, but the seller can be investigated for helping to falsify a document. Write the actual amount you received. If the car genuinely sold for less than fair market value because of damage, note that on the bill of sale or in a separate statement.
How long should I keep a copy of the bill of sale?
Keep it forever. The buyer should keep the original or a copy with the car's records for as long as they own the car. The seller should keep a signed copy for at least three to five years, but many people keep it indefinitely just in case an old ticket or accident claim surfaces. A scanned digital copy is fine as long as it is legible.
Can I sell a car with a bill of sale only and no title?
No. You cannot transfer ownership without the title. The bill of sale is not a substitute for a title. If you lost the title, you need to apply for a duplicate title from the DMV before you sell. Some states allow a bonded title process, but the bill of sale alone will not let the buyer register the car.