To buy a car with cash, you need a valid ID, proof of insurance, and a secure form of payment; you confirm the title has no lien; you let the dealer file IRS Form 8300 if the payment exceeds $10,000 in currency; you sign the title, bill of sale, and odometer disclosure; and you register the car at your state motor vehicle agency, paying sales tax and title and registration fees. The exact steps shift depending on whether you buy from a dealership or a private seller.
What to Bring to the Sale
Three things need to be in your hand before you meet the seller.
A government-issued photo ID. Your driver’s license or state ID confirms your identity and provides the name that goes on the title and bill of sale.
Proof of auto insurance. Most states require an active policy or binder before you can register the vehicle or legally drive it off the lot. Call your insurer ahead of the sale to add the vehicle or get a same-day binder.
Payment in a secure form. A cashier’s check or money order is the safest method for both sides. Your bank issues a cashier’s check by pulling the funds from your account and backing the payment with its own assets, usually for a fee of around $10 to $15. Make sure the payee name and amount match the seller’s legal name and the agreed price exactly.
Paying in physical currency is legal, but it carries risks that a cashier’s check avoids. More on that below.
Check the Title Before You Pay
Confirm the seller actually owns the car free and clear before any money changes hands. A vehicle with an outstanding loan carries a lien, meaning the lender has a legal claim to the car. If you buy a car with an active lien, the lender can repossess it from you even after you have paid in full.
Look at the title itself. A clean title lists no lienholder. If a lienholder is printed on the title, ask the seller for the original signed lien release from that lender proving the loan is paid off. Without that document, your state motor vehicle agency will not transfer the title into your name.
Then run the 17-character Vehicle Identification Number through the National Motor Vehicle Title Information System (NMVTIS). This federally maintained database reveals whether the vehicle has been branded as salvage, flood-damaged, or junk by any state titling agency, or reported to a salvage yard or insurer as a total loss.1U.S. Department of Justice, Office of Justice Programs. For Consumers Once a brand is applied, it stays on the record across all states, which blocks “title washing” — re-titling a branded vehicle in another state to hide its history. You can order an NMVTIS report through the approved providers listed on the Department of Justice’s VehicleHistory.gov site.2U.S. Department of Justice, Office of Justice Programs. Research Vehicle History The report covers five key fraud and theft indicators but does not include everything your state may have on file, so a VIN check with your state motor vehicle agency is worth adding.
The $10,000 Cash Reporting Rule
Federal law requires any business that receives more than $10,000 in cash during a single transaction, or in related transactions, to report the payment to the IRS and the Financial Crimes Enforcement Network by filing Form 8300.3Office of the Law Revision Counsel. 26 USC 6050I – Returns Relating to Cash Received in Trade or Business, Etc. Every car dealership is covered. The dealer must file within 15 days of receiving the payment.4Internal Revenue Service. Instructions for Form 8300
To complete the form, the dealer will ask for your full legal name, Social Security or taxpayer identification number, date of birth, and home address. The statute requires this information, and most dealerships will not finish the sale if you decline to provide it.3Office of the Law Revision Counsel. 26 USC 6050I – Returns Relating to Cash Received in Trade or Business, Etc. The Form 8300 filing is a routine disclosure; it does not mean you are under investigation.
Private sellers are treated differently. An individual selling personal property outside a trade or business is exempt from Form 8300, even if you pay more than $10,000 in currency.5Internal Revenue Service. IRS Form 8300 Reference Guide
What Counts as Cash
The IRS definition of “cash” for Form 8300 is broader than paper bills and coins. It covers:
- Physical U.S. and foreign currency.
- Cashier’s checks, money orders, traveler’s checks, and bank drafts with a face value of $10,000 or less, when used to buy a consumer product like a car priced above $10,000.5Internal Revenue Service. IRS Form 8300 Reference Guide
- Digital assets such as cryptocurrency, treated as cash for Form 8300 purposes since January 1, 2024.3Office of the Law Revision Counsel. 26 USC 6050I – Returns Relating to Cash Received in Trade or Business, Etc.
A cashier’s check or money order with a face value above $10,000 is not counted as cash under these rules.5Internal Revenue Service. IRS Form 8300 Reference Guide Pay for a $15,000 car with a single $15,000 cashier’s check and no filing is required. Combine a $9,000 cashier’s check with $7,000 in physical currency and both amounts count as cash, because each monetary instrument is $10,000 or less and the total is above the threshold.
Do Not Split Payments
Deliberately breaking a large payment into smaller amounts to stay under the $10,000 threshold is a federal crime called structuring. Paying a dealer $9,500 in cash one day and $5,500 the next day to avoid triggering Form 8300 violates 31 U.S.C. § 5324.6Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited Structuring carries up to five years in prison, a fine, or both. If the structuring is part of a pattern of illegal activity involving more than $100,000 in a 12-month period, the maximum doubles to 10 years.
Why a Cashier’s Check Beats a Bag of Bills
Carrying tens of thousands of dollars in physical currency to buy a car creates a practical risk beyond the reporting rules. Under civil asset forfeiture laws, law enforcement officers in many jurisdictions can seize cash during a traffic stop if they believe it may be connected to criminal activity. The legal standard for seizure is often far lower than what is required for a criminal conviction; in some states, officers only need to show it is more likely than not that the money is tied to a crime. You do not have to be charged with or convicted of any offense for the seizure to happen.
Fighting a forfeiture can take months or years and cost more in legal fees than the seized amount. Using a cashier’s check eliminates the risk almost entirely, costs very little, and leaves a paper trail that protects both sides of the sale.
Dealership Purchases vs. Private Sales
Who prepares the paperwork depends on who is selling the car.
At a dealership, the dealer handles most of it. The dealership prepares the bill of sale, processes the title transfer, and in most states issues a temporary tag so you can drive the car home. The dealer also files Form 8300 if you pay more than $10,000 in cash.
In a private sale, you and the seller do the paperwork yourselves. You fill out the title assignment together, create a bill of sale, and complete the odometer disclosure. You also lose the consumer protections a dealer provides: there is no implied warranty on a private sale in most states, and verifying the vehicle’s history and title falls entirely on you.
The Documents That Transfer Ownership
Three documents form the legal backbone of a cash purchase.
Vehicle Title
The title is the legal proof of ownership. The seller signs the title over to you in the assignment section on the back, and both parties print their names, sign, and enter the date and sale price. Confirm the name on the title matches the seller’s photo ID. If the title lists co-owners, all owners generally have to sign unless one holds a valid power of attorney for the other.
Bill of Sale
A bill of sale is a written record of the transaction. Not every state requires one, but it protects you by documenting what was exchanged and for how much. A complete bill of sale includes:
- Full names and addresses of buyer and seller.
- Vehicle description: year, make, model, and VIN.
- Purchase price and date of sale.
- “As-is” language if the vehicle is sold without warranty, which is standard for private sales.
- Signatures of both parties.
Most state motor vehicle agencies post free bill of sale templates on their websites. Some states require the signatures to be notarized, so check with your local agency before the sale to avoid a second trip.
Odometer Disclosure Statement
Federal law requires every person transferring a motor vehicle to provide a written disclosure of the odometer reading at the time of sale.7Office of the Law Revision Counsel. 49 US Code 32705 – Disclosure Requirements on Transfer of Motor Vehicles The seller must certify whether the reading reflects the actual mileage, exceeds the odometer’s mechanical limit, or is inaccurate.8eCFR. 49 CFR Part 580 – Odometer Disclosure Requirements On most titles the disclosure is printed directly on the form. Providing a false odometer statement is a federal offense that can carry fines and imprisonment.
The disclosure must include the reading (without tenths of a mile), the date of transfer, and the printed names and addresses of both parties. If the odometer has been tampered with or replaced, the seller must note that the reading does not reflect actual mileage and include a discrepancy warning.
Registering the Car and Paying Taxes
After the sale, bring the signed title, the bill of sale, your photo ID, and your proof of insurance to your state motor vehicle agency. The agency reviews the documents, issues a new title in your name, and registers the vehicle.
Expect several costs at registration:
- Sales or use tax. Five states charge no sales tax on vehicle purchases. Among states that do, the combined state and local rate ranges from under 3% to over 10% of the purchase price.
- Title transfer fee. Generally between roughly $10 and $165, depending on the state.
- Registration fee. Annual fees vary by state and often depend on the vehicle’s weight, age, or value.
- Notary fee. Where required, most states cap notary fees at $2 to $25 per signature.
Your state agency website lists exact fees. Bring more than you expect, because some states add county surcharges or special district fees on top of the base amounts.
Temporary Tags and Driving Before Registration
Dealers typically issue a temporary tag that lets you drive the car legally for a set period, commonly 30 days, while the paperwork is processed. In a private sale the rules vary: some states issue temporary transit permits, some grant a short grace period to register, and a few require registration before the car can be driven. Check your state policy before the sale so you have a plan for getting the car home legally.
Receiving Your New Title
Once processing is complete, the agency issues a clean title in your name with no lienholder listed, confirming you own the vehicle outright. Some states mail the title within days; others take several weeks. The registration card and license plates are usually issued the same day you visit the office.