Seller Financing a Vehicle in California: Promissory Note, Usury Laws & UCC Guide
Owner financing (also called installment sale or seller carry-back) lets a private seller act as the bank. This guide covers every document you need, California's usury rate cap, how to perfect your security interest, and what to do if the buyer defaults.
What Is Seller Financing for a Vehicle?
In a seller-financed vehicle sale, the buyer pays a down payment at closing and then makes regular installment payments directly to you — the seller — over an agreed period. No bank or credit union is involved. You carry the note.
This arrangement appeals to buyers who cannot qualify for conventional auto loans and to sellers who want to move a vehicle quickly or earn interest income on the unpaid balance. The risk is yours: if the buyer stops paying, you must enforce the note and, if necessary, repossess the vehicle.
Required Documents in California
Records the ownership transfer and purchase price. Required in most states to register the vehicle.
The formal IOU. States the loan amount, interest rate, payment schedule, and consequences of default.
Gives you a lien on the vehicle. The buyer cannot sell the car free and clear until the note is paid off.
Filed with California Secretary of State to make your lien public record and protect you against third-party claims. $9 filing fee (UCC-1 with CA Secretary of State).
California Seller Financing Rules at a Glance
| Rule | California Detail |
|---|---|
| Maximum interest rate | No statutory cap for private vehicle sales (market rate applies) |
| Title retention allowed | No — must transfer title at sale |
| UCC-1 lien filing | Required — $9 filing fee (UCC-1 with CA Secretary of State) |
| Repossession process | Self-help under UCC Article 9 (no court order required absent breach of peace) |
| Filing agency | California Secretary of State |
California note: California buyers may assert the holder-in-due-course defense even on private sales if the agreement is later assigned. Draft the promissory note carefully.
How to Sell a Vehicle on Installment in California
- 1
Agree on the sale price and down payment
Set a purchase price, down payment (ideally 10–20%), and confirm the buyer can maintain insurance on the vehicle throughout the loan term in California.
- 2
Draft a promissory note
The promissory note must state the principal amount, annual interest rate, payment schedule (monthly amount and due dates), total number of payments, and consequences of default. In California, keep the rate at or below No statutory cap for private vehicle sales (market rate applies).
- 3
Execute a security agreement
A security agreement (separate from the promissory note) creates the seller's lien on the vehicle. It should identify the vehicle by VIN, describe the collateral, and spell out the seller's repossession rights on default.
- 4
Handle the title in California
California requires title transfer at the time of sale. Record your lien through California Secretary of State immediately after the sale to preserve your security interest.
- 5
File a UCC-1 financing statement (required)
File a UCC-1 with the California Secretary of State to perfect your security interest. $9 filing fee (UCC-1 with CA Secretary of State). This filing gives you priority over other creditors and is the legal backbone of your seller-financing arrangement.
- 6
Collect and track payments
Issue written receipts for every payment. Keep a running ledger showing the outstanding balance, interest accrued, and remaining payments. Email receipts create a time-stamped paper trail if a dispute arises.
- 7
Release the lien on payoff
Once the buyer makes the final payment, immediately file a UCC-3 termination statement and release the lien on the title. Delays can expose you to liability in California for failure to release a satisfied lien.
Usury Laws in California
California's Unruh Act applies to dealers, not private sellers. Private seller financing has no mandated rate ceiling, but courts may void unconscionable terms above roughly 10% on unsecured amounts.
Title Handling in California
California requires title transfer at time of sale. Sellers cannot retain the title as collateral. Protect yourself by filing a UCC-1 financing statement with the California Secretary of State and recording a lien with the DMV.
Regardless of how the title is handled, file a UCC-1 financing statement with the California Secretary of State immediately after the sale. This creates a public record of your security interest and protects you if the buyer attempts to sell the vehicle, files for bankruptcy, or has other creditors.
Default and Repossession in California
Default occurs when the buyer misses a payment, fails to maintain insurance, or violates another material term of the installment agreement. Your security agreement should define what constitutes default and what notice (if any) you must give before exercising remedies.
California is a self-help repossession state. After default, a lienholder may repossess without a court order as long as no breach of peace occurs. Strict notice and deficiency requirements under California Commercial Code §9620.
Risks of Seller Financing
Buyer defaults
Require a meaningful down payment (10–20%), verify income and references, and file a UCC-1 lien immediately.
Vehicle damage reduces collateral value
Require the buyer to maintain full-coverage insurance naming you as lienholder throughout the loan term.
Interest cap violation
Stay below No statutory cap for private vehicle sales (market rate applies) and document the agreed rate in writing on the promissory note.
Buyer files for bankruptcy
A perfected UCC-1 lien gives you secured-creditor status, which is significantly better than unsecured creditor in bankruptcy proceedings.
Buyer sells the vehicle to a third party
A UCC-1 filing and/or lien notation on the title puts third-party buyers on constructive notice of your interest.
Seller Financing FAQ — California
What documents do I need to sell a car on installment in California?
You need a bill of sale (for the initial ownership transfer), a promissory note (the financing instrument), and a security agreement (creating your lien on the vehicle). In California, you should also file a UCC-1 financing statement to perfect your security interest.
What is the maximum interest rate I can charge for seller financing in California?
No statutory cap for private vehicle sales (market rate applies). California's Unruh Act applies to dealers, not private sellers. Private seller financing has no mandated rate ceiling, but courts may void unconscionable terms above roughly 10% on unsecured amounts.
Can I keep the car title until the buyer pays off the note in California?
No. California requires title transfer at time of sale. Sellers cannot retain the title as collateral. Protect yourself by filing a UCC-1 financing statement with the California Secretary of State and recording a lien with the DMV.
What happens if the buyer stops making payments?
California is a self-help repossession state. After default, a lienholder may repossess without a court order as long as no breach of peace occurs. Strict notice and deficiency requirements under California Commercial Code §9620. Always consult an attorney before repossessing to ensure you comply with California notice requirements and UCC Article 9 procedures.
Do I need to register as a dealer to offer seller financing in California?
Private individuals who occasionally sell vehicles and offer financing are generally not required to obtain a dealer license in California. However, if you regularly engage in the business of selling and financing vehicles, dealer and sales finance company licensing may apply. One-off transactions between private parties are typically exempt.
What is a UCC-1 financing statement and why does it matter?
A UCC-1 financing statement is a public notice filed with the state government that tells the world you have a security interest in the vehicle. Without it, a buyer who fraudulently sells the car to a third party could leave you with no recourse against the new owner. Filing perfects your lien and gives you priority over most other creditors.
Generate Your California Vehicle Bill of Sale
Start with a legally sound bill of sale, then attach your promissory note and security agreement.
Create Bill of Sale