Seller Financed Car Sale in California
A seller-financed car sale lets you sell a vehicle on a payment plan — the seller acts as the bank. In California, this is legal and can work well for both parties when structured correctly. This guide covers usury limits, how to handle the title and lien, what the contract must include, and how to protect yourself whether you are the seller or the buyer.
Need a Bill of Sale for the Transaction?
Generate a free California-specific bill of sale documenting the sale price and terms — instant, no account needed.
Generate Free Bill of Sale →Is Seller Financing Legal in California?
✓ Legal in California for private party sales
Seller financing (also called owner financing or installment sale) is legal in California for private vehicle sales. The seller acts as the lender and the buyer makes payments directly to the seller over time. California does not require a seller to hold a lending license for a single-transaction private installment sale.
Maximum Interest Rate in California
10% per year (California Constitution Article XV)
California's constitutional usury limit caps interest on private loans at 10% per year. The 10% limit applies to non-licensed lenders. Charging more than 10% interest on a seller-financed auto sale in California can void the interest portion of the contract and expose the seller to penalties. Structure your interest rate at or below 10% APR.
How the Title Works
Seller retains title until paid in full (preferred) OR buyer gets title with seller as lienholder
In California, the seller has two options for title during an installment sale: (1) Retain the title until the final payment is made — the buyer does not have title during the payment period, which protects the seller but complicates the buyer's insurance and registration. (2) Transfer the title to the buyer and record the seller as a lienholder with the California DMV (Form REG 604). Option 2 is more common and allows the buyer to register and insure the vehicle normally.
Recording the Seller's Lien in California
Seller recorded as lienholder on California DMV title (REG 604)
To record the seller as a lienholder on a California title, use DMV Form REG 604 (Notice of Lien). This is filed with California DMV and appears on the vehicle title. When the buyer makes the final payment, the seller releases the lien by filing Form REG 166 (Release of Lien) or signing a lien release letter, which the buyer submits to DMV to receive a clean title.
Required Documents
- •Bill of Sale documenting the full purchase price, down payment, and seller-financing terms
- •Retail Installment Sale Contract or Promissory Note (the payment agreement)
- •Security Agreement (UCC Article 9 or California equivalent) granting seller a security interest
- •California Certificate of Title (transferred to buyer with seller as lienholder via REG 604)
- •REG 604 (Notice of Lien) filed with California DMV
- •Insurance coverage confirmation for the buyer
What the Contract Must Include
- •Full purchase price and down payment amount
- •Principal balance after down payment
- •Interest rate (must not exceed 10% APR under California usury law)
- •Monthly payment amount and due date
- •Total number of payments and final payoff date
- •Late payment penalty (if any) and grace period
- •Default and repossession terms — what happens if the buyer stops paying
- •Balloon payment amount and date (if applicable)
- •Pre-payment terms — whether the buyer can pay off early without penalty
- •Both parties' legal names, addresses, and signatures
Seller Protections
- ✓Record yourself as a lienholder with California DMV via REG 604 — this prevents the buyer from selling the vehicle without your knowledge
- ✓Keep the original signed contract, promissory note, and copies of all title documents
- ✓Require comprehensive auto insurance with you listed as additional lienholder or loss payee
- ✓Include a default clause that specifies how many missed payments trigger repossession rights
- ✓California has strict repossession laws — you must follow UCC Article 9 procedures if you repossess
- ✓Conduct a thorough background check and credit check on the buyer before agreeing to financing
Buyer Warnings
- ⚠Ensure the seller is the legal owner with a clean title before agreeing to seller financing
- ⚠Verify the seller's identity and title status through California DMV before making payments
- ⚠Get a lien release in writing as soon as the final payment is made — do not accept verbal confirmation
- ⚠Require a receipt for every payment made to the seller
- ⚠Understand that default can result in repossession — know your rights under California's repossession laws
California-Specific Note
California's 10% usury cap is constitutionally protected and strictly enforced. If you charge more than 10% APR on a seller-financed vehicle sale in California, a court can void the interest entirely — meaning the buyer could owe only the principal with no interest. Structure all seller-financed deals at 10% APR or below, and document the rate clearly in the contract.
Frequently Asked Questions
Is seller financing legal for private car sales in California?
Seller financing (also called owner financing or installment sale) is legal in California for private vehicle sales. The seller acts as the lender and the buyer makes payments directly to the seller over time. California does not require a seller to hold a lending license for a single-transaction private installment sale.
What is the maximum interest rate for a seller-financed car in California?
The usury cap in California is 10% per year (California Constitution Article XV). California's constitutional usury limit caps interest on private loans at 10% per year. The 10% limit applies to non-licensed lenders. Charging more than 10% interest on a seller-financed auto sale in California can void the interest portion of the contract and expose the seller to penalties. Structure your interest rate at or below 10% APR.
How does the title work in a seller-financed car sale in California?
In California, the seller has two options for title during an installment sale: (1) Retain the title until the final payment is made — the buyer does not have title during the payment period, which protects the seller but complicates the buyer's insurance and registration. (2) Transfer the title to the buyer and record the seller as a lienholder with the California DMV (Form REG 604). Option 2 is more common and allows the buyer to register and insure the vehicle normally.
How does the seller record a lien on the title in California?
To record the seller as a lienholder on a California title, use DMV Form REG 604 (Notice of Lien). This is filed with California DMV and appears on the vehicle title. When the buyer makes the final payment, the seller releases the lien by filing Form REG 166 (Release of Lien) or signing a lien release letter, which the buyer submits to DMV to receive a clean title.
What must a seller-financed car contract include in California?
A seller-financed contract in California must include: Full purchase price and down payment amount; Principal balance after down payment; Interest rate (must not exceed 10% APR under California usury law); and other key terms. See the full checklist below.
What happens if the buyer defaults on a seller-financed car in California?
Default terms should be spelled out in the contract. In California, secured creditors (including seller-lienholders) generally have repossession rights under UCC Article 9 without court action, provided they do not breach the peace. Both parties should understand the default and repossession terms before signing.
Related Resources
Ready to Document the Sale in California?
Generate a free California bill of sale — instant and state-specific.
Create Your Bill of Sale →