Seller Financing a Vehicle in Arizona: 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, Arizona'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 Arizona
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 Arizona Secretary of State to make your lien public record and protect you against third-party claims. $10 filing fee (UCC-1 with Arizona Secretary of State).
Arizona Seller Financing Rules at a Glance
| Rule | Arizona Detail |
|---|---|
| Maximum interest rate | No general usury cap for private vehicle sales; default rate 10% if not specified (ARS §44-1202) |
| Title retention allowed | Yes |
| UCC-1 lien filing | Required — $10 filing fee (UCC-1 with Arizona Secretary of State) |
| Repossession process | Self-help under UCC Article 9 (no court order required absent breach of peace) |
| Filing agency | Arizona Secretary of State |
Arizona note: Arizona allows a Certificate of Title to be issued with the lienholder noted directly on the face of the title. This is simpler than a separate UCC-1 and provides clear public notice of your security interest.
How to Sell a Vehicle on Installment in Arizona
- 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 Arizona.
- 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 Arizona, keep the rate at or below No general usury cap for private vehicle sales; default rate 10% if not specified (ARS §44-1202).
- 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 Arizona
Arizona allows the seller to retain the certificate of title as collateral, or you can transfer the title to the buyer with a lien noted. Recording the lien with Arizona Secretary of State creates public notice of your security interest.
- 5
File a UCC-1 financing statement (required)
File a UCC-1 with the Arizona Secretary of State to perfect your security interest. $10 filing fee (UCC-1 with Arizona 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 Arizona for failure to release a satisfied lien.
Usury Laws in Arizona
Arizona eliminated its general usury cap in 1981. Private vehicle installment sales have no hard ceiling. If the note does not specify a rate, Arizona courts apply 10% per year. Specify your agreed rate in writing.
Title Handling in Arizona
Arizona allows a seller to hold the title as collateral (title retention). Record the security interest with ADOT MVD. The buyer receives a registration card but not a clear title until payoff.
Regardless of how the title is handled, file a UCC-1 financing statement with the Arizona 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 Arizona
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.
Arizona permits self-help repossession under UCC Article 9. Arizona courts have allowed repossession from a buyer's driveway without court order if no breach of peace occurred. Post-repossession, send 10 days advance written notice before resale.
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 general usury cap for private vehicle sales; default rate 10% if not specified (ARS §44-1202) 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 — Arizona
What documents do I need to sell a car on installment in Arizona?
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 Arizona, 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 Arizona?
No general usury cap for private vehicle sales; default rate 10% if not specified (ARS §44-1202). Arizona eliminated its general usury cap in 1981. Private vehicle installment sales have no hard ceiling. If the note does not specify a rate, Arizona courts apply 10% per year. Specify your agreed rate in writing.
Can I keep the car title until the buyer pays off the note in Arizona?
Yes. Arizona permits title retention as a form of collateral. Arizona allows a seller to hold the title as collateral (title retention). Record the security interest with ADOT MVD. The buyer receives a registration card but not a clear title until payoff.
What happens if the buyer stops making payments?
Arizona permits self-help repossession under UCC Article 9. Arizona courts have allowed repossession from a buyer's driveway without court order if no breach of peace occurred. Post-repossession, send 10 days advance written notice before resale. Always consult an attorney before repossessing to ensure you comply with Arizona notice requirements and UCC Article 9 procedures.
Do I need to register as a dealer to offer seller financing in Arizona?
Private individuals who occasionally sell vehicles and offer financing are generally not required to obtain a dealer license in Arizona. 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 Arizona Vehicle Bill of Sale
Start with a legally sound bill of sale, then attach your promissory note and security agreement.
Create Bill of Sale