Glossary term

Buy Rate

A buy rate is the interest rate a lender quotes to a dealer for dealer-arranged auto financing before any dealer markup is added to the rate offered to the borrower.

Byline

Written by: Editorial Team

Updated

April 22, 2026

What Is a Buy Rate?

A buy rate is the interest rate a lender quotes to a dealer when the dealer arranges financing for a car buyer. It is the lender's starting rate for that loan before the dealer presents the final contract rate to the customer.

This matters because the rate a borrower is shown at the dealership may be higher than the lender's original rate. The difference can increase the monthly payment and the total borrowing cost even if the buyer assumes the dealer is simply passing through the lender's best available offer.

Key Takeaways

  • A buy rate is the lender's quoted rate to the dealer for dealer-arranged financing.
  • The rate offered to the borrower can be higher than the buy rate.
  • A dealer markup above the buy rate can raise the total cost of the loan.
  • Getting quotes directly from banks or credit unions can help a borrower see whether the dealer-arranged rate is competitive.
  • Buy rate matters most when comparing dealership financing with outside financing.

How a Buy Rate Works

When a buyer applies for financing through a dealership, the dealer may send the application to one or more lenders. A lender responds with the rate at which it is willing to finance that deal. That lender quote is the buy rate.

The dealer may then offer the borrower a higher contract rate. In practical terms, that means the buyer is not always seeing the lender's raw pricing. The final rate can reflect both lender pricing and dealer compensation.

Why Buy Rate Matters in Auto-Loan Shopping

Buy rate helps explain why preapproval shopping matters. A borrower who only compares monthly payments at the dealership may miss the fact that the underlying interest rate has been marked up. A borrower who already has a bank or credit-union offer has a cleaner benchmark for deciding whether the dealer-arranged loan is actually attractive.

This is one reason OnWealth treats auto-loan shopping as both a car-price decision and a financing decision. A fair vehicle price does not guarantee a fair loan.

Buy Rate Versus Contract Rate

Rate

What it represents

Why it matters

Buy rate

The lender's quoted rate to the dealer

Shows the starting financing price before dealer markup

Contract rate

The rate written into the buyer's loan contract

Determines what the borrower actually pays

The borrower usually repays based on the contract rate, not the buy rate. That difference is why getting outside quotes before walking into the finance office can be so valuable.

Example of Buy Rate in Practice

Suppose a lender quotes a dealer a 6.2% buy rate for a qualified borrower. The dealer then presents financing at 7.4%. The buyer may focus on whether the payment fits the budget, but the higher rate means more interest over the life of the loan. If the borrower had a 6.3% preapproval from a credit union, the markup would be easier to spot and negotiate.

The Bottom Line

A buy rate is the interest rate a lender quotes to a dealer before any markup is added to the borrower-facing loan offer. It matters because the rate shown to the customer may not be the lender's starting rate, which can quietly raise the true cost of the auto loan.