How Dealer Financing Compares to Bank and Credit Union Loans

When you sit down in the finance office, the dealer will almost always offer you financing. The process feels seamless because the dealer handles everything, but that convenience comes at a cost. Dealers do not just connect you with lenders, they act as intermediaries who can and often do mark up the interest rate above what the lender actually offered.

How the Buy Rate System Works

When a dealer submits your credit application to a lender, the lender responds with an approval at a specific rate called the buy rate. The dealer is allowed to mark up this rate, typically by up to 2.5 percentage points, and keep the difference as additional profit. If a lender approves you at 5 percent and the dealer quotes you 7 percent, the dealer earns the interest on that 2 percent spread over the life of your loan.

Credit Unions vs. Banks vs. Dealer Financing

Credit unions are member-owned institutions that typically offer the lowest auto loan rates available to qualified borrowers. Banks offer competitive rates but generally not as low as credit unions. Dealer financing is the most convenient but often the most expensive. For an Indiana buyer with good credit, a credit union loan might come in at 5.5 percent while dealer financing on the same credit profile might be quoted at 7.5 percent.

Why Pre-Approval Matters

Getting pre-approved before you visit a dealership accomplishes two things. First, it gives you a concrete interest rate to benchmark against any dealer financing offer. Second, it signals to the dealer that you are an informed buyer who understands financing, which often results in better treatment across the entire negotiation.

When Dealer Financing Makes Sense

Manufacturers sometimes offer subsidized financing through their captive lenders at rates below market. Zero percent financing or rates well below what any bank would offer are genuine deals that should be taken when available. The key is knowing your benchmark rate so you can recognize when dealer financing is actually competitive.