Finance Provider Comparison Tool: Banks vs Credit Unions vs Dealers

At a glance

What this tool does

This comparison shows typical APR ranges by lender type — credit union, bank, captive finance and online lender — for each major credit tier, so you know where to start shopping instead of accepting whatever the dealership finance desk presents as your only option.

How dealer financing actually works

When a dealer arranges financing through an outside bank or credit union rather than a manufacturer's captive lender, the dealer typically receives a "buy rate" from that lender and is legally permitted in most states to mark it up before presenting it to you as your rate — the markup is the dealer's compensation for arranging the loan. This markup is often negotiable, which is why comparing a pre-qualified outside rate against the dealer's offer before signing gives you real leverage.

• Ask directly whether the dealer's rate includes a markup over the buy rate — some states require this disclosure, others don't.
• A pre-qualified outside offer in hand is the strongest tool for negotiating the dealer's financing down.
• Manufacturer captive-lender promotional rates (sometimes 0-2.9% APR) are usually reserved for top credit tiers and specific models — read the fine print on eligibility.
• Captive-lender subsidized rates sometimes come with a trade-off: a manufacturer rebate may be forfeited if you choose the low-rate financing instead.

Credit unions vs. banks

Credit unions are member-owned, not-for-profit institutions that often pass savings back to members as lower loan rates — data from consumer finance researchers consistently shows credit unions posting lower average auto loan APRs than banks across most credit tiers, particularly for nonprime and subprime borrowers. Membership eligibility is usually easy to meet (based on employer, location, or a small membership organization fee), so it's rarely a real barrier to shopping there first.

When each lender type makes the most sense

• Credit union: default first stop for most credit tiers, especially nonprime and below.
• Bank: convenient if you already have a strong relationship and prime/super-prime credit.
• Captive finance: worth checking specifically when a manufacturer promotional rate applies to the exact model/trim you want.
• Online/fintech lender: useful for fast, broad pre-qualification shopping across many offers at once.

Worked example

A buyer with a 700 FICO score financing $26,000 over 60 months is quoted 8.5% APR by the dealership's arranged bank financing. A local credit union pre-qualifies the same buyer at 6.9% APR for the identical term. Bringing the credit union offer back to the dealer, either the dealer matches it or the buyer finances through the credit union directly — the roughly 1.6-point difference saves approximately $1,100-$1,300 in total interest over the loan term.