"Why use a broker when I could just walk into my bank?" is one of the most common questions customers ask before they call us. It's a fair question — and the answer isn't always "broker". For some customers, the bank is the right call. For most, a broker writes a sharper rate. Here's the actual maths, from someone who's been on both sides of it.
How banks make money on car loans
A major bank earns money on a car loan in two ways: the interest spread (difference between what the bank borrows the money at and what they lend it to you at) and the establishment fees. For a $35,000 car loan over 5 years at 7.5%, a bank earns roughly $7,000 in interest spread and $400–800 in establishment and monthly fees over the life of the loan.
The bank's car loan team has to write enough volume to cover its salaries, premises, IT, marketing, and risk capital. So the rate they quote you is set against those internal costs, not against the absolute lowest market rate.
How brokers make money on car loans
A finance broker is paid commission by the lender once your loan settles. Commission is typically 1%–3% of the loan amount, depending on the lender and product. For that same $35,000 loan, a broker earns roughly $350–$1,050 in upfront commission, plus possibly a small ongoing trail commission (0.1%–0.4% per year of the outstanding balance).
The customer doesn't pay this commission directly — it comes out of the lender's margin. From the customer's perspective, a broker is "free": the lender pays the introducer fee out of the same interest-spread bucket the bank would otherwise keep entirely for themselves.
So why is a broker often cheaper?
Three reasons.
1. The broker has 40+ lenders, not 1. A bank can only quote you their own rates. A broker compares 40+ lenders and picks the sharpest one for your specific file. Even after the broker takes a small commission, the rate is often 1–3 percentage points lower than your own bank would write — because the broker has access to specialist non-banks, smaller banks, and credit unions with sharper pricing on certain file types.
2. The broker fights for the rate; the bank's call-centre staff don't. Bank car-loan staff are typically paid salary, not commission. They process applications, they don't negotiate. A broker has a direct commercial incentive to find you the lowest rate — because that's what wins the customer's repeat business and word-of-mouth referrals.
3. The broker absorbs the lender-comparison work. Comparing 40+ lenders yourself would mean 40+ formal credit applications, each leaving a hard enquiry on your file. A broker uses one soft credit check and the lenders' assessment policies to short-list the right options without damaging your score.
When the bank is the right call
To be honest, sometimes the bank is the right call:
- You already bank with them and they offer a relationship discount that beats market rates (rare but happens).
- You've got an existing pre-approved facility you can draw against (no application needed).
- The loan amount is small ($5–10k) where the broker's involvement adds friction without much rate-saving upside.
- You strongly prefer to keep your finance with one institution for relationship reasons.
For most customers most of the time though, none of the above apply — and a broker quote against the bank quote will show a meaningful saving.
How turnaround times compare
Banks typically take 2–5 business days to assess a clean car-loan application; longer if the file needs review or supporting docs. Settlement is another 1–2 business days after approval. So 3–7 business days end-to-end is normal.
Brokers usually quote indicative rates the same day. Formal lender approval is typically 24–48 hours from application. Settlement is 1–2 business days after that. So 2–4 business days end-to-end is normal — slightly faster than the bank, mostly because the broker is coordinating across the gap rather than waiting in a bank's internal queue.
How dealer finance compares to both
Dealer finance is the third option, and the one most customers default to. It's also usually the most expensive.
Dealer finance is broker finance with the dealer as the broker — except the dealer's finance department is tied to one or two lenders (often white-labelled bank product or specialist non-banks at premium rates), and the dealer's commercial incentive is to write the deal that afternoon, not to find the sharpest rate. The dealer is paid commission on the loan and sometimes has volume bonuses tied to certain lender targets.
For a typical $35,000 car loan, the dealer's quoted rate is often 1–3 percentage points above what an independent broker would write on the same file. Over a 5-year loan, that's $2,000–$6,000 in extra interest.
Broker vs bank vs dealer FAQs
Does using a broker affect my credit score?
No — at the broker stage we use a soft credit check, which leaves no enquiry on your file. A hard enquiry only happens when you formally apply with the lender we've selected for you. Going broker actually protects your score compared to applying to multiple banks individually.
Will my bank give me a "loyalty rate"?
Sometimes — but rarely as sharp as a broker can write. Banks compete for new customers, not loyal ones. If you've been with the bank for years, you're more likely to get the standard rate than a discount.
Are broker commission rates disclosed?
Yes, by law. Every Australian broker must provide a credit guide before you sign anything, disclosing the commission ranges they receive from each lender on their panel. Read ours here.
If the broker's "free", how do I know they're working in my interest?
Two ways. First, the regulatory framework — brokers operate under ASIC's responsible-lending obligations, which require us to make a "preliminary assessment" that the loan is "not unsuitable" for you. Second, the commercial incentive — broker reputation lives or dies on customer reviews and repeat business. Pushing customers into bad deals destroys both.
What's the actual rate difference broker vs bank?
For a typical $35,000 car loan on a clean file, our broker quote is usually 0.5–2 percentage points below the customer's bank quote. On non-prime files (defaults, ABN low-doc), the difference is usually larger because banks won't write those files at all.
The short version
Bank: limited lender, less negotiation, slightly slower. Dealer: highest rate, fastest decision, locked in to one or two lenders. Broker: 40+ lender panel, lowest rate available for your file, soft credit check first. For most customers, broker wins on every metric except "I already have an account with them".
Want a real broker quote against your bank's quote? Call us on (07) 3130 1674 or drop your details. Costs you nothing — and if we can't beat the bank, we'll tell you.