Bank vs Broker: How Many Lenders You Really Need On Your Side

Most Australian home buyers and refinancers will get better real‑world choice from a mortgage broker with a focused, well‑used panel of 8–15 core lenders than from a single bank. The key isn’t who has the longest lender list on paper, but who can quickly line up two or three genuine approvals that fit your goals, risk tolerance and tax position this week.

In other words: one bank means one set of rules. A good broker gives you multiple, very different sets of rules and options, without you having to run around the market yourself.

This guide unpacks what “lender panel size” actually means, how it compares with just going to your bank, and how to test whether a broker has enough lenders for your situation.

Choosing between your bank and a broker starts with understanding how many real options you have.

1. Bank vs broker: what “access” actually means

Before worrying about panel size, it helps to be clear on the structural difference between walking into a bank branch and sitting down with a broker.

1.1 One bank = one policy, one appetite

A bank can only offer its own products and must apply its own credit policy.

That means:

• One way of calculating income and shading overtime, bonuses or self‑employed income.
• One way of applying the APRA‑driven 3% serviceability buffer above your actual rate.
• One set of rules for LVR limits, genuine savings and how they treat debts and credit cards.

If the bank’s policy doesn’t like some part of your situation – for example, your self‑employed income history or existing HECS – there’s no Plan B inside that organisation.

As explained in /insights/do-banks-give-better-home-loan-deals-if-you-go-direct, most major lenders use the same underlying pricing grids for both bank and broker channels. So going direct rarely gives you a better deal – you’re just limiting yourself to one set of rules.

1.2 Broker = multiple policies, same core pricing

A mortgage broker is accredited with multiple lenders, usually including:

• Major banks
• Second‑tier / regional banks
• Non‑banks and specialist lenders

Each of those lenders has its own:

• Credit policy
• Appetite for certain borrower types (investors, self‑employed, high LVR, interest‑only)
• Product quirks and fees

Because of that, a decline from one bank doesn’t automatically mean others will decline you as well. Different Australian lenders apply significantly different policies to the same borrower (knowledge fact #9), which is the whole point of using a broker.

For many borrowers, this is where the real time, stress and money savings come from – not just rate shopping, but structural advice and lender selection, as covered fully in /insights/benefits-using-mortgage-broker-australia.

2. How big are lender panels in Australia – and what’s “enough”?

You’ll often see brokers advertise “access to 60+ lenders”. That sounds impressive, but it can also be misleading.

2.1 Typical broker panel sizes

Most aggregator groups offer a panel of 40–60 lenders. Individual brokers within that group are accredited with a subset of those.

In practice, an individual broker will:

• Be actively accredited with 20–40 lenders.
• Actively use 8–15 lenders for 80–90% of clients.
• Use the rest occasionally for very niche situations.

A broker with 60+ theoretical lenders but who only ever uses the same two majors isn’t giving you much more choice than you’d have by walking into those banks yourself.

2.2 The sweet spot: 8–15 genuinely usable lenders

For most borrowers, a broker is giving enough lender choice if they can:

1. Identify 3–6 lenders likely to approve you at all, based on your income, debts, LVR and credit history.
2. Narrow that to 2–3 lenders that also match your goals (offset, fixed vs variable, future investing, exit plans).
3. Explain, in plain English, why they’d recommend one over the others.

In reality, you can only meaningfully compare a handful of real offers before decision fatigue kicks in. Beyond that, extra theoretical lenders don’t add value – they just slow the process and increase your stress.

2.3 When you do need a bigger, deeper panel

There are situations where panel breadth really matters:

• Self‑employed / small business owners – where lenders shade income differently, treat company or trust structures differently, and some offer alt‑doc options using BAS or bank statements. See /insights/bank-statement-bas-home-loans-alt-doc-income-assessment for how alt‑doc is assessed.
• Future investors or complex portfolios – where interest‑only options, negative gearing, new CGT rules and debt recycling may all need to be considered together.
• Credit history issues or unusual properties – where specialist non‑banks may be the only realistic option.

In those cases, a broker who truly knows how to use 15–20 diverse lenders is worth far more than a bank relationship or an online broker locked into a tiny panel.

A strong broker panel connects you to a curated mix of major banks, second-tier lenders and non-banks.

3. Bank vs broker lender choice – side‑by‑side comparison

Here’s what real choice often looks like when you line up your bank against a well‑resourced broker.

3.1 Comparison table: one bank vs good broker panel

Assume you’re a professional couple in Sydney, borrowing $900,000 on P&I over 30 years with 15% deposit.

Note: Figures are indicative only and not specific lender quotes. All lenders must still apply their current credit policies and serviceability buffers.

Even on a relatively simple scenario, you can see how different policies affect your borrowing power and options. That variation is exactly why APRA’s 3% buffer is only part of the story – how lenders treat your income and debts can change the result by hundreds of thousands of dollars.