Why most first-home buyers now use a mortgage broker

A decade ago, walking into your local bank branch was how most Australians bought their first home. Today, more than three in four new home loans are arranged by a mortgage broker — and the share among first-home buyers is even higher. Why?

The market got too big to shop yourself

There are over 100 lenders writing residential mortgages in Australia, and each one has its own credit policy. The same applicant can get approved at 6.05% with one bank and declined outright by another — for reasons that have nothing to do with whether they can afford the loan. Brokers know which lender writes which scenario.

For a first-home buyer specifically, the policy differences are huge:

• Which lenders accept the First Home Guarantee (and which won't, because of internal LMI overlap).
• Which lenders count genuine savings vs. accept family gifts.
• Which lenders use the HEM benchmark strictly vs. accept your actual expenses.
• Which lenders price favourably for professional packages in your industry.

What a broker actually does

A broker is not a salesperson for one bank. They're licensed under their own credit licence (or under a head group's), and they have a best interests duty under the National Credit Act — a legal obligation to recommend the loan that best suits you, not the one that pays them the most.

The work breaks down into:

1. Discovery. Understanding your deposit, income, expenses, future plans, and any non-standard income sources (bonuses, share schemes, freelance work).
2. Borrowing capacity modelling. Running scenarios across 6–8 likely lenders to see who lends you the most, and at what rate.
3. Product matching. Offset vs. redraw, fixed vs. variable, package vs. basic, LMI vs. guarantor — choosing the right combination for your goals.
4. Application + lender liaison. Packaging the file in the way each lender's credit team prefers, then chasing it through to settlement.

The four things they catch

Even experienced borrowers miss these. Brokers don't.

• HEM mismatch. Declaring expenses that look light for your postcode triggers a credit query and slows approval.
• Credit card limits. Total card limits — not balances — eat into your borrowing capacity by 3–4× the limit.
• Stamp duty cliffs. Buying at $801k instead of $800k can cost you $20k in concessions in some states.
• LMI tipping points. Going from a 12% deposit to 12.5% can drop your LMI premium by thousands.

What it costs you

Nothing, in most cases. The lender pays the broker on settlement and at trail. A first-home buyer using a broker pays the same rate as a first-home buyer walking into the branch — but with someone in their corner.