For most Australian borrowers, a mortgage broker wins on choice and guidance while a bank wins on simplicity for customers who already hold all their accounts in one place. The market has voted accordingly: brokers settled a record 81.0% of new residential home loans in the March 2026 quarter, up from 55.3% eight years earlier, according to MFAA data compiled by Cotality.
This article sets out both sides honestly, because choice only persuades clients when you can explain the alternative fairly.
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What Each Channel Actually Does
A broker acts for the borrower across a panel of banks, credit unions and non-bank lenders, assessing circumstances once and matching them to products from many providers. Mortgage brokers also carry a best interests duty under the National Credit Act, which legally obliges them to recommend a loan in the client’s interest rather than their own commission outcome. A bank branch sells only its own products; its staff are not required to compare the market, and they cannot offer what a competitor does better.
In practice that difference shows up most in complex files: self-employed income, credit impairments, guarantor structures and investment strategies all have wildly different lender appetites. It also shows up in workload, because a good broker manages valuation, documentation and the whole application process through to approval instead of leaving the borrower to chase each step.
Where a Broker Genuinely Wins
- Lender breadth: one conversation reaches dozens of credit policies, which matters most for borrowers who do not fit a standard PAYG applicant profile.
- Negotiation and rate advocacy: brokers see live interest rates and discounting behaviour across the panel every week, so they know which lenders move on price and which do not.
- Advocacy when a file wobbles: a broker can restructure a deal or escalate through a BDM relationship when an application hits trouble.
- Ongoing review: many brokers run annual check-ins after settlement, catching refinancing opportunities a set-and-forget bank product never surfaces.
The Cons You Need to Answer Honestly
Borrowers read that brokers earn commission from lenders, so name it first: commissions are disclosed in the credit proposal, and the best interests duty exists precisely to stop that payment structure steering advice. Then handle the real limitations. Some lenders distribute only direct, so no broker can offer their full range. Service quality varies between individual brokers as much as it does between branches, so a borrower choosing you over a bank should be choosing your process, not just the channel. Finally, turnaround depends on how fast the broker gathers documents; a disciplined borrower at a branch counter with everything prepared can occasionally beat a slow file.
Where the Bank Is Genuinely the Right Answer
- Existing-package discounts: borrowers with mortgages, transaction accounts and credit cards already at one bank sometimes unlock relationship pricing that outweighs a marginally cheaper external rate.
- Genuine simplicity: a straightforward owner-occupier refinance of a well-priced existing loan can cost more effort than it saves.
- Direct-only offers: several major banks now push proprietary products through their own channels; Commonwealth Bank alone has reported roughly 70% of its home lending flowing direct. Those deals exist outside any broker panel by design.
The common mistake in this conversation is dismissing the bank option entirely. Clients who have checked a bank’s direct offer themselves trust a broker more when the broker acknowledges it and explains the trade-offs rather than pretending it does not exist.
A Decision Path You Can Walk Clients Through
Start with the fit question: does the client match a standard lending profile? If yes, the gap between channels narrows to service and price, so compare your proposed rate against their bank’s best written offer. If no, walk through which lenders accept their situation and why, because that is where single-lender distribution fails borrowers fastest. Close on service: who tracks the file, who calls the valuer, who fixes a problem at 5pm Friday.
Service Expectations Worth Setting
Channel choice is really a customer service decision wearing a pricing costume. Set expectations early: tell clients exactly when they will hear from you during the application, what you handle directly and what needs their action. Borrowers who leave a branch experience rarely know whether anyone is managing their file at all, and that contrast is your strongest differentiator.
Conclusion
Brokers win the broker-versus-bank question on breadth, advocacy and ongoing care; banks keep a fair edge for bundled-discount loyalists and borrowers chasing direct-only deals. Market share keeps shifting toward the broker channel because most borrowers value comparison plus someone accountable for the outcome.
Next time a prospect asks why they should not just use their own bank, get the bank’s best offer in writing, put your recommendation beside it and show the client the policy differences behind the headline rate. That one comparison closes more arguments than any statistic.
