Mortgage Broker vs Bank: Who Actually Gets You a Better Home Loan?

You have two choices when applying for a home loan: walk into your bank, or call a mortgage broker. Most people default to their bank because it feels familiar, but that default could cost you tens of thousands over the life of a loan.

Here is what each option actually means for your rate, your borrowing power, and your chances of getting approved.

What does a mortgage broker do?

A mortgage broker finds and applies for a home loan on your behalf, across a panel of lenders, rather than selling you one product from one institution. At RyRo, that panel covers more than 30 lenders, including the big four banks, a range of second-tier banks, credit unions, and specialist lenders. We compare their products, identify which ones suit your situation, handle the paperwork, and liaise with the lender through to settlement.

A broker walks you through your options and handles the application from start to finish. Photo: Unsplash

A bank, by contrast, can only offer you products from their own shelf. A Commonwealth Bank lender, for example, will never say: "Actually, our rate is too high for your situation, try ANZ." Their job is to sell their bank's product. That is not a criticism; it is simply how the model works.

Understanding this structural difference explains almost every other gap between the two approaches.

Rates and lender choice: one shelf vs 30 plus

The rate you are quoted at the branch is rarely the sharpest rate that lender offers. Banks hold back better rates for customers who push back, or whose volumes make them worth fighting for. A broker has that leverage because they direct significant settlement volumes to each lender. We use that relationship to negotiate rates you would not get walking in off the street.

More importantly, we can compare that negotiated rate across every lender on our panel. If Macquarie's variable rate is 5.74% and NAB is at 5.89% for your loan size and LVR, you see both and choose. If your situation requires a specialist lender because you are self-employed or have a complex income structure, we can access lenders that do not advertise publicly at all.

Comparing rates across 30 plus lenders takes time if you do it yourself. A broker does it in minutes. Photo: Unsplash

With the RBA cash rate sitting at 4.35% after three rises in 2026, most variable rates are running in the high-5% to low-6% range. A difference of 0.30% on a $750,000 loan is roughly $135 per month, or about $48,000 over a 30-year term. That is real money.

Use the borrowing power calculator to model what different rates do to your repayments, and the loan repayment calculator to see the total interest cost across different scenarios.

The question is not just "which rate is lower?" It's "which lender will actually say yes to me, at a rate I can live with?"

Best interests duty: who actually works for you?

This is the part most people do not know about. Mortgage brokers in Australia are legally required to act in your best interests. It is called the best interests duty, and it sits inside the National Consumer Credit Protection Act. If a broker recommends a product, they have to be able to demonstrate it was the right choice for you, not just a convenient one for them.

Banks do not owe you that duty. A bank lender's obligation is to their employer. That does not make bank staff dishonest, but it does mean they are not legally required to tell you when a competitor has a better product for your needs.

What does a broker cost you?

Nothing, in most cases. Brokers are paid a commission by the lender when your loan settles. The commission is a percentage of the loan amount, typically around 0.60% upfront, with a smaller ongoing (trail) commission. RyRo charges no broker fees to you directly.

Brokers are required to disclose their commission in a Credit Guide before you proceed. If you are curious, just ask. There is no reason a broker should be cagey about it.

The bank equivalent is also free in terms of application fees for most standard loans, but the cost difference between lenders, in rate terms, often more than offsets any hypothetical saving from going direct.

Borrowing power: why lender choice matters more than you think

Every lender uses their own serviceability model. The broad rule is that they assess your ability to repay at roughly 3% above the actual rate, which for a 5.9% variable rate means they test you at around 8.9%. But the inputs into that calculation vary significantly between lenders.

Some lenders treat HECS debt more harshly. Some are more generous with rental income. Some will include overtime that others exclude. Some have tighter LVR caps for certain suburbs or property types.

Getting knocked back by one lender does not mean no lender will say yes. The criteria differ more than most people realise. Photo: Unsplash

If you go direct to your bank and they decline you, you might assume you cannot borrow. In many cases that is not true. A different lender with a different servicing model might approve the same application. A broker can identify which lender's model suits your income and liability profile before you apply, which protects your credit file from unnecessary hard enquiries.

Our home loan pre-approval guide covers this process in detail if you want to understand what lenders actually look at before they approve you.

When is going direct to a bank actually fine?

A few situations where going straight to your bank makes sense:

You have a very simple situation. PAYG income, two years at the same employer, clean credit, 20% deposit or more, buying a standard residential property. The big banks will generally approve this without drama.

You already have a great relationship rate. Some customers with significant existing lending or deposits can negotiate competitive rates directly. If you have already done that comparison and your bank's rate sits in the low-5% range for a variable loan right now, you may not need a broker to beat it. Though it is still worth checking.

You want to manage the process yourself and have the time. Some people prefer direct control and have the patience to navigate lender portals themselves.

Even in these cases, a free broker conversation costs you nothing and might reveal a better option. But the bank-direct path is not inherently wrong, it is just limited to one shelf.

Our guide on how to get a home loan in Australia covers the full process whether you go through a broker or a bank.

The comparison in plain terms

What to ask a broker before you commit

A good broker welcomes these questions:

• How many lenders are on your panel?
• Are you paid more by any lender than others? (Commissions should be disclosed in full.)
• Have you placed loans with this lender recently? (Some brokers maintain relationships with 60 lenders on paper but actively use 10.)
• What happens if my loan is declined?
• How long will you stay involved after settlement?

If the broker dodges any of these, find a different broker.

The honest verdict

For most people buying a home or refinancing, a broker is the better starting point. You get more lenders, more rate options, legal protection, and help with the paperwork, at no direct cost to you. The best interests duty alone is a meaningful protection that going direct to a bank simply does not provide.

Banks are not bad. The big four have competitive products and efficient processes. But they will always sell you their product, not the best product for your situation. That distinction matters more when your situation is anything other than textbook simple.

If you are in the Hills District or anywhere across Sydney and want a second opinion on what you are currently paying, or you want to know what you could borrow, contact our team for a no-obligation conversation.

Our home loan service covers purchases, refinances, investment loans, and construction finance for clients across Sydney's Hills District and beyond.

The right loan gets you the keys. The right broker finds the right loan. Photo: Unsplash

As a Hills District mortgage broker based in Norwest, RyRo works with clients from Castle Hill to Parramatta and across greater Sydney. We know which lenders work best for Hills District property types, price points, and income structures.

Talk to a broker who works for you

If you are buying, refinancing, or just trying to work out whether what you are paying is fair, RyRo is happy to take a look. We are a Hills District mortgage broker based in Norwest, and we work with clients across greater Sydney every day. There is no cost and no obligation for an initial conversation. Book a free strategy call and we will map out your options in plain terms.