Key Takeaways
- A bank offers only its own products under one credit policy; a broker compares a panel of lenders and can match you to the one most likely to approve you on suitable terms.
- Brokers carry a Best Interests Duty to you, while banks and their staff do not.
- Approval often hinges on lender policy: serviceability, income shading, genuine savings, and credit enquiries vary, so the same borrower gets different answers.
- Going direct suits simple, strong profiles with a good offer in hand; most other situations benefit from comparison.
The choice between using a mortgage broker and going straight to a bank is one of the first real decisions you make as a borrower, and it has a longer tail than most people expect. A home loan is often a 30-year commitment, so a difference of even a fraction of a percentage point in your rate, or a loan structured slightly wrong for your situation, compounds into tens of thousands of dollars over its life. In a market where borrowing capacity is tight, and lenders price existing customers differently from new ones, where you start matters.
The honest answer is that neither path is universally better. With almost a 80% market share, a broker suits many borrowers, particularly anyone whose situation is not perfectly straightforward, while going directly to a bank can make sense for others. The right choice depends on your profile, your circumstances, and how much of the process you want to manage yourself.
This guide explains what each path actually involves, how they compare on cost and on approval, and which borrower types each tends to suit. The aim is to give you a clear framework for deciding, grounded in how lenders really assess borrowers rather than a simple list of pros and cons.
The Short Answer
Before the details, it helps to have the plain-English version, because for many borrowers the decision is clearer than it first appears.
A bank can only offer its own products, assessed under its own single credit policy and does not legally be bound to operate in your “best interest”. A mortgage broker works across a panel of lenders and can match your situation to the one most likely to approve you on suitable terms. If your finances are simple, your profile is strong, and you already hold a competitive offer from your bank, going direct can be perfectly sensible. If your situation has any complexity, a low deposit, self-employment, limited time on your hands, need advice, variable income, a previous decline, or you simply want someone to compare options and manage the whole process, a broker usually adds the most value. The deciding factor is rarely loyalty or habit; it is which path gives you the better-fitting loan for your circumstances.
What a Mortgage Broker Actually Does
A mortgage broker is an intermediary licensed to arrange home loans on your behalf, operating under an Australian Credit Licence or as a credit representative under the National Consumer Credit Protection Act (NCCP Act). Their role goes well beyond finding a rate.
A good broker will assess your full financial position, estimate your borrowing capacity across several lenders, and then select the lender whose policy fits your situation best, before guiding the application through pre-approval, valuation, formal approval, and settlement. The work that matters most is often invisible: knowing, before lodging anything, which lender is likely to say yes and on what terms.
One limitation is worth stating plainly. A broker’s panel is not the entire market. Most brokers work with a wide range of often over 40 lenders, but not every lender in Australia, and some smaller or online lenders deal only directly with borrowers. This is why it is reasonable to ask any broker how many lenders are on their panel and which ones they use most often.
What Happens When You Go Directly to a Bank
Going direct means dealing with a single lender, through a branch, a mobile lender, or an online application. It is a familiar path, and for some borrowers it is the simplest one if your situation is straightforward and you have the time to do this, but may not result in your getting the best result.
The structural feature to understand is that a bank assesses you against its own credit policy and offers only its own products. If you do not fit that one policy, the answer is no, with no visibility of whether another lender would have approved you. A bank also has no obligation to tell you that a competitor is cheaper, or that its own retention rate for existing customers is lower than the rate it first quotes you. That said, a direct relationship has genuine advantages: if you already bank there, the lender can see your transaction history, the process can be quick for a clean application, and some “under the counter” deals are only available directly. The trade-off is breadth for simplicity.
Broker vs Bank at a Glance
The table below summarises the practical differences before we look at cost and approval in detail. As with any general comparison, your own situation determines how much each point matters.
| Factor | Mortgage broker | Direct to bank |
| Range of lenders | A panel of many lenders | One lender only |
| Whose interests apply | Best Interests Duty to you | No best interests duty to you |
| How they are paid | Usually lender-paid commission | Salaried or incentivised staff |
| Comparing the market | Done for you across lenders | You compare yourself |
| Complex situations | Can match you to a suitable lender | Limited to one policy |
| Credit enquiries | Can assess before lodging | An application is a formal enquiry |
| Process management | Managed through to settlement | Largely self-managed |
| Best suited to | Most borrowers, especially non-standard | Simple, strong profiles knowing who you want to deal with |
How They Compare on Cost
Cost is where a lot of confusion sits, partly because the way brokers are paid is widely misunderstood and partly because bank pricing is rarely as fixed as it looks. Understanding both protects you from paying more than you need to.
How Brokers Are Paid
For standard residential home loans, brokers are generally paid by the lender, not by you. The lender pays an upfront commission when your loan settles and a smaller trail commission over the life of the loan. Because the commission comes from the lender, the service is usually at no additional cost to the borrower. There are two things worth checking. First, lenders can claw back the upfront commission from a broker if the loan is repaid or refinanced within a couple of years, so your broker may be out of pocket if that occurs. Second, while direct fees are uncommon for standard loans, some complex or specialist scenarios may attract one, in which case the broker must document and disclose it upfront. If a fee is proposed, it is fair to ask why and whether it is in line with the market and the basis on why it is appropriate.
Bank Pricing and the Loyalty Tax
Banks rarely lead with their sharpest rate. The advertised rate is often not the lowest available, and existing customers can find themselves paying more than new ones, a pattern sometimes called the loyalty tax. Banks will not usually volunteer a discount; you have to ask, and you have to know how to ask. Package home loans can bundle an offset account and other features for an annual fee, which suits some borrowers and not others. The practical point is that a bank’s first number is a starting position, not a fixed price, and whether you secure a better one often depends on how confidently you negotiate. A broker has wide visibility across multiple lenders and can go into bat for you to obtain the optimum available pricing for your circumstances with a particular lender assisted by their knowledge of other competitive offers.
How They Compare on Approval
Approval, not rate, is where the choice often matters most, because being declined or under-approved by one lender does not mean another would reach the same conclusion. Lender policy varies considerably, and this is the area where a broker’s view across multiple lenders can change the outcome.
Serviceability and the APRA Buffer
Serviceability is the lender’s assessment of whether you can afford the repayments. The Australian Prudential Regulation Authority (APRA) requires most lenders to test your repayments at an interest rate around 3% above the actual rate, so a loan at 6% is assessed at roughly 9%. While the buffer applies to all lenders, some ASIC regulated lenders also work on a 2% buffer rate so the detailed assumptions behind serviceability, such as how living expenses and existing debts are calculated, differ between them. That is why the same borrower can be approved for noticeably different amounts at different banks. As lenders vary in their treatment of acceptable living costs used in serviceability, a broker is well versed to see which lender may have a more favourable policy to meet your requirements.
How Income Is Treated
Lenders treat income types very differently, and this is often the difference between approval and decline. Pay As You Go (PAYG) salary is the most straightforward. Variable income, such as overtime, bonuses, and commissions, is commonly shaded, meaning only a portion, often around 80%, is counted. Casual income, rental income, and some allowances are treated similarly, and rental income in particular is usually shaded rather than counted in full. Self-employed borrowers face the widest variation: some lenders require two years of financials, while others will consider one strong year, and policies on add-backs differ. Probation also matters, since some lenders will lend from your first day in a new role, and others want a probation period completed. None of this is visible from a single bank’s calculator, which is precisely where comparing across lenders earns its keep and using a broker who can access multiple lenders’ policies is very advantageous to borrowers.
Deposit, LVR, LMI, and Genuine Savings
Your deposit sets your loan-to-value ratio (LVR), the size of your loan as a percentage of the property value. A 5% deposit means a 95% LVR, which lenders treat as higher risk and normally cover with Lenders Mortgage Insurance (LMI), a premium that protects the lender rather than you. Some borrowers avoid LMI through a government guarantee scheme or a guarantor. Many low-deposit loans also require genuine savings, evidence that you accumulated the deposit over time rather than receiving it suddenly as a gift. Whether a gifted deposit counts as genuine savings is a policy that differs between lenders, and getting matched to the right one can be the difference between applying now or in a few months. Brokers have access to varied approaches used by different lenders to navigate the best outcome for borrowers.
Credit Score and Enquiries
Every formal loan application is recorded on your credit file, and several enquiries in a short window can weigh on your credit score, which lenders read as a sign of financial stress. Applying to several banks at once to shop around can therefore work against you, and a decline from one bank can make the next application harder. A broker can assess your likely approval across lenders and lodge only with the one most likely to approve you, which helps keep your credit file clean. Existing commitments matter here, too: credit card limits are usually assessed at the full limit even if you owe nothing, and a Higher Education Loan Program (HELP) debt is counted as an ongoing commitment that reduces your capacity.
When a Broker May Be the Better Choice
Certain situations consistently favour having access to multiple lenders and someone to manage the process. A broker tends to add the most value when:
- Your income is complex, such as self-employed, casual, or heavily reliant on overtime, bonuses, or commission
- You wish to maximise your choice of lenders without doing the work yourself
- You have a low deposit and want to weigh a government guarantee, LMI, or a guarantor
- You need more advice to help you understand your options and the best strategy for you
- You value somebody working in your best interest rather than their own
- You have been declined elsewhere, since another lender’s policy may reach a different result
- You are refinancing to escape a loyalty-tax rate and want to compare the whole field
- You want someone to handle pre-approval, valuation, approval, and settlement on your behalf at a time and location convenient to you
- You are unsure which lender’s policy fits you, and want to avoid unnecessary credit enquiries
If you are weighing up whether to approach a bank directly or compare multiple lenders first, getting home loan guidance can help you understand which path fits your income, deposit, credit profile, and loan goals. This is especially useful if your situation is not completely straightforward or if you want to avoid unnecessary applications before choosing a lender.
When Going Direct to a Bank May Suit You
Equally, there are borrowers for whom going direct is reasonable, and it is worth being honest about them. A bank may suit you when:
- Your finances are simple and strong, with a stable PAYG income and a solid deposit and time is of the essence
- You already have a strong relationship with your bank and a competitive retention offer in hand and don’t want to move lenders
- You want a specific offering available only directly
- You are confident in comparing loans yourself and prefer to deal with one institution
- Your wider banking, such as a business relationship, is tied to that lender
The key is to go direct from a position of knowledge, having compared the market yourself, rather than simply defaulting to your existing bank and assuming it will look after you.
Real Borrower Scenarios
The practical difference between the two paths is clearest through examples. The scenarios below are illustrative and are designed to show the reasoning rather than promise a particular outcome.
The First Home Buyer With a 5% Deposit
Mia has saved a 5% deposit and wants to avoid LMI. Her bank offers its own low-deposit product with LMI added. A broker checks her eligibility for a government guarantee across participating lenders and matches her to one whose policy treats her modest HELP debt favourably, allowing her to buy with no LMI and a workable approval amount. The scheme eligibility mattered, but so did the choice of lender.
The Self-Employed Borrower With One Strong Year
Sam runs a growing business with one strong year of figures but only a short trading history. Several banks want two full years of financials and decline him. A broker identifies a lender whose policy accepts one strong year in his circumstances, and the application proceeds. The difference was not Sam’s finances, but knowing which lender’s policy fit them.
The Investor Needing Rental Income Assessed
Alex is buying an investment property and needs the expected rent counted toward serviceability. Lenders shade rental income differently, and the assumed living-expense and existing-loan treatment varies too. A broker compares how each lender assesses the rental income and the existing mortgage, and selects the one that produces the borrowing capacity Alex needs without overstretching.
The Refinancer on a Loyalty-Tax Rate
Priya has been with the same bank for years and is paying more than new customers. She asks her bank for a discount and receives a modest one. A broker compares her against the wider market, and either secures a materially better rate elsewhere or gives her the evidence to negotiate harder with her current lender. Either way, she decides with full information rather than guesswork.
Risks and Common Misconceptions
A handful of persistent beliefs lead borrowers astray, and recognising them is part of making a sound decision.
- “My bank knows me, so approval will be easier.” Familiarity does not change a lender’s credit policy; the assessment is the same.
- “All brokers compare the whole market.” No broker accesses every lender, so ask about the panel of lenders they can access.
- “The lowest rate is always best.” Rate matters, but features, fees, and approval likelihood matter too; the cheapest advertised rate is not always the best fit.
- “Pre-approval is guaranteed approval.” It is conditional, and a poor valuation or a change in your finances can still derail it.
- “Multiple applications are harmless.” Several enquiries in a short period can weigh on your credit score.
- “A broker is always free.” It usually is for standard loans, but ask about any fee before proceeding.
- “A bank will tell me if another lender is cheaper.” It has no obligation to, and generally will not.
Questions Worth Asking Before You Decide
Whichever way you lean, a few direct questions will sharpen your decision and protect your interests. Asking them signals that you are an informed borrower, which tends to produce better answers.
Questions to Ask a Broker
- How many lenders are on your panel, and which do you use most and why?
- How are you paid?
- Is there any fee for your service in my situation?
- Why is this the right lender and loan structure for me specifically?
Questions to Ask a Bank
- Is this your best available rate, or only the advertised rate?
- Is there a retention or new-customer discount I qualify for?
- Is there an annual package fee, and what features does it include?
- How does your serviceability assessment treat my income and existing debts?
Frequently Asked Questions (FAQs)
1. Is it better to use a mortgage broker or go directly to a bank?
It depends on your situation. A broker compares many lenders and can match you to the one most likely to approve you on suitable terms, which helps most borrowers, especially those with any complexity. Going direct can suit a simple, if you have a strong profile and already hold a competitive offer. The better path is the one that fits your circumstances, not a universal rule.
2. Are mortgage brokers free, and how do they get paid?
For standard residential home loans, brokers are usually at no extra cost to you, because the lender pays them an upfront commission at settlement and a smaller trail commission over time. Some complex scenarios may attract a direct fee, which must be disclosed upfront.
3. Do mortgage brokers get better interest rates than banks?
Not automatically, but a broker can compare rates across many lenders and identify a sharper option than a single bank would offer, and can use that comparison to negotiate. The value is less about a magic lower rate and more about finding the right combination of rate, features, and approval likelihood for your situation.
4. Do brokers compare every lender in the market?
No. Brokers work with a panel of lenders, which is usually broad but not the entire market, and some lenders deal only directly with borrowers. This is why it is reasonable to ask how many lenders are on a broker’s panel and which they use most, so you understand the range being compared on your behalf.
5. Is using a broker bad for my credit score?
Generally, the opposite. Every formal application is a credit enquiry, and several in a short window can weigh on your score. A broker can assess your likely approval across lenders and lodge only with the one most suited to you, which helps avoid the multiple enquiries that can result from approaching several banks directly.
6. Do banks have to act in my best interests?
No. Mortgage brokers are subject to a Best Interests Duty under Australian law, meaning that where a conflict exists, they must prioritise your interests. Banks and their staff are not bound by that duty when selling their own products. This is a meaningful difference, because a broker has a legal obligation to recommend what suits you, while a bank is simply offering its own range.
7. Should I negotiate with my current bank before refinancing through a broker?
It can be worth a quick call to ask your bank for a better rate, since retention discounts are common and cost you nothing to request. The limitation is that you are still only seeing one lender’s offer. Comparing across the market, whether yourself or through a broker, tells you whether your bank’s improved offer is genuinely competitive or merely better than what you were paying.
The Bottom Line
The real question is not whether a mortgage broker or a bank is better in the abstract, but which fits your situation. A bank offers simplicity and a direct relationship, but only one policy and one product set, and no obligation to tell you when something cheaper or more suitable exists. A broker offers breadth across many lenders, a legal duty to act in your interests, and someone to manage the process, with the caveat that no panel covers the whole market.
For borrowers with straightforward finances and a strong offer already in hand, going direct can be a sound choice if you are not looking for market advice. For most others, particularly anyone with a low deposit, variable income, self-employment, or a previous decline, the ability to compare lenders and match policy to circumstances is where the better outcome usually lies. Whichever you choose, decide from a position of information, ask the questions that matter, and remember that a loan structured well for your situation will serve you far longer than a headline rate alone.
