Many first home buyers spend weeks comparing interest rates and almost no time thinking about loan structure. That’s understandable, rates are visible, tangible, and easy to compare on a spreadsheet. But the rate is only one part of what determines how much your mortgage actually costs over 30 years. The first home buyer loan you choose, the deposit pathway you take, and the features you build in from day one can collectively save (or cost) you tens of thousands of dollars before your first refinance even comes around.
The reality is that there are multiple loan structures, at least three meaningful federal government schemes, and several deposit strategies that many buyers aren’t aware of, including the First Home Super Saver Scheme, guarantor arrangements, and government guarantee pathways. Getting this right from the start matters more than shaving 0.1% off your rate. That’s the distinction between a rate-finder and a mortgage strategist, and it’s the approach the team at Your Home Loan Consultant takes with every first home buyer they work with.
This guide gives you the practical walkthrough: first home buyer loan types, low-deposit options, what LMI actually costs, how lenders assess what you can borrow, and what to do before you apply.
First home buyer loan types: what you need to understand
The choice between variable, fixed, and split isn’t just a preference question. Each structure carries real trade-offs that interact with your financial situation, your life plans, and the current rate environment. Right now, with the RBA cash rate sitting at 4.60% following four hikes across 2026, that context matters.
Variable rate loans: flexibility with some uncertainty
A variable rate loan moves with the RBA cash rate, meaning your repayments can rise or fall over the life of the loan. As of October 2026, average new variable owner-occupier rates sit at around 6.24% to 6.25%, with the most competitive advertised rates closer to 5.69% depending on the lender and borrower profile. Variable loans often include offset accounts, extra repayment facilities, and redraw access, though these features vary by lender and product, so it’s worth confirming what’s included before committing. For first buyers whose income and savings position will evolve over time, that flexibility has real financial value.
Fixed rate loans: certainty at a cost
Fixing your rate locks in a set repayment for a nominated period, usually one to five years. The appeal is obvious: you know exactly what you’ll pay each month regardless of what the RBA does. The trade-off is meaningful. Break costs can be significant if you exit early, extra repayments are often capped or prohibited, and you won’t benefit from any rate cuts during the fixed period. Fixed loans suit specific situations, particularly borrowers on tight budgets who need repayment certainty, but they’re not a universally “safer” choice.
Split loans: a middle ground worth considering
A split loan divides your mortgage into fixed and variable portions. You get repayment certainty on the fixed component while retaining offset account access and extra repayment flexibility on the variable portion. For example, on a $600,000 loan, you might fix $360,000 (60%) and leave $240,000 (40%) variable. The variable portion remains linked to your offset account, so any savings you hold there reduce the daily interest calculated on that component. Common splits run roughly half-and-half, though many borrowers lean toward a slightly larger variable portion when flexibility is a priority.
Choosing a first home buyer loan with a deposit under 20%: your real options
In Brisbane, the median dwelling value sits at just over $1,048,000 as of late September 2026. A 20% deposit on that figure is nearly $210,000. For most first buyers, that number is either unreachable or would require years more saving. The good news is that there are genuine, government-backed pathways to get in sooner without paying the full LMI premium.
The government’s 5% deposit scheme (no places cap, no income limit)
The federal government’s 5% Deposit Scheme, previously called the First Home Guarantee, is the most practical low-deposit home loan tool available to eligible first buyers right now. Since 1 October 2025, the scheme has operated with no places cap and no income limit. To be eligible, applicants must be Australian citizens or permanent residents aged 18 or over who have not owned property in Australia during the past 10 years. You need a minimum 5% deposit, and LMI is waived because the government guarantees the lender’s risk. The loan must be owner-occupier and principal-and-interest, arranged through a participating lender. For Queensland buyers, the property price cap is $1,000,000, and you must live in the property as your principal residence.
Guarantor loans: using a family member’s equity
A guarantor loan allows a parent or close relative to offer equity in their own property as additional security for your loan. This brings your effective LVR below the LMI threshold without you needing a larger deposit. The “limited guarantee” structure means only the shortfall portion is secured against the guarantor’s property, not the entire loan amount. Once your equity builds through repayments and property growth, the guarantee can generally be released, a process that typically takes two to five years and requires a formal lender application and valuation. This route carries real risk for the guarantor: if you default, their property is exposed. Independent legal and financial advice is essential before proceeding.
Help to Buy: the shared equity alternative
Help to Buy is a federal shared equity scheme where the government contributes up to 30% of an existing home’s purchase price or 40% for a new build, reducing the loan you need to carry. The minimum deposit is 2%, and income caps apply: $103,000 for individual applicants and $165,000 for joint applicants. Only Australian citizens are eligible; permanent residents are excluded. The government retains an equity stake that must generally be repaid when the property is sold or when you exit the scheme. Help to Buy suits a specific profile, the conditions are more restrictive than the 5% Deposit Scheme, so it’s worth understanding whether you meet first-home buyer eligibility requirements before pursuing this path.
What LMI actually costs and how to avoid it
Lenders mortgage insurance is charged when your LVR exceeds 80%, meaning your deposit is below 20% of the lender-assessed property value. It protects the lender, not you, and the cost scales sharply with how small your deposit is. On a $600,000 property, a 5% deposit ($30,000) attracts approximately $22,788 in LMI. Increase the deposit to 10% ($60,000) and the premium drops to around $11,772. Push to 15% ($90,000) and it falls further to roughly $5,941. Moving between LMI pricing bands, which sit around 85%, 90%, and 95% LVR, can save thousands with a relatively modest increase in deposit.
LMI can be capitalised into the loan, which avoids an upfront cash payment but means you pay interest on the premium across the loan term, increasing the total cost. The main strategies to reduce or avoid LMI are:
- Saving to a 20% deposit (the standard route)
- Using the government’s 5% Deposit Scheme (LMI waived for eligible borrowers)
- Using a family guarantor or limited pledge arrangement
- Qualifying for a professional waiver, some lenders waive LMI for eligible professions such as doctors, lawyers, and accountants, subject to income, employment, and LVR conditions
LMI premiums also differ across insurers, so comparing lenders before assuming the cost is fixed is worthwhile.
How lenders work out how much you can borrow
The most common surprise in the first home buyer journey is that pre-approval comes back lower than expected. Understanding how lenders assess serviceability removes that surprise and gives you the ability to take steps that genuinely improve your borrowing capacity before you apply.
The serviceability test and the 3% interest rate buffer
APRA requires lenders to assess your repayments not at the actual loan rate but at the actual rate plus at least 3 percentage points. If your loan is priced at 6.2%, the lender stress-tests it at approximately 9.2%. This buffer exists to ensure you can still service the loan if rates rise. It is the primary reason many buyers qualify for substantially less than they expect, and it affects everyone equally regardless of lender or loan size.
What quietly reduces your borrowing capacity
Credit card limits are assessed as potential repayment obligations, even if you pay the balance in full every month. As a rough guide, and this figure varies by lender and applicant profile, every $1,000 in monthly credit card limit can reduce your borrowing capacity by around $5,000 to $6,000. HECS-HELP debt, car loans, and buy-now-pay-later commitments all reduce your assessed surplus. Declared living expenses are compared against the Household Expenditure Measure (HEM), and lenders use whichever figure is higher, so declaring unusually low expenses does not help if your spending pattern triggers the benchmark. Two buyers on identical incomes can be approved for very different borrowing amounts depending on their liabilities and declared expenses.
Building a loan structure that saves interest from day one
Understanding your options is the foundation. Choosing the right structure is where first home buyers either get it right from the start or spend years correcting a setup that wasn’t designed for them. Loan structure, the features you include, how repayments are configured, and whether an offset account is attached, can determine tens of thousands of dollars in total interest over the life of the loan.
Why loan structure matters as much as the rate
Two buyers with identical interest rates but different loan structures will often arrive at very different outcomes over 30 years. A buyer with a 100% offset account who parks their salary and savings there each month reduces the interest-bearing balance daily, effectively paying interest only on the net figure. On a $600,000 loan, consistently holding $30,000 in an offset account reduces the principal on which interest accrues, compounding meaningful savings over time. For first home buyers who have accumulated savings while renting, an offset account is particularly powerful from settlement day. It’s worth confirming which lenders offer offset access at 90% to 95% LVR, as not all products include this feature at higher loan-to-value ratios, availability depends on the specific lender and product.
How a mortgage strategist approaches your first home loan
There’s a meaningful difference between a broker who finds a competitive rate and moves on, and a mortgage strategist who maps out the full structure, quantifies the dollar difference between a standard setup and a smarter one, and builds a loan aligned with where you want to be financially. The team at Your Home Loan Consultant works this way with first buyers specifically. Their stage-based consultation approach means you get guidance matched to where you are in the journey, not a generic loan recommendation. Whether your priority is maximising cash flow, paying down the loan faster, or preserving flexibility to invest later, the structure needs to reflect that from day one, not after your first refinance.
A practical checklist before you apply
Before approaching a lender or submitting an application, work through these steps:
- Check your first home buyer eligibility for the federal 5% Deposit Scheme and Queensland’s First Home Owner Grant ($30,000 for eligible new homes valued under $750,000 on contracts signed from 1 July 2026)
- Reduce unnecessary credit card limits and pay down or close buy-now-pay-later accounts
- Build a clear three-to-six-month record of genuine savings
- Get a borrowing capacity estimate from a mortgage broker before inspecting properties
- Confirm property price caps in your target suburbs against the relevant scheme thresholds
- Calculate the full purchase cost: deposit plus stamp duty plus legal and inspection fees, not just the deposit figure
Choosing the right first home buyer loan: structure beats the lowest rate
The best first home buyer loan is not simply the one with the lowest headline rate. It’s the one structured correctly for your deposit situation, your income and liabilities, and your financial goals over the next five to ten years. Variable, fixed, and split loans each have a role. Government schemes like the 5% Deposit Scheme and Help to Buy exist to solve real problems for real buyers. LMI can be avoided or significantly reduced with the right strategy. And the loan structure you start with shapes every refinance, every repayment, and every dollar of interest you pay from day one.
First home buyers who take the time to get this right at the beginning consistently end up in a better financial position than those who prioritise speed over strategy. The options are genuinely good in 2026. The key is knowing which combination suits your situation.
If you’d like a clear picture of your borrowing capacity, government scheme eligibility, and the right first home buyer loan structure for your circumstances, reach out to the team at Your Home Loan Consultant for a no-obligation conversation. Getting the structure right from the start is one of the highest-value decisions you’ll make in the entire property buying process.