Variable Rate Loans: What First Home Buyers Should Know

A variable interest rate adjusts with the market, which means your repayments can shift every time the lender changes its rate.

For buyers entering the Western Australian property market with a low deposit, a variable rate loan offers flexibility that a fixed term does not. You can make extra repayments without penalty, access an offset account to reduce interest, and refinance or repay the loan early if your circumstances change. Those features matter when you are managing a tight budget or planning to pay down the loan faster than the standard term.

How Variable Rates Adjust Over Time

Variable rates move in response to lender decisions, which are influenced by the Reserve Bank's cash rate target, funding costs, and competitive positioning. When rates rise, your repayments increase. When they fall, your repayments drop.

Consider a buyer purchasing in Baldivis at the suburb's current median, borrowing with a 5% deposit under the Australian Government 5% Deposit Scheme. If the lender increases its variable rate by 0.25%, monthly repayments on a loan of that size would rise by several hundred dollars. If the buyer has an offset account holding their emergency fund and regular income, the balance in that account reduces the loan principal used to calculate interest, which partially absorbs the rate increase. Without the offset, the full rate rise applies to the entire loan balance.

This is why offset access is a priority for buyers who expect to hold savings or receive irregular income such as bonuses or tax refunds. Not all lenders offer offset accounts on loans with LMI, and some restrict offset functionality to specific loan products. Confirm offset availability before you apply, not after pre-approval is issued.

Offset Accounts vs Redraw Facilities

An offset account is a transaction account linked to your home loan. The balance in the offset account reduces the loan balance used to calculate interest each day. If you hold $20,000 in offset and owe $500,000 on the loan, you pay interest on $480,000.

A redraw facility allows you to access extra repayments you have already made into the loan. If you pay an additional $10,000 into the loan and later need that cash, you can redraw it, subject to the lender's redraw terms. Some lenders charge redraw fees. Some impose minimum redraw amounts. Some restrict redraw access entirely during certain periods.

Offset accounts provide immediate access to your funds without redraw fees or lender approval. For buyers managing variable cash flow, offset accounts are the more practical option. Redraw works if you plan to deposit surplus income into the loan and leave it there, but it does not suit buyers who need regular access to those funds for living expenses or short-term savings goals.

How Low Deposit Loans Interact With Variable Rates

LMI is charged when your deposit is below 20% of the property value. The premium is calculated based on the loan-to-value ratio at the time of purchase. A buyer with a 5% deposit pays a higher LMI premium than a buyer with a 10% deposit, because the lender's risk exposure is greater.

Under the Australian Government 5% Deposit Scheme, the LMI premium is waived. Housing Australia guarantees the difference between your deposit and 20% of the property value, which removes the need for the lender to charge LMI. The scheme applies to properties in Perth and regional Western Australia, with separate price caps depending on the postcode. For Perth and applicable metropolitan postcodes, the cap is $850,000. For the rest of Western Australia, the cap is $600,000. Both the purchase price and the lender's assessed value must sit at or below the applicable cap.

The scheme does not restrict you to variable rate loans, but most participating lenders structure their 5% deposit products as variable rate loans with offset access. Fixed rate options are available through some lenders, but offset accounts are typically not offered on fixed rate loans. If you fix the rate, you lose offset functionality for the duration of the fixed period.

Buyers using the scheme should confirm the loan structure and available features directly with the participating lender before proceeding. Not all lenders on the panel offer the same product features, and some may apply higher variable rates to loans written under the scheme compared to their standard variable rate products.

When a Variable Rate Works Against You

Variable rates introduce uncertainty. If rates rise significantly over a short period, your repayments can increase faster than your income, particularly if you are borrowing at maximum capacity.

In a scenario like this, a buyer on a single income with a 5% deposit might find that a 1% rate increase over 12 months pushes their repayments beyond what they budgeted for. If they have no offset balance and no savings buffer, they are forced to either cut spending elsewhere or seek a loan variation. A loan variation might involve extending the loan term to reduce monthly repayments, but that increases the total interest paid over the life of the loan.

This is where pre-approval serviceability testing provides some protection. Lenders assess your ability to service the loan at a rate higher than the current variable rate, typically by adding a buffer of 3% to the rate you will actually pay. If you can service the loan at that buffered rate, you should be able to absorb moderate rate increases without defaulting. However, serviceability testing does not account for other cost-of-living increases, job loss, or changes in household income.

If you are borrowing at the upper limit of your serviceability, a variable rate loan without a meaningful offset balance or savings buffer is a higher-risk position than borrowing the same amount with 12 months of expenses held in offset.

Using the First Home Owner Rate of Duty Alongside a Variable Rate Loan

The First Home Owner Rate of Duty in Western Australia removes or reduces stamp duty for eligible first home buyers. From 7 May 2026, the same thresholds apply statewide, regardless of whether the property is in Perth, the Peel region, or a regional area.

For homes valued up to $600,000, no duty applies. For homes valued between $600,001 and $800,000, a concessional rate applies. The maximum dutiable value to access the concession is $800,000. For vacant land, no duty applies on land valued up to $450,000, with a concessional rate on land valued between $450,001 and $550,000.

The concession applies to both new and established homes, and it is not restricted to buyers using the Australian Government 5% Deposit Scheme. You can access the duty concession on a loan that sits outside the scheme's price caps, provided your property value falls within the concession thresholds.

This is particularly relevant for buyers purchasing in suburbs where the median price exceeds the $850,000 cap under the 5% Deposit Scheme but still falls within the $800,000 stamp duty concession threshold. In that case, you might use a 10% deposit and pay LMI, but you still avoid or reduce stamp duty under the First Home Owner Rate.

The duty concession is applied at settlement. It does not require a separate application beyond confirming your eligibility when lodging the transfer documents with RevenueWA. Your settlement agent or conveyancer will handle the lodgement, but you should confirm your eligibility with them before signing the purchase contract.

What Happens When You Want to Refinance or Repay Early

Variable rate loans do not charge break fees when you refinance or make lump sum repayments. You can switch lenders, restructure the loan, or repay the full balance without penalty.

This matters if you receive an inheritance, a redundancy payout, or a significant tax refund and want to reduce the loan balance. It also matters if you find a lender offering a lower variable rate or access to features your current lender does not provide, such as offset accounts or fee-free redraw.

Refinancing involves a new credit assessment, a new property valuation, and settlement costs. If property values in your suburb have increased since you purchased, your loan-to-value ratio will have improved, which may allow you to negotiate a lower interest rate or remove LMI from the new loan structure. If property values have declined or remained flat, your loan-to-value ratio may still require LMI on the refinance, depending on how much principal you have repaid.

For buyers who purchased with a 5% deposit and accessed the Australian Government 5% Deposit Scheme, refinancing within the first few years may still result in an LMI charge on the new loan, because your equity position will not yet have reached 20%. Some buyers choose to wait until they have repaid enough principal or benefited from capital growth before refinancing, to avoid paying LMI twice.

Structuring Your Loan Application Around a Variable Rate

Your loan application should reflect how you plan to use the variable rate features. If you intend to hold savings in offset, your application should show that you have a deposit source beyond the minimum required, because lenders want to see that you can maintain a buffer after settlement. If you plan to make extra repayments, your application should demonstrate surplus income or a clear plan to redirect discretionary spending into the loan once settled.

Lenders assess your savings history, your income stability, and your existing commitments when determining serviceability. A buyer with three months of consistent savings and no missed rent payments will be assessed more favourably than a buyer with irregular income and overdrawn accounts, even if both buyers meet the minimum deposit requirement.

Pre-approval confirms that a lender is willing to offer you a loan up to a specified amount, subject to a satisfactory property valuation and no material change in your circumstances. Pre-approval does not lock in a specific interest rate unless you request a rate lock, and rate locks typically apply only to fixed rate loans. For variable rate loans, the rate you receive at settlement will be the lender's current variable rate at that time, not the rate advertised when you applied for pre-approval.

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