The Easiest Way to Choose Your Loan Structure

Choosing between fixed, variable, and split loan options becomes less about predictions and more about control.

The decision isn't about guessing where rates will move. It's about matching a loan structure to the way your income works and how much certainty you need in your repayments. For self-employed buyers, that decision often starts with understanding what a lender will accept as proof of income, and then building a structure around that reality.

A fixed rate locks your interest rate for a set period, usually one to five years. Your repayments stay the same regardless of what happens in the broader economy. A variable interest rate moves up or down with market conditions, which changes your repayment amount. A split loan divides your borrowing across both structures, giving you partial certainty and partial flexibility.

When you're self-employed, your income might fluctuate across financial years. A portion of your loan on a fixed rate gives you a baseline repayment figure you can budget around. The variable portion allows you to make extra repayments during stronger months without penalty, particularly if that portion includes an offset account.

What a fixed rate gives you when income changes month to month

A fixed rate creates a known repayment for the period you choose. That amount will not change, even if the Reserve Bank raises the cash rate or your lender adjusts variable pricing. For buyers working in trades, contracting, or running a small business, the stability can make cash flow planning more straightforward.

Consider a buyer working as an independent consultant who secured a three-year fixed rate shortly after settlement. Their income peaks between March and June, then drops during the quieter winter months. The fixed portion meant they could allocate a set amount each month without recalculating. They used the variable portion of their split loan to park surplus income in an offset account, reducing interest on that segment while keeping funds accessible if work slowed.

The limitation is that fixed rates typically restrict additional repayments. Most lenders allow between $10,000 and $30,000 in extra repayments per year on a fixed loan without penalty, but anything beyond that may attract break costs. If you sell the property or refinance during the fixed period, those break costs can be significant depending on how far rates have moved since you locked in.

Variable rates and the value of an offset account for uneven income

A variable rate adjusts with the market, but it also unlocks features that matter when your income isn't salaried. The main one is an offset account. Every dollar sitting in a linked offset account reduces the balance on which interest is calculated, without locking that money away.

For self-employed buyers, an offset account becomes a holding zone. You can deposit income as it arrives, let it reduce your interest charges, and withdraw it when you need to pay tax, superannuation, or cover a gap between contracts. The interest saving compounds daily, and the money stays fully available.

Redraw is different. It allows you to access extra repayments you've already made, but the lender controls whether and when you can pull those funds back out. Some lenders process redraw requests within a day. Others take longer, and a small number have paused redraw access entirely during periods of financial stress. For someone managing variable income, that delay or uncertainty can create problems. An offset account avoids that risk because the funds remain in your own transaction account.

Without an offset or redraw facility, extra repayments on a variable loan will still reduce your interest and potentially shorten your loan term, but you lose access to that capital unless you refinance or apply for a further advance.

How a split loan structure reduces risk without removing flexibility

A split loan divides your borrowing into two or more portions. One portion might be fixed for three years, the other variable with an offset account. The fixed portion gives you a floor. The variable portion gives you room to move.

The structure works when you want some insulation from rate rises but don't want to lose the ability to reduce interest through extra repayments. It also works when your income is strong enough to support additional repayments in some months but not predictable enough to commit every dollar to a fixed structure you can't adjust.

You choose the split ratio. A 50/50 split is common, but you could fix 70% and leave 30% variable, or reverse that depending on your priorities. The fixed portion might cover your minimum comfortable repayment level. The variable portion absorbs anything extra you can contribute, and the offset account connected to that portion holds your operating cash.

In our experience, buyers who split their loan often feel less pressure to time the market. They're not trying to predict the perfect moment to fix. They're building a structure that holds up whether rates rise, fall, or stay flat.

What self-employed buyers need to know before applying

Lenders assess self-employed income differently depending on how long you've been operating and what documentation you can provide. Most require two years of tax returns or financials prepared by a registered accountant. Some lenders accept one year of returns if your ABN is less than two years old, particularly if you were previously employed in the same industry.

The income figure a lender uses isn't always your taxable income. They may add back depreciation, one-off expenses, or other deductions to calculate your serviceability. A mortgage broker familiar with self-employed applicants will know which lenders take a more favourable view of your specific structure, whether that's a sole trader ABN, a partnership, a trust, or a company.

If you're applying under the Australian Government 5% Deposit Scheme, the same income assessment applies. The scheme removes the need for lenders mortgage insurance when you're borrowing more than 80% of the property value, but it doesn't change how the lender calculates what you can afford to borrow. Your borrowing capacity still depends on demonstrable income, existing debts, and living expenses.

Pre-approval gives you a conditional commitment before you start looking at properties. For self-employed buyers, pre-approval also confirms that the lender accepts your income documentation and business structure. That removes uncertainty when you're ready to make an offer, particularly in suburbs where stock moves quickly.

Loan features that matter more than the rate itself

The interest rate is important, but the features attached to the loan often determine whether the structure works for you long-term. A variable loan with a slightly higher rate but a full offset account may cost you less over time than a lower-rate loan without one, depending on how much you keep in the offset.

Some lenders charge monthly fees for offset accounts or package fees for access to discounted rates. Others include offset accounts at no additional cost on their standard variable products. The same applies to redraw. Some lenders offer unlimited free redraws. Others charge a fee per transaction or restrict how often you can access funds.

Portability is another feature worth checking. If you sell your current property and buy another before settlement, portability allows you to transfer your existing loan to the new property without breaking the fixed term or reapplying. Not all lenders offer this, and the ones that do may have conditions around timing or property type.

If you're buying in areas like Baldivis, Canning Vale, or Rockingham, where a mix of established homes and new builds are available, confirm whether the lender's loan product applies to both. Some lenders restrict certain features or rates to owner-occupied purchases of established homes only, excluding new builds or off-the-plan purchases.

First home buyer support that works alongside your loan choice

Western Australia provides a stamp duty concession under the First Home Owner Rate of duty. From May this year, the statewide threshold applies regardless of whether you're buying in Perth or a regional area. No duty applies on homes valued up to $600,000. A concessional rate applies on homes between $600,001 and $800,000. The concession works with all loan structures, whether you choose fixed, variable, or split.

The First Home Owner Grant of $10,000 applies to new homes valued under the relevant cap. For most Perth metro buyers, that cap is $800,000. The grant is paid after settlement and can be used to reduce your loan balance, cover settlement costs, or go toward furniture and moving expenses. It doesn't change your borrowing capacity, but it does reduce the cash you need to find from other sources.

If you're using the 5% Deposit Scheme, you can combine it with the state concessions. The scheme allows you to borrow up to 95% of the property value without paying lenders mortgage insurance, provided the property falls within the scheme's price cap. For Perth and regional centres in Western Australia, that cap is $850,000. Both your purchase price and the lender's valuation must sit at or below that figure.

You apply for the scheme through a participating lender, not directly through Housing Australia. The lender arranges the guarantee. A broker can confirm which lenders on the participating panel offer the loan features you need, whether that's a split structure, an offset account, or the ability to make extra repayments on a fixed portion without penalty.

Call one of our team or book an appointment at a time that works for you. We work with self-employed buyers across Perth and can walk you through your options without the jargon.

Frequently Asked Questions