Understanding the basics of Fixed, Variable & Split Loans

The structure you choose for your home loan affects your repayments, your flexibility, and your exposure to rate movements. Fixed, variable, and split configurations each behave differently when rates change, when you need to make extra repayments, or when your circumstances shift.

How Variable Rate Home Loans Work

A variable rate home loan adjusts when your lender changes its interest rate, which typically follows movements in the cash rate set by the Reserve Bank. Your repayments increase or decrease accordingly, with no lock-in period and no penalty for paying off the loan early or making additional repayments.

Most variable products include an offset account, which reduces the interest you pay by offsetting your savings balance against your loan amount. If you hold $40,000 in your offset and owe $600,000, you only pay interest on $560,000. For lawyers with variable income structures or performance-based bonuses, this creates a direct reduction in interest costs without locking funds into the loan itself.

Redraw facilities also appear on most variable loans, allowing you to withdraw extra repayments you've made above the minimum. The distinction matters when you're building liquidity while reducing debt. Funds in an offset remain immediately accessible without requesting a withdrawal, while redraw requires lender approval and may not be available on all loan types, particularly investment loans with specific conditions.

Consider a corporate lawyer refinancing a $750,000 variable rate loan who redirects quarterly bonuses into an offset account. Each deposit reduces the interest calculation from the day it arrives, and the funds remain available if a tax bill or settlement cost appears. That configuration suits someone with irregular income who values both interest savings and liquidity.

Fixed Interest Rate Home Loans and Rate Certainty

A fixed rate home loan locks your interest rate for a set period, typically between one and five years. Your repayments stay the same regardless of whether the cash rate rises or falls during that period, and you know exactly what you'll pay each month.

The limitation appears when you want to make extra repayments or exit the loan. Most fixed rate products cap additional repayments at $10,000 to $30,000 per year, and breaking the loan early triggers break costs if rates have fallen since you fixed. Those break costs reflect the lender's funding loss and can run into five figures depending on how far rates have moved and how much time remains on your fixed term.

Fixed rates also exclude offset accounts in most cases. A small number of lenders offer fixed loans with linked offsets, but the fixed rate itself is usually higher than a standard fixed product to compensate for that feature. You're weighing rate certainty against the flexibility to reduce interest through an offset or pay down the loan faster.

In our experience, fixed loans make the most sense when you have predictable repayment capacity and limited surplus cash flow to direct toward extra repayments. If your income is steady and your budget is structured around known outgoings, locking in repayments removes one variable from your financial planning. If you're likely to receive lumpy income or bonuses that you'd prefer to offset against the loan, a variable structure with an offset delivers better value.

Split Loan Structures and How They're Applied

A split loan divides your borrowing between fixed and variable portions, each with its own rate and features. You might fix 50% of your loan for three years and leave the other 50% variable with an offset, or fix 70% for rate certainty while keeping 30% variable to absorb extra repayments.

The split you choose depends on your tolerance for rate movement and your capacity to make additional repayments. If you want repayment certainty but also expect to receive periodic bonuses, a 60/40 or 70/30 split in favour of fixed gives you stability on the majority of the loan while the variable portion captures offset benefits and accepts extra payments without restriction.

Each portion of a split loan is treated as a separate account. The fixed portion has its own minimum repayment, its own cap on extra repayments, and its own break cost calculation if you exit early. The variable portion operates independently, with full redraw or offset access depending on the product. Managing a split requires attention to which portion you're paying and where surplus funds should sit, but the structure itself isn't complicated once the loan settles.

A litigation lawyer borrowing $900,000 might fix $600,000 for four years to cover the baseline repayment, then leave $300,000 variable with a linked offset account. Salary goes toward the fixed minimum repayment, while bonuses and disbursements cleared during the year sit in the offset to reduce interest on the variable portion. That configuration delivers certainty on two-thirds of the debt while keeping liquidity and flexibility on the remainder.

Comparing Home Loan Rates Across Structures

Fixed rates and variable rates are priced differently and move independently. A fixed rate reflects the lender's view of funding costs over the fixed period, while a variable rate reflects current funding costs and competitive positioning. At any point, fixed rates may sit above or below variable rates depending on market expectations.

When comparing home loan options, the rate itself matters less than the total cost over the period you expect to hold the loan. A variable rate that's 0.15% higher but includes a full offset can cost less over three years than a lower fixed rate if you're holding $50,000 or more in the offset account. The calculation depends on your balance, your offset usage, and your repayment behaviour.

Rate discounts apply differently across fixed and variable products. Some lenders offer deeper discounts on variable loans for lawyers due to LMI waivers or profession-based pricing, while fixed rates may be discounted less because the lender's margin is already compressed. If you're refinancing or applying for a new loan, ask whether the rate quoted is the standard rate or whether a profession-based discount applies to your circumstances.

Loan Features That Affect Structure Choice

Offset accounts, portability, and repayment flexibility don't appear uniformly across fixed, variable, and split products. A variable loan typically includes all three. A fixed loan usually includes none. A split loan includes them on the variable portion only.

Portability allows you to transfer the loan to a new property without discharging and reapplying, which matters if you're selling and buying simultaneously or moving for work. Most variable loans are portable. Fixed loans can be portable, but moving the loan to a new property may still trigger a partial discharge and recalculation of the fixed term depending on the lender's policy.

If you're buying your first property and expect to upgrade within three to five years, a fully fixed loan limits your options when you sell. You'll either pay break costs to exit early or transfer the fixed loan to the new property, which may not suit the new borrowing amount. A variable or split structure gives you more room to adjust when your circumstances change, particularly if you're building equity and expect your borrowing capacity to increase as your income rises.

Switching Between Fixed and Variable Rates

You can move from variable to fixed at any point during your loan term, subject to the lender's current fixed rates and your loan meeting their criteria. Moving from fixed to variable before the fixed term ends triggers break costs, which are calculated based on the difference between your fixed rate and the lender's current funding cost for the remaining period.

Break costs aren't negotiable. They're a contractual charge that reflects the economic loss to the lender when you exit a fixed rate early. If you fixed at 3.5% and rates have since dropped to 2.8%, the lender has locked in funding at a higher cost than they can now lend at, and you're charged for that difference across the remaining term. If rates have risen since you fixed, break costs are usually zero because the lender can re-lend at a higher rate.

When a fixed term ends, your loan automatically reverts to the lender's variable rate unless you choose to refix. That reversion rate is often higher than the variable rate offered to new customers, which is why home loan refinancing is common at the end of a fixed period. You're not locked in once the fixed term expires, and moving to another lender at that point avoids break costs entirely while securing a lower variable rate or a new fixed term.

Choosing the Right Structure for Your Situation

The decision between fixed, variable, and split depends on how much rate movement you're prepared to accept and how much surplus cash flow you expect to have over the next few years. If your income is steady and you prefer known repayments, a fixed rate works. If you're earning variable income, holding surplus cash, or likely to make extra repayments, a variable loan with an offset account delivers better value. If you want elements of both, a split structure lets you allocate borrowings according to your priorities.

In practice, most corporate lawyers we work with choose either a full variable structure or a split weighted toward variable, particularly when they're holding funds for tax, offsetting partnership distributions, or managing irregular billing cycles. The offset benefit outweighs rate certainty when you're consistently holding $30,000 or more in accessible savings, and the flexibility to increase repayments without penalty matters when income is lumpy.

If you're uncertain which structure suits your circumstances, the starting point is understanding your cash flow, your tolerance for repayment fluctuation, and your plans over the next three to five years. Call one of our team or book an appointment at a time that works for you.

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