Fixed vs Variable Rate Mortgage After the RBA Decision: Which Suits You in 2026?
The Reserve Bank of Australia’s continued focus on inflation management has renewed attention on one of the most fundamental decisions for any Australian mortgage holder: fixed rate or variable rate. With borrowing costs significantly higher than the lows of 2021–2022, making the right call on this question has real financial consequences. This guide sets out the trade-offs clearly.
Disclaimer: The content of this article is general information only and does not constitute financial or credit advice. Arrivau Pty Ltd ABN 81 643 901 599 CRN 530978 is an authorised credit representative. Please seek independent financial advice before making decisions about your home loan.
The Basic Distinction
A fixed rate home loan locks your interest rate for a defined period — typically 1, 2, 3, or 5 years in the Australian market. During this period your rate, and therefore your monthly repayments, do not change regardless of what the RBA does.
A variable rate home loan has a rate that moves in response to market conditions and your lender’s pricing decisions, which are in turn influenced (though not mechanically determined) by the RBA cash rate.
Neither product is universally superior — the right choice depends on your financial position, risk tolerance, and outlook on rate direction.
Current Rate Environment Context
The RBA cash rate path since 2022 has been the steepest tightening cycle in a generation. Borrowers who fixed in 2020–2021 at sub-2% rates and whose fixed terms have since expired have experienced significant repayment increases as they rolled onto variable rates.
For new borrowers in 2026, the market is different: both fixed and variable rates reflect a higher base, which reduces — but does not eliminate — the strategic divergence between the two options.
Key Advantages of Fixed Rates
Payment certainty: For households with tight monthly budgets, locking in a known repayment amount is valuable. Financial planning, particularly around childcare costs, education expenses, or dual-income risk, becomes more manageable.
Protection against further rises: If you believe (or fear) that the RBA will continue tightening, fixing now insulates you from higher future costs.
Psychological comfort: Removing the uncertainty of monthly repayment variation has genuine value for many borrowers.
Key Disadvantages of Fixed Rates
No benefit from rate cuts: If the RBA reduces rates during your fixed period, you do not benefit. Your repayment stays the same while variable-rate borrowers see theirs fall.
Limited flexibility: Most fixed products cap extra repayments (commonly AUD 10,000–20,000 per year). Exceeding this attracts break costs. Selling or refinancing during the fixed term also typically incurs a break fee, which can be substantial.
No (or limited) offset account: Fixed rate loans in Australia generally do not permit a fully functional offset account. This means your savings cannot reduce your interest-bearing balance in the way a variable loan offset account would.
The revert rate risk: When your fixed term expires, you roll onto the lender’s standard variable rate (SVR), which is often not the most competitive rate available. Failing to act at this point — which many borrowers do — locks them into an unnecessarily expensive product.
Key Advantages of Variable Rates
Rate cut benefits: If the RBA cuts rates, variable borrowers benefit within weeks as lenders adjust.
Full flexibility: Unlimited extra repayments, redraw facilities, and offset accounts are all standard features of most variable rate products. This flexibility is particularly valuable for borrowers who have additional savings to deploy.
No break costs: Refinancing or selling your property on a variable loan incurs only minor discharge fees — no penalty for breaking the contract early.
Competitive market dynamics: Variable rates are subject to ongoing competition between lenders, meaning refinancing to a better deal is straightforward.
Key Disadvantages of Variable Rates
Repayment uncertainty: Your monthly payment can rise at short notice. Budgeting for this variability requires a larger financial buffer.
Exposure to further rises: If rates continue to increase, your costs increase too.
The Case for a Split Loan
A split loan allocates a portion of your mortgage to a fixed rate and the remainder to a variable rate. This approach — available from most major Australian lenders — provides:
- Partial certainty (the fixed portion)
- Partial flexibility (the variable portion, with offset account access)
- Balanced exposure to rate movements in either direction
A common split is 50/50 or 60% variable / 40% fixed. There is no universally optimal ratio — it should reflect your specific cash flow, savings buffer, and rate outlook.
Practical Decision Guide
Consider fixed if:
- You have a tight monthly budget and cannot absorb repayment increases
- You expect rates to rise further
- You do not need significant extra repayment flexibility in the near term
- You plan to stay in the property for the duration of the fixed period
Consider variable if:
- You have savings to deploy into an offset account
- You value flexibility to make large extra repayments
- You expect rates to fall or remain stable
- You may need to sell or refinance within 2–3 years
Consider split if:
- You are uncertain about future rate direction
- You want both certainty and some flexibility
- Your savings exceed what you need day-to-day and you want to maximise offset efficiency on part of the loan
What to Do Now
Regardless of which rate type you hold, the current environment makes a loan review worthwhile:
- Confirm your current rate with your lender
- Compare it against market alternatives on independent comparison sites
- Calculate the net benefit of refinancing after any discharge or break fees
- If your fixed term is expiring within 12 months, begin the review process now — do not wait for automatic rollover
A licensed mortgage broker can compare products from multiple lenders and is legally required to act in your best interests under the National Consumer Credit Protection Act. Check your broker’s credentials on ASIC Connect.
Frequently Asked Questions
Q: What happens to my fixed rate if my lender is acquired or exits the market? Your loan terms continue unchanged. The acquiring entity is obligated to honour the original fixed rate contract terms.
Q: Is the fixed rate I see advertised the rate I will get? Not necessarily. The advertised rate applies to standard lending profiles (certain LVR thresholds, owner-occupier purpose, principal-and-interest). Your actual rate may differ based on your LVR, loan purpose (investment vs owner-occupied), and creditworthiness.
Q: Can I convert from fixed to variable mid-term? Yes, but it will likely incur a break cost, calculated based on the wholesale cost of funds differential. Request a break cost estimate from your lender before making this decision.
Q: Does the RBA cash rate directly set my mortgage rate? No. The RBA cash rate influences the cost at which banks borrow money overnight. Lenders then set their own rates based on funding costs, competition, and margin decisions. The relationship is strong but not mechanical.
Q: What is loan-to-value ratio (LVR) and why does it affect my rate? LVR is the ratio of your loan to the property value. Higher LVR (e.g., 90%) typically attracts a higher rate and requires Lenders Mortgage Insurance (LMI). Lower LVR (e.g., 60%) usually qualifies for the lender’s best rate.