Fixed vs Variable Rate Mortgage Australia 2026: Which Is Better Right Now?

How Fixed Rate Home Loans Work in Australia

A fixed rate home loan locks your interest rate for a set period — typically one, two, three, or five years. During that time, your monthly repayment stays exactly the same regardless of what the RBA does. When the fixed period ends, the loan rolls onto the lender's standard variable rate (often called the "revert rate"), which can be significantly higher than the best variable rates in the market. Most borrowers either re-fix or refinance at that point.

The appeal of fixing is straightforward: certainty. You know your repayment to the dollar for the entire fixed term. For first home buyers who have stretched to get into the market, or any household with a tight budget, this predictability can remove real financial stress.

But fixed loans come with genuine trade-offs. Most lenders cap extra repayments at $10,000 per year during the fixed period. Offset accounts — one of the most powerful tools for reducing mortgage interest — are almost never available on fixed rate products. And if you need to exit the fixed term early (because you sell, refinance, or your circumstances change), you will face a break cost that can run into thousands of dollars.

How Variable Rate Home Loans Work in Australia

Variable rate loans move with the market. When the RBA raises rates, lenders typically pass the increase on to variable borrowers within a few weeks. When the RBA cuts, the same flow-through happens in reverse — though lenders are not always as quick to pass on cuts as they are to pass on hikes.

The big advantage of variable loans is flexibility. You can make unlimited extra repayments, use a full offset account, access redraw facilities, and switch lenders at any time without penalty. If you are the type of borrower who puts every spare dollar into your mortgage, or who actively uses an offset account to reduce your interest while keeping funds accessible, variable is almost always the better structural choice.

The risk, as millions of Australians have experienced since May 2022, is upward rate movement. A borrower with a $700,000 loan at the start of 2026 is now paying approximately $295 more per month than they were in January — the cumulative effect of three consecutive 0.25% hikes this year alone. That is roughly $3,540 per year in extra repayments on the same loan amount. Want to see exactly how a rate change affects your monthly repayments? Use CalcPhi's free Mortgage Calculator to model different rate scenarios in seconds.

The RBA Rate Environment in May 2026

Understanding the current rate cycle is central to the fixed versus variable decision — though no one, including the RBA itself, can predict the future with certainty. Here is where things stand as of May 2026:

• The cash rate is 4.35%, the highest it has been since late 2011
• The RBA has hiked three times in 2026 (February, March, and May), adding a total of 0.75% since January
• Headline CPI sits at 4.6% and trimmed mean is at 3.3% — both above the 2–3% target band
• The Board's May statement was more cautious in tone, suggesting a "data-dependent, wait-and-see" stance rather than pre-committing to further hikes
• Market pricing implies the cash rate could reach 4.6% by end-2026, meaning potentially one more hike (most likely at the August meeting), though this is not certain
• A pivot toward rate cuts is not being priced by markets until at least mid-2027

In a rising rate environment where further hikes remain possible, fixing today locks in known protection against any additional increases. However, it also means you would miss out on the relief of rate cuts when they eventually arrive — which market pricing suggests won't be until 2027 at the earliest.

Current Fixed vs Variable Rates: May 2026 Snapshot

The rates below are indicative based on market conditions in May 2026. Your actual rate will depend on your loan-to-value ratio, lender, and whether you are owner-occupier or investor.

Loan Type	Indicative Rate Range	Monthly Repayment ($600K, 30yr)	Offset Account	Break Cost Risk
Variable — online/non-major lender	6.39–6.75%	$3,748–$3,895	Yes	None
Variable — major bank (CBA, ANZ, NAB, Westpac)	6.84–7.10%	$3,936–$4,021	Yes	None
Fixed 1-year	6.25–6.60%	$3,693–$3,812	Rarely	Low
Fixed 2-year	6.35–6.70%	$3,731–$3,853	Rarely	Medium
Fixed 3-year	6.45–6.85%	$3,770–$3,940	Rarely	Medium-High
Fixed 5-year	6.60–7.00%	$3,812–$3,991	No	High

Indicative figures only. Actual rates vary by lender, LVR, and loan type. Fixed rates are priced off swap markets, not the RBA cash rate directly.

One striking thing about the current rate table: competitive one and two year fixed rates are actually lower than major bank variable rates. This means switching to a fixed rate with a competitive lender offers both rate certainty and a potential saving relative to what borrowers are currently paying at the major banks — but only if you are prepared to accept the inflexibility that comes with fixing. If you are comparing what you currently owe against what you could be paying, CalcPhi's Refinance Calculator can model whether switching makes financial sense for your loan.

Break Costs: What Happens If You Need to Exit Early

Break costs are one of the most misunderstood aspects of fixed rate loans. They apply when you exit a fixed rate before the term expires — whether because you sell the property, refinance, or simply decide to switch products. Break costs are calculated based on the difference between your contracted fixed rate and the current wholesale rate for the remaining term, multiplied by your outstanding loan balance and time remaining. A simplified version:

Break cost ≈ Outstanding balance × (Fixed rate − Current wholesale rate) × Remaining years

In a rising rate environment — which is exactly where we are now — if current wholesale rates are higher than your fixed rate, the break cost is typically zero or minimal. This is actually a useful quirk for borrowers fixing in 2026: because market rates are elevated, the risk of a large break cost is currently lower than it would be in a falling rate environment.

The danger comes later. If the RBA begins cutting rates in 2027 and you are still locked into a three or five year fixed term from 2026, you would face a significant break cost to exit the fixed loan and refinance to a cheaper rate. This is worth modelling carefully before committing to a long fixed term.

The Split Loan Option: Hedging Your Bets

A split home loan divides your mortgage into a fixed portion and a variable portion. A common split is 60% fixed and 40% variable, though any ratio is possible. This approach is particularly popular when borrowers want some certainty on their repayments but cannot afford to give up their offset account entirely.

On a $700,000 loan, for example, you might fix $420,000 for two years and keep $280,000 on a variable rate with full offset access. If you hold $80,000 in your offset account, you save interest on the full $80,000 against the variable portion — a meaningful benefit. Split loans also reduce break cost exposure: it only applies to the fixed portion, not your entire loan.

The trade-off is that you get neither full certainty nor full flexibility. Whether a split structure is worth it depends on how much value you place on your offset account and how much financial stress would come from an additional rate hike.

Which Should You Choose in 2026?

There is no universal answer — the right choice depends on your personal circumstances, risk tolerance, and financial buffer.

Choose variable if:

You use an offset account actively and hold meaningful savings in it — because offset is unavailable on fixed loans, this benefit alone often outweighs a small rate difference. You may need to sell the property, refinance, or access equity in the next few years. You have a financial buffer to absorb a potential further 0.25–0.50% rate increase without serious stress. You believe the RBA is at or near the peak of this tightening cycle and cuts will arrive sooner than market pricing suggests.

Choose fixed if:

Rate certainty would meaningfully reduce your financial stress — particularly if your budget is stretched and another $90–$150 per month would be difficult to absorb. You are confident you will not need to sell or break the loan during the fixed period. You want to protect against a scenario where inflation remains stubborn and the RBA hikes again at the August meeting. A 1–2 year fixed term at a competitive rate currently offers lower rates than major bank variable products, which makes the near-term case for fixing more compelling than it was six months ago.

Consider a split if:

You want partial protection against further rate hikes but cannot give up your offset account. You are uncertain about the rate outlook and want to hedge. You have a large enough loan balance that protecting even 50–60% of it from a further hike has material dollar value.

What Happens When Your Fixed Rate Expires?

This is the moment many borrowers underestimate. When your fixed term ends, your loan does not automatically roll onto the best variable rate available. It rolls onto the lender's standard variable rate — often called the revert rate — which is typically 0.40–0.80% higher than the competitive rates offered to new customers.

If you fix today and take no action at expiry, you could end up on a rate that is significantly above the market. The solution is simple but requires calendar discipline: mark your fixed rate expiry date, and start comparing rates 60–90 days before it arrives. You can re-fix, switch to a variable rate with the same lender, or refinance to a new lender entirely. Use CalcPhi's Mortgage Calculator to model what your repayments would look like at different revert rates so you are never caught off guard.

Don't Overlook the Offset Account Advantage

Before making a final decision, it is worth quantifying what you would be giving up by fixing. If you hold an average balance of $50,000–$100,000 in an offset account, the interest savings can be substantial over a 2–3 year fixed period.

On a $600,000 variable loan at 6.50%, holding $80,000 in offset effectively reduces your interest-bearing balance to $520,000. That saves you approximately $5,200 in interest over a year — or about $433 per month. If a fixed rate is only 0.25% cheaper than your variable rate, the offset saving can easily outweigh the rate difference. CalcPhi's Offset Account Calculator lets you model this comparison precisely for your own balance and offset amount.

Frequently Asked Questions

• Is it a good time to fix my mortgage in Australia in 2026?

  With the cash rate at 4.35% and markets pricing in the possibility of another hike at the August 2026 meeting, fixing offers genuine protection against further increases. Short-term fixed rates (1–2 years) are currently lower than major bank variable rates, which adds to the case for fixing. However, if you hold a significant offset balance, or if you may need to sell or refinance within the fixed term, variable may still be the better structural choice. There is no single right answer — it depends on your budget flexibility and circumstances.

• What is the RBA cash rate in May 2026?

  The RBA cash rate target is 4.35%, effective 6 May 2026. This is the third increase in the current 2026 tightening cycle, following hikes in February and March. The next RBA decision is scheduled for 16 June 2026. All four major banks and most non-major lenders have passed the increase through to variable rate customers.

• How much does a 0.25% rate rise add to my mortgage repayments?

  On a $600,000 loan with 25 years remaining, a 0.25% increase adds approximately $91 per month. On a $700,000 loan, the increase is roughly $110–$120 per month. The three hikes so far in 2026 have added a combined $270–$360 per month on a $700,000 loan compared to January 2026. Use CalcPhi's Mortgage Calculator to see the exact impact for your loan balance.

• Can I make extra repayments on a fixed rate loan?

  Most Australian lenders allow extra repayments of up to $10,000 per year on fixed rate loans without penalty. Beyond that limit, excess repayments typically attract a break cost. Some smaller lenders offer fixed products with higher or unlimited extra repayments — this is worth asking about specifically if you plan to make significant overpayments during the fixed term.

• What is a mortgage break cost and how is it calculated?

  A break cost — also called an economic cost or early repayment adjustment — applies when you exit a fixed loan before the term ends. It is calculated based on the difference between your fixed rate and the current wholesale rate for the remaining term, multiplied by your outstanding balance and time remaining. In a rising rate environment like 2026, break costs are typically low because current wholesale rates are higher than older fixed rates. However, if you fix now and rates fall significantly in 2027, a break cost could be substantial if you want to exit the fixed term early.

• What is a split home loan?

  A split loan divides your mortgage into a fixed portion and a variable portion. You get partial rate certainty on the fixed share, while the variable share gives you offset account access and flexibility. For example, on an $800,000 loan you might fix $500,000 and keep $300,000 variable. Split loans are popular when borrowers want some budget stability without giving up offset account access entirely.