Fixed vs Variable Home Loan in Australia 2026 – Which Wins

Last updated: September 2026

In Australia in 2026, a fixed home loan buys you repayment certainty for one to five years, and a variable loan buys you flexibility — an offset account, unlimited extra repayments and the ability to refinance without a break cost. With the RBA having lifted the cash rate three times this year, certainty is worth more than it was in 2025, but it still costs something.

Here's the honest version most comparison pages skip: the fixed-versus-variable decision is rarely worth more than about $100 a month on a typical $600,000 loan at today's rates. The features you give up when you fix — offset, unlimited extras, free exit — are usually worth more than the rate gap. Which is exactly why the answer depends on your circumstances rather than on a rate table.

This guide runs the real numbers on a $600,000 loan, explains what fixed rate break costs actually are in a rising market, covers split home loan pros and cons, and shows you how to model your own position in about 30 seconds.

Run your own numbers first: Mortgage Comparison Calculator

Key takeaways

• Fixed locks your rate for a set term (usually 1–5 years); variable moves with your lender's pricing. Neither is "better" — they solve different problems.
• On a $600,000 loan over 30 years at 6.00% p.a., repayments are about $3,597 a month. A 0.25% difference in rate is worth roughly $95 a month; a 2% rate rise is worth about $805 a month.
• Around 4% of new home loans written through broker aggregator AFG in May 2026 were fixed — down from about 46% at the 2022 peak. Australians overwhelmingly stay variable.
• In a rising-rate market, break costs are usually small — sometimes close to zero. Break costs bite when wholesale rates fall after you fix, not when they rise.
• A split loan gives you about half the protection for about half the lost flexibility. Fix half a $600,000 loan and a 2% rise on the variable half costs you roughly $403 extra a month instead of $805.
• Variable wins if you'll use it. An extra $500 a month on a $600,000 loan at 6.00% clears it about eight years early and saves roughly $212,000 in interest — something most fixed loans cap or ban outright.
• Fixed rates in Australia almost always come without a full offset account and with an annual cap on extra repayments. That's the real trade, not the headline rate.

Table of contents

1. What's the difference between a fixed and variable home loan?
2. What do fixed and variable rates cost in 2026?
3. Should I fix my home loan in 2026?
4. What do you actually give up when you fix?
5. Split home loan pros and cons
6. What are fixed rate break costs?
7. How the APRA buffer changes what you can borrow
8. How to use a home loan comparison calculator properly
9. Which borrower should choose which
10. Frequently asked questions

What's the difference between a fixed and variable home loan?

A fixed home loan locks your interest rate — and therefore your repayment — for an agreed term, usually one to five years. A variable home loan moves up and down with your lender's pricing, which in turn follows the RBA cash rate and the bank's own funding costs.

That's the whole mechanical difference. Everything else follows from it.

Because the lender has to buy certainty in the wholesale market to give you a fixed rate, fixed loans come with restrictions attached: capped extra repayments, usually no full offset account, and a break cost if you exit early. Variable loans carry none of that, which is why they dominate the Australian market.

One detail catches plenty of borrowers out: when your fixed term ends, your loan doesn't stay fixed. It rolls onto the lender's revert rate — often a standard variable rate that is materially higher than what a new customer would be offered. If you fix, diarise the expiry date now.

Two terms worth knowing before you keep reading. LVR is your loan-to-value ratio — the loan divided by the property value. Above 80% LVR you'll usually pay LMI (Lenders Mortgage Insurance), a one-off premium that protects the lender, not you. Both affect which fixed and variable products you can even access. We've covered the premium side of that in detail in our guide to what LMI costs in Australia.

What do fixed and variable rates cost in 2026?

On a $600,000 loan over 30 years, every 0.25% p.a. of interest rate is worth roughly $95 a month in repayments. That's the number to hold in your head while you compare a fixed rate to a variable one.

Here's the full picture across the rate band Australian owner-occupiers are seeing in 2026, calculated on principal-and-interest repayments over a 30-year term.

Disclaimer: These are general estimates as at September 2026. This is a price indication only — your broker or lender will confirm the final figures after reviewing your circumstances. Actual rates vary by lender, LVR, loan size, product features and your credit profile.

Where the market actually sits: Finder's September 2026 rate data puts the average variable rate at 6.90% p.a. and the average fixed rate at 6.69% p.a., while the sharpest advertised owner-occupier rates sit near 5.69% variable and 5.79% fixed. On a $600,000 loan, the gap between the lowest fixed and the lowest variable is about $38 a month — a rounding error against the features you'd be giving up.

Methodology and where these numbers come from

Every repayment figure above is produced by the same amortisation formula that powers Leadkit's home loan repayment calculator and mortgage comparison calculator — monthly compounding, principal and interest, no fees.

The base case is the calculator's own default scenario: a $600,000 loan, a $120,000 deposit, a 30-year term and 6.00% p.a., which is the owner-occupier variable assumption Leadkit ships across its finance calculators for 2026. Leadkit builds and maintains those calculators, so this is our own rate data rather than independent third-party research — treat it as a modelling assumption, not a rate offer.

Should I fix my home loan in 2026?

Fix if a rate rise would genuinely hurt your household budget; stay variable if you have room to absorb one and intend to use an offset account or make extra repayments. That is the decision in one sentence, and the 2026 rate cycle sharpens it rather than changes it.

The context matters. The Reserve Bank of Australia has raised the cash rate three times in 2026 — February, March and May — taking it from 3.60% to 4.35%, then held it in August. Bank economists broadly expect at least one more increase before the end of the year, though they disagree on the timing.

So why aren't Australians piling into fixed rates? Because most of them have already seen this film. Broker aggregator AFG's Mortgage Index put the fixed-rate share of new loans at around 4% in May 2026, up only slightly from the 3% range earlier in the year, against roughly 46% at the mid-2022 peak. The cohort that fixed at 2% in 2021 and rolled off onto 6% in 2023 is not in a hurry to repeat the exercise.

Fixing is a hedge, not a bet. You're not trying to beat the market — you're paying a small premium to take one variable out of your budget. That's worth doing when:

• Your repayment already sits above 30% of household income.
• You're on a single income, in a new business, or about to go on parental leave.
• You're at or near your borrowing limit, with no meaningful savings buffer.
• Repayment uncertainty is genuinely costing you sleep. That's a real cost, even if it doesn't appear on a spreadsheet.

Staying variable makes more sense when you have a cash buffer sitting in offset, you expect a lump sum (a bonus, an inheritance, a property sale), or you're likely to move or refinance inside the next two or three years.

Not sure how much rate movement your budget can absorb? Model a rate rise against your actual loan with the refinance savings calculator before you commit to anything.

What do you actually give up when you fix?

Fixing costs you three things that most borrowers undervalue: the offset account, unlimited extra repayments, and a free exit. For plenty of households, those are worth considerably more than the rate difference.

The offset account. An offset is a transaction account linked to your loan; the balance is subtracted from the loan before interest is calculated. Leadkit's home loan repayment calculator assumes a typical average offset balance of $25,000 — at 6.00% p.a., that's $125 a month, or $1,500 a year, of interest you simply don't pay. Park an emergency fund there and the saving is effectively a tax-free return. Most fixed products either don't offer a full offset or only offset part of the balance.

Unlimited extra repayments. This is the big one. Add $500 a month to a $600,000 loan at 6.00% and you clear it in about 22 years instead of 30, saving roughly $212,000 in interest. Fixed loans typically cap extra repayments at a few thousand dollars a year, with a fee or a break cost beyond it. If you're genuinely going to pay extra, a fixed rate can quietly cost you far more than it saves.

A free exit. Variable borrowers can refinance whenever a better offer appears. Fixed borrowers can't — not without a break cost calculation first.

Redraw sits in the middle: it lets you pull back the extra repayments you've already made. Handy, but it's the lender's money until you ask for it, and redraw can be restricted or reviewed. An offset balance is yours.

Split home loan pros and cons

A split home loan fixes part of your balance and leaves the rest variable — you get partial repayment certainty while keeping an offset and extra repayments on the variable portion. It's the compromise most brokers reach for when a borrower genuinely can't call the rate cycle.

The maths is refreshingly simple. Take that $600,000 loan and split it 50/50 — $300,000 fixed at 5.75% and $300,000 variable at 6.00%:

A split halves your exposure to a rate rise, and halves how much flexibility you sacrifice. That's the entire pitch.

Pros

• Rate rises only hit part of your balance, so repayment shock is proportionally smaller.
• You keep an offset account and unlimited extra repayments on the variable split.
• Break costs, if you exit early, apply only to the fixed portion.
• You capture some benefit if rates fall, rather than none.

Cons

• You're guaranteed to be half wrong in either direction — a split never fully wins.
• Two sub-accounts means two repayment amounts and, at some lenders, two sets of fees.
• The fixed split still expires and reverts, so you still have to manage a rollover date.
• Small splits aren't worth the admin. Below about 20% on either side, just pick one.

The split ratio should follow your budget, not a hunch. A common approach: fix the portion of your repayment your household couldn't absorb a rise on, and leave the rest variable.

What are fixed rate break costs?

A break cost is what your lender charges when you exit a fixed rate early — and it is not a flat fee. It's an estimate of the lender's actual economic loss, based on your remaining balance, the time left on the fixed term, and how far wholesale rates have moved since you fixed.

Here's the part that surprises people: break costs mainly hurt when rates have fallen since you fixed. Your lender funded your fixed rate in the wholesale market; if it now has to re-lend that money at a lower rate, it wears the difference and passes it to you. If wholesale rates have risen since you fixed — as they have through 2026 — the lender can often re-lend at a profit, and your break cost can be small or close to zero.

The rough shape of the calculation is: remaining balance × the rate movement against the lender × the years left on the fixed term. On a $400,000 balance with two years to run and a 1% adverse move, that's in the order of $8,000 — which is why nobody should break a fixed loan without asking their lender for a written break cost figure first. Every lender calculates it slightly differently, and the number is valid on the day it's quoted.

Under the National Credit Code, break costs on regulated consumer loans must be a reasonable estimate of the lender's actual loss — lenders aren't permitted to profit from them. ASIC's Moneysmart explains the break fee mechanism in plain English, and the Australian Financial Complaints Authority handles disputes if you think a charge is unreasonable.

Break costs also apply when you sell, when you switch to variable mid-term, and sometimes when you pay more than the annual extra-repayment cap. Selling inside your fixed term is a genuinely common trigger — if there's any chance you'll move, that's an argument for a shorter fixed term or a split.

Disclaimer: The break cost figure above is an illustration of how the calculation works, not a quote. Only your lender can calculate your actual break cost, and it changes daily.

How the APRA buffer changes what you can borrow

Australian lenders must assess your application at your actual rate plus 3 percentage points — the APRA serviceability buffer — regardless of whether you're applying for a fixed or variable loan. APRA confirmed in May 2026 that the buffer stays at 3%.

So if you apply at 6.00%, the bank tests whether you could still afford the loan at 9.00%. On a $600,000 loan that's the difference between a $3,597 repayment and $4,828 — about $1,230 a month more. The buffer typically trims borrowing capacity by roughly 15–20%.

Two practical consequences:

1. Fixing doesn't unlock a bigger loan. The buffer is applied either way, so choosing a fixed rate to get approved for more won't work.
2. You've already been stress-tested. If your loan was approved recently, the lender has verified you could handle a 3% rise on paper. That doesn't make a rise comfortable — but it does mean the "what if rates jump" fear is already partly priced into your approval.

Worth noting that Leadkit's mortgage comparison calculator defaults to a +0.5% stress test rather than APRA's 3%, because brokers typically model a realistic near-term move rather than the regulatory worst case. Both are useful — the 0.5% number tells you about next year, the 3% number tells you about your ceiling. If you want to see where that ceiling sits, Leadkit's borrowing power calculator applies the same logic to your income and expenses.

How to use a home loan comparison calculator properly

A home loan comparison calculator is only useful if you compare the same loan under different conditions — not different loans under different assumptions. Most people run one scenario, see a number, and stop. Run three.

The three scenarios that actually answer the fixed-versus-variable question:

1. Your loan at today's rate. The baseline — what you pay right now.
2. Your loan stress-tested. Add 0.5%, 1% and 2% and look at the monthly increase, not the total interest. Total interest over 30 years is a scary number that nobody feels; an extra $400 a month is a number you feel every fortnight.
3. Your loan at the best rate you could realistically get. If switching lenders saves more than fixing does, that's your answer — and it doesn't require you to predict anything.

Leadkit's mortgage comparison calculator runs all three at once. It ships with a $600,000 loan over 30 years at 6.00%, a +0.5% stress test and a 5.50% refinance comparison as its 2026 defaults, plus toggles for offset and redraw so you can see what those features are worth in dollars rather than in theory.

One thing no calculator can model: your break cost. That number comes from your lender, on the day, in writing.

Australia-wide, the numbers move but the method doesn't. A Sydney borrower with a $900,000 loan and a Brisbane borrower with a $450,000 loan are doing the same arithmetic — the Sydney borrower just feels every rate move twice as hard. At 6.00%, a 2% rise costs a $450,000 borrower roughly $604 a month and a $900,000 borrower about $1,208.

Across Leadkit's library of 202 live calculators, finance and property is the second-largest category with 26 calculators — 15 of them full quote calculators that return a figure, and 11 enquiry forms for brokers who price manually. You can browse the lot on the home loan calculator category page.

Which borrower should choose which

Match the loan type to your circumstances, not to a rate forecast. Here's how the decision usually lands.

Choose fixed if you're: a first home buyer at your borrowing limit; on a single or irregular income; budgeting to the dollar; planning to stay put for the whole fixed term; or you simply value certainty more than optionality. A shorter fixed term (1–2 years) keeps your options open while still covering the immediate rate cycle.

Choose variable if you're: carrying a decent cash buffer you'd like to sit in offset; planning to make extra repayments; expecting a lump sum; possibly selling or refinancing within a couple of years; or comfortable absorbing a few hundred dollars a month of movement.

Choose a split if you're: genuinely torn, carrying a large loan where a rate move is material, or you want offset access on part of your balance without exposing all of it to rate rises. Most borrowers who split go somewhere between 50/50 and 70/30 variable.

One more option people forget: don't fix — refinance. If your current rate is well above the sharpest offers, switching lenders can beat any fixed-versus-variable decision outright. Our guide to how much refinancing can save you walks through the costs of switching and what a new lender will assess.

Frequently asked questions

Q: Is fixed or variable better in Australia in 2026?

A: Variable suits most Australian borrowers in 2026, which is why only around 4% of new loans written through AFG in May 2026 were fixed. Variable keeps your offset account, unlimited extra repayments and the freedom to refinance without a break cost — and at current pricing, the sharpest fixed and variable rates are within about 0.10% of each other. Fixed is the better choice if a rate rise would genuinely strain your budget: you're paying a small premium to remove one unknown. If you can't decide, a split loan gives you roughly half of each. Run your own numbers through a mortgage comparison calculator before deciding — the result is an indication only, and your broker confirms the final figures.

Q: Should I fix my home loan before the next RBA meeting?

A: Only if you'd fix regardless of the next meeting. The RBA lifted the cash rate three times in 2026 to 4.35%, and lenders price expected moves into fixed rates well before the announcement — by the time a hike is widely expected, it's already in the fixed rate you're being offered. You're not going to beat the market by a week. The better question is whether your budget could absorb another 1–2% over the next few years. If the honest answer is no, fix now and stop watching the cash rate. If yes, stay variable and put the difference into an offset account.

Q: How much are fixed rate break costs in Australia?

A: There's no standard amount — break costs are calculated individually from your remaining balance, the time left on your fixed term, and how far wholesale rates have moved since you fixed. As a rough illustration, a $400,000 balance with two years left and a 1% adverse rate movement lands in the order of $8,000. Importantly, break costs are largest when rates have fallen since you fixed; in a rising market like 2026 they're often small and can be close to zero. Under the National Credit Code a break cost must be a reasonable estimate of the lender's actual loss, not a penalty. Always ask your lender for a written figure before you act — it changes daily.

Q: What are the pros and cons of a split home loan?

A: The main advantage of a split home loan is proportional protection: fix half of a $600,000 loan and a 2% rate rise costs you about $403 extra a month instead of $805, while you keep an offset account and unlimited extra repayments on the variable half. The drawbacks are that you're guaranteed to be half wrong whichever way rates move, you manage two sub-accounts and possibly two sets of fees, and you still have a fixed-term expiry to diarise. Splits work best on larger loans where a rate move is material in dollars. Below about a 20% share on either side, the admin outweighs the benefit.

Q: Can I make extra repayments on a fixed rate home loan?

A: Usually yes, but only up to an annual cap — commonly a few thousand dollars a year, depending on the lender. Go over the cap and you may trigger a fee or a break cost calculation. That's a meaningful restriction: adding $500 a month to a $600,000 loan at 6.00% clears it around eight years early and saves roughly $212,000 in interest, and most fixed products won't let you do it. If extra repayments are part of your plan, either stay variable or fix only the portion of the loan you know you won't pay down early.

Q: Do fixed rate home loans have offset accounts?

A: Most don't, or they only offset a portion of the balance — a full 100% offset is standard on variable loans and rare on fixed ones. That matters more than borrowers expect. Leadkit's home loan repayment calculator models a typical $25,000 average offset balance, which at 6.00% p.a. saves about $125 a month, or $1,500 a year, in interest you'd otherwise pay. If you keep a genuine cash buffer, price that saving into the comparison before you fix — it often outweighs the rate difference entirely.

Q: What happens when my fixed rate expires?

A: Your loan automatically rolls onto your lender's variable revert rate, which is frequently higher than what the same lender offers new customers. Nobody will ring to warn you. Diarise the expiry date the day you fix, then start shopping about six to eight weeks out — you can refix, move to variable, or refinance to another lender entirely, and once the fixed term has ended there's no break cost stopping you. Rolling onto the revert rate by default is one of the most expensive passive decisions in Australian home lending.

Q: Does fixing my rate affect how much I can borrow?

A: No. APRA requires lenders to assess every application at your actual rate plus a 3 percentage point serviceability buffer, and that buffer applies to fixed and variable loans alike — it was reaffirmed at 3% in May 2026. On a $600,000 loan, that means being tested at 9.00% rather than 6.00%: a repayment of about $4,828 instead of $3,597. The buffer generally reduces borrowing capacity by roughly 15–20%. You can see how it plays out against your own income with the borrowing power calculator.

The bottom line on fixed vs variable home loans

The fixed vs variable home loan decision isn't a forecast — it's a budget question. Ask yourself what a 2% rise would do to your household, and whether you'll genuinely use an offset account and extra repayments. Those two answers settle it more reliably than any rate prediction.

For most Australian borrowers in 2026, that points to variable, or to a split if the loan is large enough for rate movement to matter in real dollars. For borrowers already stretched, fixing a portion and sleeping properly is a perfectly rational trade.

Whatever you choose, do two things first: get a written rate offer from a broker or lender, and model your own loan under a rate rise instead of the one on a comparison page.

Want to see the numbers on your own loan? Use the free home loan comparison calculator — it takes about 30 seconds, no sign-up required. Results are a price indication only; your broker or lender confirms the final figures after reviewing your circumstances.