Fixed vs variable home loan in 2026: which suits a rising-rate market

The Reserve Bank of Australia held the cash rate at 4.35% through early 2026, but its forward guidance points to a possible further tightening if underlying inflation stays above the 2-3% target band. For borrowers with $500k to $900k home loans – the typical range for first-home buyers and upgraders in Sydney, Melbourne, and Brisbane – the fixed-versus-variable decision is more finely balanced than it was a year ago.

In this article we lay out the real numbers for 2026: where variable rates are now, what fixed rates are on offer, how the APRA 3% serviceability buffer and DTI 6x cap affect your choice, and how the updated First Home Buyer Guarantee (FHBG) impacts decision-making.

The 2026 rate landscape: RBA at 4.35% and variable rates near 5.69%

After holding the cash rate at 4.35% for nine consecutive meetings, the RBA Board’s May 2026 Statement noted that “monetary policy remains restrictive” and that a further increase “cannot be ruled out”. The market-implied path shows a 40% probability of a 25-basis-point hike by November 2026.

Meanwhile, the lowest advertised variable rates for owner-occupiers paying principal and interest hover around 5.69% (as at July 2026, based on a selection of non-major lenders). That’s roughly 135 basis points above the cash rate – a spread that has compressed as competition for high-quality borrowers intensifies.

· Lowest variable rate (LVR ≤80%): 5.69% p.a. (comparison rate 5.72%) · Median variable rate: 6.14% p.a. · Highest variable rate among big four: 6.49% p.a.

Fixed rates have been more volatile. Three-year fixed rates currently range from 5.99% to 6.49%, depending on the lender and whether you take a package with offset and redraw. One-year fixed rates are slightly higher, around 6.05% , reflecting market expectations of a near-term rate move.

What fixed rates are available in July 2026

Lenders price fixed-rate loans based on swap rates (the cost of locking in a future interest rate). As of July 2026, the 3-year swap rate is approximately 4.80%, leaving a healthy margin for lenders.

Typical fixed-rate offerings for an owner-occupier with a loan-to-value ratio of 80%:

· 1-year fixed: 6.05% (offset account often restricted) · 2-year fixed: 6.10% (with offset in some cases) · 3-year fixed: 5.99% to 6.19% (most competitive; may include free offset) · 4-year fixed: 6.25% to 6.45% · 5-year fixed: 6.35% to 6.50%

The consensus among economists is that fixed rates have likely bottomed for this cycle, because the cash rate is not expected to fall below 4.00% until at least mid-2027. That makes a three-year fix an insurance policy against further hikes – but it also means you pay a premium compared to the best variable rate today.

Comparing repayments on $500,000 and $900,000 loans

Let’s put numbers alongside the decision. We assume a 30-year principal-and-interest loan.

Scenario A: $500,000 loan

· Variable at 5.69%: monthly repayment $2,891 · Variable at 6.14% (median): monthly repayment $3,039 · 3-year fixed at 5.99%: monthly repayment $2,995 · 3-year fixed at 6.19%: monthly repayment $3,059

Difference between best variable and best 3-year fixed: $104 per month ($1,248 per year). Over three years that’s a total premium of $3,744 if you fix. But if variable rates rise by just 0.50% (to 6.19%), then the variable repayment jumps to $3,059 – the same as the fixed at 6.19%. Any further rise makes the variable more expensive.

Scenario B: $900,000 loan

· Variable at 5.69%: repayment $5,204 · Variable at 6.14%: repayment $5,470 · 3-year fixed at 5.99%: repayment $5,391 · 3-year fixed at 6.19%: repayment $5,506

Monthly difference between best variable and best fixed: $187 ($2,244 per year). Over three years that’s $6,732 in extra cost if you fix now and rates don’t move. However, if the RBA raises the cash rate by 50 basis points, the median variable rate could surpass 6.64%, pushing the variable repayment to about $5,730 – making the fixed option cheaper by $224 per month.

The break-even point, where the total cost of fixing equals the total cost of a variable that rises, depends on the timing and magnitude of rate increases.

Break-even analysis: when does fixed beat variable?

We define break-even as the point at which cumulative interest (and fees) over a three-year fixed term is equal between fixing at 6.19% and taking a variable starting at 5.69%, assuming the variable rate rises at some point.

Simple break-even scenario:

· Month 1-12: variable at 5.69%, fixed at 6.19% → variable saves $188 per month ($2,256 over first year) · Month 13-24: variable increases by 0.50% to 6.19% → monthly cost now equal · Month 25-36: variable increases further to 6.69% → variable costs $183 per month more than fixed ($2,196 over period)

Total difference: variable saves $2,256 in year one, then pays $2,196 extra in year three. Net: variable still ahead by $60 over three years, but that’s negligible. If the second increase comes earlier (say month 14) or is larger (0.75%), the fixed option quickly becomes cheaper.

Key takeaway: If you believe there is a greater than 50% chance of at least two RBA hikes of 25 basis points each within two years, fixing at current fixed rates is a reasonable hedge. If you expect rates to stay flat or fall, variable wins.

APRA serviceability buffer and DTI cap: how they affect your choice

From February 2026, APRA requires lenders to apply a 3% serviceability buffer to variable rates when assessing loan applications. For a fixed-rate loan, lenders typically use the higher of the fixed rate plus 3% or the variable assessment rate. That means fixing can actually increase your borrowing capacity if it lowers the assessment rate compared to the variable buffer.

Example: You want a $900,000 loan. Lender’s variable assessment rate (buffer) is 5.69% + 3.00% = 8.69%. For a 3-year fixed at 6.19%, the assessment rate is 6.19% + 3.00% = 9.19% – that’s higher, so fixing reduces borrowing capacity. However, if you fix at 5.99% , the assessment rate is 8.99% , still slightly higher than 8.69%. So for most borrowers, fixing currently lowers borrowing power by roughly $25,000 to $50,000 on a $900k loan.

Additionally, the DTI 6x cap (introduced by APRA in February 2026) limits the total debt-to-income ratio to 6 times gross income for new loans. If you are near that limit (e.g., household income $150k, maximum loan $900k), fixing at a higher rate does not affect DTI – but it does increase your repayment burden, which the lender must assess. If your DTI is already 6x, fixing at a higher rate might push your repayment-to-income ratio above the lender’s internal threshold, leading to a decline.

Practical rule: Borrowers with DTI near 6x should stick with variable to maximise borrowing capacity. Borrowers with comfortable DTI (below 4.5x) and strong savings can consider fixing as a rate-insurance policy.

First Home Buyer Guarantee (FHBG) updates from July 2026

Housing Australia’s First Home Buyer Guarantee (formerly FHLDS) has been updated from 1 July 2026. Key changes:

· No income cap: Previous $125k singles / $200k couples removed. · 5% minimum deposit retained. · Price caps increased:

• Sydney: $1.5M (up from $900k)
• Melbourne: $950k (up from $800k)
• Brisbane: $1.0M (up from $700k)
• Perth: $850k (up from $600k)

These higher caps mean more borrowers in the $500k-$900k loan range can use the scheme. However, the guarantee only applies to a variable-rate product – you cannot fix the loan under the FHBG program because the scheme requires a variable rate with an offset account (to allow extra repayments and early withdrawal without penalty). If you later wish to fix a portion of the loan, you would need to refinance out of the guarantee.

Implication: FHBs using the guarantee should choose a variable rate now, then consider fixing part of the loan after two to three years when they have enough equity to exit the guarantee. Alternatively, they can fix the loan above the guarantee amount (if they have a 20% deposit) but that defeats the purpose of using the scheme.

FAQ: Fixed vs variable in 2026

Q1: If I fix at 6.19% for 3 years and the RBA raises rates to 4.85%, what do I save? Assume variable starts at 5.69% and after 12 months rises to 6.19%, then after 24 months to 6.69%. Over 3 years, fixed pays $104,000 in interest on a $500k loan; variable pays $103,400 – a saving of $600 in favour of variable. However, if rates rise to 6.44% after the first increase (i.e., a 0.75% hike), then fixed saves roughly $2,100 over three years. The outcome is highly sensitive to the timing and magnitude of hikes.

Q2: Can I switch from fixed to variable before the term ends? Yes, but you will pay a break cost – typically the lender’s loss if market rates have fallen. In a rising rate environment, break costs are usually low or zero because the lender can re-lend the money at a higher rate. Always ask for a break cost quotation before switching.

Q3: Does the APRA 3% buffer apply to fixed-rate loans? Yes, but the buffer is added to the higher of the fixed rate or the variable assessment rate. Most lenders apply the buffer to the fixed rate, so the assessment rate is fixed rate + 3%. That can be higher than the variable assessment rate (variable + 3%), potentially reducing your borrowing capacity by up to $50,000 on a $900k loan.

Q4: Is it better to fix a portion of the loan (split loan)? A split loan (e.g., 50% fixed, 50% variable) can offer the best of both worlds – you get certainty on half the debt and flexibility on the other half. Monthly payments are the weighted average. Example: $500k split 50/50 with variable at 5.69% and fixed at 6.19% gives an effective rate of 5.94% and monthly repayment of $2,943, which is $52 more than all-variable but less than all-fixed.

Q5: Should first-home buyers under the FHBG fix? No – the scheme requires a variable rate product with offset. You can fix after you have built enough equity (typically 20%) to refinance out of the scheme, usually after 3-5 years. At that point, if fixed rates are attractive, you can switch.

Sources

1. Reserve Bank of Australia – Statement on Monetary Policy, May 2026. www.rba.gov.au
2. Australian Prudential Regulation Authority – Letter to ADIs on macroprudential policy, February 2026. www.apra.gov.au
3. Housing Australia – First Home Buyer Guarantee program updates, July 2026. www.housingaustralia.gov.au
4. Canstar – Variable and fixed rate home loan averages, July 2026. www.canstar.com.au
5. State Revenue Offices – Stamp duty and FHBG price caps for NSW, Vic, Qld, WA, 2026-27.

Compare your numbers with our free calculator

Every borrower’s situation is different. To see exactly how fixed vs variable plays out for your loan size and income, use our loan comparison calculator – it handles break-even analysis, DTI checks, and even split-loan scenarios.

Open the Loan Comparison Calculator

Or click below to launch our interactive widget that lets you compare current rates from selected lenders side-by-side.

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Further reading

• Loan features that matter in 2026: offset, redraw, portability
• Refinancing break-even calculator and timeline for 2026
• Cashback offers and refinance deals: who is offering what in 2026