Refinance volumes in Australia have been running at the highest level since 2023, driven by the unusually wide gap between front-book and back-book home loan rates. The Reserve Bank June 2026 hold confirmed the cash rate is unlikely to move materially through H2, which means the refinance window is open and the maths is favourable for most variable-rate borrowers who have not had a rate review in 18+ months.
This guide walks through when refinancing makes sense, the APG 223 streamlined carve-out that materially eases the credit assessment for like-for-like refinance, the typical switching costs and how cashback offers offset them, and seven practical moves to maximise the saving.
When refinancing makes sense
The fundamental refinance test is straightforward: the annual rate saving on the new loan needs to exceed the annualised switching cost over a reasonable time horizon. For most borrowers, the break-even calculation looks like:
- Current rate: 6.30 per cent (typical back-book Big 4)
- New rate: 5.85 per cent (typical front-book non-bank)
- Rate saving: 45 basis points
- Loan size: $700,000
- Annual interest saving: $3,150
- Switching costs (net of cashback): $500-1,000 typical
- Break-even: 2-4 months
At those parameters, the refinance pays back almost immediately and saves $3,150 a year over the remaining loan term. For a 25-year remaining loan, that is $78,750 of total interest saving.
The current 2026 rate environment
As at early June 2026: Big 4 packaged variable for prime owner-occupier P&I sits 5.99-6.20 per cent. Sharper non-bank rates from Athena, ING, Macquarie, Tic:Toc sit 5.79-5.95 per cent for the same files. The front-book to back-book gap on existing customer rates is unusually wide; many borrowers who have not had a rate review in 18+ months are paying 6.40-6.70 per cent on the same loan size.
For these borrowers, the refinance saving is typically 60-90 basis points, which on a $700,000 loan is $4,200-6,300 per year. The break-even is immediate; the only question is which lender to refinance to.
The APG 223 streamlined refinance carve-out
APRA Prudential Practice Guide 223 includes a carve-out that allows lenders to use a reduced serviceability buffer (1 percentage point instead of the standard 3) when refinancing a like-for-like loan to a different lender. The conditions:
- Same loan size or smaller (no cash-out increase)
- Same loan type (owner-occupier to owner-occupier, investor to investor)
- Clean repayment history on the existing loan (no missed payments in the past 12 months)
- The lender must specifically opt in to the carve-out
This matters because at the standard 3 per cent buffer applied at the current 6 per cent rate environment, the assessment rate is around 9 per cent. Many existing borrowers would fail that test if assessed as a new application. The 1 per cent carve-out brings the assessment rate down to around 7 per cent, which most existing borrowers can service.
Major banks vary on opt-in. As at mid-2026, ANZ, Westpac, Macquarie, BOQ and several non-bank lenders consistently use the carve-out. CBA and NAB have opted in for some file types. A broker who runs refinance volume daily knows which lender will use the carve-out for the specific file.
Typical switching costs
The actual costs of refinancing in Australia in 2026:
- Discharge fee from current lender: $150-400
- Settlement/legal fees on new loan: $200-500 (often included in lender package)
- Valuation fee: typically $0 (waived as part of refinance offer)
- Title registration: $150 (government fee, varies by state)
- Mortgage registration: $150 (government fee, varies by state)
- Application/establishment fee on new loan: $0-700 (waived in most refinance packages)
Total typical cost: $650-1,450. Many lenders offer cashback rebates of $1,500-4,000 on refinance applications, which more than cover these costs.
The cashback offer reality
Refinance cashback offers are genuine and worth taking, but read the terms before deciding. The typical traps:
- Rate reset after 12 months. Some offers feature an attractive headline rate that resets higher after the introductory period.
- Package fees from year two. Some packaged products have annual fees that take effect from year two onwards.
- Maintenance conditions. Cashback may require maintaining specific products (transaction account, credit card) for a defined period.
- Cashback clawback. Some lenders claw back the cashback if you refinance away within a defined period (typically 2-3 years).
The cleanest cashback offers are those where the rate is genuinely competitive and the cashback is paid as a discharge of switching costs with no claw-back clause. Read the offer document, not the marketing.
Seven practical moves to maximise the saving
- Pull your current rate from your existing lender first. Their retention desk will often offer a discount to keep the loan; this is a competitive benchmark for what the market should offer.
- Quote across at least one Big 4, one digital major (Athena, ING, Macquarie), and one customer-owned bank. The gap is frequently 30-50 basis points and the cheapest option varies week to week.
- Use a broker for the multi-lender comparison. A single application lodged at the right lender beats lodging multiple applications across different lenders (which damages the credit file).
- Check eligibility for the APG 223 streamlined carve-out. If your file is borderline on serviceability at the standard 3 per cent buffer, the carve-out can be the difference between approval and decline.
- Time the application around the existing fixed term. If you are currently on a fixed rate, refinancing before the fixed term ends triggers break costs that can be material. Time the refinance to land at or after the fixed expiry.
- Read the cashback terms. The headline cashback is what you see; the conditions are where the value can erode.
- Negotiate the discharge fee. Existing lenders often waive or reduce the discharge fee when they realise they are losing the loan; ask before accepting the standard fee.
Frequently asked questions
When does refinancing a home loan make sense?
Refinancing makes sense when the rate saving on the new loan, net of switching costs, produces a positive break-even within a reasonable time frame (typically 12-24 months). With Big 4 packaged rates around 5.99-6.20 per cent and sharper non-bank rates from Athena, ING, Macquarie at 5.79-5.95 per cent, the gap is typically 20-40 basis points which on a $700,000 loan is $1,400-2,800 per year of saving.
How much does it cost to refinance in Australia?
Typical refinance costs include: discharge fee from current lender ($150-400), settlement/legal fees on the new loan ($200-500), valuation fee (often waived for refinance), title registration ($150 government fee), mortgage registration ($150 government fee). Total typical cost: $650-1,450. Many lenders offer cashback rebates of $1,500-4,000 that more than cover these costs.
What is the streamlined refinance carve-out?
Under APRA Prudential Practice Guide 223, lenders can use a reduced serviceability buffer (typically 1 percentage point instead of the standard 3) when refinancing a like-for-like loan to a different lender. The conditions: same loan size (no cash-out), same loan type (owner-occupier to owner-occupier), clean repayment history, and the lender must specifically opt in to the carve-out. This makes refinance practical for borrowers who would not pass the standard 3 per cent buffer for a new application.
Can I refinance if my home value has dropped?
Refinancing requires the lender to value the property; if the current value has dropped, the LVR position may be tighter than at original purchase. LVR above 80 per cent triggers LMI requirement. For Sydney and Melbourne borrowers who bought between mid-2024 and late 2025, the soft 2026 prices may mean refinance is harder than expected. The streamlined APG 223 carve-out can help in some cases.
Should I refinance to a non-bank lender?
For prime-credit borrowers with clean files, non-bank lenders (Athena, ING, Macquarie, Tic:Toc) frequently publish sharper rates than Big 4 packaged products. The trade-off is the absence of branch network and the regulatory status difference (non-banks are not ADIs). For most borrowers refinancing a standard owner-occupier P&I, non-bank options are worth comparing in the broker shortlist.
How long does refinancing take?
A complete refinance from application to settlement typically takes 3-6 weeks for a clean file at most lenders. Complex files (self-employed, multiple borrowers, non-standard property) take 6-10 weeks. The streamlined APG 223 carve-out can accelerate the credit assessment for eligible files.
Can I refinance more than once?
Yes, there is no limit on the number of times you can refinance. The practical limit is the break-even maths: if you refinance frequently, the switching costs accumulate and may exceed the rate savings. Most borrowers refinance every 3-5 years to capture material rate movements; more frequent refinancing is rarely cost-effective.
What is the cashback offer trap?
Several Australian lenders offer cashback rebates ($1,500-4,000) on refinance applications. These are genuine and worth taking, but watch for: rate that resets higher after 12 months, package fees that take effect from year 2, or specific eligibility conditions that need the borrower to maintain specific products. Read the offer terms before deciding.