The Truth About Cashback Refinance Offers: What to Watch For
22 May 2026
How Cashback Refinance Offers Work
Cashback refinance deals are promotions run by lenders to attract borrowers from competitors. The lender pays a cash amount — typically between $2,000 and $4,000, though some offers have reached $6,000 — directly to the borrower after settlement. The money lands in your bank account, no strings attached. It does not reduce your loan balance.
These offers have cycles. Lenders tend to increase cashback amounts when competition for refinancing volume is high, and pull them back when conditions ease. The RBA's rate movement cycle has historically influenced when cashback deals appear and how generous they get. Borrowers who watched the market between 2022 and 2024 saw cashback offers surge as lenders competed aggressively for refinancers.
The cashback is not the loan. The rate, fees, features, and lender behaviour are what determine the actual cost of the product you are moving to. A $4,000 cashback attached to a loan that costs you $3,000 more per year than your current lender is a net loss by year two.
How to Calculate Whether a Cashback Deal Saves You Money
Start with the rate differential. If refinancing moves you from 6.45% to 6.10% on a $600,000 loan, that 35-basis-point reduction saves approximately $2,100 per year in interest. A $3,000 cashback means you have recovered the equivalent of about 17 months of interest savings upfront, before accounting for any costs to switch.
Then subtract the costs: discharge fees from your current lender (typically $150–$400), any government mortgage discharge and registration fees (which vary by state but commonly run $350–$700 combined), and any establishment or application fees at the new lender. If the new loan carries a higher annual package fee than your current one, add the annual difference to your running cost calculation.
Cashback received: $3,000. Switching costs: $900 (discharge + registration + new lender fee).
Net cashback after costs: $2,100. Time to break even on rate savings alone: about 15 months.
After that, the rate saving compounds each year — as long as the new rate stays lower.
What Cashback Offers Often Don't Tell You
The headline cashback is designed to be noticed. The rate, the revert rate, and the clawback clause are in the fine print. Most cashback offers include a clawback period — commonly 24 months — during which the lender can recover some or all of the cashback if you refinance away again. If you accept $3,500 and then move to a better deal 14 months later, you may owe the lender part of that money back.
The revert rate matters too. Some cashback offers attach to introductory fixed rates or honeymoon variable rates that are below the lender's standard variable. Once the fixed term expires or the introductory period ends, the rate can jump significantly. At that point, a borrower who moved for the cashback is now sitting on a higher rate than they could get elsewhere, and the cashback has long been spent.
Lender service quality is also absent from cashback marketing. How quickly a lender processes repayments, whether their app and online banking work reliably, how easy it is to reach someone when something goes wrong — none of this appears in a cashback comparison but affects the day-to-day experience of holding that loan for years.
When Cashback Refinancing Can Make Sense
A cashback offer becomes genuinely useful when it stacks on top of a rate improvement that already justifies switching. If the new loan offers a lower rate, better features like a full offset account, and a cashback on top, the offer accelerates the financial benefit of a move that made sense independently.
Borrowers with larger loan balances benefit more from rate improvements in dollar terms, which means the cashback represents a smaller share of total benefit. A $2,500 cashback on a $800,000 loan where the rate saving is $4,000 per year is a meaningful bonus. The same $2,500 on a $200,000 loan where the rate saving is $600 per year is the headline, not the supporting act — and that framing should prompt more careful scrutiny.
The question worth asking before moving for a cashback is simple: if there were no cashback offer at all, would this loan still be worth switching to? If the answer is yes, the cashback is a genuine bonus. If the answer is no, the cashback is doing the job of masking a product that is not competitive enough to stand on its own.
The Tax Treatment of Cashback Payments
Cashback payments received on refinancing are generally treated as assessable income by the ATO for investment properties, since they are a financial benefit connected to a deductible loan. For owner-occupier loans, the treatment is less clear-cut and has been subject to varying interpretations. This is worth discussing with your accountant before assuming the full amount is tax-free — particularly for higher-income earners where the tax impact could be material.
Key Takeaways
- Cashback offers typically range from $2,000 to $4,000 and are paid to the borrower after settlement — they do not reduce your loan balance.
- Most offers include a clawback clause of 12–24 months. Refinancing again within that window may require you to repay some or all of the cashback.
- Calculate the full cost to switch — discharge fees, registration fees, and any new lender fees — before treating the cashback as a net gain.
- Watch the revert rate. Introductory or fixed rates attached to cashback deals can jump significantly once the promotional period ends.
- The strongest reason to refinance is a better rate and product fit. A cashback that stacks on top of that is a bonus — not a reason in itself.
- ATO treatment of cashback payments on investment loans may make them assessable income. Check with your accountant.
