Big bank cashback trap costs Aussie home buyers nearly $40,000

If you’re planning to take out a mortgage with a big bank for the sake of their $2,000 cashback, it might be time to rethink your options. New research from Mozo has found Aussie home loan borrowers hopping onto the cashback bandwagon could be ripped off $37,294 over the life of their loan by not shopping around for a more competitive deal.*
Mozo’s findings reveal that even if you spent the entire $2,000 cashback on making monthly repayments, the savings would disappear in the first 18 months on a $300,000 loan and in just 6 months on a $1,000,000 loan.**
Among major banks including Westpac, St George, Commbank and NAB, a total of 7 of these cashbacks were offered to home loan customers.
RELATED ARTICLE: New way to borrow takes Australia by storm
Mozo Director Kirsty Lamont said while these cashback offers seem like a good catch short term, they end up imprisoning borrowers inside bad rates that you could be stuck with for decades.
“Home loans are a long term commitment and if you set and forget your loan after banking a cashback offer you could be trapping yourself with a poor interest rate and higher monthly repayments,” Lamont said.
“Don’t believe the hype when it comes to home loan cash back offers. Your best option is always to compare what’s on offer and go with the most competitive rate.”
The big banks vs online lenders: what’s the difference in their rates?
Mozo data shows that the big banks definitely aren’t your best bet if you’re looking for an affordable home loan. Online lenders have risen as true movers and shakers in the mortgage market, offering customers much lower interest rates and fees.
In terms of average numbers, the Big 4’s variable interest rate now sits at 4.10%^, having dropped 139 basis points from 5.44% since 1 January 2015. Meanwhile, over the same period, the average variable rate for online lenders has fallen further, going down 150 basis points from 4.96% to 3.46%.
“On average, the big four banks’ variable interest rates are still 64 basis points above the average of the online lenders. So if you’re looking to cut your repayments, online lenders offer you a ticket out of the big banks’ high interest rate cashback trap,” Lamont said.
Even when you place the big banks’ cheapest rates side-by-side with those of leading online lenders, there continues to be a 31 basis point difference between the two.
In fact, two thirds of lenders in Mozo’s comparison database now offer variable rates below 3.50%, which beat the big bank average. And the lowest rates in our database - drumroll, please - start from as low as 2.89% with Reduce Home Loans!
Thinking of buying a house soon? Head over to our comparison table to get started on finding a great home loan for you.
-
Promoted



Mozo experts choice awards won:
- Low Cost Home Loan - 2025
Unloan Variable Home Loan
- Owner occupier
- Principal & Interest
- 20% min deposit
- Redraw available
Go to site- Interest rate
-
5.19
%
p.a.
Variable
- Comparison rate
-
5.10
%
p.a.
- Initial monthly repayment
-
$2,742
- The first home loan with an automatic loyalty discount (conditions apply)
- No application or banking fees
- Built by CommBank
- interest rate
-
5.19% p.a. (5.10% p.a. comparison rate)
- Fixed loan revert rate
-
n/a
- Upfront fees
-
$0.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$0.00
- Package
-
-
- Maximum loan to value ratio
-
80.00%
- minimum borrowing amount
-
$10,000
- maximum borrowing amount
-
$10,000,000
- type of mortgage
-
Variable
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
yes - free
- Redraw facility
-
yes - free
- Minimum redraw amount
-
-
- Offset account
-
no
- Split account
-
no
- Other restrictions
-
-
- Other benefits
-
Rate automatically discounted by 0.01% p.a. every year up to a maximum discount of 0.30% p.a..
- Special Offers
-
-
Read reviews and learn more about Unloan home loans
Go to site
-

First Home Buyer Loan
- Owner occupier
- Principal & Interest
- 5% min deposit
- For first home buyers
- Offset available
- Redraw available
Go to site- Interest rate
-
4.99
%
p.a.
Variable
- Comparison rate
-
5.04
%
p.a.
- Initial monthly repayment
-
$2,681
- Competitive interest rate – 4.99% p.a. (comparison rate* 5.04% p.a.)
- Offset account to reduce interest and save on repayments
- No establishment or monthly fees, plus valuation fees waived up to $1,000 (limited time)
- interest rate
-
4.99% p.a. (5.04% p.a. comparison rate)
- Fixed loan revert rate
-
n/a
- Upfront fees
-
$0.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$300.00
- Package
-
-
- Maximum loan to value ratio
-
95.00%
- minimum borrowing amount
-
-
- maximum borrowing amount
-
$5,000,000
- type of mortgage
-
Variable
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
yes - free
- Redraw facility
-
yes - free
- Minimum redraw amount
-
$100.00
- Offset account
-
yes
- Split account
-
yes
- Other restrictions
-
First home buyers only. Legal, valuation and settlement fees at cost. New rate offer for new business only offer ends on 15th Dec 2025.
- Other benefits
-
-
- Special Offers
-
-
Read reviews and learn more about G&C Mutual Bank home loans
Go to site -

Fixed Rate Home Loan
- Fixed rate
- Owner occupier
- Principal & Interest
- 5% min deposit
Go to site- Interest rate
-
5.09
%
p.a.
Fixed 2 years
- Comparison rate
-
5.43
%
p.a.
- Initial monthly repayment
-
$2,712
- No ongoing annual fees
- Make up to $25,000 extra repayments during a fixed period, fee free (T&Cs apply)
- Lock in for up to 5 years.
- interest rate
-
1 year - 5.24% p.a. (5.48% p.a. comparison rate)
2 years - 5.09% p.a. (5.43% p.a. comparison rate)
3 years - 5.29% p.a. (5.46% p.a. comparison rate)
4 years - 5.69% p.a. (5.58% p.a. comparison rate)
5 years - 5.69% p.a. (5.60% p.a. comparison rate)
- Fixed loan revert rate
-
5.48% p.a.
- Upfront fees
-
$300.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$395.00
- Package
-
-
- Maximum loan to value ratio
-
95.00%
- minimum borrowing amount
-
$20,000
- maximum borrowing amount
-
$5,000,000
- type of mortgage
-
Fixed
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
yes - free up to $25,000 during fixed period
- Redraw facility
-
no
- Minimum redraw amount
-
-
- Offset account
-
no
- Split account
-
yes
- Other restrictions
-
Additional repayments allowed up to $25,000 during the fixed period.
- Other benefits
-
-
- Special Offers
-
-
Read reviews and learn more about BCU Bank home loans
Go to site -



Mozo experts choice awards won:
- Low Cost Home Loan - 2025
Unloan Variable Home Loan
- Owner occupier
- Principal & Interest
- 20% min deposit
- Redraw available
Go to site- Interest rate
-
5.19
%
p.a.
Variable
- Comparison rate
-
5.10
%
p.a.
- Initial monthly repayment
-
$2,742
- The first home loan with an automatic loyalty discount (conditions apply)
- No application or banking fees
- Built by CommBank
- interest rate
-
5.19% p.a. (5.10% p.a. comparison rate)
- Fixed loan revert rate
-
n/a
- Upfront fees
-
$0.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$0.00
- Package
-
-
- Maximum loan to value ratio
-
80.00%
- minimum borrowing amount
-
$10,000
- maximum borrowing amount
-
$10,000,000
- type of mortgage
-
Variable
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
yes - free
- Redraw facility
-
yes - free
- Minimum redraw amount
-
-
- Offset account
-
no
- Split account
-
no
- Other restrictions
-
-
- Other benefits
-
Rate automatically discounted by 0.01% p.a. every year up to a maximum discount of 0.30% p.a..
- Special Offers
-
-
Read reviews and learn more about Unloan home loans
Go to site -



Mozo experts choice awards won:
- Low Cost Home Loan - 2025
- Investor Home Loan - 2025
Discount Great Rate Home Loan
- Owner occupier
- Principal & Interest
- 20% min deposit
- Redraw available
- Cashback
Go to site- Interest rate
-
5.19
%
p.a.
Variable
- Comparison rate
-
5.20
%
p.a.
- Initial monthly repayment
-
$2,742
- Get up to $3,000 cashback when you apply online (T&Cs apply)
- No paperwork or payslips required (see site for details)
- Low variable rate
- interest rate
-
5.19% p.a. (5.20% p.a. comparison rate)
- Fixed loan revert rate
-
n/a
- Upfront fees
-
$180.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$300.00
- Package
-
-
- Maximum loan to value ratio
-
80.00%
- minimum borrowing amount
-
$150,000
- maximum borrowing amount
-
-
- type of mortgage
-
Variable
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
yes - free
- Redraw facility
-
yes - free
- Minimum redraw amount
-
$0.00
- Offset account
-
no
- Split account
-
yes
- Other restrictions
-
Legal fees charged at cost.
- Other benefits
-
-
- Special Offers
-
Apply online cashback offer $2,500 for new loans of $250,000-$499,999 or $3,000 cashback for $500,000 or more for purchases or refinancing, LVR <80%. Up to $2,500 cashback for refinancers or first home buyers for applications made with lenders. T&Cs apply
Read reviews and learn more about Greater Bank home loans
Go to site -



Mozo experts choice awards won:
- First Home Buyer Loan - 2025
Variable Home Loan 90
- Owner occupier
- Principal & Interest
- 10% min deposit
- Offset available
- Redraw available
Go to site- Interest rate
-
5.29
%
p.a.
Variable
- Comparison rate
-
5.33
%
p.a.
- Initial monthly repayment
-
$2,773
- No monthly or ongoing fees
- Option to add an offset for 0.10% p.a.
- interest rate
-
5.29% p.a. (5.33% p.a. comparison rate)
- Fixed loan revert rate
-
n/a
- Upfront fees
-
$530.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$0.00
- Package
-
-
- Maximum loan to value ratio
-
90.00%
- minimum borrowing amount
-
$50,000
- maximum borrowing amount
-
$2,000,000
- type of mortgage
-
Variable
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
yes - free
- Redraw facility
-
yes - free
- Minimum redraw amount
-
$0.00
- Offset account
-
yes
- Split account
-
yes
- Other restrictions
-
Offset sub-account available for additional +0.10%. $300 discharge fee and $250 discharge documentation fee applicable if loan doesnt go to full term.
- Other benefits
-
-
- Special Offers
-
-
Read reviews and learn more about loans.com.au home loans
Go to site -

Offset Home Loan
- Owner occupier
- Principal & Interest
- 40% min deposit
- Offset available
- Redraw available
Go to site- Interest rate
-
5.39
%
p.a.
Variable
- Comparison rate
-
5.42
%
p.a.
- Initial monthly repayment
-
$2,805
- No ongoing monthly loan maintenance fees to pay.
- Pre-approval valid for 3 months
- interest rate
-
5.39% p.a. (5.42% p.a. comparison rate)
- Fixed loan revert rate
-
n/a
- Upfront fees
-
$300.00
- Ongoing fees
-
$0.00
- Discharge Fee
-
$395.00
- Package
-
-
- Maximum loan to value ratio
-
60.00%
- minimum borrowing amount
-
$20,000
- maximum borrowing amount
-
$5,000,000
- type of mortgage
-
Variable
- Repayment types
-
Principal & Interest
- Availability
-
Owner Occupier
- Repayment options
-
Weekly, Fortnightly, Monthly
- Extra repayments
-
n/a
- Redraw facility
-
yes - free
- Minimum redraw amount
-
$0.00
- Offset account
-
yes
- Split account
-
-
- Other restrictions
-
-
- Other benefits
-
-
- Special Offers
-
-
Read reviews and learn more about BCU Bank home loans
Go to site
Your selected home loans
Get product update alerts
We’ll keep an eye on rates, fees, and product updates and send you an email as soon as we see a change. Notify me for changes on:
You're all set!
We’ll keep you in the loop and email you as soon as there are any product changes.
* Cost saving based on the difference between Big 4 and online lenders' average owner occupier, principal & interest, $300,000 home loan at 80% LVR over 30 years, minus a $2,000 cash back offer.
** Saving calculated by comparing the average variable rate of the big banks with the average variable rate of the online lenders as of 10 September 2019.
^ Average variable rate as of 16 September 2019.
* WARNING: This comparison rate applies only to the example or examples given. Different amounts and terms will result in different comparison rates. Costs such as redraw fees or early repayment fees, and cost savings such as fee waivers, are not included in the comparison rate but may influence the cost of the loan. The comparison rate displayed is for a secured loan with monthly principal and interest repayments for $150,000 over 25 years.
** Initial monthly repayment figures are estimates only, based on the advertised rate. You can change the loan amount and term in the input boxes at the top of this table. Rates, fees and charges and therefore the total cost of the loan may vary depending on your loan amount, loan term, and credit history. Actual repayments will depend on your individual circumstances and interest rate changes.
^See information about the Mozo Experts Choice Home Loan Awards
Mozo provides general product information. We don't consider your personal objectives, financial situation or needs and we aren't recommending any specific product to you. You should make your own decision after reading the PDS or offer documentation, or seeking independent advice.
While we pride ourselves on covering a wide range of products, we don't cover every product in the market. If you decide to apply for a product through our website, you will be dealing directly with the provider of that product and not with Mozo.






