RBA hikes cash rate again: Borrowers facing $500 a month home loan hit

The Reserve Bank of Australia (RBA) has raised the cash rate by 50 basis points to 1.85%, with a strong likelihood that most banks and other home loan providers will pass the rate hike on in full to their customers.
At its monthly meeting today, the RBA board opted to increase the official cash rate for the fourth time in as many months. Cash rate hikes have become the new normal in Australia, with the board of the central bank attempting to offset rising inflation in the economy.
This latest hike means that the average borrower with a $500,000 home loan could soon end up paying around an extra $500 per month, relative to where their repayments were sitting at earlier this year, assuming their lender has passed on each of the rate increases announced by the RBA since May.
How could the August cash rate hike affect your mortgage?
Canstar finance expert Steve Mickenbecker says banks and other lenders have been “willingly been doing the Reserve Bank’s bidding” since the initial cash rate hike in May, with the majority passing on cash rate hikes in full as interest rate increases for their home loan customers.
It is likely most home loan lenders will also pass on the August cash rate hike in full, so Canstar has crunched the numbers to find out how much today’s rate rise could affect a hypothetical borrower’s monthly home loan repayments.
Note that the below calculations are based on a hypothetical borrower with the average owner-occupier variable interest rate on our database before the May cash rate hike, with a range of home loan sizes. The estimates below factor in potential increases in minimum monthly loan repayments, based on a lender passing on all four cash rate hikes in full and making no other rate changes.
How could a rate rise affect a $500,000 home loan?
- 0.50 percentage point rate rise: $148 more in monthly repayments.
How could a rate rise affect a $750,000 home loan?
- 0.50 percentage point rate rise: $222 more in monthly repayments.
How could a rate rise affect a $1,000,000 home loan?
- 0.50 percentage point rate rise: $296 more in monthly repayments.
Source: www.canstar.com.au – 01/08/2022. Monthly repayment calculations based on a loan repaid using principal & interest repayments over a total loan term of 30 years at a loan-to-value ratio (LVR) of 80%. Repayment calculations assume a starting interest rate of 4.23% (the average owner-occupier variable rate on Canstar’s database before the May cash rate decision of 2.98% with the May, June and July cash rate increases applied in full). Repayments rounded to the nearest whole dollar.
The average home loan could be $500 a month more expensive than in April
April of this year was the last time that the RBA held the cash rate at its record low point of 0.10%, where it had been sitting since November 2020, as part of the central bank’s efforts to combat the economic effects of the pandemic. With four cash rate hikes since then, and most major banks and lenders passing them on in full, we were curious about just how much more expensive the average Aussie home loan has become since the rate rises kicked in.
Canstar research crunched the numbers and found that, factoring in today’s 50 basis point cash rate hike, assuming banks and lenders pass it on in full, the average $500,000 variable rate home loan is likely to cost $499 a month more compared to what it would have cost in April, when the cash rate was still at its lowest point.
The average $750,000 variable rate home loan could cost $749 more per month relative to what it did in April, while the average $1,000,000 variable rate home loan could cost up to $999 more per month. You may well be wondering why the RBA keeps pushing the cash rate higher and higher, and inflicting more pain on the hip pockets of Aussies who are already contending with soaring inflation and a cost of living crisis.
Source: www.canstar.com.au – 01/08/2022. Monthly repayment calculations based on a loan repaid using principal & interest repayments over a total loan term of 30 years at a loan-to-value ratio (LVR) of 80%. Repayment calculations interest rate based on a starting rate of 4.23% (the average owner-occupier variable rate on Canstar’s database before the May cash rate decision of 2.98% with the May, June and July cash rate increases applied in full). Repayments rounded to the nearest whole dollar.
Why does the RBA keep hiking the cash rate?
As stated in its charter, one of the RBA’s key roles is to maintain the stability of the Australian financial system. Part of this involves setting the cash rate each month in line with economic conditions, which at the moment means attempting to combat rising inflation.
Inflation means an increase in the cost of goods and services and the inflation rate is typically measured using the Consumer Price Index (CPI). Based on figures released last week, Australia’s annual inflation rate hit a 21-year high, driven by major increases in the cost of fuel and new dwellings, as well as grocery staples like vegetables, the price of which rose by 14.6% in the past twelve months.
The RBA has a target inflation rate of 2% to 3%, and increasing the cash rate is a way to achieve this, because doing so generally encourages lenders to increase the interest rates they charge to borrowers, including people who are paying off home loans.
More expensive home loan repayments can mean less money for the average consumer to spend in the retail sector, thereby theoretically cooling demand and leading to a decrease in inflation.
It is worth bearing in mind, though, that demand is only one factor that affects inflation. As Canstar finance expert Effie Zahos points out, current supply chain issues caused by COVID-19 and conflicts like the war in Ukraine have also pushed up the price of certain goods, and it’s quite likely we’ll see more pain on that front before any sort of relief.
How can you compare home loans?
If you’ve seen your home loan rate going up in recent months, you can take a look at the current home loan interest rates to see how yours measures up. If you’re thinking about refinancing, you can also compare home loans with Canstar to see if there’s a more suitable deal out there for you.
The comparison rate for all home loans and loans secured against real property are based on secured credit of $150,000 and a term of 25 years.
^WARNING: This comparison rate is true only for the examples given and may not include all fees and charges. Different terms, fees or other loan amounts might result in a different comparison rate.
Up to $4,000 when you take out a IMB home loan. Minimum loan amounts and LVR restrictions apply. Offer available until further notice. See provider website for full details. Exclusions, terms and conditions apply.
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Cover image source: Ground Picture/Shutterstock.com
This article was reviewed by our Sub Editor Tom Letts and Deputy Editor Sean Callery before it was updated, as part of our fact-checking process.

Alasdair Duncan is Canstar's Content Editor, specialising in home loans, property and lifestyle topics. He has written more than 500 articles for Canstar and his work is widely referenced by other publishers and media outlets, including Yahoo Finance, The New Daily, The Motley Fool and Sky News. He has featured as a guest author for property website homely.com.au.
In his more than 15 years working in the media, Alasdair has written for a broad range of publications. Before joining Canstar, he was a News Editor at Pedestrian.TV, part of Australia’s leading youth media group. His work has also appeared on ABC News, Junkee, Rolling Stone, Kotaku, the Sydney Star Observer and The Brag. He has a Bachelor of Laws (Honours) and a Bachelor of Arts with a major in Journalism from the University of Queensland.
When he is not writing about finance for Canstar, Alasdair can probably be found at the beach with his two dogs or listening to podcasts about pop music. You can follow Alasdair on LinkedIn.
The comparison rate for all home loans and loans secured against real property are based on secured credit of $150,000 and a term of 25 years.
^WARNING: This comparison rate is true only for the examples given and may not include all fees and charges. Different terms, fees or other loan amounts might result in a different comparison rate.
Up to $4,000 when you take out a IMB home loan. Minimum loan amounts and LVR restrictions apply. Offer available until further notice. See provider website for full details. Exclusions, terms and conditions apply.
Try our Home Loans comparison tool to instantly compare Canstar expert rated options.
The comparison rate for all home loans and loans secured against real property are based on secured credit of $150,000 and a term of 25 years.
^WARNING: This comparison rate is true only for the examples given and may not include all fees and charges. Different terms, fees or other loan amounts might result in a different comparison rate.