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# Two Rate Hikes and $2.30 Petrol: The Real Numbers for a $500,000 Mortgage
- URL: https://www.bushletter.com/household-budget-squeeze-rate-hikes-petrol-march-2026/
- Published: 2026-03-24T09:42:07.000Z
- Updated: 2026-03-24T09:47:36.000Z
- Description: Back-to-back RBA rate increases plus surging fuel costs have added hundreds to monthly household expenses. Here is what 3.3 million mortgage holders are actually paying.
- Author: Editor
- Tags: Wealth, News, #By Rosa Henriquez

By Rosa Henriquez · 2026-03-23 

Two consecutive interest rate rises from the Reserve Bank of Australia, combined with elevated petrol prices, have increased costs for the 3.3 million Australian households with a mortgage. The RBA has raised the official cash rate in both February and March, while fuel costs have increased by more than fifty cents per litre over the past six months.

TLDR

The RBA raised the cash rate to 4.10% in March, the second consecutive 25 basis point hike. A household with a $500,000 mortgage pays an additional $79 per month from the March increase. Combined with petrol at $2.30 per litre, the increased costs are affecting household budgets and consumer confidence, which has fallen to its lowest level since the start of the COVID-19 pandemic.

KEY TAKEAWAYS

01A $500,000 mortgage holder pays an extra $79 per month after the March rate hike, bringing the two-month increase to approximately $158

02A $600,000 mortgage now costs $180 more per month compared to January 2026

03Petrol at $2.30 per litre adds roughly $80 per month to the average household fuel bill compared to prices before the Iran conflict

04ANZ-Roy Morgan consumer confidence has fallen to its lowest point since the COVID outbreak in March 2020

05The big four banks expect another 25 basis point increase in May 2026

Approximately 3.3 million Australian households with a mortgage are facing higher costs, impacting household budgets.

## March Rate Hike Increases Mortgage Repayments

The Reserve Bank raised the cash rate to 4.10% on Tuesday, a 25 basis point increase that followed an identical rise in February. The board voted 5-4 in favour of the decision, indicating a division among members regarding the economic outlook.

For a household with a $500,000 mortgage on a standard variable rate, the March increase translates to an additional $79 per month in repayments. Combined with the February hike, the two-month total comes to approximately $158 in additional monthly payments.

For larger mortgages, the increase in absolute terms is greater. A $600,000 loan now costs $180 more per month than it did in January. A $750,000 mortgage adds $225.

> The cumulative increase from the February and March hikes on a $600,000 mortgage will be around $180 per month. That is $2,160 a year.

*— Sally Tindall, Canstar*

These figures assume immediate pass-through from lenders. ANZ, Commonwealth Bank, Westpac, and NAB all announced they would pass on the full rate increase within 24 hours of the RBA announcement.

## Rising Fuel Prices Add to Cost Pressures

Higher mortgage repayments coincide with a rise in fuel prices, which have increased since conflict in the Middle East began disrupting oil supplies. Petrol approached $2.30 per litre in late March, an increase of more than fifty cents since the disruption began.

According to analysis from AMP senior economist My Bui, the oil price increase adds an estimated $80 per month to the average household fuel bill.

Combining the mortgage and fuel increases, a household with a $500,000 loan faces approximately $240 more in monthly expenses compared to the start of 2026\. For a $600,000 mortgage, the combined increase is approximately $260 per month.

## Impact on Consumer Confidence and Spending

The ANZ-Roy Morgan Consumer Confidence Index dropped to its lowest reading since March 2020, when COVID-19 lockdowns began. The metric now sits lower than during the 2022-2023 rate hiking cycle.

Westpac analysis suggests underlying inflation reached 3.4% in the twelve months to January 2026, which is above the RBA's target band. Westpac projects headline inflation to reach 4.6% by June as the effects of higher fuel prices are registered in the economy.

## Economic Outlook and Rate Forecasts

Economists at the four major banks expect a third consecutive rate hike in May. They cite persistent services inflation and the pass-through of energy costs into CPI data as reasons for the forecast. If a further 25 basis point increase occurs, a $500,000 mortgage could cost approximately $237 more per month by June than it did at the start of the year.

HSBC economist Paul Bloxham stated that Australia may require a recession to bring inflation under control.

## Economic Context

The RBA targets an inflation rate of between 2% and 3%. Data shows underlying inflation at 3.4%. Petrol has risen more than fifty cents per litre in six months, and consumer confidence has fallen to its lowest level since March 2020\. Australia's four largest banks forecast another rate hike in May.

The next RBA board meeting is scheduled for May 6, 2026.

SOURCES & CITATIONS

1. [Reserve Bank of Australia, March 2026 Monetary Policy Decision](https://rba.gov.au/monetary-policy/?ref=bushletter.com)
2. [Canstar analysis of mortgage rate impact, March 2026](https://canstar.com.au/?ref=bushletter.com)
3. [AMP economic analysis, My Bui commentary on fuel costs](https://amp.com.au/insights?ref=bushletter.com)
4. [Westpac inflation forecast, March 2026](https://westpac.com.au/economics?ref=bushletter.com)
5. [ANZ-Roy Morgan Consumer Confidence Index, March 2026](https://roymorgan.com/?ref=bushletter.com)

FREQUENTLY ASKED QUESTIONS

How much have repayments increased on a $500,000 mortgage after the March 2026 rate hike? 

Approximately $79 more per month from the March hike alone. Combined with the February increase, the two-month total is roughly $158 more per month.

Will there be another interest rate rise in 2026? 

The big four banks expect another 25 basis point increase in May 2026\. This would bring the cash rate to 4.35%.

How much has petrol increased due to the Iran conflict? 

Petrol has risen by more than 50 cents per litre since the conflict began, with prices approaching $2.30 per litre in late March 2026.

What options are available for mortgage holders experiencing repayment difficulties? 

Options include contacting the lender to discuss hardship provisions, such as temporary interest-only payments or loan term extensions. Refinancing may also be an option for mortgage holders with equity, with potential annual savings of $3,000-$6,000 due to rate differences between lenders.