Do yesterday's inflation numbers mean interest rates are set to rise?

The conventional wisdom was that rates were heading down… until yesterday.

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Yesterday, the S&P/ASX 200 Index (ASX: XJO) and most ASX 200 shares were rocked by the latest inflation figures out of the Australian economy, and consequential fears of another hike in interest rates.

As we covered at the time, these figures showed Australian inflation coming at a hot 3.6% for the 12 months to 30 April 2024, well above expectations of a 3.4% rise.

When excluding volatile items like fuel and travel, the number was even higher at 4.1%. That's well above the Reserve Bank of Australia (RBA)'s official 2-3% target band of where it wants to see inflation.

Thanks to these sobering numbers, ASX shares had a horrid day yesterday, tanking 1.3%. The market consensus over the past few months has arguably been that slowing inflation will eventually result in the RBA lowering interest rates from the current decade-high 4.35% sometime later this year, or perhaps in early 2025.

With inflation coming in hotter than expected, this conventional wisdom could now be in doubt. So it was no real surprise to see the share market react so negatively yesterday.

Remember, ASX shares are directly impacted by interest rates, given higher rates attract money away from the stock market into 'safer' investments like term deposits and government bonds.

Australian mortgage holders have already endured one of the steepest interest rate rises in history over the past two years or so. After all, interest rates were still at a record low of 0.1% as recently as April 2022.

So does yesterday's inflation figures really mean interest rates might actually rise again, rather than fall, as the markets were expecting?

Are interest rates going up following the latest inflation numbers?

Well, unfortunately for anyone with a mortgage or a large loan, one prominent Australian economist thinks that the chances of at least one interest rate hike in 2024 just got stronger.

Speaking to the Australian Financial Review (AFR) this week, Judo Bank economist Warren Hogan reckons the unexpectedly high numbers we've just got a look at could "tip" the RBA's hand when it comes to raising rates. Here's what he said:

These results will test the RBA's patience… Inflation is not falling back to target with signs that inflation's underlying 'pulse' might be picking up in 2024.

The RBA was very close to hiking the rate earlier this month. This number could tip them over to raising rates at their next meeting on 18 June.

As we covered earlier, the cash rate is currently still sitting at 4.35%. But Hogan argues that the RBA might need to set it as high as 5% before it can break the back of inflation.

Hogan stated that 5% would be "in line with other similar economies' interest rates… [Yesterday's] data and ongoing increases in employment suggest this is still the right view".

As with most economic projections, anticipating where inflation or interest rates might head to next is no easy task. Plenty of economists have been wrong on rates before (including the former head of the RBA). However, that probably won't be too reassuring for any mortgage holders today. Let's see what happens.

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