There are signs inflation pressures are easing. Oil prices are down almost 20 per cent on their peak in March. They've been falling consistently for a month.
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The average capital city unleaded price is down from A$2.11 per litre in early July to a more bearable $1.74.
The money market is pricing in much lower inflation than we presently have over the next one to four years, and consumers' inflation expectations (although still high at 6.3 per cent) eased off a bit between June and July.
So why did the Reserve Bank just hike its cash rate by an outsized 0.50 percentage points for the third consecutive month?
Partly because it knows what is to come.
Higher inflation in store
The 6.1 per cent inflation figure released last week was for the year leading to the quarter that ended in June. Since then, in July, we've been hit by massive electricity price increases, some as high as 19 per cent, and gas prices that have manufacturers screaming.
The monthly inflation gauge compiled by the Melbourne Institute (the Bureau of Statistics hasn't yet gone monthly) kicked up 2.1 per cent in July, the biggest monthly jump in two decades.
And there's something else.
The Reserve Bank's deepest fear might be that it can't contain inflation, and that its apparent success over three decades has owed a lot to luck.
Reserve banks blessed by luck
Inflation fell to low levels throughout the world at about the time it fell to low levels in Australia. From the mid 1990s, inflation fell to 2-3 per cent in the US, the UK, Canada and just about every other Western nation, as China deluged the world with low-priced goods and companies began offshoring.
It got to the point where almost as many prices were falling as rising.
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The US economic historian Adam Tooze says it's reasonable to ask whether we had inflation at all from the mid-1990s onwards.
The Bank for International Settlements defines inflation as a "largely synchronous increase in the prices of goods and services" - a situation where prices broadly climb together.
Little real inflation for 30 years
It needs to be largely synchronous to qualify as inflation because otherwise the amount a dollar can buy isn't clearly changing - any such effect is overwhelmed by changes in the mix of goods and services a dollar can buy.
It is only when prices start to move together, as they are now, that inflation gets normalised and becomes entrenched.
Twenty years ago, in June 2002, by my count 20 of the 87 types of items that made up the consumer price index fell in price. Ten years ago, 32 fell in price.
By economist Saul Eslake's count, this June only 15 of what are now 90 expenditure classes fell in price - what appears to be the lowest number in decades.
Suddenly, price rises are synchronised
It means the Reserve Bank is having to deal with broad-based inflation of a kind it hasn't faced since it began targeting inflation in the early 1990s.
Just about the only tool it has to do it - higher interest rates - makes people poorer.
Higher interest rates work in other ways as well.
- they increase the reward for saving, diverting some money from spending
- they make it harder to borrow, diverting more money from spending
- and they push up the exchange rate, making imported goods cheaper - or they would have, were other central banks not also pushing up their rates, meaning the Australian dollar is no higher than it was when the bank began pushing up rates in May.
But their chief effect is impoverishing variable mortgage holders, to the tune of hundreds of dollars a month.
The more variable mortgage rates go up (Tuesday's hike will push up the ANZ standard rate from 4.24 per cent to 4.74 per cent) the less mortgage holders have to spend on other things, and the less they will add to price pressure.
That's the idea. And it is disingenuous to pretend otherwise.
Mortgage buffers are scant protection
In a speech last month Reserve Bank deputy governor Michele Bullock said households in aggregate were "well positioned".
They had saved A$260 billion since the start of the pandemic, much of which had gone into redraw facilities and offset and deposit accounts.
Around half were almost two years ahead on mortgage payments, or more. They had "large buffers".
But, as University of Newcastle economist Bill Mitchell points out, by the bank's own logic, this just means it will have to squeeze them harder.
It wants Australians to spend less and, if they use their buffers to keep spending as they have, it will have to either give up, or push rates higher until they do.
Or maybe something will turn up. Or maybe it has.
Trying to tame spending by pushing up interest rates has been described as like trying to pull a brick with a rubber band. You mightn't know you've done enough until you've done too much and it's too late.
Governor Philip Lowe says he is navigating a "narrow path". He can't be certain he knows the way.
- Peter Martin is a visiting fellow at the Crawford School of Public Policy, Australian National University. This article was first published on the Conversation
