It’s time we had a serious talk about interest rates. And, while we’re at it, inflation. Someone in my job knows it’s time to talk turkey when the man in charge of rates, Reserve Bank governor Dr Philip Lowe, decides to go on the ABC’s 7.30 program to talk about both.
There’s much to talk about. Why are interest rates of such interest to so many (sorry)? Why do some people hate them going up and some love it? How do interest rates and the inflation rate fit together? Why do central banks such as our Reserve keep moving them up and down? When rates go up, they normally come back down – so why won't that happen this time?
Starting with the basics, interest is the price or fee that someone who wants to borrow money for a period has to pay to someone who has money they’re prepared to lend – for a fee.
Legally, the “person” you’ve borrowed from is usually a bank, while the person with savings to lend deposits them with a bank. But economists see banks as just “intermediaries” that bring borrowers on one side together with ordinary savers on the other.
The bank charges borrowers a higher interest rate than it pays its depositors. The difference reflects the bank’s reward for bringing the two sides together, but also the risk the bank is running that the borrower won’t repay the debt, leaving the bank liable to repay the depositor.
You see from this that interest is an expense to borrowers, but income to savers. This is why there’s so much arguing over interest rates. Borrowers hate to see them rise, but savers hate to see them fall. (The media conceal this two-sided relationship by almost always treating rate rises as bad.)
Now we get to inflation. Economists think of interest rates as having two components. The first is the compensation that the borrower must pay the saver for the loss in the purchasing power of their money while it’s in the borrower’s hands. The second part is the “real” or after-inflation interest rate that the borrower must pay the saver for giving up the use of their own money for a period.
This implies that the level of interest rates should roughly rise and fall in line with the ups and downs in the rate of inflation – the annual rate at which the prices consumers pay for goods and services (but not for assets such as shares or houses) are rising.
This explains why, when the inflation rate was way above 5 per cent throughout the 1970s and ’80s, interest rates were far higher than they’ve been since.
Now it gets tricky. Central banks have the ability to control variable interest rates by manipulating what’s known confusingly as the “overnight cash rate”. This “official” interest rate forms the base for all the other (higher) interest rates we pay or receive.
The Reserve Bank uses its control over this base interest rate to smooth the ups and downs in the economy, trying to keep both inflation and unemployment low.
When it thinks our demand for goods and services is too weak and is worsening unemployment, it cuts interest rates to encourage borrowing and spending. When it thinks our demand is too strong and is worsening inflation, it raises interest rates to discourage borrowing and spending.
The pandemic and the consequent “coronacession” caused the Reserve (and all the other rich-country central banks) to cut the official interest rate almost to zero.
The economy has bounced back from the lockdowns and is now growing strongly, with very low unemployment and many vacant jobs. But now we’ve been hit by big price rises from overseas, the result of supply bottlenecks caused by the pandemic and a leap in oil and gas prices caused by the war on Ukraine, plus the effect of climate change on local meat and vegetable prices.
As Lowe explained to Leigh Sales on 7.30, these are once-only price rises and, although he expects the inflation rate to reach 7 per cent by the end of this year, it should then start falling back toward the Reserve’s target inflation rate of 2 to 3 per cent.
His worry is that the economy’s capacity to produce all the goods and services being demanded is close to running out – and already has in housing and construction. This raises the risk that the rate of growth in prices won’t fall back as soon as it should.
This is why Lowe’s started raising the official interest rate from its pandemic “emergency setting” near zero – zero! – to a “more normal setting”. Such as? To more like 2.5 per cent, he told Sales.
Why 2.5 per cent? Because that’s the mid-point of his inflation target.
Get it? Interest rates are supposed to cover expected inflation plus a bit more. Once Lowe’s able to get them back up to that level without causing a recession, they won’t be coming back down until the next pandemic-sized emergency.
A base interest rate of zero was never going to be the new normal. The nation’s saving grandparents would never cop it.
