If you’re thinking that cutting interest rates by a mere 0.25 per cent isn’t likely to make much difference, you’re right. That’s why we can be sure there’ll be at least one more cut. Loading While it’s true that, with the official interest rate now at a new record low of 1.25 per cent, the Reserve has limited scope for further cuts, don’t expect it to follow the advice from some chief executives that it should refrain from responding to further evidence of weakness in the economy with further cuts so that, once the economy’s reached the point of being really, really weak, the Reserve will still have something left to use to give it life support. Let’s hope these executives are better at running their own businesses than they are at offering the econocrats helpful hints on how they should be doing their job. No, we can be confident that, until it believes the economy is picking up, the Reserve will keep doing the only thing it can to help – cutting rates further.

Should this mean the official rate gets to zero, Scott Morrison and his government will then have no choice but finally to respond to governor Dr Philip Lowe’s repeated requests – repeated again only two weeks ago – that they put less emphasis on returning the budget to surplus and more on helping to keep the economy growing, by spending more on needed (note that word) infrastructure and doing it soon, not sometime in the next decade. Morrison got himself re-elected by claiming to be much better at running the economy than his political opponents. In the next three years we’ll all see just how good he is. Boasting about budget surpluses while unemployment rises is unlikely to impress. Illustration: Simon Letch Credit: But back to the efficacy of interest rate cuts. Even if we get several more of them, the economy’s circumstances are such that this wouldn’t offer it a huge stimulus. One part of this is that while interest rates are an expense to borrowers, they are income to lenders, so that a rate cut reduces the spending power of the retired and others. This is always true, but it’s equally true that borrowers outnumber lenders, so the net effect of a rate cut is to increase spending.

In principle, the mortgage payments of households with home loans will now be a little lower, leaving them with more to spend on other things. In practice, many people leave their payments unchanged so they’re repaying the mortgage a little faster. Loading In principle, lower mortgage rates allow people to borrow more. And moving houses almost always involves increased spending on consumer durables - new lounge suites and the like. In practice, Australian households are already so heavily indebted that few are likely to be tempted to borrow more. In principle, lower interest rates should also encourage businesses to borrow more to expand their businesses. In practice, what’s constraining businesses from borrowing more is poor trading prospects, not the (already-low) cost of borrowing. In principle, lower rates are good news for the property market. But the Reserve wouldn’t be cutting rates if it thought the property boom might take off again. Combined with the removal of Labor’s threat to negative gearing, the likely result is a slower rate of fall in house prices, or maybe a floor for them to bump along for a few years. The home building industry won’t return to growth for some years yet.

The rate cuts should, however, cause our dollar to be lower, which may not please people planning overseas holidays, but will give a boost to our export and import-competing industries. Putting it all together, even if we get a few more rate cuts that isn’t likely to give the economy a huge boost. Which means it’s unlikely to do much to fix the underlying source of the economy’s weakness: very small increases in wages. Illustration: Andrew Dyson Credit: The Fair Work Commission’s decision to raise all award minimum wage rates by 3 per cent will help about 2.2 million workers, but few of the remaining 10.6 million are likely to do as well. Morrison’s promised $1080 boost to tax refund cheques, coming sometime after taxpayers have submitted their annual returns from the end of this month, will provide a temporary fillip, but it's a poor substitute for stronger growth and the improved productivity it helps to bring.