Every institution – even, as we’ve learnt to our sorrow, the Christian church – is tempted to put its own interests ahead of its duty to the greater good. Now it’s time for the Reserve Bank to examine its own conscience. If it cuts interest rates again in a fortnight’s time , in whose interests will it be acting?

Reserve Bank governor Philip Lowe will be contemplating cutting interest rates further. Louie Douvis

Many of the Reserve’s immediate customers in the financial markets expect it to cut the official interest rate at its meeting early next month and then again a few months later, at which point the rate will be down to its "effective lower bound" – 0.25 per cent – and it will be time for it to move to using purchases of government bonds to lower the risk-free rate of interest more widely in a program of "quantitative easing".

That’s what its market customers expect of it and it will be tempted to comply, showing it’s still at the wheel, in charge of steering the economy, doing all it can to get things moving and keeping itself at the centre of the macro-economic action.

What could be wrong with that? Just that it’s unlikely to do any good, and could do more harm than good. It’s hard to see that yet another tiny interest-rate cut will do anything of consequence to stimulate spending.

Rates are already so exceptionally low it’s clear that it’s not the cost of capital that’s making businesses reluctant to invest in expanding their production capacity. Whatever their reasons for hesitating, cutting rates further won’t change anything.

The Reserve Bank has been urged to avoid cutting interest rates following the nation's bushfire crisis.

Moving to households, the record level of household debt does much to discourage them from borrowing to buy goods and services and so boost economic activity. Interest-rate movements mainly affect discretionary spending on household durables (cars, white goods, lounge suites etc), but sales of these are in the doldrums despite already super-low rates. So, again, another cut is unlikely to change that.

In justifying recent rate cuts, the Reserve has relied heavily on the expected consequent fall in our exchange rate, which should stimulate the economy by making our export and import-competing industries more price competitive internationally.

And the reverse is also true: if we leave our rates well above the low levels of the big advanced economies, the dollar will appreciate and make our industries less price competitive. However, that argument’s of little relevance by now, and we shouldn’t be encouraging a beggar-thy-neighbour game of competitive devaluations.

But even if further rate cuts, and quantitative easing after that, will do little to boost demand, surely they couldn’t do any harm? Don’t be too sure of that. They’d hurt those who rely on interest income from financial investments – though bank interest rates could hardly fall any further.

Speaking of banks, the closer interest rates get to the floorboards, the more their profits are squeezed. If you don’t see that as a worry, you should: when lending becomes unprofitable banks become reluctant to lend. Sound good to you?

"Since the cuts began and prudential supervision was relaxed, house prices in Melbourne and Sydney have resumed their upward climb."

There may also be some truth in the argument that whereas in normal times news of an interest-rate cut boosts the confidence of consumers and businesses, at times like this they’re a sign the economy isn’t travelling well and new commitments should be delayed.

But here’s the biggest reason further rate cuts would do more harm than good: the clear evidence that, since the cuts began and prudential supervision was relaxed, house prices in Melbourne and Sydney have resumed their upward climb.

This is an appalling development. Getting our households even more heavily indebted is a cheap price to pay for scraping the last bit of monetary stimulus off the bottom of the barrel? Making first-home ownership even more unaffordable for our young people is just something we have to live with?

The one thing we know is that while "monetary policy" has lost its ability to stimulate demand for goods and services, its ability to stimulate demand for assets - such as houses, commercial property and shares - most of it fuelled by rising debt, continues unabated.

When in the 1970s we switched from using the budget to using interest rates to manage demand, we little realised that the serious side-effect of monetary stimulus was rising asset prices and rising debt.

Essentially, Australians buy and sell our houses among ourselves, bidding up the price of that little-changing stock of houses. Then we tell ourselves we’re all getting richer. Why is this anything other than damaging self-delusion? Why should the Reserve Bank be one of its chief promoters?

It’s time for Reserve governor Dr Philip Lowe to stop doing more harm than good and turn the management of demand back to the people we elected to run the economy.

Ross Gittins is the Herald’s economics editor.