Often, we hear the claim that government should manage the budget better, after all it is just like a hugely complex household budget.

The last election was full of the Liberals claiming to be better managers of money than Labour, despite the ample evidence to the contrary. Irrespective of who won a few weeks ago, we currently have a great big shit sandwich to deal with.

The basic difference between our households and the country is that as a household we look at the investments we make, from the new house to a cup of coffee down the road. Each is a simple and discretionary choice. When things are Ok and we have a bit extra, we have that coffee, and perhaps some avocado on toast for breakfast. When times are tough, we stay at home and have Nescafe and Wheat Bix. We judge what we spend by how much extra we have, and the return we get from making the investment. The more productive the investments we make the better in the long run we do, while suffering some squeeze in the short term to enable those productive investments to be made.

When we make a mistake and find ourselves unable to meet the debt repayments, nasty people with court orders come and take our stuff.

By contrast the government is making huge investments, increasingly as a proportion of the total government expenditure, on items with a very uncertain return beyond the moral one, such as aged pensions. Many others have a very long and hard to calculate payback, such as education and health care. Others such as defence, are a bit like insurance. When they are needed you are glad you paid the price, but if not needed, the payments have just been a waste.

When the government spends more than it collects by way of taxes and direct charges over the course of the economic cycle, nobody comes to take the furniture. In effect, the government just ‘creates’ more money by crediting the Reserve Bank account, which then enables the Reserve to release the funds publicly via the financial institutions. Commonly this is called ‘printing money’ or more confusingly, ‘quantitative easing’. The downside is that we then risk the corrosive impact of inflation that over time reduces the value of what we owe, while increasing the short-term costs of borrowing more, which is where we are right now.

The key is the ‘productivity’ of what is spent. Money circulating in the economy has a multiplier effect, the extent of which depends on whether the money is spent on consumption, or is reinvested in some way. The multiplier varies from very low, 1:1.5 or so, to 1:10, or 15 and up. We are spending way too big a proportion of the national tax revenue on items at the low end of the multiplier scale at the expense of investments at the higher end.

In addition of course, are the investments made in assets that are used by enterprises that make no profit to be taxed. No positive multiplier applies here, it is a negative number, dragging down the total productivity of the economy. Profits by multinational resources and technology companies spring to mind. It is like someone breaking into your house and stealing your wallet. You have worked for the contents of said wallet, but get no benefit from it. The robber sticks your money in an envelope and mails it (via the internet these days) to their friend in the tax-free zone of the Bahamas, Delaware, London, or some other exotic no tax on ‘foreign earnings’ regime to be spent on luxury homes, yachts, soccer teams, and more investments in the tax free cycle that depletes the productivity of their host economies.

That is why your household budget is different from the national one. Once burgled in our homes we tend to put up barriers to it happening again. Bars on the windows, alarms, and a big dog with teeth. We take no such measures in the economy. Indeed, we encourage more investment upon which we guarantee not to demand any return by way of tax from the investors.

How stupid are we?