Rates of tax tell us nothing about economic success

When Leigh Sales of 7.30 asked Scott Morrison what evidence he had to support his claim that the economy would be weaker under Labor because it would impose higher taxes, he replied “I think it’s just fundamental economics 101”. Sorry, don’t think so.

The belief that an increase in taxes must, of necessity, discourage work effort, saving and investing is regarded as a self-evident truth by the well-paid. Similarly with the converse: a decrease in taxes must, of necessity, encourage work effort, saving and investing.

But since no one particularly enjoys paying taxes – and some people really hate it – they would think that, wouldn’t they.

It’s a simple, all-purpose, no-need-to-explain argument against me being asked to pay more tax and in favour of me paying less. What’s not to like?

Just that it misrepresents what economics teaches.

It’s true that some economists emphasise the “deadweight loss” involved in imposing taxes. In principle, a tax distorts an individual’s choices, causing them to do things they otherwise wouldn’t.

This distortion of choices is said to be “economically inefficient”, in that it fails to produce the allocation of economic resources – land, labour and capital – that maximises the “utility” (satisfaction) the community derives.

The degree of allocative inefficiency differs for different taxes, with some said to involve greater deadweight loss than others.

By this logic, one of the worst taxes is conveyancing duty (which discourages people from moving house) and the best is a poll tax (everyone pays the same dollar amount each year which, being impossible to avoid, doesn’t change behaviour).

One thing often not mentioned in economics 101 is that tax on the unimproved value of land (such as council rates) and inheritance taxes score well.

But these calculations are based on theory and assumptions. The first of their limitations is that they ignore the benefits that flow when the taxes are spent. When they’re spent on government provision of “public goods” (goods or services that would be undersupplied if their provision was left to the private sector) they increase allocative efficiency.

You shouldn’t have to go beyond first year economics to learn that changes in the price of something have two effects: an “income effect” and a “substitution effect”.

People who believe an increase in income tax (which is a price) discourages work, and a cut in income tax encourages it, are focusing on the substitution effect and ignoring the income effect.

It’s true that a higher rate of income tax should discourage work by reducing the monetary benefit you get from it, relative to the benefit you get from not working. That is, from enjoying more “leisure”. It thus should encourage you to substitute leisure for work – that is, work less.

 By contrast, lowering the tax on work should encourage people to substitute work for leisure – work more.

Trouble is, the income effect works the opposite way. Increasing income tax reduces your after-tax income. If you don’t want your income to fall, you have to do more work, not less. Similarly, cutting income tax increases your after-tax income, encouraging you to work less.

The fact that the income effect and the substitution effect pull in opposite directions means economic theory can’t tell us whether or not tax increases discourage work. To answer that question you have seek out empirical evidence from the real world.

In doing so you’ll make up for theory’s implicit assumption that money is the only factor motivating people to work. If that’s what you think, you’ve got a lot to learn about human nature.

The empirical evidence says changes in the rate of income tax for “primary earners” – the main person a family relies on for income, who’s usually working full-time – aren’t great.

It’s only “secondary earners” - often women working part-time – whose hours of work are much influenced by increases or decreases in income tax.

This is pretty obvious when you think about it. The number of hours worked by full-time employees is set by their boss, whereas part-timers have some degree of control over the hours they work. Certainly, they decide whether they want to move from part-time to full-time.

Let me tell you: politicians’ motive for tax cuts is almost always more political than economic. If Morrison was really on about encouraging more work, his tax cuts would be aimed at working mothers, not the highly paid full-timers they are aimed at.

But there’s another empirical test of his confident assertion that high rates of tax discourage economic growth and low rates encourage it.

If that were true it should also be true that countries with high tax rates have low living standards, whereas countries with low tax rates have high living standards.

Try as they might, however, economists have never been able to find an inverse correlation between the level of taxes and a country’s rate of growth.

For a start, the poor countries have much lower rates of total taxation than the rich ones. Rich countries have high tax rates so they can enjoy the many benefits of being rich: the welfare state, good public infrastructure, good health care, good education and much else.

The Organisation for Economic Co-operation and Development regularly publishes figures for their 35 member-countries’ rates of total taxation (federal and state) as a percentage of gross domestic product.

Its latest figures, for 2017, show its rich-country members ranging from 46 per cent for France and Denmark to 23 per cent for Ireland. Sweden is on 44 per cent, Germany on 37.5 per cent.

The average for the whole OECD is 34 per cent, with us on about 28 per cent and the United States on 27 per cent (but with a much bigger budget deficit).

If they don’t tell you all that in economics 101, ask for your money back.

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Unhealthy, unhappy lives aren't fair exchange for higher incomes

In his Australia Day address, social researcher Hugh Mackay said that "the Australia I love today – this sleep-deprived, overweight, overmedicated, anxious, smartphone-addicted society – is a very different place from the Australia I used to love".

He identified three big changes: the gender revolution, increasing disparity in wealth, and social fragmentation.

He approves of the first, but laments that we’re "learning to live with a chasm of income inequality" and that social fragmentation means Australians are become "more individualistic, more materialistic, more competitive".

The third big change, he said, posed the biggest challenge – preserving social cohesion.

Earlier this month, the playwright David Williamson lamented that, since the advent of neoliberalism, "the world has become a nastier, more competitive, more ruthless place".

"There’s no perfect society, but I don’t think it needs to be as brutal as it is now."

As we move on from our officially required season of national navel-gazing – "yes, but what does it mean to be Australian?" – these concerns are worth pondering.

Economists object to being blamed for every ill that’s beset our country in the past 40 years. Where’s the proof that this economic policy or that has caused a worsening in mental health, they demand to be told.

It’s true that few developments in society have just a single cause. It’s also true there’s little hard evidence that the A of “microeconomic reform” caused the B of more suicides, for instance.

But there’s a lot of circumstantial evidence. After all, the specific objective of micro reform was to increase economic efficiency by making our markets more intensely competitive. The economists’ basic model views us as individuals, motivated by self-interest, and the goal of faster growth in the economy is aimed at raising our material standard of living.

And if some of our problems stem from changing technology – pursuing friendship via screens, for instance – can economists disclaim all responsibility when one of their stated aims is to encourage technological advance in the name of higher productivity?

Economists assume that economic growth will leave us all better off. Most take little interest in how evenly or unevenly the additional income is shared between households.

The Productivity Commission’s recent and frequently quoted report, finding that the distribution of income hasn’t become more unequal, refers to recent years, not the past 40. And the report averages away the uncomfortable truth that the incomes of chief executives and other members of the top 1 per cent have increased many times faster than for the rest of us.

Sometimes what’s happened since the mid-1980s reminds me of the old advertisement: are you smoking more, but enjoying it less?

Our real incomes have grown considerably over the years – even for people at the bottom – and economic reform can take a fair bit of the credit. It can take most of the credit for the remarkable truth that, unlike all the other rich countries, we’ve gone for 27 years without our least fortunate experiencing the great economic and social pain of recession and mass job loss.

But though most of us are earning and spending more than ever, there’s evidence we’re enjoying it less. Our higher material living standards have come at the cost of increasing social and health problems.

Is that so hard to believe when the key driver of our higher incomes is more intense competition between us?

Economists generally take little interest in social and health problems, regarding them as outside their field. But though problems such as loneliness, stress, anxiety, depression and obesity were with us long before the arrival of neoliberalism, they seem to have got worse since the mid-1980s.

Last year, Dr Michelle Lim, a clinical psychologist at Swinburne University, and her colleagues produced the Australian Loneliness Report, which found that more than one in four Australians feels lonely three or more days a week.

It’s most common among those who are single, separated or divorced. Compared to other Australians, the lonely report higher social anxiety and depression, poorer psychological health and quality of life, and fewer meaningful relationships and social interactions.

Turning to increased stress, it’s an inevitable consequence of living in bigger, faster cities and working in more competitive workplaces. Our bodies respond to stressful events with a surge of adrenaline, which increases our reaction speed and helps ensure our survival.

Trouble is, our bodies aren’t designed to cope with repeated stressful events and adrenaline rushes. Our readiness for fight or flight doesn’t decline, and we remain permanently aroused, which damages our health, making us more at risk of a heart attack or getting sick in other ways.

If more "jobs and growth" and the higher incomes they bring are intended to make us happier, maybe governments would do better by us if they switched their objective from increasing happiness to reducing unhappiness.

For instance, if the banks are now being criticised on all sides for putting profits before people, why are governments – facing an epidemic of obesity and diabetes - so respectful of the food and beverage industry’s right to continue fatten its profits by fattening us and our kids?

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Give economists a PC and they start making more sense

Economies turn down and back up, but one of the biggest, long-running economic stories of our time is the way the digital revolution is disrupting one industry after another. So let me tell you how it’s changing the academic study of economics.

You probably imagine the economic research carried out in universities is terribly theoretical and impractical. It used to be, but not anymore.

You can trace the progress of academic economics by looking at who’s been awarded the Nobel memorial prize in economic sciences from about 2001 onwards, and what they did to deserve it. Of course, there’s usually a long delay between when you make your seminal contribution and when you get your gong.

Until the turn of the century, the prize usually went to people elaborating on orthodox neo-classical theory, particularly by shifting to mathematical reasoning.

It may surprise you that the man who wrote the most popular introductory textbook of the post-war years, Paul Samuelson, was also the individual who did most to turn economic reasoning from words and diagrams to equations.

The development of the first mathematical “econometric” models of the macro economy was another important advance.

It was about 30 years ago that the frontier of economic research took a more realistic turn by shifting to the study of “imperfect competition”, where the idealised assumptions of the simple neo-classical model of markets were critically examined.

In 2001, for instance, the prize was shared by three American economists – George Akerlof, Michael Spence and Joseph Stiglitz – for their demonstration that, rather than being perfectly shared by everyone in a market, information is usually asymmetric – with sellers knowing more than buyers – and, rather than being costless, is expensive to acquire.

Another example: Paul Krugman got his gong in 2008 for demonstrating that there’s more to international trade than just each country pursuing its “comparative advantage”, as mainstream theory assumes.

It was about 40 years ago that the psychologist Daniel Kahneman (gonged in 2002) and the rebellious economist Richard Thaler (2017) began formulating behavioural economics, an advance on the neo-classical assumption that all decision-making is rational. Robert Shiller got his in 2013 for his study of non-rational behaviour in financial markets.

But recent studies of articles in the world’s top economic journals (mainly American) have shown that, since about the turn of the century, theoretical papers have largely been replaced by empirical studies of particular relationships in particular markets (competition between male and female drivers in Japanese speedboat races, for instance).

This shift from deducing conclusions from assumption-based theory to examining the relationships between real-world variables, to see how the theory measures up, is a big improvement. But why has it happened?

I give most credit to the information revolution. Computerisation has hugely increased that number of “data sets” of business information waiting to be discovered and subjected to statistical tests by academic economists checking hypotheses or just looking for interesting relationships.

All of which is easily done using programs on your personal computer, rather than waiting your turn for time on the main-frame. And it fits with economists’ modern addiction to using stats and maths for “academic rigour”.

As part of their greater interest in empirical evidence rather than what theory tells us should be the case, economists have started doing something they long believed was impossible: economic experiments – including searching out “natural experiments”, such as the famous study of two nearby cities in different US states, where one state raised the minimum wage and the other didn’t.

By the standards of real mathematicians, economists’ maths isn’t that fancy, but it’s more advanced than used by others in the social sciences. Economists have made more progress in moving from finding correlations to establishing causal relationships than the psychologists have – which probably means they get more research funding.

It also means there’s less resistance from international journals to publishing research about that uninteresting and unimportant place called Australia. I’m told doctoral students come to Oz because they’ve heard we have good data sets.

The risk, however, is that research projects are chosen because good data are available, rather than because the questions being answered are important to our understanding of how the economy works and to finding better solutions to our economic problems.

We don’t want academic economists losing interest in their theory, we want them using their empirical evidence to improve it. Making it more realistic and thus more reliable in its predictions about what happens if you do X, or whether policy A or policy B is more likely to improve things.

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You'd be surprised what's propping up our living standard

It’s the last lazy long weekend before the year really gets started, making it a good time to ponder a question that’s trickier than it seems: where has our wealth come from?

The question comes from a reader.

“Australia has been without a recession for 25 or more years, the economy seems booming to me, just by looking around: employment, housing prices, explosive building in major capitals, etc. Where is the wealth coming from? Mining? Other exports? Because the resources have to come from somewhere,” he writes.

That’s the first thing he’s got right: it’s not money that matters (the central bank can create as much of that stuff as it sees fit) it’s what money is used to buy: access to “real resources” – which economists summarise as land (including minerals and other raw materials), labour and (physical) capital.

But here’s the first surprise: of those three, when you trace it right back, probably the most important resource is labour – all the work we do.

The first complication, however, is the word “wealth”, which can mean different things. It’s best used to refer to the value of the community’s assets: its housing, other land and works of art, the equipment, structures and intellectual property owned by businesses (part of which is represented by capitalised value of shares on the stock exchange), plus publicly owned infrastructure (railways, roads, bridges and so forth) and structures.

To get net wealth you subtract any debts or other liabilities acquired in the process of amassing the wealth. In the case of a national economy, the debts we owe each other cancel out, leaving what we owe to foreigners. (According to our national balance sheet, as calculated by the Australian Bureau of Statistics, at June last year our assets totalled $15.4 trillion, less net liabilities to the rest of the world of $3.5 trillion.)

But often the word wealth is used to refer to our annual income, the total value of goods and services produced in the market during a year, as measured by gross domestic product (which in the year to June was $1.8 trillion).

The people in an economy generate income by applying their labour to land and physical capital, to produce myriad goods and services. Most of these they sell to each other, but some of which they sell to foreigners. Why? So they can buy other countries’ exports of goods and services.

Only about 20 per cent of our income comes from selling stuff to foreigners and only 20 per cent or so of the stuff we buy comes from foreigners. This exchange leaves us better off when we sell the stuff we’re better at producing than they are, and buy the stuff they’re better at than we are.

Much of what we sell to foreigners is minerals and energy we pull from the ground and food and fibres we grow in the ground. So it’s true that a fair bit of our wealth is explained by what economists call our “natural endowment”, though it’s also true that we’re much more skilled at doing the mining and farming than most other countries are.

Speaking of skills, the more skilled our workers are – the better educated and trained – the greater our income and wealth. Economists call this “human capital” – and it’s worth big bucks to us.

How do the people in an economy add a bit more to their wealth each year? Mainly by saving some of their income rather than consuming it all. We save not just through bank accounts, but by slowly paying off our mortgages and putting 9.5 per cent of our wages into superannuation.

It’s the role of the financial sector to lend our savings to people wanting to invest in the assets we count as wealth: homes, business structures and equipment and public infrastructure. So if most of our annual income comes from wages, most of our savings come from wage income and our savings finance much of the investment in additional assets.

But because our natural endowment and human capital give us more investment opportunities that can be financed from our savings, we long have called on the savings of foreigners to allow us to invest more in new productive assets each year than we could without their participation.

Some of the foreigners’ savings come as “equity investment” – their ownership of Australian businesses and a bit of our real estate – but much of it is just borrowed. These days, however, our companies’ (and super funds’) ownership of businesses or shares in businesses in other countries is worth roughly as much as foreigners’ equity investments in Oz, meaning all our net liability to the rest of the world is debt.

Naturally, the foreigners have to be rewarded for the savings they’ve sunk into our economy. We pay them about $60 billion a year in interest and dividends, on top of the interest and dividends they pay us.

The main thing we get in return for this foreign investment in our economy is more jobs (and thus wage income) than we’d otherwise have, plus the taxes the foreigners pay.

People worry we can’t go on forever getting wealthy by digging up our minerals and flogging them off to foreigners. It’s true we may one day run out of stuff to sell, but our reserves – proved and yet to be proved – are so huge that day is maybe a century away (and the world will have stopped buying our coal long before we run out).

A bigger worry is the damage we’re doing to our natural environment in the meantime, which should be counted as reducing our wealth, but isn’t.

But mining activity accounts for a smaller part of our high standard of living than most people imagine – only about 8 per cent of our annual income.

Most of our prosperity – our wealth, if you like – derives from the skill, enterprise and technology-enhanced hard work of our people.

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More jobs for older workers than ever before

“Too old, too senior, too experienced, too expensive – heard ’em all. Ours is a society which does not value age and lived experience. Over 50? It’s the scrap heap for you.”

I can’t remember where I saw that quote, but I bet you’ve heard those sentiments many times. The media are always bringing us stories about people who, having lost their job in late middle age, find it very hard – even impossible - to get another one.

It’s understandable that people experiencing such treatment get pretty bitter about it. And it’s not surprising the media and the politicians take their complaints so seriously. The federal government has appointed successive age discrimination commissioners, and instigated various schemes offering subsidies to employers willing to hire older workers.

All of which is just as likely to increase prejudice as reduce it. The more public figures bang on about the prevalence of age discrimination, the more they risk sending a message to employers that if everyone else is ridding themselves of older workers, why aren’t they?

And if older workers weren’t sub-standard, why would the government find it necessary to subsidise their cost?

It would be silly to deny that some employers are prejudiced against older workers – just as some are prejudiced against young workers (an injustice the media are far less eager to tell us about).

But it’s just as silly to leap from the truth that some proportion of older workers has trouble finding re-employment to the outlandish claim that every worker over 50 is headed for the scrap heap.

I don’t know the true extent of discrimination against older workers, but I’m pretty sure we’ve been given an exaggerated impression of it, with many older workers caused to worry unnecessarily.

If there was any truth to the notion that everyone over 50 is headed for the scrap heap, we should be seeing a sharp decline in the rate at which people over 50 are participating in the labour force.

But we’re not. Indeed, the reverse is happening. The statistical truth is that the participation rates of older age groups are higher than they’ve ever been – a point Reserve Bank governor Dr Philip Lowe made in a little-noticed speech last year.

The ageing of the population – and, more particularly, the retirement of the baby-boomer bulge – means the proportion of older people working should have declined. Remarkably, it’s increased.

There was a time when early retirement was all the rage. As soon as you could retire, you did. And a lot of workers were retired involuntarily.

But those days are long gone. The age at which men and women are retiring keeps rising. In the 1980s and ‘90s, less than one worker in 10 was over 55. Today it’s almost one in five.

Since 2000, the “participation rate” for men aged 55 to 64 has risen from 60 per cent to about 67 per cent. The rate for women has been rising since the early ‘80s – from 20 per cent to 60 per cent.

For men aged 65 and over, the participation rate has risen since 2000 from 10 per cent to almost 20 per cent. (Read that again if it didn’t sink in.) For women in the same age group, participation has gone from a per cent or two to about 10 per cent.

The big news is that older people are staying longer in the workforce than ever before, but the story we’re being fed is that employers are discriminating against older workers wherever you look.

How has this remarkably under-reported truth come about? Partly for negative reasons. The higher cost of homes has caused people to take on mortgages later in life, meaning some people have higher levels of mortgage debt as they approach retirement and don’t want to stop working until it’s paid off.

The knowledge that we’re living longer – combined with the super industry’s unceasing efforts to convince us we haven’t saved enough – has prompted some people to delay their retirement.

Governments have lifted the age pension age to 65 for women, and are now phasing the age for both sexes up to 67. They’ve also raised the age at which you may access your superannuation savings.

But then there are the positive reasons. The present generation of older workers is much healthier than earlier generations.

And we’re living longer. Which makes it hardly surprising we’re working longer. Of course, another factor that’s helping is greater acceptance by employers of “flexible work practices” – including allowing workers to shift from full-time to part-time. That is, there’s been a rise in semi-retirement.

Then there’s the fact that more and more people work in the services sector, in jobs that tend to be less physically demanding.

But perhaps the biggest factor is the delayed effect of the trend for most mothers to return to the workforce after childrearing. Now more of them are still working decades later.

Oldies are always expounding on the supposed shortcomings of the younger generation. But there’s one respect in which oldies set youngsters a bad example: they’re champions at feeling sorry for themselves – even when the facts don’t back them up.

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