This is the meaning of income mobility. Can you better yourself if you try hard enough?

Loading

Now, this is where the Americans keep telling themselves they’re the land of opportunity. Log cabin to the White House and all that. Well, it may have been true in Abraham Lincoln’s day, but it hasn’t been true for decades. As a general rule, the more unequal incomes are, the harder it is for people’s positions on the ladder to change.

America’s incomes are highly unequal, and it’s one of the countries where changing your income status is hardest.

But this is where the Productivity Commission’s research brings good news. On income inequality, Australia is in the middle of the pack of rich countries. But when it comes to income mobility, we do what Australians love to think of themselves as doing: punching above our weight.

We pride ourselves on being the land of the fair go. Or, as dear departed Scott Morrison preferred to put it: if you have a go, you get a go. Well, guess what? We now have documentary evidence that it’s still true. According to the commission’s calculations, Australia is among the most income-mobile countries, scoring better than even the fabled Scandinavians.

Two qualifications. First, people in the middle 60 per cent of the distribution enjoy the most opportunity to move. If you start in the bottom 20 per cent of personal incomes, you have less ability to improve. And if you’re already in the top 20 per cent, it’s harder to go higher.

Loading

Second, although the commission doesn’t spell this out, mobility cuts both ways. Remember, we’re talking about relative incomes, not absolute incomes. So, if it’s easier for me to pass you on the ladder, it’s easier for you to fall below me.

How do people seek to improve their earning potential? The obvious way is to get a better education. On average, people with a uni degree or higher earn 23 per cent more over their lifetime than those who only complete year 12. And those who complete high school earn significantly more than those who don’t.

Mobility is adversely affected by significant life events, such as unemployment, serious health problems and relationship breakdowns.

So far, we’ve been focusing just on income. But wealth – the assets you own – also affects your mobility. Unsurprisingly, the less wealth you have, the harder it is to move up, and the more wealth you have, the easier it is to stay up.

The rich have always been with us, but I think the inordinate rise in the cost – and value – of homes, which is already handicapping young people without access to parental help, will also make inheritance a bigger influence on people’s income mobility.

As Australians, we have a lot to be pleased about and proud of. But we have no cause for complacency.

Ross Gittins is the economics editor.