This is the fourth post in the series on inequality in South Australia. The previous posts focused on different aspects of inequality in the distribution of income. This post looks at the distribution household wealth, again based primarily on the 2019-20 ABS Housing Income and Wealth data released this year.
Wealth Distribution Between Households
It is well-known that the distribution of wealth is far more unequal than the distribution of income. This is a function of both the cumulative impact of income differentials over years, as well as the ability of wealth to beget wealth (through capital gains and higher average returns on capital).
Nationally, the households in the highest wealth quintile hold 62.2% of all household wealth in Australia, while the bottom 40% of households account for on 6.1% of wealth. The P90/P10 wealth ratio sees the high-wealth households (90th percentile) owning some 52 times the wealth of the low-wealth households in the 10th percentile. (By contrast, households at the 90th percentile earn around 9 times the income of the low-income (10th percentile) households.
There is clearly a massive inequality in wealth distribution, but it is important to note that these high wealth households are not necessarily high-income households. Most obviously wealth accumulates over a life-time and at some point people retire which may leave them with some wealth but low incomes. The ABS data suggests that the wealth-income correlation is not straightforward. For instance, 10% of high-wealth households had low-incomes, while only one-third of low-income households also had low wealth. However, Piketty’s work highlights the correlations at the very top of the income/wealth spectrums where income from capital (wealth) becomes the dominant income stream.
Unfortunately, the ABS does not publish wealth ratios or wealth-by-quintile of data on a state basis, so there is limited data on wealth inequality within South Australia. However, there is some useful data on wealth distribution between states.
SA share of total household wealth
As with previous posts, I start with aggregate wealth rather than the ABS household averages because the aggregates adjust for differences in population. The graph below shows the various state and territory share of total wealth held by households in 2019-20, but plotted against the share of total income and population. It can be seen that NSW and Victoria have a greater share of wealth than of total current income, while Queensland and WA a higher share of income than wealth. South Australia’s share of the total wealth held by Australian households is quite close to its share of income (wealth 6.5% of total, income 6.3%), but both are below the state’s population share.
While this graph is a snapshot of 2019-20, the long-term trends are not easy to discern. My previous post showed that South Australia’s share of national household income has declined over the last two decades, driven in large part by a declining share of the population. However, the columns in the graph below, which show the state’s share of total household wealth, do not show a similar pattern of decline – or any pattern really. This could be a trick of data unreliability (wealth data is less reliable than income data), or of different structures of household wealth (see below) or different levels of indebtedness (which would impact on net wealth – although the data is not available over the long term).
I have included this time series data for completeness, but I draw no conclusions from it. Nor can I draw any conclusions on the distribution of wealth between households in Adelaide and the rest of the state. Even though the ABS publishes it, the regional wealth data has such high margins of error I would not rely on it. I think the primary take-out of the data above is that South Australia’s share of national household wealth is lower than its share of population. Or put another way, wealth (like income) is disproportionately held elsewhere – and with only around 6% of both wealth and income, this makes it difficult for South Australia to have an impact on Australia’s political economy.
Structure of Household Wealth
Beyond these aggregate figures, the published data based on average household wealth shows some interesting differences between South Australia and other states in the structure of wealth holdings.
The graph below shows a state-by-state comparison of different components of average household net wealth (that is, the value of household assets minus liabilities). At the highest summary level, it is clear that South Australian households on average have less wealth than Australian households generally (approximately 88% of the national average), and significantly less than states like NSW, Victoria and the ACT. This is seen in the height of the columns on the graph, but it is interesting to note that South Australian households have the fourth highest average wealth. By contrast, SA households have the second lowest average household income. Both WA and Queensland have higher average household incomes, but lower average wealth.
South Australian households fare relatively better in wealth distribution than income distribution, but this is even clearer when we look at the components of this total net wealth. One of the key reasons for SA lagging behind the richer eastern states is the higher value of wealth tied up in owner-occupied dwellings there (the blue at the top of the columns). That is, households in other states where housing prices are significantly higher are likely (on average) to have more of their wealth tied up in their homes. Not counting owner-occupied dwellings, the wealth held by the average South Australian household is just $15,000 less than the national average. The SA average is 98% of the national average.
The amount of wealth held in owner-occupied housing is important because there is considerable debate as to whether owner-occupied housing should actually be considered as wealth. At one level it is clearly an asset which can be sold for money, and (as I have argued in an earlier post) provides housing services which is a form of in-kind income which can be imputed as non-cash household income. On the other hand, as Anwar Shaikh and others have argued, it is not real “wealth” because housing is a necessity and cashing in the asset is not simply transferring a physical asset to a cash asset (with an attached transfer of income from imputed rent to other investment income). Liquidating an owner-occupied house actually leaves the owner worse-off as they will now have to pay rent.
Obviously though, the same is not true for housing properties not occupied by the owner as these are held as investments and can be liquidated in a simple swap to another form of asset.
The wealth tied up in owner-occupied housing is also important because lower housing costs in South Australia (relative to other states) can also translate to SA households holding relatively more financial assets (because their “savings” are not tied up in housing costs to the same extent). This is evident in the graph in the relatively high shareholdings and business assets held by South Australian households (seen in orange), although the ABS warns that there is a high margin of error on these particular figures and some caution is required.
Further though, (despite lower incomes) lower relative housing costs also potentially translate into lower average household debt. In 2019-20, the principal outstanding on loans for owner-occupied dwellings in SA averaged out at $88,500 per household, which was 77% of the national figure, while total household debt as a proportion of household wealth was also lower in South Australia (14.4% of total household assets in SA, 16.4% nationally).
The debt figures are averages of households with and without debt, so those in debt will have much higher amounts owing than these average figures, and the averages will be impacted by the proportions of households with/without debts. However, on its face it does suggest interest recent and predicted interest rate rises will impact slightly less in South Australia than in states (and territories) where average debt is higher.
Conclusion
What all of the above suggests is that, despite the average income of South Australian households perennially lagging behind the national average, SA fares better in the distribution of household wealth. Indeed, when the wealth data is considered without reference to owner-occupied housing (which is not transferable or income-earning in the same way as other assets), average net household wealth in South Australia is pretty close to the national average.
However, at the aggregate level, South Australia’s small share of both income and wealth shows that there are still significant issues around the state being relatively marginal to income distribution and wealth accumulation in the national economy. This has not (yet) flowed down to impact on average household wealth, but the wealth data does little to relieve the concerns highlighted in previous posts about SA being at the economic periphery.
And finally, this focus on geographic inequality should not blind us to the massive inequality of distribution of wealth within the state. There is little reason to assume South Australia is immune from the national pattern where the majority of wealth is held by the richest households and the lowest quintiles hold almost no wealth. The dual challenges remain: to get a bigger share of national economic development for South Australia, while distributing that share more equitably within the state.