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Tax is too high every which way

By David Leyonhjelm - posted Monday, 25 May 2015


Whichever way you look at it, our taxes are high. 

They are high by historic standards.  Fifty years ago, taxes were around $5,000 per person after adjusting for inflation.  This grew to around $8,000 per person by the mid‑1970s, $11,000 by the mid‑1980s, $12,000 by the mid‑1990s and $17,000 by the mid‑2000s.  Today the tax burden is around $19,000 per person, still allowing for inflation.

Even if the tax burden had grown in line with growth in wages and the economy, it would only be $13,000 per person. Those bleating about crashing revenues are on another planet.  Their complaint, in essence, is that taxes ought to grow even faster.

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There is no justification for the ever-expanding tax burden.  Living standards for all groups of society have risen over the last fifty years, which means the need for government welfare services has declined.  And we haven’t uncovered new forms of effective government intervention either.  To the contrary, the prosperity‑promoting effects of free markets and the many failings of government involvement have been demonstrated time and again. 

Yet the growth of tax is unwavering, supported by the fact that its collection over the decades has become both hidden and automatic, a development euphemistically known as ‘tax efficiency’.

Our taxes are also high by international standards. The Coalition, Labor and the Greens will tell you that Australia’s tax burden is around 28 per cent of GDP, compared to an OECD average of around 34 per cent.  This is a con job using dodgy statistics.

The 34 per cent figure is a simple average that puts the same weight on each of the thirty four countries of the OECD.  Thus high‑taxing Iceland has as much impact on the average as the lower‑taxing United States, even though the US’s population is 1,000 times bigger than Iceland’s. 

If you properly account for the different sizes of the OECD countries, the average tax burden in the OECD comes out at 30 per cent of GDP.

What’s more, this weighted average for the OECD is bumped up by the inclusion of ‘social security’ or ‘National Insurance’ contributions present in most countries of the OECD except Australia — while the tax burden figure for Australia is artificially kept down by the exclusion of superannuation guarantee payments. 

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If superannuation guarantee payments are excluded, then at least some of the social security contributions in other countries should be excluded too.  After all, both are compulsory, they add to the individual payer’s retirement income, and their preservation for retirement is similarly subject to significant government manipulation and pilfering.

Once we exclude both from the calculations, the weighted average tax burden in the OECD falls to 22 per cent of GDP, while Australia’s tax burden remains at 28 per cent of GDP.  And even if we exclude only half of the social security contributions on the grounds that only half of them resemble Australia’s superannuation guarantee payments, the OECD average tax burden would still be lower than Australia’s tax burden.

Another way to compare tax burdens in a fair way is to include both superannuation guarantee payments and social security contributions in the calculations.  Under this approach, the weighted average tax burden in the OECD is 30 per cent of GDP, while Australia’s tax burden rises to 31 per cent of GDP.

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This article was first published in the Australian Financial Review.



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About the Author

David Leyonhjelm is the Liberal Democrat Senator for NSW.

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