The massive cost of tax dodges
One of the best tax avoidance tactics in the late Roman Empire was to sell yourself into slavery.
You didn't really have to work as somebody's slave, of course - it was more like rock star Hotblack Desiato being "dead for a year for tax reasons" in Douglas Adams' wondrous confection The Hitch-Hiker's Guide to the Galaxy - but with the legal status of slave, you were exempt from taxation.
Nowadays the legal manipulations used to avoid taxation are less dramatic, but they are spectacularly effective. Tax Justice Network board of directors member James Henry, a former chief economist at business consultancy McKinsey, has just published a report, "The Price of Offshore Revisited", which estimates the amount of wealth hidden in tax havens by the super-rich at a minimum of US$21 trillion.
It might be as much as US$32 trillion, he adds, but greater precision is impossible when the whole point of holding money overseas is to keep it secret.
Henry came up with this range of numbers by sifting through data from the Bank for International Settlements, the International Monetary Fund, the World Bank and private sector analysts - and it does not include yachts, mansions, artworks and other forms of wealth held overseas.
It doesn't matter. The point is that it's a very large amount of money: equal to the annual gross domestic product of both the United States and Japan. Some of it is the laundered proceeds of crime, and much of it is money stolen from national budgets by corrupt national elites (an estimated US$306 billion from Nigeria, US$798b from Russia, US$1189b from China), but most is deposited by the super-rich of the West.
Henry's report, published in The Observer last weekend, calculates that almost half of the minimum estimate of US$21t is owned by just 92,000 people, some of whom pay no tax at all. Several very small places (Liechtenstein, Cayman Islands, Jersey) and a few larger countries like Switzerland make a good living by providing these tax shelters, and work very hard to protect their clients from exposure.
Back home, the "high net worth individuals" also enjoy the services of "a highly paid, industrious bevy of professional enablers in the private banking, legal, accounting and investment industries", said Henry.
We always sort of knew about it; now we know the scale.
Information of this sort is dangerous. It annoys those who merely work for a salary or an hourly wage, and whose taxes have to fill the gap created by the defection of the super-rich. It might even destabilise the established social order. But the British Government, at least, knows how to deal with that sort of thing.
Less than 48 hours after Henry's revelations, British politician and Treasury minister David Gauke went public with the assertion that the lower orders cheat on their taxes just as much as the rich.
"Getting a discount with your plumber by paying cash in hand is something that is a big cost to the revenue and means others must pay more in tax," he said.
Well, yes. Paying cash to a tradesman to get a discount, knowing that he will not report this income to the tax authorities, is something many people reading this article will have done. It is tax avoidance - and since there are a great many more of us than there are of the super-rich, these little private deals add up to a serious loss of tax revenue.
Gauke was almost philosophical about it. "Tax avoidance is not a recent problem," he said. "In the fourth century AD, the Roman Emperor Valens had to make it illegal for individuals to sell themselves into slavery to avoid tax. And while this particular ruse seems to have fallen out of fashion, there will always be some who seek to shirk their civic duty."
But it's clear enough to ordinary people that ultra-rich people who avoid taxes on vast sums of money fall into a different category from the electrician who wants to be paid in cash. And hard-pressed governments are beginning to go after the tax havens.
Britain has made a deal with the Swiss authorities under which British residents with undeclared assets in Swiss banks can make a one-off payment to the British Treasury of between 21 and 41 per cent of their total assets, clear the slate and remain anonymous. The Swiss will then levy a withholding tax of 27 to 48 per cent on future money going into those accounts, which will also go to Britain.
Germany has negotiated a similar deal, although it is awaiting ratification by the Bundestag (parliament). The US Government has taken a different tack, demanding that Swiss banks hand over information on thousands of undeclared accounts held by American citizens.
Yet while all this is going on, the amount of wealth managed by the top 10 private banks, most of it held overseas in secret accounts, has more than doubled in the past five years.
Gwynne Dyer is a London-based independent journalist whose articles are published in 45 countries.