The carousel trade (arbitrage)

Imagine two companies which are secretly controlled by the same people. If company A imported some phones, then sold them to company B, it charged VAT on the deal. If company B then exported the phones, it reclaimed — from the government — the VAT it had paid to company A. the integrity of the VAT system depends on the two totals balancing out. The money that A pays in is equl to the money that B takes back. The scam lay in A disappearing and not handing over the money it owed, but B till claiming it. The hidden owners of the two firms therefore earned for themselves 17.5 per cent (the rate at which VAT was then charged) of the value of the shipment of the phones. The more phones you sold to yourself, the more money you made.

That is John Lanchester in the LRB, citing Oliver Bullough’s Everybody Loves Our Dollars: How Money Laundering Won.