THE chancellor is to step up hostilities against Britain’s super-rich by pressing for sanctions against Monaco, the Mediterranean tax haven.

Under one proposal, to be discussed by Alistair Darling with European finance ministers on Tuesday, there will be a levy on any money transferred to a Monaco account from anywhere in Europe. Precise policies will be discussed the following week at a meeting of Europe’s tax authorities in Berlin.

The threat of sanctions marks an escalation in the battle between European governments and the continent’s three remaining tax havens: Liechtenstein, Andorra and Monaco.

“So far the attention has been on Liechtenstein, but Monaco is the goldmine,” said a Whitehall official. “Germany has got the bit between its teeth now and Monaco is where they want to go next – and we’re right with them.”

Under Prince Albert II, Monaco has stuck to its zero income tax rate and refusal to share data with the world’s tax authorities. The principality has about 8,000 citizens, plus an expatriate community of at least 25,000.

Sir Stelios HajiIoannou, founder of easyJet, Tina Green, wife of the retailing magnate Sir Philip Green, Wafic Said, the arms broker, and Sir David and Sir Frederick Barclay, the proprietors of the Telegraph Media Group, are among the British business grandees domiciled in Monaco.

Other high-profile names include Sir Roger Moore, the former James Bond actor, Lord Laidlaw, the Tory peer, and Simon Reuben, the property entrepreneur. There is no suggestion that any of these individuals have illegally evaded tax by basing themselves in Monaco.

Hundreds of London hedge fund and private equity managers also live in Monaco, which is just 1hr 40min from London’s City airport by private jet.

The government has also toughened rules that allow Britons to qualify as nonresident even if they spend four working days a week in Britain. From April businessmen commuting to Britain from Monaco will have to include the day of travel as part of the 90 days a year they are allowed to spend in Britain before they are obliged to pay UK income tax.

Meanwhile, HM Revenue & Customs (HMRC) expects to obtain £100m in unpaid tax from 100 Britons who bank in Liechtenstein. It paid £100,000 to Heinrich Kieber, a former bank employee, for clients’ names and bank account details. In the past few days it has begun sending them letters referring to their account numbers.

The European commission said this weekend that it is ready to prise open Europe’s tax havens. “We are ready to cooperate. Nobody can solve this bilaterally,” said a spokeswoman for Laszlo Kovacs, the EU taxation commissioner.

Key to the commission strategy will be tightening loopholes left by a 2005 directive requiring member states automatically to share information with each other on bank customers.

Austria, Luxembourg and Belgium refused to give up their right to banking secrecy and the same exemption exists for Liechtenstein, Monaco, Andorra, Switzerland and San Marino. EU officials now hope there will be enough political pressure to push this entire bloc of countries towards sharing their data.

Brussels has also set its sights on tax havens in Hong Kong, Singapore and Macau.

HMRC said there were now three names, including Monaco, on a list of uncooperative countries held by the intergovernmental body the Organisation for Economic Cooperation and Development.

“The OECD is looking for an indication that the three states on the list understand that they have to change their approach . . . banking secrecy laws designed to shield money laundering and tax evasion from the authorities are from a bygone era – they have no place in the modern world,” a spokesman said.

Whistleblower now ‘most wanted’

Heinrich Kieber, who has made millions of euros by selling stolen bank records to the world’s tax authorities, is now Liechtenstein’s “most wanted” man.

Born in 1965 he has lived in Spain, New Zealand, the United States and South Africa but returned to Liechtenstein in 1999 and found work digitalising the records of the biggest bank, LGT, which he supplied to up to 11 tax authorities.

Friends knew him as “Super Henry” and said he was talkative, easy-going and fond of pubs.

It is thought Kieber has now fled to Australia where he is using one of at least two identities given to him by German intelligence.

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