Switzerland's top court has ruled that the government can transfer the bank records of an American client of Credit Suisse to the US tax authorities, giving a boost to the country's efforts to end US investigations of Swiss banks. The Swiss Federal Supreme Court said in a statement on Friday it had rejected an appeal against a lower court's decision, ruling that requests for such assistance were admissible in cases of suspected tax fraud.
The ruling comes as the Swiss government is trying to seal a deal to end US investigations into the country's banks. The deal is expected to result in fines totalling up to $10 billion and the transfer of names of Americans suspected of evading tax. The United States submitted a fresh request to Switzerland last year for information on former Credit Suisse clients suspected of cheating on their US taxes, after an earlier attempt was blocked by a Swiss court.
Credit Suisse is among more than a dozen banks under formal US investigation, including Julius Baer, the Swiss arm of Britain's HSBC, privately held Pictet and state-backed regional banks Zuercher and Basler. The Swiss government agreed on Wednesday that banks could seek permission to help them to avoid US criminal charges by handing over data including on bank staff, though they would not be allowed to hand over client names directly.
The government will consider US requests for information on clients under existing double taxation treaties, as in the case the Supreme Court just ruled on. But Swiss officials have warned that US patience could start running out - potentially triggering the indictment of a bank - if the handover of information on clients and bank staff keeps getting held up in the courts. Last month, a Swiss court ordered an injunction halting the transfer of a former Credit Suisse employee's data to US tax authorities.