UBS has received an order from the Swiss Federal Tax Administration to provide information based on a French request for administrative assistance in tax matters, the Swiss bank said on Tuesday.
"The request concerns a number of UBS account numbers pertaining to current and former French domiciled clients and is based on data from 2006 and 2008," UBS, Switzerland's biggest bank, said in a statement.
UBS said it planned to take legal steps to have the "admissibility of the administrative assistance request evaluated by the Swiss Federal Administrative Court" in order to ensure legal clarity.