Finance ministers from Germany and Luxembourg, on Friday signed an agreement designed to help authorities fight tax evasion, the German Finance Ministry said in a statement.The deal, which comes into force in 2010, provides that the two countries should provide relevant information about the contributors to the authorities of another country when requested, said in a statement.”The application does not mean that tax evasion has already been determined,” the Ministry of Finance.”It only takes a situation that must be explained and that the requested information and documents will be considered for tax purposes.