European Commission recovered up to €13bn from Apple in back taxes in favor of the Irish authorities.

A  three-year antimonopoly investigation concluded that the U.S. firm's Irish tax benefits are illegal, BBC reported.

The European officials came to a conclusion that the American company received unreasonable tax benefits in Ireland that allowed paying substantially less than other businesses, in effect paying a corporate tax rate of no more than 1%.

The Financial Times previously suggested that Apple and Irish authorities will appeal the judgment.

Under EU legislation, individual countries' tax authorities have no right to give tax credits to selected companies as this is considered to be illegal state aid.

According to the Irish government decision in 1991 and 2007, Apple was allowed to reduce the size of tax deductions in the country.