inland revenue(the Inland Revenue the former name of the UK government department which collected national taxes in Britain. In 2005 it joined together with Her Majesty's Customs and Excise to form Her Majesty's Revenue and Customs. LDCE Alexander Demidov)
tax authority(A government organization responsible for collecting taxes.: The Act has prompted the creation of Revenue Scotland, a Scottish tax authority to replace HMRC for devolved taxes. WordHippowiktionary.orgAlexander Demidov)
the Internal Revenue Service(in the US) the government department that is responsible for collecting most national taxes, for example income tax. compare HM Revenue and Customs. OALD Alexander Demidov)
Federal Taxation Service(The Federal Taxation Service (In Russian: Федеральная налоговая служба, ФНС России) is a federal body of executive authority responsible for carrying out state registration of legal entities and natural persons as individual entrepreneurs and farmsteads. wikipedia.orgAlexander Demidov)