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Data format specifications

There is a data format specification available for each tax filing type. You can find their updated versions at this website.

For more information on data format specifications and earlier versions of them, send e-mail to ohjelmistotalot(a)

Tax Administration's Data Format Specifications

Press the link below to go to the file description at the extranet site of For more information and enquiries on the extranet password, send e-mail to teossara(a)

  • Data format specifications - Kela