e-Filing guidance

The guidance articles below contain descriptions of the returns you can send us via www.ilmoitin.fi or through Tyvi Service Providers. The format, the automatic checks, and the submittal to the Tax Admininstration are discussed. 

Electronic filing of information returns General description (pdf) 16.11.2018

Making corrections to itemizations — deleting an earlier filing, adding a new filing (pdf) 9.5.2016

Making corrections to electronically filed submittals of information returns, reporting year 2018 (pdf) 1.2.2019

The control character for verifying the authenticity of finnish Business IDS and Personal identity codes (pdf)