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New version of to be launched 29 January 2018


There will be a downtime on Jan 29 between 7.00 and 9.00 making both the website and its user interfaces temporarily unavailable.

Updated version has the following features:

  • It lets you check and submit income tax returns for corporate taxpayers (Forms 4, 6, 6B, 6C and 6U) for 2018 accounting periods.
  • The enclosure combinations of income tax returns have been changed to be year-specific.
  • Starting 29 January 2018, it can check Employer Payroll Reports and other annual information returns for the 2018 reporting year.
  • Starting 22 February 2018, eSara files following the latest XML scheme (version 1.2) can be checked and sent to Kela.

Information for software developers regarding this version update


  • Corporate taxpayers' 2018 formats (for Tax Returns 4, 6, 6B, 6C, 6U) and TaMo checks as defined in the Data Format Specifications are added (the updated specifications are found at the website).
  • We will add the 2018 formats for annual information returns and their TaMo checks, as defined in the Data Format Specifications (the specifications are found at the website).
  • New year-by-year table for enclosure combinations for income tax returns is available on
  • In the Prepayment Register entry verification (VSENPERE) data flow answer files, data for 'Next check date' is no longer returned after 1 March. VSENPERE and VSALVTAR Data File Specifications have also changed. Data File Specifications are available on