For the 2017 reporting period, the primary official software was (Nalogoplatelshchik YUL), which is designed for organizations and entrepreneurs to prepare tax documents.
You generally do not need to download the generation software unless you are an employer. Individuals looking for their 2017 certificate can simply download it directly: skachat programmu 2ndfl za 2017 god
The software is available for free on the official Federal Tax Service (FTS) website. For the 2017 reporting period, the primary official