The Colombian National Tax Authority (DIAN) published an official announcement providing the tax calendar for tax year 2017, on 22 February 2017. This calendar provides the deadlines for personal tax, corporate tax, withholding taxes, income tax for large taxpayers unit, VAT, fairness tax, consumption tax, foreign assets reporting and so on.

Taxpayers are required to file returns and pay the taxes by the deadlines stated in the tax calendar 2017 based on the last two digits of their Tax Identification Number. The 2017 tax calendar effects from February 2017 to January 2018.