More than seven million Colombians must file their personal income tax returns for the 2025 fiscal year during 2026 [1].

This filing requirement ensures the national government collects necessary revenue from individuals who meet specific economic thresholds. Failure to comply with the Dirección de Impuestos y Aduanas Nacionales (DIAN) calendar can result in legal penalties for taxpayers.

Under Colombian tax law, individuals are obligated to report their earnings and pay corresponding taxes if their income or assets exceed limits established by the DIAN [2, 3]. The process is managed through the agency's online platform, which allows users to verify their filing status and submit documentation digitally [4, 5].

The tax calendar for 2026 has already begun, with the first official deadline occurring on June 28, 2026 [4, 6]. Taxpayers are encouraged to use the online tools provided by the DIAN to determine if they have surpassed the required thresholds for the previous year's earnings [4, 5].

To facilitate the process, the DIAN said digital assistance is available for those navigating the requirements [2]. This system is designed to reduce errors in reporting and streamline the collection of taxes for the millions of citizens affected by the 2025 fiscal year requirements [2, 3].

Individuals who are unsure of their obligations are advised to check the official portal to avoid missing the windows set by the tax authority [4, 6].

More than seven million Colombians will have to file a tax return in 2026

The scale of this filing requirement reflects the Colombian government's continued push toward digital tax administration. By migrating millions of taxpayers to an online portal, the DIAN aims to increase compliance rates and reduce the administrative burden associated with manual filings, while ensuring the state captures revenue from those with higher asset growth in 2025.