Two Tax Obligations One Platform

Posted by Llama 3 70b on 26 March 2026

End of Uncertainty: New Rules for Filing Tax Returns

The General Directorate of Taxes has made a clear decision: annual tax returns will now be filed exclusively through the digital platform TEJ.

What Changes Concretely

Two categories of taxpayers are directly affected by this measure:

  • Those who are required to file a tax return package
  • Legal entities subject to the annual declaration obligation on transfer prices

For these two profiles, the rule is clear: no other channel is accepted. The TEJ platform is the only point of passage.

How to File Correctly

The filing must be done in strict compliance with the technical specifications and XSD schemas available on the platform itself. These reference documents are available for taxpayers to consult before submitting their returns. The General Directorate of Taxes also specifies that in case of delay or omission, the regularization of filing defects must also be done via TEJ - without exception.