The Federal Tax Service of Russia published an advisory on July 1, 2026, urging taxpayers to adopt the newly revised declaration form for indirect taxes, effective immediately. The updated form, designated as “Form 5-NDFL‑IND‑2026,” incorporates several structural changes, including the addition of new line items to capture excise tax liabilities, revised categorization of taxable goods, and an expanded section for specifying tax bases. The advisory explains that the modifications are intended to improve data accuracy, facilitate automated processing, and align reporting standards with recent legislative amendments. Taxpayers are instructed to replace previously submitted forms with the new version for all declarations filed after July 1, 2026, and to retain copies of both the old and new submissions for reference. The FTS emphasizes that failure to use the updated form may result in processing delays and potential penalties. To assist taxpayers, the service has released an online tutorial and a downloadable sample filled out for illustrative purposes. Additionally, regional tax offices are offering consultation sessions to address specific questions about the revised fields and to provide guidance on reconciling previous declarations with the new format. The advisory also clarifies that electronic filing is mandatory for entities exceeding certain thresholds, encouraging the adoption of digital submission channels to expedite processing and reduce administrative burdens.