Serbia has introduced significant amendments to its VAT Rulebook, effective from the April 2026 VAT period. Key changes include mandatory SEF self‑invoicing using the “Individual VAT Record – Internal account” document type, new rules for VAT base estimation, adjustments, discounts, and goods returns, and simplified timing and consolidation of adjustment documents. These reforms tighten compliance and digital reporting requirements across the country.

Serbia’s new e‑invoicing law, adopted in Official Gazette No. 109/2025, introduces mandatory e‑invoicing for retail sales to corporate cardholders and public sector entities, postpones pre‑filled VAT returns to 2027, and requires internal invoices to be generated in the SEF system. The Ministry of Finance also released SEF version 3.14.0 with new validation and reporting features.

Serbia’s 2026 VAT amendments overhaul reporting, invoicing and timing rules, with most provisions taking effect on 1 April 2026. The changes tighten internal invoicing requirements, postpone the pre‑filled VAT return model to 2027, and expand the scope of electronic invoicing (SEF) for internal invoices. Businesses must adjust ERP systems and compliance workflows to meet the new deadlines and documentation mandates.