Oman will introduce mandatory e‑invoicing for B2B and B2G transactions using a 5‑corner Peppol network, and for B2C via a clearance model through OTA’s Fawtara platform. The rollout begins with a pilot in August 2026, followed by mandatory phases in February 2027 and August 2027 for all VAT‑registered taxpayers.

Italy’s e‑invoicing system will adopt new SDI technical specifications effective 15 May 2026, adding VAT‑group checks, expanded accreditation limits, and a sports‑worker exemption code. The ViDA directive will require Italy to shift from its centralized SdI model to a decentralized reporting architecture by 1 January 2035, and to adopt the EN16931 standard. These changes affect ERP vendors, e‑invoicing service providers, and all businesses issuing electronic invoices in Italy.

Egypt’s Tax Authority has issued new executive instructions establishing a unified VAT refund framework. The new system introduces an electronic completion platform, shortens refund processing to 20 days, and sets a two‑day review period with email notifications for missing documents. The framework also prioritises white‑listed companies and requires electronic invoice statements for refund claims.

Belgium’s FPS BOSA has released updated guidance on its mandatory 2026 B2B e-invoicing regime, clarifying invoice rejection, reverse charge wording, and Peppol delivery monitoring. The update introduces new rules for handling incorrect recipients, softens automatic rejection of reverse charge invoices, and confirms that suppliers must be registered in Peppol to receive self‑billing documents.

Egypt’s Tax Authority has issued new executive instructions to streamline VAT refund processing. The reforms cut the refund period to 20 days, shorten review time to two working days, and set clear notification and document‑submission deadlines. The changes aim to improve speed, accuracy and digital integration for taxpayers.

Poland’s Ministry of Finance has drafted a regulation aligning foreign VAT refund procedures with the KSeF mandatory e‑invoicing platform. The draft requires foreign businesses to reference KSeF invoice identification numbers in refund claims, with transitional measures for claims before 1 January 2026. EU and non‑EU businesses must provide KSeF references or supporting invoice documentation depending on availability.

France's e-invoicing mandate will enter its first phase on 1 September 2026, requiring large companies to issue and receive electronic invoices and submit e‑reporting to the PPF, while small firms must only receive them. The latest External Specifications v3.2, published 30 April 2026, mandate hourly aggregation of PPF submissions by Accredited Platforms and clarify B2G, G2B, and G2G processing. AFNOR standards are slated for final updates by the end of May 2026 to cover additional use cases such as agriculture and food industry.

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.