Brazil introduced a new federal CBS tax on digital services effective 1 January 2026, replacing PIS and Cofins. The consolidated rate of 26.5% (CBS 8.8% + IBS 17.7%) applies to non‑resident providers and marketplaces, which must register and comply with Nota Fiscal e‑invoicing. B2B customers can self‑account, while B2C transactions are subject to collection by the provider.

Greek VAT update: The omnibus tax bill tabled on 1 May 2026 introduces immediate tightening of the reverse charge for construction services, reduces the VAT rate on electricity transmission services to 6 %, and retroactively lowers penalties for nil and credit VAT returns and late withholding filings back to April 2024. Volume‑based rebate clarifications also take effect immediately. All changes are expected to apply from publication in the Official Gazette, with updates reflected instantly in invoices, VAT returns and e‑invoicing.

ZUGFeRD 2.5 will be released on 20 May 2026 for Germany and France, adding native support for gross invoicing and aligning with the latest EN 16931 code lists. The update also expands reference templates for construction, leasing, reverse charge and simplified invoices, and reinforces cross‑border participation through an English version of the ZR framework.

Kenya Revenue Authority will automatically link export records from the customs platform iCMS to VAT returns in iTax starting May 2026, requiring exporters to have verified export values linked to their PIN and valid electronic tax invoices. This eliminates manual zero‑rated sales declaration, blocks unsupported refund claims at source, and extends oversight to services exports prefilled via electronic invoices.

Oman is rolling out a structured e-invoicing system called Fawtara, mandating XML-based invoices, Peppol network routing, and real‑time reporting. The phased rollout begins in August 2026 for large taxpayers and expands to all VAT‑registered businesses by August 2027. Key technical requirements include Oman‑specific PINT format, seller UUID, and accredited access points with MFA and ISO 27001.

UAE has launched a Peppol-based 4‑corner e‑invoicing model with a phased rollout. Large businesses must appoint an Accredited Service Provider by 31 July 2026 and begin mandatory e‑invoicing on 1 January 2027, while smaller businesses and government entities follow later dates. The mandate requires PINT AE format invoices transmitted via Peppol, with penalties up to AED 5,000 per month for non‑compliance.

This guide explains how to design an e‑invoicing RFP that accommodates the growing number of mandates worldwide, highlighting the EU’s ViDA deadline of July 2030 for intra‑EU B2B e‑invoicing and outlining five compliance models. It offers practical steps for mapping mandates, drafting model‑specific questions, and evaluating vendors on regulatory adaptability, integration, and security.

The United Arab Emirates has launched a Peppol‑based 4‑corner e‑invoicing model, allowing businesses to exchange invoices through accredited service providers. A pilot phase starts in July 2026, with full mandatory compliance for large businesses by January 2027, and for smaller businesses and government entities by October 2027. The system requires the PINT‑AE format and introduces a 5‑corner model for real‑time tax reporting.