Oman Tax Authority Publishes Draft E-Invoicing Data Dictionary Ahead of 2026 Implementation

• Oman will implement e-invoicing starting August 2026, with 100 large taxpayers selected for Phase 1.
• The Oman Tax Authority released a draft e-invoicing data dictionary in November 2025 for consultation and held workshops to explain its use.
• The data dictionary standardizes invoice data, defines business terms, business rules, and code lists for compliance and interoperability.
• Oman’s framework aligns with the PEPPOL model but includes Oman-specific requirements; formal adoption of PEPPOL is still under discussion.
• E-invoicing will cover all transaction types and supply categories, including B2B, B2C, and B2G.

Source: kpmg.com

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.

---

---