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Oman's adoption of B2B e-invoicing and Peppol standards

Oman’s Tax Authority (TA) has been designated as the official Peppol Authority for the Sultanate. It is responsible for the implementation and success of the Peppol Network in Oman as part of the upcoming e-invoicing mandate.

Key dates and updates include:

8 December 2025: The TA published updated Frequently Asked Questions regarding the B2B and B2G e-invoicing and e-reporting mandate set for August 2026.

30 November 2025: The TA initiated a consultation on its Data Directory. This directory outlines the required e-invoicing data and fields, validation rules, and code lists. The TA plans to implement mandatory e-invoicing in phases, following a 5-corner model that includes Peppol, with Authorized Service Providers acting as intermediaries for e-invoicing between companies and reporting to the Tax Authorities.

2026 Timeline:

  • January: Second-round workshops and design phase with the TA.
  • February: Launch of the developer test portal.
  • March: Registration and accreditation for Service Providers involved in e-invoice exchanges.
  • August: The first wave will include the 100 largest taxpayers, along with voluntary registrations.

2027 Timeline:

  • February: The second wave will target other large B2B taxpayers.
  • August: A third wave will include additional taxpayers.
Country update for Oman
18 January 2026
Stay informed about the latest indirect tax developments in Oman, including regulatory changes, compliance requirements, and indirect tax guidance affecting businesses operating locally and cross-border. This page provides a structured overview of country-specific updates, such as new legislation, reporting obligations, digital tax initiatives, and implementation timelines.
These insights help tax, finance, and compliance professionals anticipate regulatory changes, adjust processes and systems, and maintain compliant operations in Oman.