What is the Oman e-invoicing timeline?

Oman's e-invoicing rollout is being introduced in four phases, allowing the Tax Authority to gradually bring different taxpayer groups into the system.

The first phase is the pilot rollout, covering 100 selected large VAT-registered companies. Implementation began in August 2026.

The second phase covers all large VAT-registered taxpayers and is scheduled to begin in February 2027.

The third phase covers all remaining VAT-registered taxpayers and is scheduled to begin in August 2027.

The fourth phase covers government institutions and entities. The OTA's current FAQ states that this phase is planned to begin in February, but the specific year has not yet been announced.

The Tax Authority has also stated that rollout participants will be contacted at least six months before their onboarding. This gives businesses time to assess their ERP or accounting systems, select an accredited service provider, map their invoice data to the Oman PINT specifications, and complete testing before their implementation date.

Businesses that are not yet in the mandatory rollout can also consider voluntary adoption. Starting early can give companies more time to identify integration issues and prepare their teams before the system becomes mandatory for them.

Key points

• August 2026: Pilot for 100 selected large VAT-registered companies.
• February 2027: All large VAT-registered taxpayers.
• August 2027: Remaining VAT-registered taxpayers.
• February: Government institutions and entities, with the year yet to be announced.
• OTA provides rollout participants with advance onboarding communication.
• Businesses can prepare and adopt e-invoicing before their mandatory phase.