Oman e-Invoicing Mandate

This guide provides an overview of e-Invoicing requirements in Oman, including the legal framework, the use of the Oman e-Invoicing platform, compliance obligations, and key reporting considerations. It is intended to assist businesses that issue or receive invoices for transactions subject to VAT in Oman.

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Belastingdienst

Oman Tax Authority (OTA)

Startdatum van het mandaat

Pending - Starting August 2026

Digitale handtekening

Not Required

Archivering

Verplicht – 10 jaar

Factuurformaat

PINT OM Billing

Oman’s e-Invoicing regime, established under Sultani Decree 151/2020 and Executive Regulations Decree 121/2020, was introduced by the Oman Tax Authority (OTA) to strengthen VAT compliance following VAT’s 2021 rollout. Implementation is phased, starting with large taxpayers, and requires invoices to follow a standardized data model with unique identifiers, transmitted directly or via OTA-certified platforms. Covering both B2B and B2C transactions, the framework enables real-time VAT monitoring, mandates 10-year electronic archiving, and imposes penalties for non-compliance.

Details van de opdracht
Status van het mandaat
Welke soorten transacties moeten via e-Invoicing worden gemeld?

Effective: August 2026

Implementation is phased, starting with large taxpayers. 

B2B

B2C

B2G (2028)

Zijn er drempels die bepalen of e-Invoicing ?

4 Phases:

Pilot Phase: 100 Large taxpayers (Aug 2026)

Phase 1: All large taxpayers with annual supplies exceeding OMR 5 million (1 April 2027)

Phase 2: All remaining taxpayers and SME’s (1 October 2027)

Onboarding Phase: B2G (Proposed February 2028)

What are the implementation dates of the e-Invoicing mandate?

Transactietype
Aug 2026
1 Apr 2027
1 Oct 2027
2028
Lokaal - B2G (Openbaar)
***
Lokaal - B2B (binnenlands)
*
**
***
Lokaal - B2C (binnenlands)
*
**
***
Lokaal - Grensoverschrijdende rapportage
*
**
***
Buitenland - B2B/B2C (nog niet gevestigd)
*
**
***
Pilot Phase: Selected large taxpayers
*
Phase 1 (Expansion phase): All large taxpayers with annual supplies exceeding OMR 5 million
**
Phase 2 (SME onboarding phase): All remaining taxpayers
***
B2G Onboarding Phase: 2028
Not Mandatory
Do I need to have a permanent establishment in Oman to be required to e-Invoice?

No, the obligation is linked to VAT-registration and not establishement.

Yes, only VAT registered entities that fall within the phased rollout (threshold revenue based) have to comply, this includes foreign VAT-registered businesses.

B2B: Real time

B2C: 24- hours

Failing to comply with the e-invoicing mandate is regulated by Article 202 of the VAT law.

Failing to issue an e-invoice or meet reporting requirements; fines will be levvied ranging from OMR 500 (EUR 1116.83) to OMR 5000 (EUR 11168.32) with potential business suspension for severe or repeat offences.

Steps to be performed by customer

1. Identify under which phase you will be subject to the mandate.

Steps VAT IT can assist with

2. Connect to an Accredited Service Porvider (ASP) connected to the Fawtara Portal.
3. Update ERP and billing processes to support e-invoicing and reporting obligations.
4. Ensure e-invoice structural compliance and e-archiving requirements are met.

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