Peppol Country Guide · Oman
Mandatory B2B, B2C & B2G E-Invoicing via Fawtara from 1 August 2026
Oman is the first GCC country to adopt the Peppol 5-corner model for e-invoicing. The OTA's Fawtara platform goes live August 2026 for 153 pre-identified large taxpayers. SP accreditation opens May 2026 — the time to prepare is now.
Overview
Oman's National E-Invoicing System: Fawtara
Oman's national e-invoicing system is called Fawtara (فاتورة — Arabic for "invoice"), operated by the Oman Tax Authority (OTA). It is built on the internationally recognised Peppol 5-corner model, making Oman the first GCC country to adopt this framework. National infrastructure is developed in partnership with Omantel, Oman's national telecom provider.
The mandate covers B2B, B2C, and B2G transactions simultaneously — including export invoices and self-billing on imports. This broad scope from day one differentiates Oman from other regional mandates that phase in transaction types separately.
Oman introduced 5% VAT in April 2021. Fawtara is the next phase of OTA's tax digitalisation strategy, underpinned by the VAT Law and designed to bring Oman in line with global e-invoicing standards via the Peppol framework.
Key distinction from other GCC mandates: Unlike Saudi Arabia's proprietary ZATCA clearance model, Oman uses the open Peppol 5-corner standard — the same technical framework used across Europe, Singapore, and Australia. Existing Peppol infrastructure can be adapted rather than rebuilt from scratch.
SP registration opens May 2026. The first mandatory deadline is 1 August 2026 for 153 pre-identified large taxpayers. Full coverage of all VAT-registered entities is targeted by 2028.
The 5-Corner Model
How Invoice Exchange Works in Oman
Fawtara uses the Peppol 5-corner model — an extension of the standard 4-corner Peppol architecture. The fifth corner is the OTA itself, which receives a real-time copy of every invoice for tax oversight and VAT validation.
The invoice flows from Supplier → Supplier's Accredited SP (Corner 2) → Peppol network → Buyer's Accredited SP (Corner 3) → Buyer. Simultaneously, a copy is transmitted to the OTA (Corner 5) in real time.
For Arratech customers: Arratech acts as your accredited OTA Service Provider (corners 2 and 3), handling Peppol transmission, OTA real-time reporting, and UBL format compliance — through the same unified API used across all Peppol markets.
Implementation Timeline
Fawtara Rollout, 2025 to 2028
Technical specifications published by OTA.
Developer pilot portal launched by OTA.
SP registration opens. Connect and test now.
MANDATORY — Wave 1: 153 largest taxpayers. B2B, B2C, B2G, exports.
Extension to other large B2B taxpayers.
B2G transactions included; all VAT-registered entities covered.
B2C & SP Accreditation
B2C E-Reporting and Service Provider Requirements
B2C: QR Code + Batch Reporting
B2C transactions use a simplified e-reporting model rather than the full 5-corner exchange. Businesses must print or display a mandatory QR code on consumer-facing invoices. Transaction data is submitted to the OTA in batches — not in real-time per transaction — making it practical for high-volume retail scenarios.
Software vendors must plan for both flows: the 5-corner structured UBL exchange for B2B and a separate QR generation and batch reporting pipeline for B2C.
SP Accreditation Requirements
All businesses must connect through an OTA-accredited Service Provider. To become accredited, SPs must meet:
- Commercial registration in mainland Oman
- Minimum OMR 60,000 paid-up capital
- ≥ 2 years operational history
- ISO/IEC 27001 certification
- High-level architecture documentation
- MFA implemented
- Encryption at rest and in transit (TLS/SSL)
- Security monitoring / SOC / SIEM
SP registration opens May 2026. Onboarding takes time — begin your SP selection process now to ensure Wave 1 readiness by August 2026.
Characteristics
Oman Fawtara at a Glance
Key facts every software vendor and compliance team needs to know before building for the Oman market.
153 pre-identified large taxpayers must be live with Fawtara from 1 August 2026. OTA has confirmed this list will not expand before the deadline.
Decentralised 5-corner Peppol model. Oman is the first GCC country to adopt this framework. Invoice exchange is peer-to-peer via accredited Service Providers.
Structured UBL aligned with Peppol BIS interoperability profiles. OTA's Peppol data dictionary defines Oman-specific mandatory fields and validation rules.
Fawtara covers all transaction types simultaneously — domestic B2B, B2C (QR code + batch e-reporting), B2G, export invoices, and import self-billing.
All businesses must connect through an OTA-accredited Service Provider. SPs must be commercially registered in mainland Oman with minimum OMR 60,000 paid-up capital.
B2C invoices must carry a mandatory QR code. Data is submitted to OTA in batches — not real-time per transaction — reducing integration complexity for high-volume retail.
The Oman Tax Authority (OTA) operates the Fawtara platform in partnership with Omantel, Oman's national telecom provider. OTA accredits all Service Providers.
All VAT-registered entities are ultimately in scope. Oman introduced 5% VAT in April 2021. The mandate is the next phase of OTA's tax digitalisation strategy.
August 2026 (153 large taxpayers), January–September 2027 (other large B2B), August 2028 (B2G + all VAT-registered). SP registration opens May 2026.