E-invoicing consulting services

Oman's e-invoicing framework is transforming how businesses issue, exchange and manage tax invoices. As the Fawtara programme is introduced in phases, businesses need to ensure their processes, systems and governance align with Oman Tax Authority requirements.

Forvis Mazars helps businesses prepare for e-invoicing from readiness assessments and regulatory guidance to implementation planning and vendor selection support, we help organisations navigate the transition with confidence. While ERP vendors are responsible for technical system integration and implementation, we work alongside your chosen solution provider to help ensure compliance with regulatory requirements throughout the process.

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Implementation timeline

The Oman Tax Authority is introducing E-invoicing through a phased implementation programme as follows:

Businesses that are not included in the mandatory implementation phases may voluntarily adopt the Fawtara framework before their mandatory compliance date, subject to meeting the applicable OTA requirements.

The Oman Tax Authority (OTA) has adopted a Peppol-based five-corner model for E-invoicing. The framework enables secure invoice exchange between businesses while providing real-time reporting to the OTA.

E-invoicing is currently voluntary in Oman. Mandatory adoption for business-to-business (B2B) transactions will begin in phases from August 2026, with government-related (B2G) requirements expected to follow in 2028.

Businesses are required to retain E-invoicing records for 10 years, comprising: Five years within the e-invoicing system Five additional years in an electronic archive

How we can help

• Compliance advisory
  We help businesses understand Oman Tax Authority e-invoicing requirements, assess the impact on existing finance processes and develop a practical roadmap for compliance. Our team supports VAT and e-invoicing readiness to reduce regulatory risk and support a smooth transition.
• Implementation advisory
  We provide guidance throughout your e-invoicing implementation journey, helping you prepare internal processes, governance and documentation while coordinating with your ERP or accredited service provider. Our advisory helps businesses meet compliance requirements without disrupting operations.
• Vendor selection advisory
  Selecting the right accredited service provider is an important step in the e-invoicing journey. We help evaluate available solutions, assess business requirements, review vendor capabilities and support informed decision-making aligned with your operational and compliance needs.
• Readiness assessment
  Our specialists assess your existing invoicing processes, ERP environment, master data and internal controls to identify gaps before implementation. We provide practical recommendations to help your organisation prepare for Fawtara compliance.
• Training and change management
  Successful adoption requires more than technology. We provide tailored workshops and practical guidance for finance, tax and operational teams to support new processes, responsibilities and regulatory obligations.
• Ongoing compliance support
  As e-invoicing requirements continue to evolve, we provide ongoing advisory to help businesses remain compliant. Our team supports regulatory updates, process reviews, compliance monitoring and continuous improvement following implementation.

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