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Oman eInvoicing timeline
Decision 189/2026 sets two mandatory implementation dates. Source: Decision 189/2026, Article 3.
The platform
The KGRN eInvoicing solution connects your ERP or accounting software to our ASP middleware application, so invoice data moves securely and accurately with less manual work.
Connect your ERP or accounting platform to the ASP middleware using secure API authentication and standardised data schemas.
Map your existing data structures to the required schemas, and create the mandatory fields within or outside your ERP.
Validate data flow and synchronisation so the information exchanged between your systems stays accurate and consistent.
Invoice scenarios, including exports, imports, advances and adjustments where applicable, are reviewed for VAT treatment before go-live.
Configure users, permissions, system parameters and operational settings around the way your finance team works.
Test in a pilot environment, resolve configuration issues in user acceptance testing and complete production readiness checks before launch.
How it works
Fawtara is Oman’s electronic invoicing system. It connects businesses, accredited service providers and the Oman Tax Authority through a five-corner model.
Electronic invoice exchange takes place through service providers, with tax data also reported to OTA. The KGRN solution prepares and validates your invoice data before it enters that flow.
A PDF sent by email alone does not meet the structured eInvoicing requirement.
Sources: OTA eInvoicing overview and OTA eInvoicing FAQ.
Source: OpenPeppol Oman specifications.
Implementation journey
Five stages take your eInvoicing solution from first connection to day-to-day operation.
KGRN value adds
eInvoicing works best on clean, reconciled data. These value-added services come from the same KGRN team.
Match the VAT in your books with your invoices and returns, and resolve the differences.
Complete and correct customer, supplier and invoice master data before it flows into eInvoicing.
Match purchase orders with supplier invoices to catch mismatches early.
Prepare and file VAT returns using the same data your eInvoicing solution produces.
Why KGRN
An eInvoicing solution needs to account for the way your business actually invoices. KGRN brings the platform, the integration work and the tax expertise together.
VAT treatment and system setup are reviewed together, not handed between vendors.
The solution connects to your current ERP or accounting software instead of replacing it.
API token authentication and standardised schemas protect accuracy and reliability.
Pilot environments, UAT and production readiness checks come before launch.
VAT reconciliation, data cleaning and VAT filing from the same team.
Move from Standard Support to Extended or Managed Services as you need.
Every engagement defines what KGRN delivers, what your team owns and the role of your ERP partner.
Built on KGRN’s eInvoicing work in the UAE, now extending to Oman.
Free demo
Tell us how your business invoices today. We will show how the solution handles your data, your invoice scenarios and the Fawtara flow.
A clear view of how the solution fits your systems, and the next steps to go live.
FAQ
Not necessarily. The KGRN solution connects to your existing ERP or accounting software through secure API integration. Retention depends on your system’s capabilities and the arrangement with your accredited ASP.
The April date applies if qualifying supplies exceed OMR 5 million in either 1 April 2026–31 March 2027 or the expected period 1 April 2027–31 March 2028. Include taxable supplies excluding capital assets, reverse-charge supplies and intra-GCC supplies. Assess VAT groups collectively. Non-residents count Oman supplies only. If neither test is met, the October date applies. Source: OTA September 2026 FAQ, section 3.1.
OTA specifies real-time B2B submission and B2C submission within 24 hours.
The taxpayer remains responsible, including when using an accredited ASP.
Adjustments use electronic credit or debit notes.
OTA states that VAT legislation penalties apply after the mandate begins.
KGRN’s Oman ASP approval is pending. Accredited ASP services will be offered only after approval.
Yes. You can book a demo and begin preparing your invoice data, mapping and system requirements now. Any regulated ASP service must follow the applicable accreditation requirements.
The demo is free. Pricing depends on your entities, systems, invoice flows and support plan. You receive a proposal before any paid work begins.
See how the KGRN eInvoicing solution handles your invoice data before your implementation date.
Book a Free DemoA focused demo. Clear next steps. No obligation.
