OTA e-Invoicing Ready

Oman Easiest e-Invoicing
for Businesses

Fully compliant with Oman Tax Authority requirements.Seamless integration, Arabic & English support, and reliable local implementation services.


★★★★★

Trusted Globally. Now Serving OMAN Businesses.

Oman Tax Authority – Compliant e-Invoicing Coming Soon

Effortless

Simplify your invoicing journey with smooth enablement in minutes.

Scalable

From 1 invoice to 100,000 generate invoices at scale.

ERP Agnostic

Integrates with global and local ERPs, including Arabic/English platforms.

Secure

Data hosted in OMAN, secure and encrypted end-to-end.

Compliant

OTA sandbox + production ready with full compliance

Efficient

99.9% approval rate with sub-second API response.

Oman e-Invoicing Timelines Announced

Initial Rollouts

Large Taxpayers and Medium & Large Companies

Selected Large Taxpayers

Q3 2026

Applies to the selected large taxpayers by OTA for B2B, B2C & B2G. These businesses must issue/receive elnvoices via Fatwara invoices.

Medium & Large Companies

Q1 2027

Applies to all large taxpayers for B2B, B2C & B2G and to businesses that sign up voluntarily

SME Onboarding

Q3 2027

Applies to all taxpayers for B2B, B2C & B2G including small & medium enterprise.

Full Rollout

Q1 2028

Applies to all taxpayers for B2B, B2C, B2G & G2B. Full enforcement across industries. No specific
exemptions.

Later Rollouts

SME Onboarding and Full Rollout

Prepare Navigating Your e-Invoicing Journey

Accurate Master Data

Is foundation for accurate e-invoice generation

Simple Upstream Processes

Simplify order to cash process for accurate e-invoice generation

Effective Change Management

Excel at org-level change management to smoothen e-invoice adoption

We Deliver Exceptional Value to Global Business 

In collaboration with AJMS Global, Marmin is redefining e-invoicing and compliance for businesses in Oman— building on our legacy of trusted partnerships with leading global and home-grown enterprises. Our focus remains on empowering organizations to achieve continuous regulatory compliance, enhance operational efficiency for their users, and stay ahead of the evolving technology landscape.

Frequently Asked Questions

Is Mainland Oman treated as a Special Zone in invoices for Special Zone supplies
Mainland Oman may appear in Special Zone lists, but it is not treated as a Special Zone. Both Seller and Buyer subdivision codes become mandatory for Special Zone invoices according to BR-OM-151 and BR- OM-152.
Can the ISO/IEC 27001 Certification of the parent company cover the Oman entity?
No, the certificate must cover the Oman company specifically. You should get confirmation.
What file format and specifications are required for submitting elnvoices to OTA?
The required format is XML. File size limits and line-item constraints will be detailed in OTA’s technical specifications and implementation guides. No maximum limit online items is enforced.
What supporting documents are required for re export of goods, and what is the UUI?
Supplier must provide the invoice number of the elnvoice issued at import and the UUID of that elnvoice. UUID uniquely identifies the elnvoice and can be obtained from the original import elnvoice.
Is it possible to issue elnvoices or PDF invoices in English only, or is Arabic also required?
After e-Invoicing implementation, the only valid invoice is the elnvoice. PDF invoices, regardless of language, are not considered valid tax invoices. Current VAT legislation on language must be followed.

Contact Us For Your e-Invoicing Journey

Exciting e-Invoicing Times Ahead

Book a Free Consultation

Our Team

Dr. Abhishek Jajoo

Founder & Executive Chairman

Sangmesh Hiremath

Co-Founder & CEO

Murtuza Furniturewala

Co-Founder & COO