PINT Oman E-Invoicing Specification: 2026 Compliance Guide

PINT Oman E-Invoicing Specification: What Businesses Need to Know in 2026

PINT Oman E-Invoicing Specification: What Businesses Need to Know in 2026

With Phase 1 of Oman's e-invoicing mandate beginning August 2026, businesses have a narrowing window to get compliant. All electronic invoices must be issued through OTA-accredited service providers connected to the Peppol network, as direct submission to the OTA is not permitted. The PINT Oman specification, published in draft form in April 2026, defines the data structures, validation rules, and exchange processes that every invoice must comply with.

This blog covers everything you need to know about PINT Oman and what your business must have in place before the deadline.

What is the PINT Oman Specification?

The PINT Oman specification is a national customisation of the global Peppol International (PINT) framework, adapted to meet Oman's legal mandates and business requirements. It defines the data structures, validation rules, and exchange processes that apply to all electronic invoice transactions in Oman. It also sets out how invoice information must be reported to the Oman Tax Authority (OTA).

The specification covers three processes:

• PINT OM Billing: defines the PINT framework for standard Tax Invoice and Credit Note transactions between suppliers and buyers
  
   
• PINT OM Self-Billing: defines the PINT framework for Self-Billing Invoice and Self-Billing Credit Note transactions, where the buyer issues the invoice on behalf of the supplier
  
   
• Oman Tax Data Document (TDD): defines the structure used for reporting invoice information directly to the OTA for tax reporting and compliance purposes
  
   

Oman's Phased Implementation Timeline

The OTA has confirmed the following rollout schedule:

Phase	Date	Scope
Phase 1	August 2026	Large taxpayers selected by OTA
Phase 2	February 2027	All remaining large taxpayers
Phase 3	August 2027	All remaining VAT-registered businesses including SMEs

Businesses in each phase must issue and receive invoices through an OTA-accredited service provider connected to the Fawtara platform before their applicable deadline. Full ERP integration and UAT testing typically takes 8 to 14 weeks. Businesses that delay service provider selection will be under real pressure to meet their phase deadline.

The 5-Corner Model: Why Direct Submission is Not Permitted

Oman has adopted the Peppol 5-Corner Model for its national e-invoicing framework. Under this model, every invoice must pass through five defined corners before it is accepted as compliant by the OTA.

• Corner 1 — the supplier's ERP or finance system, where the invoice originates
  
   
• Corner 2 — the supplier's OTA-accredited Peppol Access Point, which validates and transmits the invoice
  
   
• Corner 3 — the buyer's OTA-accredited Peppol Access Point, which receives the invoice
  
   
• Corner 4 — the buyer's ERP or finance system, where the invoice is delivered and processed
  
   
• Corner 5 — the OTA, which receives every invoice through the Tax Data Document (TDD) for real-time tax reporting

Both the supplier and buyer must be connected to an OTA-accredited Peppol Access Point. Invoices delivered outside the Peppol network will not meet compliance requirements under the Fawtara mandate. This currently applies to all B2B and B2G transactions within scope of the mandate, with B2C transactions expected to be included in a later phase. 

Document Types Supported Under PINT Oman

The PINT Oman specification supports four document types:

Document Type	Code	Description
Tax Invoice	380	Standard commercial invoice
Credit Note	381	Credit note issued by supplier
Self-Billing Invoice	389	Invoice issued by buyer on behalf of supplier
Self-Billing Credit Note	261	Credit note issued under a self-billing arrangement

Transaction Type Model: How Validation is Governed

The transaction type (BTOM-001) is the central mechanism that drives all validation in PINT Oman. It determines which fields are mandatory, which combinations are permitted, how VAT is applied, and which scenario-specific rules apply to each invoice. Every invoice must identify its base type as either a Full Tax Invoice or a Simplified Invoice. Additional subtypes are applied depending on the business scenario.

Supported transaction subtypes include Self-Billed, Third Party, Summary, Continuous Supply, Export, Deemed Supply, Import Reverse Charge, Profit Margin, E-Commerce, Import of Goods, Special Zone, and Prepayment.

Some combinations are explicitly invalid and will be rejected during validation. The following combinations have been identified in the draft specification and are subject to finalisation: 

Invalid Combination	Status
Self-Billed + Third Party	Not allowed
Self-Billed + Export	Not allowed
Summary + Continuous Supply	Not allowed
Export + Import Reverse Charge	Not allowed
Import of Goods + E-Commerce	Not allowed

VAT Rules Under PINT Oman

Oman's standard VAT rate is 5%. The specification defines four  VAT categories:

Code	Description	VAT Amount Rule
S	Standard rated	VAT must be calculated at exactly 5%
E	Exempt	VAT must be zero
O	Outside scope	VAT must be zero
Z	Zero rated	VAT must be zero, but the supply remains taxable

A VAT breakdown must be provided for each VAT category used across invoice lines, document-level allowances, and document-level charges. For simplified invoices, VAT breakdowns for categories E and O may be omitted. Exactly one VAT breakdown must exist per distinct VAT rate for standard-rated invoices. 

Currency and Exchange Rate Requirements

Oman's VAT reporting currency is OMR, and when an invoice is issued in a foreign currency, the following rules apply: 

• The tax currency must be stated as OMR
  
   
• An exchange rate must be provided
  
   
• VAT must be reported in both the invoice currency and OMR
  
   
• The converted VAT amount must satisfy: VAT (OMR) approximately equals Exchange Rate multiplied by VAT (Invoice Currency)
  
   

Conditional Mandatory Fields by Transaction Type

Different transaction types trigger different mandatory data requirements, and businesses must configure their systems to capture and include the correct fields for each applicable scenario. The following reflects the draft specification and is subject to finalisation: 

Scenario	Required Data
Export	Delivery country, export evidence
Import of Goods	Import date, customs declaration number, Incoterms
Summary Invoice	Invoice period within the same calendar month
Continuous Supply	Invoice period
Third Party	Agent party name, VAT ID, address, country
Prepayment	Prepaid amount, reference to original invoice
Special Zone	Subdivision code, license ID

E-Invoicing Compliance Requirements for Oman 

Before the applicable deadline, the following must be in place for businesses within Oman's phased rollout:

• An OTA-accredited service provider appointed, operating as a certified Peppol Access Point
  
   
• ERP systems capable of generating structured XML invoices in PINT-OM format
  
   
• Invoice data mapped to the PINT Oman semantic model, including all mandatory fields
  
   
• Transaction type codes correctly configured for each invoice scenario the business operates under
  
   
• Multi-currency invoicing configured with exchange rate and dual VAT reporting where applicable
  
   
• Electronic invoice archiving in place for the required retention period
  
   

Conclusion

With Phase 1 of Oman's e-invoicing mandate beginning August 2026 and expanding progressively through 2027, the window for preparation is narrowing. Full ERP integration and testing typically takes between 8 and 14 weeks, meaning businesses need to act now to meet their applicable deadline. 

Appointing an OTA-accredited service provider early gives businesses the time needed to complete integration, testing, and onboarding without the pressure of an approaching deadline. To get started, contact Flick Network at sales@flick.network. 

FAQs

1. What is the PINT Oman specification? 
    It is the Peppol International (PINT) framework customised for Oman, defining the data structures, validation rules, and exchange processes for all electronic invoices and tax reporting in Oman.
   
    
2. When does the Oman e-invoicing mandate start? 
    Phase 1 begins August 2026 for large taxpayers selected by the OTA. Phase 2 covers all remaining large taxpayers from February 2027. Phase 3 covers all remaining VAT-registered businesses from August 2027.
   
    
3. Can businesses submit invoices directly to the OTA? 
    No. All invoices must be routed through an OTA-accredited service provider operating as a certified Peppol Access Point.
   
    
4. What VAT rate applies under PINT Oman? 
    The standard rate is 5%, applied under category S. Exempt (E), Outside Scope (O), and Zero Rated (Z) categories must carry zero VAT.
   
    
5. What document types does PINT Oman support? 
    PINT Oman supports Tax Invoices (380), Credit Notes (381), Self-Billing Invoices (389), and Self-Billing Credit Notes (261).