Glossary

The Peppol connection point through which invoices are exchanged

An e-invoicing architecture where invoices must be submitted to (and approved by) the tax authority before they can be sent to the buyer. KSA Phase 2 and India's IRP follow this model.

ZATCA must validate and stamp B2B invoices before they are legally valid

An umbrella term for tax-authority systems that monitor invoices in (near) real time — including clearance, real-time reporting, and SAF-T-style periodic feeds.

ZATCA-issued digital stamp applied during clearance to authenticate B2B invoices

UAE's unique 5-corner e-invoicing architecture adding a central platform to Peppol's 4-corner model

OTA decision making e-invoicing binding and setting the commencement dates

Saudi Arabia's national e-invoicing programme — Arabic: فاتورة — meaning invoice

Oman's national e-invoicing programme, Peppol-based, phased from 2026

UAE's national e-invoicing programme — DCTCE model framework and mandate timeline

Saudi Arabia's national e-invoicing platform, operated by ZATCA, through which all B2B and B2C electronic invoices must be issued or cleared.

ZATCA's official e-invoicing portal for onboarding simulation testing and compliance

KSA e-invoice format based on UBL 2.1 XML — mandatory structured format for ZATCA

The OTA's e-invoicing system, Arabic for invoice, what the mandate is called

OTA platform for ASP registration, accreditation and rollout information

OTA tool to confirm which rollout phase a taxpayer falls into via VATIN

Supplier, supplier ASP, buyer ASP, buyer and OTA in one exchange flow

UAE government body responsible for VAT administration and e-invoicing oversight

UAE's online tax management platform for VAT registration returns and compliance

A 15-character alphanumeric identifier assigned to every GST-registered taxpayer in India, used on all tax invoices and GST returns.

A 64-character hash returned by India's Invoice Registration Portal that uniquely identifies a B2B invoice — without it, the invoice is not legally valid.

The Inland Revenue Board of Malaysia's national e-invoicing portal, through which taxpayers submit invoices for clearance before issuing them to buyers.

Pilot and phased waves by taxpayer size, through to government entities

The body running VAT administration and the Fawtara mandate

OTA taxpayer portal for VAT registration, filing and account access

Pan-European Public Procurement On-Line — an open, four-corner network for exchanging electronic invoices across borders, now adopted as the basis of mandates in the EU, Singapore, Australia, Malaysia, and others.

OTA's role as Peppol Authority governing Oman's national rules

UAE's adoption of Peppol network infrastructure as basis for its e-invoicing framework

UAE-specific Peppol International (PINT) invoice specification built on EN 16931

Oman's Peppol International invoice specification for Fawtara invoices

Spec for buyer-issued invoices, relevant to imports and reverse charge

An e-invoicing architecture where invoices are exchanged directly between buyer and seller and reviewed by the tax authority only retrospectively, typically through audits or periodic reporting.

A 2D barcode embedded in tax invoices encoding key invoice metadata (seller, VAT number, totals, timestamp). Mandatory in KSA Phase 1 and on simplified UAE invoices.

TLV-encoded QR code mandatory on all KSA e-invoices containing key invoice data

B2C invoices reported to ZATCA within 24 hours of issuance — no pre-clearance required

A VAT mechanism that shifts the obligation to account for tax from the supplier to the buyer — common in cross-border B2B services.

Oman's VAT Law, the primary legislation the e-invoicing obligation sits under

Reduced-field invoice for B2C transactions — requires QR code but fewer buyer details

A short-form tax invoice permitted for B2C transactions below a jurisdictional threshold — typically requiring fewer fields than a full B2B invoice but still subject to e-invoicing rules.

Reduced-field invoice permitted for transactions under AED 10000 in UAE

Service Metadata Publisher, how participants are discovered on the network

Full-field invoice for B2B and B2G transactions — subject to ZATCA clearance

Tax identification card issued to registered businesses in Oman

A unique 15-digit identifier issued by the UAE Federal Tax Authority to VAT-registered businesses; required on every tax invoice.

Unique 15-digit number assigned to VAT-registered businesses in the UAE

Process of validating a supplier's or buyer's TRN via the FTA portal

Phased rollout making e-invoicing mandatory for UAE businesses — timeline and scope

Right to recover VAT paid on business purchases against VAT collected on sales

FTA examination of a business's VAT records — triggers documentation requirements

Categories of supplies not subject to VAT in UAE — healthcare education financial services

Financial penalties imposed by FTA for late VAT payment or non-compliance

Quarterly or monthly submission of VAT declaration to FTA via EmaraTax portal

Supplies taxed at 0% in UAE — exports international transport certain food items

Universal Business Language — an open-standard XML library for business documents (invoices, orders, despatch advices) maintained by OASIS and used by Peppol.

Universal Business Language XML format as adopted in UAE e-invoicing framework

A consumption tax levied at each stage of the supply chain on the value added to goods or services, ultimately borne by the end consumer.

Document confirming a business's Oman VAT registration status

Official document issued by FTA confirming a business's VAT registration status

15% VAT introduced in 2018 and raised from 5% in 2020 — overview of KSA VAT system

5% VAT introduced in January 2018 — overview of rates exemptions and scope

Validating a counterparty's Oman VAT number before invoicing

Registering for VAT with the OTA, thresholds and process

Process by which a UAE business registers for VAT with the FTA — threshold AED 375,000

Oman VAT identification number, OM prefix, the identifier tied to scope

VAT in the Digital Age — the European Commission's reform package mandating structured e-invoicing and digital reporting for intra-EU B2B transactions, with phased application from 2030.

Zakat, Tax and Customs Authority — the Saudi Arabian government body responsible for VAT collection and the country's mandatory e-invoicing programme (Fatoora).

Saudi Arabia's tax and customs authority responsible for e-invoicing regulation and enforcement

ZATCA-approved technology vendors certified to offer compliant e-invoicing solutions

Technical connection between taxpayer ERP/system and ZATCA's Fatoora platform via REST APIs

Cryptographic Stamp Identifier — certificate issued by ZATCA to authenticate the taxpayer's system

ZATCA's defined XML schema that all e-invoices must conform to before submission

Required data elements on every KSA e-invoice including seller TIN buyer TRN QR code amounts

Process of registering a taxpayer's e-invoicing solution with ZATCA's platform

First phase requiring taxpayers to generate and store structured e-invoices — live Dec 2021

Second phase requiring real-time integration with ZATCA — clearance for B2B reporting for B2C

ZATCA's testing sandbox allowing developers to test e-invoice integration before go-live