Oman's e-invoicing dates are now set in law: 1 April and 1 October 2027. Read our guide. Read the guide
Plain-language guides, articles and answers on Oman's e-invoicing programme, VAT and Peppol, each checked against official sources and dated.
Practical knowledge for finance teams, accountants and developers preparing for Oman's 2027 e-invoicing dates. Regulatory pages cite their official sources and show when they were last reviewed.
E-invoicing
Decision 189/2026 has the Oman Tax Authority announce the companies licensed to provide e-invoicing services and places security and continuity duties on you. This guide turns tha…
Integration
There is no single right way to connect your systems to e-invoicing. This guide compares the three main routes, a REST API, file transfer through a connector, and spreadsheet impo…
VAT
A VAT return is only as reliable as the review behind it. This guide sets out a maker/checker method for Omani VAT return figures: what the preparer does, what the reviewer tests,…
E-invoicing
A working checklist for finance and IT teams preparing for mandatory e-invoicing in Oman. It follows the order most projects run in: governance, scope and dates, data, systems, pr…
Integration
Structured e-invoices expose every gap in the data behind them. Before you connect an ERP, review the party, item, tax and reference data it holds. This article sets out what to c…
E-invoicing
In self-billing, the buyer issues the invoice on the supplier's behalf. It suits relationships where the buyer holds the data that determines the price. This article explains the …
E-invoicing
Once invoices become structured data, you can no longer fix a mistake by editing a PDF. Credit and debit notes become the only clean way to correct what was invoiced. This article…
Compliance updates
Decision 189/2026 sets two mandatory e-invoicing dates in Oman: 1 April 2027 for taxable persons with annual supplies above OMR 5 million and 1 October 2027 for everyone else. Her…
Knowledge centre
Who must e-invoice and when, the five-corner model, document types and how to prepare.
Read the guide: Oman e-invoicing guideOman VAT basics: the 5% rate, registration, tax invoices, credit and debit notes and returns.
VAT basics: VAT knowledge centreHow PINT-OM, access points and the Tax Data Document fit together.
About Peppol: Peppol in OmanShort answers on dates, formats, integration, security and pricing.
Read the FAQ: Frequently asked questionsChecklists and how-tos for readiness, VAT review and integration choices.
All guides: Step-by-step guidesArticles on regulatory changes and finance operations in an e-invoicing world.
Read the blog: BlogNew
E-invoicing
Decision 189/2026 has the Oman Tax Authority announce the companies licensed to provide e-invoicing services and places security and continuity duties on you. This guide turns tha…
Integration
There is no single right way to connect your systems to e-invoicing. This guide compares the three main routes, a REST API, file transfer through a connector, and spreadsheet impo…
Integration
Structured e-invoices expose every gap in the data behind them. Before you connect an ERP, review the party, item, tax and reference data it holds. This article sets out what to c…
E-invoicing
In self-billing, the buyer issues the invoice on the supplier's behalf. It suits relationships where the buyer holds the data that determines the price. This article explains the …
VAT
A VAT return is only as reliable as the review behind it. This guide sets out a maker/checker method for Omani VAT return figures: what the preparer does, what the reviewer tests,…
E-invoicing
Once invoices become structured data, you can no longer fix a mistake by editing a PDF. Credit and debit notes become the only clean way to correct what was invoiced. This article…
A demo shows the validation, document types and VAT review on scenarios like yours.
