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Oman technical discussion

Technical·7 January 2026·1 reply·Reply

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Jordan T.7 January 2026
Fawtara Program: Technical Standards and 4-Phase Timeline Confirmed
Updated Oman e-invoicing country data with confirmed technical standards (XML, PDF/A-3), 5-corner model architecture, and detailed 4-phase rollout timeline from OTA official sources.
Phase 1 pilot with 100 large VAT-registered companies begins August 2026.
Jordan T.7 January 2026
Link to update Oman einvoicing page: https://www.e-invoice.app/country/OM

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Oman at a glance

B2B:
Phased
B2G:
Phased
B2C:
Phased

Next: Apr 2027, Mandatory above OMR 5 million in annual supplies

Full country dataOman e-invoicing guide
Latest Update
New Mandate
9 Aug 2026

Decision No. 189/2026 Sets Legal E-Invoicing Dates of April and October 2027

Oman's Tax Authority issued Decision No. 189/2026 on 9 August 2026, amending the Executive Regulations of the VAT Law. The replaced Article 143 requires the tax invoice to be issued, sent and stored in an approved, secured electronic format with a unique number for each invoice, covering supplies including those to persons not subject to tax, deemed supplies and consideration received before the supply date. Invoices carry XML and pass between seller and buyer systems through accredited service providers; paper invoices, PDFs and emailed images of invoices no longer qualify. New Articles 143bis, 143bis1 and 143bis2 add the licensed provider list, the taxpayer's system security duties and a discretionary exemption granted by the Chairman. The obligation starts on 1 April 2027 for taxpayers with annual supplies above OMR 5 million and on 1 October 2027 for those at or below, preceded by a pilot of 100 companies from August 2026. These dates supersede the four-phase August 2026, February 2027 and August 2027 schedule the Tax Authority still publishes on its e-invoicing FAQ.

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