E-invoicing in Oman (Fawtara): what your business needs to get ready

What Fawtara is, in short

E-invoicing is becoming mandatory in Oman. Fawtara is the Oman Tax Authority's e-invoicing system, and under the timeline as published by the Oman Tax Authority (read on 26 October 2026), every VAT-registered business moves onto it in 2027: from 1 April 2027 if its annual supplies exceed OMR 5,000,000, and from 1 October 2027 for everyone else. From your date, a PDF or a paper invoice no longer does the job it does today.

The Authority defines e-invoicing as issuing, storing, submitting and exchanging invoices electronically through an approved mechanism in a prescribed format, and its Fawtara FAQ document is blunt about the difference: "A PDF invoice is not an e-invoice." You may still print paper invoices, but once the mandate applies to you, only e-invoices count as valid invoices for tax purposes. The legal basis the Authority names is Decision 189/2026, which amends the Executive Regulation of the VAT Law.

Who must comply, and from when

The Authority's FAQ document, updated 30 September 2026, sets each business's date by the value of its annual supplies:

• 1 April 2027 if your supplies from 1 April 2026 to 31 March 2027 exceed OMR 5,000,000, or if the supplies you expect from 1 April 2027 to 31 March 2028 exceed that figure. Either test is enough.
• 1 October 2027 for VAT-registered businesses that meet neither test.

The supplies that count are your taxable supplies (excluding sales of capital assets), goods and services under the reverse charge mechanism, and your intra-GCC supplies. A VAT group is measured as a group, not member by member, and a non-resident counts only the supplies it makes in Oman. The Authority says there are no industry exceptions. A seller that is not registered for VAT is not required to join the Fawtara network.

The Authority's potential rollout checking page gives an indicative date once you enter your VAT number and choose your supplies band, and it states that it is for awareness and readiness only. One caution: the Authority's e-invoicing FAQ page still shows an older four-phase plan with different months. The 30 September document and the rollout checker are newer and agree with each other, so we use them. Dates like these can move, so check again before you plan around one.

You do not have to wait for your date. The Authority encourages businesses to test their systems and start issuing e-invoices early, and to take part in its pilot.

How an e-invoice reaches the Tax Authority

Oman uses what the Authority's e-invoicing page calls a 5-corner model:

1. Your business, the supplier, issues the invoice.
2. Your accredited service provider validates it against Oman's rules.
3. It is exchanged with your customer's service provider.
4. Your customer receives the invoice data.
5. At the same time, the tax data goes to the Tax Authority.

The service providers are Peppol Access Points accredited by the Authority, and the invoice travels as structured XML that follows the PINT OM specification published by OpenPeppol. Business-to-business invoices are reported in real time and business-to-consumer invoices within 24 hours, and both start on the same date. When the buyer is a consumer, or not yet part of the rollout, your provider still sends the tax data to the Authority, and you hand over the invoice the way you do today. For an export, the invoice goes from you to your provider and on to the Authority.

According to the FAQ, the QR code is generated by the taxpayer and goes on the human-readable copy of the invoice, not inside the e-invoice itself. It is mandatory for consumer sales and for any buyer who is not registered for VAT.

You connect to one accredited service provider at a time, through the Fawtara portal, where the Authority says its list of accredited providers is kept, and you can switch later. The Authority charges no fee of its own; each provider sets its own prices. A company can apply to become its own service provider, but the accreditation criteria are demanding: a mainland commercial registration, paid-up capital of at least OMR 6,000 and ISO/IEC 27001 certification among them, plus Peppol testing. Whichever route you take, responsibility for a compliant invoice stays with you.

What to check in the system your invoices come from

Most of the work sits in the software that produces your invoices today: an ERP, an accounting package, a point-of-sale system or something built for you. The Authority says an existing ERP can be kept, depending on your arrangement with your service provider, and that it has to be mapped against the Oman PINT specification. That mapping is where the gaps show:

• Structured data. Can the system produce each invoice as complete structured data with every mandatory field, or can it only print a document?
• Customer VAT numbers. Whether an invoice is treated as B2B or B2C, and whether it needs a QR code, depends on the buyer's VAT status, so customer records need correct VAT numbers. The Authority's tax data validation page checks one. If an invoice goes to the wrong buyer or VAT number, the fix is a credit note and a new invoice.
• Credit and debit notes. Once issued, an invoice is adjusted only by an electronic credit or debit note. If your users can edit or delete an issued invoice today, that has to change.
• Timing. E-invoices follow the VAT rules on date of supply and issue, and B2B reporting is real time. Asked about invoices written by hand and typed in later, the Authority answers that only invoices issued to the Oman e-invoicing specification are valid.
• Imports and reverse charge. Imports of goods and services, and reverse charge purchases, need self-billed e-invoices, and for imports the Authority's service providers FAQ says you report the Bayan number.
• Printed copies. Consumer receipts and invoices to unregistered buyers need the QR code printed on them.
• Archiving. Storing your e-invoices is your duty; the Authority will not supply copies.
• Who maintains the software. If the vendor has gone, or the system was built in-house years ago, someone has to make these changes and connect it to your provider, and the Authority notes that each provider defines its own way of linking.

Practical steps to get ready

1. Confirm your date: work out your annual supplies the way the FAQ describes, then run your VAT number through the rollout checker.
2. List every place an invoice comes from: the head office ERP, branch systems, point of sale, a billing tool, spreadsheets.
3. Ask whoever maintains each system to map its invoice data against PINT OM and write down the gaps.
4. Clean your customer records, starting with VAT numbers.
5. Shortlist accredited service providers on the Fawtara portal, and ask each how it connects to a system like yours and what it charges.
6. Close the gaps: credit and debit notes, self-billing, QR codes on printed copies, archiving.
7. Test with your chosen provider well before your date. The Authority's recorded awareness sessions help the team doing the work.

The Authority says penalties will apply under the VAT legislation once the mandate begins, so a late start carries a real cost.

Where custom software fits

If your invoices come from a packaged product, much of this work sits with its vendor. If they come from software built for you, or a system you run and maintain yourself, the changes fall to you or whoever maintains it, and the first step is a review of what Fawtara changes in it. That review is the kind of work our custom software and ERP service covers: we look at how an invoice is created today, set it against the checklist above, and scope any changes with you.

When the question is wider than one system, such as which systems to keep, how branches feed head office, or what to ask providers before you sign, it is a matter for IT consulting. And if the review shows that an old system cannot carry the change, that is the point to weigh custom software vs off-the-shelf properly, with replacing the invoicing part through custom software and ERP as one option among several.

To be clear about our part: BudTech is not an accredited service provider. Your accredited provider validates each invoice against the Authority's rules, and the responsibility for compliance stays with your business. What we can do is review the software you own against what Fawtara and your provider ask for, and scope with you what it takes to close the gaps.