Fawtara and Oman e-invoicing: what your invoices have to carry

Fawtara is the Oman Tax Authority's name for electronic invoicing. The Authority publishes it as four phases: Phase 1 Pilot with selected large taxpayers, Phase 2 Expansion, Phase 3 SMEs Onboarding, and Phase 4 Full Rollout. Almost everything written about it so far is addressed to the finance director of a company with a hundred staff, which is why a shop owner reading it comes away no wiser about what to do on Monday. Small and medium businesses land in the later phases. Reported dates have differed between sources and the Authority's own portal publishes the phase names without them, so confirm your own wave with the Tax Authority rather than with a software vendor, this one included. One point worth clearing up while you are here: Saudi Arabia's system is called Fatoora and Oman's is called Fawtara. They are separate programmes run by separate authorities, and a guide written for one will mislead you about the other.

A PDF is a picture of an invoice. A structured electronic invoice is the invoice itself, held as fields a machine reads without anyone retyping: the line, its net amount, its tax treatment, its tax amount, the buyer, the number, the date. That is the whole of the difference, and it is why a business cannot become ready by emailing PDFs instead of printing them. Under the five corner model the Authority eventually receives that structured document through an accredited service provider, and the shape of the document is what has to be right first. Everything after it is plumbing that can be added. Nizro was built to produce the structured document and has never produced a scan.

Every line stores its own VAT treatment at the moment it is priced, so one invoice can carry an exempt treatment and a taxable retail line on the same page. An exempt line prints with a dagger in its first cell, the exempt supplies subtotal appears as its own line, and a footer names the ground for the exemption rather than leaving a reader to guess it. The buyer is carried as a full name and an identity number; the seller side, the VAT registration number and the commercial registration number, comes from the branch header. Numbers come from a counter held under a row lock on the top branch, so what you get is a prefix, the selling branch's code and a six digit running value, with no gaps, no duplicates and no possibility of two tills spending the same number at the same second. And the tax on the paper is the tax in the books: a posted sale debits cash or bank at gross, credits sales at net and credits VAT payable at the tax, so the two figures cannot drift apart.

Standard rated, zero rated and exempt are three different things that land in three different boxes on a VAT return, and a great many small business systems treat the last two as the same because both come out at nothing. Nizro holds all three, per category and per business, and records which one applied on each line. The rate itself is a setting on the business, defaulting to 5, and it is stamped onto the order when the order is created. That second part is the useful half: reprint an invoice from two years ago and it shows the rate you charged then, not the rate you charge now. It also means the rate is a number set once against the business rather than a constant buried in the code, so a change of rate is a setting rather than a project.

Once a sale exists, its financial and identity fields refuse to be updated at the database, not merely in the screen. Quantity, unit price, discount, category and the rest raise an error saying the row is immutable once created and telling the user to cancel and issue a new document. Cancellation is not permitted to be silent either: it records a reason from a closed list, along with the figures as they stood at the moment of cancellation. The list is closed rather than free text on purpose, because a reason box that accepts anything is a reason box nobody can report on later. This is the most checkable thing on the page and the easiest test of anything else you are looking at. If a clerk can quietly amend an issued invoice in your current system, that is the finding to take to your accountant this month, well ahead of anything to do with formats or portals.

Nizro is not accredited by the Oman Tax Authority, is not an Access Point, and transmits nothing to the Authority today. An accredited service provider is a defined role in a regulated network and the Authority publishes the list of who holds it. What Nizro does is produce the structured document, ready to hand to an accredited provider when your business is onboarded. Anyone selling small business software as already certified for Fawtara is worth a second question. In the meantime, six questions will tell you where you stand, and not one of them mentions e invoicing. Can somebody edit an invoice after it has been issued? Are your numbers sequential with no gaps, across every branch and every till? Does each line carry its own tax treatment, or does one rate sit on the whole document? When a line is exempt, does the invoice say on what ground? Reprint an invoice from two years ago: does it show the rate you charged then? And can you produce that same invoice in Arabic? Every one of those is what electronic invoicing will eventually ask of you. Nizro answers yes to all six, and you can check it yourself for 60 days without a card.