E-invoicing for shops in Oman: what changes on an invoice to an individual?

Decision No. 189/2026, published in the Official Gazette (No. 1660, 9 August 2026), sets two dates. The first is 1 April 2027 for taxable persons whose annual supplies exceed OMR 5 million. The second is 1 October 2027 for every other VAT registered business, which is where most shops sit. A pilot with around 100 large taxpayers began in August 2026. If your date is 1 October 2027, you are not late.

An electronic invoice is not a picture sent on WhatsApp. It is data in fields a computer reads: the seller, the buyer, the items, the tax on each line, the document number and date. In Nizro every invoice carries tax worked out on each line and a sequential number that never repeats, and its amount, lines and prices cannot be changed after issue. It prints in Arabic or English.

The customer is optional at the till, so a sale with no customer is recorded to a walk-in. If you attach a customer, the sale does not close until his phone number is recorded or his refusal is, because the invoice is sent on WhatsApp as a link he opens on his phone with no account and no app. A recorded refusal is an answer, so your colleagues do not ask him again on every visit, but silence is not an answer. A new customer is added from the sale screen with a name and a phone or ID number.

With auto simplify on, sales whose total before tax is below a limit you set print as a simplified tax invoice. It drops the optional buyer fields and always keeps the full name and ID number. If the branch has a VAT number, every invoice carries a QR code holding the seller's name, VAT number, time, total and tax amount. The code is worked out locally at print time and is encoded text, not a link. Check how e-invoicing will treat it at your date with the Tax Authority, because Nizro transmits nothing to it today.

A return never edits the original invoice. A credit note is created with its own number and the invoice stays as issued. The credit note has a printed customer copy that names the original invoice, the reason and the amount refunded, and it can be sent on WhatsApp. Cancelling the invoice itself belongs to a manager alone, needs a written reason of at least three letters or digits, and the reason stays on the document.

Open the last 10 invoices you issued and ask: is the tax recorded on each line? Are the numbers sequential, and is the reason for every cancellation on record? Is an invoice issued last week locked, so that its amount and prices cannot change? Does an exempt line show its ground? Can you produce the same invoice in Arabic? Nizro answers yes to these today. But Nizro is not an accredited service provider or an Access Point, and it does not send any invoice to the Tax Authority. It is built to connect to Fawtara through an accredited service provider when your business is onboarded.