UAE E-Invoicing, What Your Company Must Do and By When

If your revenue is below AED 50 million, you have until 31 March 2027 to appoint, and until 1 July 2027 to go live.

Those dates come from Ministerial Decision No. 244 of 2025, as amended by Ministerial Decision No. 66 of 2026.

What e-invoicing actually changes

Today you raise an invoice in your accounting system, export a PDF, and email it to your customer.

From your go-live date that stops. The invoice is created in a set electronic format and passed to an accredited service provider. That provider sends it to your customer's provider, who delivers it to your customer. At the same time, the tax data on that invoice goes to the Federal Tax Authority.

The Ministry calls this the 5 corner model. You, your provider, your customer's provider, your customer, and the FTA.

Your customer still receives an invoice. It still shows the same commercial information. What changes is how it travels, and the fact that the FTA sees the tax data as it goes.

Who is in scope

Any person conducting business in the UAE, whether or not they are registered for VAT.

That last part catches people out. Companies below the VAT threshold assume this does not reach them. It does. The only general carve out is in Article 4 of Ministerial Decision No. 243 of 2025.

Business to consumer transactions are outside the system for now. Article 5 of Ministerial Decision No. 244 of 2025 excludes them until the Minister decides otherwise. A business dealing only with consumers is not in scope yet.

What your company needs to do

1. Work out which phase you fall into. Take your annual revenue and compare it to AED 50 million.
2. Find your Tax Identification Number. It is the first 10 digits of your TRN. This becomes your identifier on the network.
3. If you are in scope but hold no TRN, register with the FTA to obtain a TIN. You cannot be onboarded without one.
4. If you are in a tax group, use the first 10 digits of your own TRN, not the group representative's. Companies get this wrong.
5. Appoint an accredited service provider before your deadline. Only providers on the Ministry's central register may supply the service. Ministerial Decision No. 64 of 2025 makes accreditation a condition of operating.
6. Check that your accounting system can produce every mandatory field. Some systems cannot without an update or a connector.
7. Clean your customer and supplier master data. Missing tax numbers, wrong legal names, and blank addresses are what stop invoices going through.
8. Test during the voluntary phase. You can onboard early and exchange live invoices without penalty exposure. Use it.

The dates

One warning on dates. The UAE Electronic Invoicing Guidelines version 1.1, published 1 June 2026, still show 31 July 2026 as the first appointment deadline. That date was replaced by Ministerial Decision No. 66 of 2026. The correct date is 30 October 2026. If you are working from the guidelines table, you are working from a superseded figure.

Penalties for breaching the e-invoicing rules are set out in Cabinet Decision No. 106 of 2025.

It is simpler than it sounds

Most of what has been written about this makes it sound like a systems project. For the majority of UAE companies it is not.

You are not building anything. The accredited provider does the exchanging, the formatting, and the reporting to the FTA. That is what they are accredited to do.

Your invoice does not change commercially. Same customer, same amount, same terms.

Your accounting system probably already connects. The mainstream cloud packages have been preparing for this. In many cases it is a setting and a connection, not a migration.

The real work is data, not software. It is making sure every customer record has a correct tax number and legal name, and that your invoice template carries every mandatory field. That is a bookkeeping exercise. It is exactly the work an accountant should be doing anyway.

Two smaller points worth knowing. HSN codes are optional at present, and the Ministry will announce separately when that changes. And you cannot invent your own extra fields. The format is fixed, so any special requirement has to be handled through your provider.

How CALX helps

We do four things.

1. Scoping. We confirm which phase you are in, check your TIN position, and tell you your exact deadline in writing.
2. Data readiness. We review your customer and supplier master data and your invoice template against the mandatory field list, then fix what is missing.
3. Connection. We link your accounting system into our own infrastructure, which is already running, and test it with you during the voluntary phase so nothing breaks on your live date.
4. Ongoing checks. Once you are live, we reconcile what was reported against what was invoiced, as part of your normal bookkeeping or VAT work.

Our infrastructure is already connected

We are not starting from scratch when you call us.

CALX runs its own accounting and reporting infrastructure, and it is already linked. Built, tested, running.

We assess your position, connect your ledger into our system, and handle the FTA side. You keep QuickBooks, Zoho, Odoo, or whatever ERP you run today.

You are not paying for a first-time build, and you are not waiting on one either. That counts when the deadline is fixed.

For most clients this is a short engagement, not a project.

What to do now

If your revenue is at or above AED 50 million, 30 October 2026 is close. Start with the data review, because that is the part that takes time.

If you are below the threshold, you have until 31 March 2027. Use the voluntary phase rather than waiting for the deadline.

Send us your last full year revenue figure and your TRN, and we will confirm your phase and your deadline.