The UAE five-corner model is the way e-invoices will travel under the national e-invoicing system. The supplier is Corner 1 and sends invoice data to its Accredited Service Provider, Corner 2. That provider passes the invoice to the buyer's provider, Corner 3, which delivers it to the buyer, Corner 4. The Federal Tax Authority is Corner 5 and receives the tax data.
How does an invoice travel through the five corners?
The Ministry of Finance guidelines describe the flow in steps.
| Corner | Who | What it does |
|---|---|---|
| 1 | Supplier (you) | Submits invoice data to its provider in an agreed format |
| 2 | Supplier's Accredited Service Provider | Validates the data, converts it to the UAE XML format if needed, sends it to Corner 3 and reports tax data to Corner 5 |
| 3 | Buyer's Accredited Service Provider | Validates the invoice, confirms to Corner 2, delivers it to the buyer and reports tax data to Corner 5 |
| 4 | Buyer | Receives the invoice |
| 5 | Federal Tax Authority | Receives tax data and sends electronic confirmations to Corners 2 and 3 |
Confirmations then flow back to you and to the buyer through their providers. The Ministry describes the design as decentralised: you do not connect to the FTA directly.
What does Peppol have to do with it?
Peppol is the open standard that lets two providers exchange invoices. The Ministry says businesses can exchange invoices across borders by adopting a proven standard such as OpenPeppol, and the UAE invoice format is called PINT AE. The Ministry's guide for choosing a provider says UAE e-invoicing follows the Peppol framework.
In practice you meet Peppol in one place: your identifier. The guidelines say your Participant Identifier is your Tax Identification Number, which is the first 10 digits of your TRN, and the Peppol identifier is 0235 followed by that 10-digit TIN. Your provider obtains it for you during onboarding. See TRN and EmaraTax, the portal used to onboard.
What does the five-corner model mean for an online seller?
Three things. First, you need an Accredited Service Provider; the model has no route that skips one. Second, the model applies to business transactions, so invoices to retailers, distributors or corporate buyers are in, while supplies to consumers are not, for now. Third, the dates depend on revenue; see the e-invoicing timeline and the provider checklist.
Check this first. This is general information, not tax advice. Confirm your own position with the Ministry of Finance or the Federal Tax Authority.
For the full seller view, read UAE e-invoicing for online sellers.