The UAE’s e-invoicing pilot opened on 1 July. Nine days in, most finance teams are still working out which Ministerial Decision applies to their revenue band. Few are asking what happens to their invoice data once it starts moving through Peppol.
What the UAE E-Invoicing Mandate Changes
The mechanics are simple enough to state in a couple of sentences. PDF and paper invoices stop counting as valid tax records for B2B and B2G transactions under Ministerial Decisions No. 243 and 244 of 2025, replaced by structured XML in the PINT-AE or UBL 2.1 standard, moved through a Peppol five-corner network via an Accredited Service Provider.
Large businesses, over AED 50 million in revenue, must appoint that ASP by 30 October 2026 and go live by 1 January 2027. Smaller VAT-registered businesses follow by July 2027, government entities by October 2027. That’s the compliance story, and it’s the one getting all the attention.
Your ERP-to-ASP Connection Is a New Security Risk
The real story starts at the point everyone assumes is already handled: the connection between a business’s own systems and the ASP it just hired.
That connection is an API, a set of credentials, a service account with permission to push invoice data out and pull confirmations back. It’s a privileged integration point in exactly the way a database connection string or an admin API key is, and it needs the same handling: credentials that get rotated, permissions scoped to exactly the invoice-push function and nothing broader, every call it makes logged somewhere.
Most ERP-to-ASP integrations are being stood up right now by whichever team drew the short straw on the finance project, not by anyone thinking about it as a privileged connection. If that credential ends up sitting in a config file in a shared repository, or the service account gets more access than it actually needs, the mandate has created a new way into the financial data pipeline that has nothing to do with Peppol’s own security.
Security Risks During the Transition Period
There’s the period nobody plans around, too: the roughly fifteen months between the pilot opening and the last mandatory deadline, when government entities go live in October 2027.
Somewhere in that window, most businesses will be running two invoicing rails at once. Some transactions go out the old way through PDFs and email. Others go through the new ASP connection, structured and automated.
If a supplier’s bank details get updated in the ASP-connected system but not in whatever is still running the old process, or the other way round, there’s no single source of truth to compare the two. That gap is exactly where redirected payment fraud lives.
How Fraud Changes Under Peppol
Peppol’s transport layer itself holds up well. Messages move encrypted, over certified access points, and the network has a solid record against interception. That’s not where this fails.
It fails during onboarding, before a single invoice moves, and how rigorously depends entirely on the access point’s own process. Does it verify a business directly against a government registry, or does it simply accept an uploaded trade licence? Is every registration reviewed by a person, or automatically approved?
Late last December, Belgian IT consultancy SalesBridge and cybersecurity specialist SafeByte described exactly how weak that process can become during Belgium’s rollout. Their analysis showed that a fraudster could register on the Peppol network using another company’s identity if an access point’s onboarding controls were weak enough, allowing fraudulent invoices to appear completely legitimate.
Belgium’s national registration platform had automatically generated Peppol IDs for businesses that were unaware one already existed for them, creating an opportunity for someone else to claim those identities first. That’s a Belgium-specific issue rather than a documented weakness in the UAE’s model, but the underlying attack pattern is relevant anywhere. Once an attacker gains a trusted identity on a Peppol network, they can continue sending properly formatted, correctly routed invoices until someone notices something doesn’t add up.
Automation Removes an Important Manual Check
Once an invoice is XML flowing directly into an ERP, nobody looks at it.
A finance clerk could once glance at a PDF and notice that a bank account was unfamiliar or that a supplier logo looked different. That informal check disappears once invoices become machine-to-machine transactions.
Those human observations now have to become automated controls. Flag a supplier’s first bank account change. Flag an IBAN that doesn’t match the registered company. Highlight invoices that arrive at unusual times or fall well outside a supplier’s normal billing pattern.
None of those controls come with an ASP connection. They have to be built into existing finance systems or implemented through additional security tools, and many organisations budgeting for e-invoicing haven’t budgeted for those controls.
There’s an internal version of the same problem. In many finance departments, one person, or even a shared account, can update supplier banking details without a second approval. That weakness existed before e-invoicing, but automation removes the final manual review that might previously have caught an accidental or malicious change. The question becomes who can modify supplier master data, rather than what the finance policy says on paper.
A Delivery Confirmation Doesn’t Verify the Invoice
Peppol introduces another misconception.
A sender receives confirmation that a message was successfully delivered, but that confirmation only proves the network transferred the document. It doesn’t confirm that the correct organisation received it, that the invoice was processed correctly, or that the payment details were legitimate.
Treating a delivery receipt as proof that everything is correct places more trust in that status than it was ever designed to provide.
Why the Transition Period Creates New Opportunities for Fraud
Expect emails claiming to come from an Accredited Service Provider asking finance teams to “confirm ERP credentials” before onboarding.
The more dangerous version won’t come from a spoofed email domain at all. It’ll arrive from a genuine supplier whose mailbox has already been compromised, continuing an existing conversation and asking customers to redirect future payments to a “new ASP-linked account” because of the move to e-invoicing.
Every email authentication check passes because the message really does come from the supplier’s account. The transition to e-invoicing simply provides attackers with a believable reason for requesting changes that might otherwise attract suspicion.
The financial pressure created by the compliance deadlines makes these attacks even more convincing. Under Cabinet Decision No. 106 of 2025, failing to appoint an ASP or implement e-invoicing by the required deadline carries a penalty of AED 5,000 per month. Non-compliant invoices or credit notes attract AED 100 per document, capped at AED 5,000 per month per category. Failing to report system failures or changes to registered information to the FTA or the ASP carries penalties of AED 1,000 per day.
Choosing an Accredited Service Provider Isn’t Enough
Selecting any provider from the accredited list doesn’t eliminate these risks.
Accreditation requires a provider to be Peppol certified, to have operated its e-invoicing solution for at least two years, and to meet information security requirements set by the Ministry of Finance.
Those requirements assess the technology and the provider’s compliance. They don’t assess how the provider’s support desk handles social engineering attempts, such as someone pretending to be a customer’s finance manager requesting account changes.
As of May, 32 providers had achieved accreditation. Businesses should verify any provider against the Ministry of Finance’s published list and the Peppol Directory rather than relying solely on marketing material or sales presentations.
Your Invoice Archive Becomes a Valuable Target
Every invoice and credit note must now be retained for years under the Tax Procedures Law.
Over time, businesses will accumulate a structured, machine-readable archive containing every supplier relationship, customer relationship and financial transaction. Information that was previously spread across email inboxes, PDFs and accounting exports becomes consolidated into a single repository.
If that archive is compromised, the consequences extend well beyond tax compliance. It becomes a significant data breach involving commercially sensitive financial information, and the UAE’s Personal Data Protection Law may trigger breach notification obligations where personal data is involved.
What to Do Before the 30 October Deadline
If your business exceeds the AED 50 million revenue threshold, the 30 October deadline is approaching quickly.
Before signing with an Accredited Service Provider, verify that it appears on the Ministry of Finance’s official list. Review how your ERP credentials will be stored and managed. Apply least-privilege access to service accounts. Strengthen approval processes for supplier bank detail changes. Make sure onboarding procedures and logging are in place before the first invoice is transmitted.
Getting those controls right before implementation is considerably easier than trying to investigate missing payments or compromised financial data once the system is already live.
This article provides general information based on the current published Ministerial and Cabinet Decisions and should not be considered legal or tax advice. Businesses should confirm the latest requirements with the UAE Ministry of Finance or a qualified tax adviser before making compliance decisions.
