31 days out, the real e-invoicing project isn't the one you opened
On 1 September, 137 certified platforms will be live. Your expense reports won't be. A look at the blind spot of a reform everyone scoped on the supplier side.
In a month, e-invoicing becomes mandatory in France. For eighteen months, finance departments have done the work: mapping supplier flows, selecting a certified platform (PA), format testing, cutover planning. In July 2026, the French tax authority listed 137 registered platforms. The market delivered.
And yet a position must be taken: nearly all of these projects were scoped on the wrong perimeter.
The "procurement" reflex ate the whole budget
When a company says "e-invoicing project", it means "supplier invoices". That is logical: that is where the volumes, the master data and the ERP integrations are — and where the usual stakeholders sit.
Expense reports were never put on anyone's plan. They don't look like invoices. They arrive through a different tool, they are approved by managers, they are processed by payroll or a T&E team. Nobody wrote them into the scope.
The problem is that the law does not reason in org charts. A client lunch, a hotel night, a car rental is a domestic B2B transaction between two taxable persons. From 1 September, restaurants and hotels progressively enter the scheme like any other supplier. They will issue a structured invoice addressed to your company's registration number, which will land in your certified platform.
Meanwhile, your employee walks away with a PDF in their inbox and drops it into Concur.
Two objects for a single expense
That is where it breaks. The same expense will exist twice, in two pipes that don't talk to each other:
- an e-invoice received via the certified platform, with an identifier, a lifecycle status, and data transmitted to the tax administration;
- an expense line with an attached receipt, in your T&E tool.
Neither chain was designed to recognise the other. Every resulting scenario is bad: double accounting, an invoice received but never matched, a lifecycle status never returned to the supplier, VAT deducted twice — or not at all.
Above €150 excl. VAT, a simplified receipt is not enough: a company-named invoice is required. If your employee gives their personal name at hotel check-in, the e-invoice will never reach you — and the VAT is lost.
This is not a new rule; it is an old one that the reform will make visible and measurable.
The reform doesn't create the problem, it exposes it
That is our real position. The expense channel was not compliant before September 2026. It was simply invisible.
Sample checks on 5% of files, receipts read by eye, a VAT rate typed in by a manager in a hurry: all of that worked because nothing confronted it with an external source of truth. From 1 September, the administration receives transaction data in parallel. The gap between what you declare and what your suppliers declare becomes measurable.
The announced penalties are modest per unit — €500 for having no certified platform, €15 per non-compliant invoice, €250 per e-reporting failure, with annual caps. The fine is not what costs. The catch-up is: retroactively rebuilding thousands of expense lines whose actual content nobody ever read.
What is left to do in 31 days
No redesign. Four scoping actions, doable before the end of August:
- Pull the volume. How many expense lines above €150 excl. VAT over the last twelve months, and with which suppliers? That is your risk perimeter, and it is probably concentrated on a handful of hotel chains and car rental firms.
- Name an owner for the T&E channel in the e-invoicing project. In most organisations, that seat is empty today.
- Set the rule for employees: above the threshold, invoice in the company's name, registration number given at booking. One rule, one communication, before September.
- Decide the matching point. The platform invoice and the T&E line must meet somewhere. If that is nowhere today, it will be an Excel file in October.
On 1 September, your certified platform will work. The question is what it will receive — and whether anyone at your company will be able to match it with what your employees actually spent.
Expense reports: what the September 2026 reform changes for your VAT and certified platforms and expense reports: who does what.
TEVASOFT CONNECT automatically matches invoices received via your certified platform with the corresponding expense lines, in SAP Concur, N2F or Lucca. Contact us.