France's E-Invoicing Mandate Is Live: What B2B SaaS Companies Need to Know

TL;DR

• France's e-invoicing mandate has been in force since September 1, 2026 — a plain PDF no longer counts as a valid B2B invoice.
• Large and mid-size companies (~250+ employees) must already be issuing e-invoices; everyone must already be able to receive them. SMEs have until September 1, 2027 to start issuing.
• Non-compliance carries real fines (up to €1,000 recurring, capped e-reporting penalties up to €15,000/year) and the risk of invoices being ruled legally invalid, with VAT recovery refused.
• Younium handles it natively through our DGFiP-approved PDP partner, Invopop — registration, formats, and reporting all run inside the platform, with no separate portal or manual workarounds.

As of September 1, 2026, a plain PDF invoice isn't enough anymore for a lot of B2B transactions in France.

France's mandatory e-invoicing reform (governed by the DGFiP, the same authority that oversees French VAT) is now in effect, replacing paper and unstructured PDF invoices with structured, certified formats. Depending on your company's size, you're either already required to comply, or you still have runway. You can check which rules and deadlines apply to your business in the DGFiP's official PDF, but in short, all businesses must be able to receive e-invoices from 1 September 2026.

But what does the reform actually mean for B2B SaaS companies? How does e-invoicing work in practice, what do you need to do to stay compliant, and what happens if you don't? Here's what you need to know, and how Younium can help you navigate the transition.

How it actually works

Every invoice now routes through a certified platform called a PDP (Plateforme Agréée), rather than being emailed directly. Under the so-called "five-corner model," your billing system sends the invoice to your own PDP, which looks up your customer's PDP in the Annuaire (France's national e-invoicing directory) and routes it to them over the Peppol network, while also reporting the transaction data to the PPF, the government's tax-surveillance hub. No PDP relationship, no legally valid invoice.

Who's affected, and when

Timeline at a glance

• 2019–2023: The reform is announced, then pushed back twice as the DGFiP works through the rollout.
• September 1, 2026: Everyone must be able to receive e-invoices. Large and mid-size companies (~250+ employees) must also start issuing them — that's today.
• September 1, 2027: SMEs and micro-businesses join on the issuing side.
• Already in place: Younium's Invopop partnership has been live since late May 2026 — in place well ahead of the deadline.

Why this matters more for subscription businesses

A one-off invoice is easy to patch around. Recurring billing at volume is not — if your platform isn't ready, every renewal invoice to a French customer becomes a compliance risk, not just an accounting detail. This is exactly why Younium built compliance into the platform natively, instead of leaving it as a manual project for your team.

What's at stake if you don't comply

The penalties aren't theoretical. Issuing invoices outside an approved platform can mean a fine of €50 per non-compliant invoice. Failing to receive e-invoices through a certified PDP brings escalating penalties — €500 after a first notice, €1,000 after a second, and €1,000 every three months after that until you're compliant. E-reporting failures are fined separately, at €500 per transmission failure, capped at €15,000 a year.

There's a first-offense tolerance. No penalty for a first slip in the current year and the previous three, if it's corrected within 30 days, but that's a grace window, not a pass. And it doesn't cover the bigger risk: a non-compliant invoice issued after your deadline may be legally invalid, with VAT recovery refused on it. That's cash-flow and audit exposure, not just paperwork.

Penalty figures per DGFiP guidance, as clarified in early 2026.

How Younium handles it

Instead of adding another vendor on top of your billing platform, Younium becomes the single source of truth for your French invoicing — one platform for billing, compliance, and reporting, instead of a patchwork of tools that all need to agree with each other. We've partnered with Invopop, a PDP officially approved by the DGFiP, to bring this fully inside the platform:

• No separate portal. Registration in the Annuaire happens inside Younium's own guided flow — customers never need a separate PDP account or credentials.
• Formats handled automatically. Factur-X, UBL and CII are generated for you — EN16931 compliant and Peppol BIS certified.
• Both directions covered. Issuing, receiving, and PPF reporting all run without manual submission.
• Archiving built in. Invoices are retained to match France's 10-year commercial-law requirement, with the signed original preserved throughout.

How to tell if your billing platform is actually ready

Most vendors will tell you they're "compliant." Here's what that should actually mean — five questions worth asking before taking their word for it:

• Is it Peppol BIS certified, or just capable of exporting a UBL file?
• Does it register you in the Annuaire automatically, or is that a manual step you own?
• Does it report to the PPF as part of issuing the invoice, or is e-reporting a separate integration you have to wire up yourself?
• Is archiving built to the 10-year commercial-law standard, or just the shorter 6-year tax minimum?
• Is the PDP relationship whitelabelled inside the platform, or a separate portal with its own login?

Answer "manual," "separate," or "not sure" more than once, and compliance is still sitting on your team's plate, not your vendor's. Younium answers all five the other way.

Getting ready

• Check which deadline applies to you: large/mid-size from September 2026, SME/micro from September 2027, but everyone must be able to receive from September 2026.
• Make sure your SIREN/SIRET and VAT IDs are correct and up to date.
• If you haven't already, test sending and receiving during the open pilot window before your mandatory date arrives.

Beyond France: the wider EU picture

France isn't acting alone.

The EU's VAT in the Digital Age (ViDA) reforms bring near-real-time digital reporting and mandatory e-invoicing to intra-EU B2B transactions from July 2030, and member states will be required to align their existing domestic systems — France's included — with the EU standard by January 2035.

In practice, that means the shift happening in France now is the leading edge of something wider, not a one-off. Getting French invoicing sorted today is a head start on where the rest of the EU is heading.

Source: EU ViDA legislative timeline, as of 2026.

If you want to see how this fits into your specific setup, get in touch with our team.

Still have questions? Here's what comes up most often.

FAQ

Q1. What is a PDP (Plateforme de Dématérialisation Partenaire)?

A private platform certified by the DGFiP to handle e-invoicing on a company's behalf — it registers you in the Annuaire, generates and validates your invoice formats, and reports transaction data to the PPF. Younium's certified PDP partner is Invopop.

Q2. What is the Annuaire?

France's national e-invoicing directory. Every company registers its PDP there, so that when an invoice needs to be routed, the sender's PDP can look up which PDP represents the recipient.

Q3. How is Peppol different from a PDP?

Peppol is the network the invoice actually travels across once your PDP and your customer's PDP have been matched through the Annuaire. Your PDP is your access point to that network — not the network itself.

Q4. What is the PPF, and why does it matter for VAT?

The Plateforme Publique de Facturation is the government's central hub. It doesn't deliver invoices — that happens PDP to PDP — but every PDP reports transaction data to it for VAT surveillance ("e-reporting").

Q5. Do we need to e-invoice customers outside France too?

No — the mandate covers domestic B2B transactions between French companies. Cross-border invoicing follows separate rules, though e-invoicing requirements are expanding across the EU more broadly.

Q6. What formats actually count as compliant?

Structured formats only: Factur-X (a hybrid PDF+XML), UBL, or CII — all EN16931 compliant and Peppol BIS certified. A plain PDF or a scanned image no longer qualifies as a valid invoice.

Q7. How long do we have to keep e-invoices on file?

10 years, under French commercial-law archiving rules — longer than the general 6-year tax-law minimum — with the signed original preserved throughout.

Q8. What actually happens if we miss the deadline?

Invoices issued after your mandatory date may be legally invalid, and VAT recovery can be refused on them. That's a cash-flow and audit risk, not just a paperwork problem.