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Since 1 January 2026, a PDF emailed to a supplier is no longer allowed to be your only invoice in Belgium — and most restaurant owners don't realise the law applies to them precisely because they rarely write an invoice themselves.
A restaurant runs on receipts, not invoices. A guest pays by card or cash, gets a till receipt, and that's the end of the transaction. That's exactly why Belgium's new e-invoicing law has landed for most owners as "something for offices" — while in reality it has applied to every business, including yours, since 1 January 2026, even if you've never written an invoice yourself.
This site already has thorough coverage of the fiscal cash register (the GKS system that polices what you charge guests — your B2C revenue) and of the VAT rates that apply to that revenue. Neither covers e-invoicing. That's a different law with a different target: not what you charge a guest, but how invoices move between businesses — a category of transaction a restaurant easily overlooks because it's such a small share of daily turnover, which is exactly why it goes wrong so often.
The law itself isn't a vague future plan. It took effect on 1 January 2026, came with a three-month tolerance period with no fines, and that tolerance period ended on 31 March 2026 — which means that by the time this article is published, enforcement has already been a fact for nearly five months. Suppliers sending invoices to your business today are increasingly doing so over the mandatory Peppol network already, whether or not your own system can do anything with it.
This article counts up seven numbers: exactly when the law started and why enforcement is already live, which slice of your invoices counts automatically and which doesn't, how the fine escalates on repetition, what a paper invoice really costs you compared with a digital one, where the exemption threshold sits and what it does and doesn't exempt, how many other EU countries have taken the same road, and finally what it costs to just get it right now.
Why "I never send invoices" isn't an exemption
The reasoning most owners use is understandable: their revenue comes from guests at a table, not from businesses wanting an invoice. The problem is that the law doesn't ask whether invoicing is your main activity — it asks whether a B2B transaction ever happens, and in hospitality that happens more often than most owners realise: a company booking a Christmas dinner and asking for an invoice in the company's name, a catering contract with a local business, a standing business account for the law firm around the corner. Each of those situations makes you, for that one transaction, a party legally required to issue a structured e-invoice.
More important, and more often missed: the obligation runs both ways. Even a restaurant that never invoices anyone itself still RECEIVES invoices — from the wholesaler, the linen service, the equipment-maintenance company, the POS software provider. Every one of those suppliers has, since 1 January 2026, been just as required to send you a structured e-invoice instead of a PDF, and you're required to be able to receive and process it. That side of the law touches every restaurant, no exceptions, whether or not the business itself ever has a B2B customer.
The seven numbers below are each independently checkable: the law itself and Belgium's official e-invoicing FAQ, the fine scale as it's actually being applied, a widely cited European cost study on processing invoices, and the announced timeline of other EU countries and of Europe as a whole. None of these figures is an educated guess, and the order follows how you'd actually work this out yourself: when it started, what exactly falls under it, what it costs to get it wrong, what an invoice costs you in the first place, the threshold almost everyone misunderstands, the wider European picture, and finally what it costs to simply do it right straight away.
The ultimate guide Every finance article in one place VAT, cash-register rules, cutting costs and more — the overview. See the guideThe 7 numbers behind the digital invoice
Each number below marks a line the law draws, or a cost it brings with it. Check your own situation with the tool further down rather than guessing whether it applies to you.
1. 1 January 2026 — the day e-invoicing became mandatory in Belgium, and why you already feel it
Since 1 January 2026, every VAT-registered business established in Belgium has been required to send and receive structured electronic invoices for domestic B2B transactions, over the Peppol network and in a standardised format (Peppol BIS 3.0, aligned with European standard EN 16931). A PDF by email or a paper invoice no longer counts as your sole invoicing method — they can still exist as an attachment or a readable copy, but the structured file is what's legally required.
What makes this number relevant today: the law included a three-month tolerance period during which an audit produced only a warning, no fine. That tolerance period ended on 31 March 2026. By the time this article is published, at the end of August 2026, real enforcement has therefore already been running for nearly five months — this isn't a law that's "coming soon", it has already arrived, and most owners who've never heard of Peppol simply haven't had an audit or an incident yet.
2. 2 kinds of transaction, and only 1 of them touches you automatically
This is the line that decides whether the law affects your business today, and it's rarely explained clearly. B2C transactions — a guest settling the bill at the table, whether by card or cash — sit entirely outside the e-invoicing mandate. Your till receipt, your bill, the way you charge a table doesn't change at all under this law. The obligation applies exclusively to B2B transactions: invoices between two VAT-registered businesses both established in Belgium.
The problem is that few owners realise how quickly an ordinary restaurant becomes a B2B party anyway. A company booking a Christmas dinner and asking for an invoice in the company's name rather than a till receipt, a catering contract with an office nearby, a standing business account for a law or accounting firm — each of those turns your business, for that one invoice, into a party legally required to issue a structured e-invoice. Belgium's own official e-invoicing FAQ uses almost exactly this example: a restaurant that both serves walk-in guests (B2C, outside the law) and invoices corporate events (B2B, inside it) — precisely the mix most independent restaurants have without ever thinking about it.
Same obligation, same suppliers — with a completely different risk profile.
The difference between these two bars isn't how much you spend on software — it's two choices that cost little: whether your system is actually connected, and whether someone in your business knows to check it.
3. €1,500 → €3,000 → €5,000 — the escalating fine for repeated non-compliance
The fine for a restaurant that's required to send e-invoices but doesn't isn't a single fixed amount — it's an escalating scale: €1,500 for a first infringement, €3,000 for a second, and €5,000 for a third within the same window. An infringement only counts as a "second" one if it's established more than three months after the first — the scale is built to punish repetition, not to hit a single one-off mistake hard immediately.
That escalating shape is exactly why this number is a real risk for a small business, unlike the multi-million-euro figures GDPR articles often lead with as a deterrent: this is a concrete, predictable amount an independent restaurant genuinely feels, and it climbs faster than an owner would expect if the first infringement is ignored instead of fixed right away.
4. €17.60 versus €6.40 — what a single invoice actually costs you, on paper or digital
Beyond the fine, there's a second, more encouraging number that appears in no piece of legislation but does come from a widely cited European study: processing an average paper invoice costs a business roughly €17.60 — time to open it, key it into the books, check it and file it. A semi-automated e-invoice costs about €6.40 on average. With a fully automated Peppol integration, that can fall further, to around €1 per invoice.
For a restaurant that receives multiple supplier invoices every week — wholesaler, drinks, linen, maintenance, software — that difference isn't theoretical. It's the reason this law, despite the switching cost, ends up saving money rather than costing it once the changeover itself is done. The tool further down converts that difference into what it means for your own number of invoices per month.
5. €25,000 — the turnover threshold that exempts you from SENDING, never from RECEIVING
There is a genuine exception, and it's almost universally misunderstood. Businesses using the small-business VAT exemption scheme — annual turnover up to €25,000 — are exempt from the obligation to send their own structured e-invoices. For most restaurants that's a theoretical point: that turnover ceiling sits far below what an ordinary business does, so the exemption barely touches anyone in this sector.
What is relevant to everyone, including the rare business that does stay under that ceiling: the exemption applies exclusively to SENDING your own invoices. It exempts no restaurant from the obligation to be able to RECEIVE supplier invoices in the correct format. That's the misunderstanding that comes up most often — owners who assume a low turnover or a small B2B share puts them entirely outside the law, when the receiving obligation, the side that touches most supplier invoices, still applies to virtually every business.
6. 5 EU countries already have the law, or will soon — then 2030 arrives for the whole Union
Belgium isn't alone, and that matters for any owner with cross-border suppliers or a second site abroad. Italy made e-invoicing mandatory back in 2019. Poland is rolling out its KSeF system in phases from February 2026 for its largest businesses and April 2026 for most others. France requires every business to be able to receive e-invoices from September 2026, with large and mid-sized businesses also required to issue them from that date and everyone else from September 2027. Germany has required every business to be able to receive e-invoices since January 2025, with the issuing obligation phased in between 2027 and 2028. Together with Belgium, that's at least five EU countries with a law that's either already live or already locked in for 2027.
And it doesn't stop there. In November 2024, all 27 EU member states reached political agreement on the "VAT in the Digital Age" (ViDA) package, which by 2030 makes cross-border B2B e-invoicing and digital reporting within ten days of the transaction mandatory across the whole Union. What looks like a patchwork of national laws today becomes one European requirement within this decade — a reason to set the system up properly now rather than adjusting it again every couple of years.
7. ≈€590 — what it actually costs to get your whole business ready
The software itself is usually cheaper than owners expect: an invoicing or accounting package with built-in Peppol connectivity typically costs €20 to €50 a month as a standalone access point, or is often already bundled into accounting software you're already using. What almost nobody budgets for are the four items next to it: your accountant's time to actually set up the connection and supplier mapping, the time to teach yourself or your staff the new way of working, looking up and registering the Peppol ID of every regular supplier, and a small buffer for a wrong VAT number or a first connection that doesn't work straight away.
The worked example below adds five items up to a realistic total budget of just under €600 — a fraction of what a single third-strike fine would already cost. Plug in your own quotes in the tool further down once you have them, and set that figure against the €1,500-to-€5,000 scale above: this is one of the few compliance costs on this site that's smaller than the risk it avoids.
Five items from a realistic worked example — plug in your own quotes in the tool below.
Together: €590. Compare that with the fine scale above: for most businesses, this budget is smaller than a single second-strike fine.
Check your own e-invoicing exposure
Fill in the five items below with your own quotes once you have them — the starting values are the worked example from the text above.
Adjust the two checkboxes and the number of supplier invoices to your own situation, and instantly see both your setup budget and the monthly saving you're missing out on as long as you're still working on paper.
E-invoicing check
Five setup items, plus the two choices that decide your risk profile.
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This is a check tool, not tax advice — the starting values are a realistic worked example, not a guarantee for your specific situation.
What this check tool deliberately doesn't do: it doesn't calculate the odds of an audit or an exact fine in euros, because no reliable, per-business figure for that exists. What it does do is add up every real setup cost into one budget, show the monthly saving that sits against that cost, and show the two factors that decide your risk profile — independent of how much you spend on software.
Set the risk profile from this tool next to the seven numbers above, and you have the full, realistic picture of what e-invoicing asks of your restaurant — not just what's on your software provider's own invoice.
One connection, two questions you can answer yourself
E-invoicing isn't a law that's coming "eventually" — it's been in force for five months, with a fine scale that's been actively applied for just as long. The problem is rarely the law itself, but the silent assumption that it doesn't touch a restaurant because the restaurant doesn't send invoices itself: the suppliers sending invoices to your business have been just as obligated since day one, and the first corporate booking that asks for an invoice in a company's name immediately makes you a party required to send one yourself.
The order in which you tackle this isn't arbitrary: first check whether you ever invoice a business, or ever will (the number that decides whether you're already exposed today), then check whether your accounting software or accountant is actually connected via Peppol rather than assuming "we already have accounting software" is enough, then look up the Peppol ID of your regular suppliers so incoming invoices don't get stuck, and only then — once everything above checks out — ask whether a quick check with your accountant is worth it for your specific setup.
Use the tool above to check your own exposure before an audit or a rejected supplier invoice ever happens, and remember the one number that puts the rest in perspective: the setup budget to just get this right now is, for most businesses, smaller than a single second-strike fine alone would already be.