Picture the invoice run at a group with entities in Poland, France and Germany. In Poland, invoices now go through the national KSeF system. In France, since 1 September, every business must be able to receive e-invoices, and large and mid-sized companies must issue them. In Germany, the general transition that allowed other invoice formats ends on 31 December 2026, with a narrower one for 2027. One accounts receivable team, three rule sets, three different sets of failure points.
E-invoicing mandates used to be a question for the tax team and the ERP vendor. They now change an invoice's format, its route and, in some countries, how quickly it must be reported. This guide sets out the dates from official sources as they stood on 21 October 2026, and what to do before the next cluster of deadlines on 1 January 2027.
E-invoicing mandates 2026–2028: the timeline
The table lists only what the official sources state. Dates already past are shown as in effect. Check each source before acting, because rules in this area continue to move.
| Date | Jurisdiction | What applies | Status on 21 Oct 2026 |
|---|---|---|---|
| 1 Apr 2023 | Mexico | CFDI version 4.0 mandatory | In effect |
| 1 Jan 2025 | Germany | Businesses must be able to receive e-invoices | In effect |
| 1 Apr 2025 | India | Taxpayers with AATO of ₹10 crore and above cannot report e-invoices, credit notes or debit notes older than 30 days on the IRP | In effect |
| 14 Apr 2025 | EU (ViDA) | Directive (EU) 2025/516 in force; Member States may introduce mandatory e-invoicing | In effect |
| 1 Jan 2026 | Belgium | Structured e-invoicing compulsory for almost all transactions between Belgian VAT-liable enterprises; B2C excluded | In effect |
| 1 Jan 2026 | Croatia | VAT-registered taxpayers exchange eRačun; non-VAT taxpayers must receive during 2026 | In effect |
| 1 Feb 2026 | Poland | KSeF required for firms with 2024 sales above PLN 200 million (including VAT) | In effect |
| 1 Apr 2026 | Poland | KSeF required for all other taxpayers | In effect |
| 1 Sep 2026 | France | All businesses must be able to receive e-invoices; large companies and mid-sized companies (ETIs) must issue them; e-reporting on the same timetable | In effect |
| 31 Dec 2026 | Poland | Last day invoices may be issued outside KSeF where monthly sales on them are no more than PLN 10,000 | Upcoming |
| 31 Dec 2026 | Germany | Last day invoices other than e-invoices are allowed for supplies made in 2025 and 2026 | Upcoming |
| 1 Jan 2027 | Germany | For supplies made in 2027, invoices other than e-invoices allowed only if prior-year turnover was not more than €800,000, or via EDI | Upcoming |
| 1 Jan 2027 | Croatia | Non-VAT taxpayers issue eRačun | Upcoming |
| Before 1 Jan 2027 | Spain (VERI*FACTU) | Companies adapt billing software; subject to further change | Upcoming |
| Before 1 Jul 2027 | Spain (VERI*FACTU) | Other taxpayers adapt billing software; subject to further change | Upcoming |
| 1 Sep 2027 | France | SMEs and micro-enterprises must issue e-invoices; e-reporting on the same timetable | Upcoming |
| 1 Jan 2028 | Germany | E-invoicing applies to all, with no general transition left | Upcoming |
| 1 Jul 2028 | EU (ViDA) | Platform economy rules and single VAT registration measures apply | Upcoming |
| 1 Jul 2030 | EU (ViDA) | Digital Reporting Requirements apply to cross-border B2B transactions | Upcoming |
| 1 Jan 2035 | EU (ViDA) | Existing domestic systems to align with the EU model | Upcoming |
Country notes and caveats
EU. Directive (EU) 2025/516 was adopted on 11 March 2025 and entered into force on 14 April 2025, which lets Member States introduce mandatory e-invoicing. Expect more national mandates before the 2030 cross-border reporting date, each on its own timetable.
Poland. The low-value relief ends on 31 December 2026, so entities that relied on it need their full KSeF process working from January.
Germany. The transitional rules sit in § 27(38) of the VAT Act. Each German entity should test its own prior-year turnover against the €800,000 threshold for 2027 supplies, and note that EDI is a separate route.
Spain (VERI*FACTU). These rules govern billing software, not the exchange of B2B e-invoices, so treat them as a systems compliance project. The dates come from RDL 15/2025 as set out in an AEAT note updated 13 October 2026. They are subject to further change; check the AEAT notice before planning around them.
India. The 30-day limit turns a reporting backlog into a compliance failure. AR has to report on a short, regular cycle, so a late batch or a stuck integration does not push invoices past the limit.
Mexico. CFDI 4.0 has been mandatory since 2023. For groups with Mexican entities, the work is data quality in each CFDI rather than adoption.
What changes inside the finance process
E-invoicing is often scoped as an IT integration. Most of the work lands on AP and AR.
Master data. Structured invoices fail validation on tax IDs, addresses and legal names that a PDF tolerated. Clean customer and supplier records before go-live.
A new exception type. Rejections become a daily queue. Someone has to own them, with a time limit, or invoices sit unissued while cash waits.
Receiving is a process too. AP must accept structured invoices through the required channel and match them to orders and receipts. Germany required receiving from 2025, well before issuing, and in France every business must receive a year before SMEs must issue.
Credit notes and timing. Corrections often follow the same route as invoices, and India's rule shows that some regimes care about speed as well as format.
What a multi-country finance team should do now
With several deadlines on 1 January 2027, the weeks left in 2026 are short. A practical order:
| Action | Why now | Owner |
|---|---|---|
| List every entity against the timeline above, with the obligation and date for each | Scope is entity by entity, not group-wide | Group tax or group controller |
| Test scope thresholds per entity: Poland's PLN 200 million, Germany's €800,000, India's ₹10 crore AATO, France's company size category | Thresholds decide which date applies | Entity controller with local adviser |
| Decide the sending and receiving route per country: ERP functionality, a service provider or a national portal | Route drives cost, testing time and who handles rejections | Finance systems lead |
| Clean customer and supplier master data for tax IDs, addresses and legal names | Validation failures start on day one | AR and AP leads |
| Test receiving before sending, where receiving starts first | A rejected supplier invoice delays payment and can strain supplier relationships | AP lead |
| Add e-invoice status (sent, accepted, rejected) to AR and AP exception queues, with owners and time limits | Rejections otherwise sit unseen | AR and AP leads |
| Add every mandate to the compliance calendar with its official source and a last-checked date | Dates in this area keep moving | Compliance calendar owner |
| Budget 2027 for France's SME wave and Germany's 2028 date where they apply | These are the next large waves for many groups | Group CFO |
The compliance calendar row matters more than it looks. Our July issue, A Compliance Calendar for Multi-Country Groups, sets out an obligations register with a source link and a last-checked date on every line, which is how a team learns about a moved date before missing it.
Where AI helps, and where it does not
Rejections. AI can read a rejection message, identify the likely cause, such as a missing tax ID or a mismatched total, and draft the fix for a person to approve.
Matching received invoices. Structured data makes PO and receipt match suggestions more reliable than reading PDFs. The usual three-way match rules still apply.
Watching sources. A model can check official pages for changes and summarise them for the person who owns the calendar. That person verifies against the source before changing anything.
What AI should not do: decide whether an entity is in scope, interpret a rule, or issue invoices without a person owning the process. A misread threshold has a real cost, and a confident summary of a rule that has since changed is worse than none.
What an e-invoicing project will not fix
It will not fix the invoice content. A structured invoice with the wrong price, the wrong customer or the wrong tax treatment is still wrong, only delivered faster.
It will not settle tax positions. Whether a transaction is in scope, which rate applies and how a cross-border supply is treated are questions for tax advisers in each country. The e-invoicing route only carries the answer.
Frequently asked questions
Which countries have e-invoicing mandates in effect in 2026?
As of 21 October 2026, mandates are in effect in Belgium, Croatia for VAT-registered taxpayers, Poland and France for receiving and for large and mid-sized issuers. Germany has required businesses to receive e-invoices since 1 January 2025, and India's 30-day reporting limit and Mexico's CFDI 4.0 also apply.
When does e-invoicing become mandatory for all businesses in Germany?
From 1 January 2028. Invoices other than e-invoices are allowed for 2025 and 2026 supplies until 31 December 2026, and for 2027 supplies only where prior-year turnover was not more than €800,000 or the invoice is exchanged by EDI.
When do French SMEs have to issue e-invoices?
From 1 September 2027. Since 1 September 2026 all French businesses must be able to receive e-invoices, and large and mid-sized companies must issue them.
Is Spain's VERI*FACTU an e-invoicing mandate?
No, VERI*FACTU sets rules for billing software rather than for exchanging B2B e-invoices. Companies must adapt before 1 January 2027 and other taxpayers before 1 July 2027, subject to further change.
What is India's 30-day e-invoice reporting rule?
Since 1 April 2025, taxpayers with aggregate annual turnover of ₹10 crore and above cannot report e-invoices, credit notes or debit notes older than 30 days on the invoice registration portal.
Where CFOLogic fits
We design and build compliance and exception views on top of the systems a group already runs, read-only by default, with a person approving anything that leaves the team. We are not a CPA firm; tax filings go through a partner CPA firm, and country-specific positions should be confirmed with local advisers. The Compliance Command Center demo, built on fictional data, shows statutory deadlines for a manufacturer's UK, India and Vietnam entities in one calendar, with escalating reminders.