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Spotlight PEPPOL BIS Billing 3.0 The EU e-invoicing mandate is here — France Sept 2026, Belgium Jan 2026, Germany 2025.

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Foundations

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Standards

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Flagship messages

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Tools

No mandate — voluntary adoption via providers

Unlike Italy (SdI), Poland (KSeF) or France (2026 reform), Switzerland imposes no B2B e-invoicing mandate. For the newcomer: no law obliges a Swiss company to issue or receive its invoices as structured electronic data. Yet adoption is high — driven by providers and the swissDIGIN forum, in a very Swiss pull/opt-in logic.

History — swissDIGIN and the choice of voluntarism

The swissDIGIN forum (Swiss Digital Invoice) was created in 2003 as a neutral initiative bringing together large issuers, receivers and providers. Its goal: to promote B2B e-invoicing through cooperation and shared recommendations, never through legal compulsion. This approach reflects the Swiss culture of subsidiarity and industry consensus.

The result is a mature ecosystem without a mandate: processing savings (entry, reconciliation, archiving) suffice to drive adoption. The modernisation of the payment rail (ISO 20022 in 2018, QR-bill in 2020) accelerated the move without ever imposing it.

text swissdigin-timeline.txt 
2003       | Creation of the swissDIGIN forum (Swiss Digital Invoice) — a
           | neutral initiative bringing together issuers, receivers and
           | providers to promote B2B e-invoicing without legal compulsion.
           |
2005-2015  | Provider ramp-up: PostFinance (yellowbill / E-Rechnung network),
           | Abacus AbaNet, SIX Paynet, Conextrade (Swisscom). Adoption pulled
           | by processing savings.
           |
2016       | Federal B2G becomes mandatory (> CHF 5,000) — the only segment
           | made binding, contractually, not via a universal tax mandate.
           |
2018-2020  | ISO 20022 harmonisation + QR-bill launch: the payment rail
           | modernises, pulling e-invoicing without imposing it.
           |
2024-2026  | Switzerland observes ViDA (EU) without subscribing. The debate
           | "should there be a Swiss mandate?" stays open; to date, no plan
           | for a general B2B mandate.

Governance — swissDIGIN, GS1, providers

Three circles structure the ecosystem: swissDIGIN (cross-sector B2B recommendations), GS1 Switzerland (EANCOM/GS1 standards for retail and industry), and the service providers that operate the exchange networks. No public authority centralises invoices — the FTA/ESTV only checks after the fact during VAT audits.

Players — PostFinance, Abacus, SIX Paynet

The main networks and solutions of the Swiss ecosystem:

  • PostFinance — E-Rechnung / yellowbill network, historically central in B2G and B2B.
  • SIX Paynet / eBill — invoice pushed into e-banking, operated by SIX.
  • Abacus (AbaNet) — leading Swiss ERP and e-invoice exchange network.
  • Pingen, Bexio, Klara — SME solutions, QR-bill generation and e-invoice sending.
  • Pagero, Comarch, Conextrade — operators/VANs for EDIFACT and cross-border PEPPOL flows.
text swissdigin-recommendations.txt 
swissDIGIN — key recommendations (summary)

1. No imposed format: UBL, EDIFACT INVOIC, ZUGFeRD/Factur-X, yellowbill
   XML and PEPPOL BIS are all acceptable if agreed between partners.
2. Bilateral agreement: issuer and receiver agree on format, channel
   (provider network, signed e-mail, PEPPOL) and minimum content.
3. Minimum content: supplier UID/IDE no., VAT no. (UID + MWST), address,
   date, lines, VAT breakdown (8.1 / 3.8 / 2.6 / 0%), total.
4. Integrity & authenticity: free choice of means (signature, EDI,
   management controls) — Swiss law does not require a signature.
5. Archiving: 10 years (art. 70 para. 2 VAT Act / MWSTG), readable formats.

Voluntary model vs clearance (SdI, KSeF)

DimensionSwitzerland (voluntary)Italy SdI / Poland KSeF
B2B obligationNoneUniversal
Central platformNo — decentralised four-cornerYes — tax clearance
Tax validationAfter the fact (VAT audit)Real-time (pre-validation)
Imposed formatNo (conventional)Yes (FatturaPA / FA(2))
Adoption driverSavings + providersLaw + penalties

Adoption — high despite no mandate

  • Large enterprises: B2B e-invoicing widely used, driven by ERPs and provider networks.
  • SMEs: gradual migration, accelerated by the QR-bill (which forced everyone to touch digital in 2020-2022).
  • eBill growing: SIX reports continuous growth, a sign of sustained voluntary adoption on the B2C/B2B side.
  • No single official figure: with no central platform, there is no national counter — unlike Italy, where the SdI tallies every invoice.

Common pitfalls

  • Assuming a mandate exists. No supplier can require e-invoicing from a Swiss customer outside federal B2G; it is always conventional.
  • Confusing the QR-bill with a structured e-invoice. The QR-bill is a payment support, not a full structured invoice (lines/VAT). See the QR-bill page.
  • Forgetting 10-year archiving. Art. 70 para. 2 VAT Act / MWSTG requires keeping invoices and records for 10 years, in a readable format.
  • Imposing a signature. Swiss law does not require an electronic signature for integrity/authenticity — other means (EDI, management controls) are admissible.