Since October 1, 2026, Swiss banks have been rejecting QR bills that include “combined” addresses (Type K): the grace period granted during the rollout of Implementation Guidelines 2.3 in November 2025 has officially closed (SIX Group, QR Bill — standards). The next milestone: version 2.4 of the QR Bill Implementation Guidelines takes effect on November 14, 2026, introducing new rules for euro-denominated payments and adding Romansh as a supported language.
Background: Two Years of Transition Draw to a Close
The Swiss QR bill has been mandatory since 2022 for all creditors holding a Swiss bank account. SIX Group, operator of the Swiss Interbank Clearing (SIC), publishes the standards through its Implementation Guidelines.
Version 2.3, which came into force on November 22, 2025, formally prohibited combined addresses (Type K) in favour of structured addresses (Type S). In this format, the street, house number, postal code, and city must each be entered in separate fields. SIX granted issuers a tolerance period to update their software. That tolerance ended on September 30, 2026 (Projektron, Swiss QR-Bill — Structured Addresses and IG 2.4, 2026).
Impact for Businesses: Three Areas to Watch
For IT and Finance leaders at Swiss SMEs, the risk is operational: a QR bill with a Type K address issued after October 1st is liable to be rejected during bank processing, delaying payment collection and creating friction with debtor customers.
Compliance depends directly on the version of the invoicing module in use. The main Swiss ERP vendors (Abacus, Bexio, Topal, Proffix, Sage Schweiz) had all updated their products before November 2025. The businesses most at risk are those using custom configurations, in-house export scripts, or third-party connectors that generate the QR code independently.
Immediate action checklist:
- Check the address type generated in the QR section of each invoice template: look for the field
AdrTp=S(structured) in XML files or in the ERP configuration settings. - Validate with an online tool: the FactureQR validator allows you to verify the compliance of a generated QR code without access to internal systems.
- Audit third-party connectors: EDI components, billing APIs, and archiving platform exports often generate their own QR code outside the control of the main ERP.
November 2026 concentrates two distinct regulatory deadlines for the Swiss payment chain: the QR bill (IG 2.4 on November 14) and the ISO 20022 migration (end of SIC coexistence on November 13). IT teams managing both topics in parallel should prioritise their integration testing accordingly.
What to Monitor Before November 14
IG 2.4 brings two notable changes. First, the addition of Romansh headers in sections 3.2, 4.4, and Annex C — relevant for companies operating in Graubünden. Second, additional restrictions for euro-denominated invoices: only the combinations of IBAN with SCOR reference and IBAN with unstructured message remain accepted, which may constrain certain cross-border payment flows (SIX Group, QR Bill IG v2.4).
Version 2.3 remains valid in parallel until November 2027. Companies that address their Type K compliance now are well advised to factor in the EUR constraints from version 2.4 at the same time, to avoid a second remediation cycle six weeks later.
For the full regulatory context of operating in Switzerland, see our guide to ERP implementation in Switzerland: Abacus, Bexio, QR bill and VAT and our analysis of the ISO 20022 deadline of November 13, 2026: impact on SwissSalary and Business Central.
