Kelstad

Country guides

The mandate, one country at a time.

"Every country you sell to" is the goal — and it starts with the mandates that are live or landing now. Each guide is in plain language, cited to the official government source.

01 Belgium 2026 Structured B2B e-invoicing via Peppol — mandatory now, even for the smallest sellers.
Format
Peppol BIS
Standard
EN 16931
 02 Germany 27·28 Receive since 2025; issuing phases in from 2027 (>€800k) to 2028.
Format
XRechnung / ZUGFeRD
Standard
EN 16931
 03 France 26·27 Receive by Sept 2026; SMEs issue from Sept 2027 via a plateforme agréée.
Format
Factur-X
Via
plateforme agréée
+ More countries We add a guide as each mandate lands — Poland, Italy, Spain and others are on the calendar. Join the waitlist to hear when yours is covered. Join the founding members →