Guides · Updated June 2026

E-invoicing guides: all topics

Everything on structured e-invoicing in one place: the EN 16931 standard, the XRechnung, ZUGFeRD and Factur-X formats, Peppol, DATEV export, reverse charge and the mandate across 15 EU countries. Explained plainly, free, no signup.

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Understand the basics

What is an e-invoice? Definition, formats, mandate
EN 16931 explained: the European e-invoice standard
Create a ZUGFeRD invoice: step by step
ZUGFeRD vs XRechnung: hybrid PDF or pure XML
UBL vs CII: the two EN 16931 syntaxes explained
What is a CIUS: national variants of EN 16931
What is Peppol BIS 3.0: format, network, Access Points

Mandate, deadlines & receiving

ViDA 2030 explained: what changes for EU businesses
How to receive an e-invoice: the obligation since 2025
GoBD and e-invoices: audit-proof archiving
Small businesses and e-invoicing: receive yes, issue no

VAT & reverse charge

Write a reverse-charge invoice: AE code, mandatory note, VIES
Check a VAT ID via VIES: why and how

Guides by profession

E-invoicing for freelancers: what you actually need
E-invoicing for tradespeople: construction, public bodies
E-invoicing for tax advisors: structured data, DATEV
E-invoicing for agencies: B2B, EU clients, reverse charge

E-invoicing by country 16 Guides

All EU countries
France
Italy
Spain
Belgium
Netherlands
Poland
Portugal
Romania
Croatia
Greece
Ireland
Denmark
Sweden
Slovakia
Slovenia

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Vera produces XRechnung, ZUGFeRD and Factur-X to EN 16931 right in your browser and validates before download. Free for 5 invoices a month, no signup.

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Free for 5 invoices / month · 27 EU countries · no signup