ZUGFeRD or XRechnung? Both implement the same norm, the difference follows from the recipient. When each format applies, and why the Leitweg-ID decides whether an invoice is accepted.
Magento works out the tax rate from three tax classes and a tax rule. Why the customer group is what tips the scales, and where the model runs out in EU trade.
A customer in Belfast is treated like one in Dublin, not like one in Manchester. What XI VAT numbers, BT postcodes and the Windsor Framework mean for your Magento shop.
How to set tax rates in Magento for the OSS scheme in 2026: the concept, a step-by-step guide, a worked example (Germany to France) and a ViDA outlook.
Since 1 January 2021 Great Britain is a non-EU country. Learn how to configure UK VAT, the GBP 135 threshold and the Northern Ireland special case in your Magento shop.
VIES switched its VAT endpoint from http to https. Here is how to get VAT ID validation working again in Magento — via update or a manual fix in Vies.php.
GEISSWEB is a member of the Magento Extension Developers Network (ExtDN) — for extensions without core modifications, clean standards and reliable support.