What VAT ID formats are accepted?
HermitTaxDE supports EU VAT ID formats such as Germany, Austria, France, and other standard EU patterns, plus Swiss VAT numbers in the CHE format. Validation checks both the basic format and, for EU numbers, the VIES lookup path where applicable.
What does the small-business tax mode mean?
If you use the German small-business regulation, VAT is not shown on your invoices. Select the small-business tax mode in Settings so the legally required notice appears automatically on generated invoices.
How does reverse charge work?
For eligible B2B cross-border EU sales with a valid customer VAT ID, the tax liability shifts to the buyer. HermitTaxDE detects this through the order VAT information and generates the invoice without VAT, with the correct reverse-charge wording and export treatment.
Why does my VAT ID show a warning?
Usually the format does not match the expected structure. Check that there are no spaces, the country code is correct, and the number of digits is right for your jurisdiction. For Germany, the standard pattern is DE followed by 9 digits.
What is the difference between VAT ID and Steuernummer?
The VAT ID is used for intra-EU VAT identification. The Steuernummer is issued by the local tax office. At least one of these is usually needed for a complete invoice setup, and some merchants will choose to store both.
Why should I enter bank details?
Your IBAN and related bank details appear on invoices and help support payment by bank transfer. They are also useful for ZUGFeRD-compatible invoice payloads where payment information is included in the invoice data.
What is the Leistungsdatum on the invoice?
The Leistungsdatum is the delivery or service date required on German invoices. HermitTaxDE uses the order date as the default reference so it appears consistently on the generated invoice output and related invoice data.