May be e-invoice in a foreign language or bilingual?
Short answer
Yes, e-invoice may be drawn up or received in a foreign language. By § 76 ods. 7 Act on VAT translation into the Slovak language must be provided only at the request of the tax authority for the purpose of inspection. The law does not require that the Slovak translation be attached to each invoice. However, a bilingual display must not create two different versions of the document.
A Foreign Language Possible
§ 76 ods. 7 does not require English on each invoice.
Translation on request
The tax office may request a Slovak translation for inspection.
Clear values
The bilingual view must not create different amounts, dates or tax data.
Agree Language
The language of descriptions and business communication should be agreed with the partner.
Conclusion
A foreign language is acceptable. Translation in Slovak is required upon request of the tax office and the language version cannot change content XML.
Act on VAT · Financial Administration of the Slovak Republic · Peppol BIS Billing
Not legal advice. Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.