Open a Slovak e-invoice

Got an .xml file from a supplier or your digital postman? Drop it below. You'll see a readable invoice straight away: supplier, customer, lines, VAT breakdown, totals and payment details. The file is read in your browser and is never uploaded.

Which files can it open?

• Slovak e-invoices and credit notes in Peppol BIS Billing 3.0 (UBL 2.1). Slovakia uses the standard Peppol BIS Billing 3.0 invoice, without a separate national version (CIUS) ^[1].
• Peppol BIS Billing 3.0 from other countries, and CII files (UN/CEFACT), including German XRechnung.

What is Slovak about a Slovak e-invoice?

The XML follows the same rules as anywhere on Peppol. The Financial Administration has published how the Peppol BIS fields map to Slovak law, in a spreadsheet of "transposition" rules (version 1.11, September 2026) ^[2]. The Slovak points that matter most when you read a file:

• Seller and buyer addresses are the DIČ. The electronic address of both parties (fields BT-34 and BT-49) is mandatory and uses scheme 0245 with the ten-digit DIČ ^[2][3]. The VAT number (IČ DPH) sits separately in the tax fields.
• Company register details go in the seller's legal information field (BT-33): legal form, court register, section and insert number ^[2].
• A tax representative is shown only when a foreign seller is represented by one ^[2].
• VAT categories follow the legal regime, not the amount of VAT: for example AE for reverse charge, K for intra-EU supplies, E with a VATEX code for exempt supplies under the Slovak VAT Act ^[4].
• Corrections are usually a credit note plus a new invoice, or a corrective invoice that references the original in BT-25 ^[4].

Alongside each invoice, the providers send a separate Tax Data Document (TDD) to the Financial Administration ^[1][6]. You never see it in your invoice file, and our viewer does not open it.

What the viewer doesn't do

• It does not check the Slovak rules. It shows what is in the file. It does not tell you whether the invoice passes the Peppol BIS rules or the Slovak requirements above. For what common rule codes (such as BR-O-02) mean, see the validation errors explained. Your provider validates invoices before sending them.
• It doesn't create, edit or send invoices. For that you need a certified provider: see the list of certified providers.
• It doesn't archive. VAT payers must keep e-invoices for 10 years ^[5], in XML ^[4]. Keep the original file, not just a printout.

Who sent this file?

Want to check which provider a supplier or customer uses? Try the Peppol ID lookup with their DIČ. That's a separate step; your invoice file is not sent anywhere.

Checked on 9 October 2026. The display is based on KoSIT's open-source visualisation (Apache-2.0); licences are listed on the licence page.