Advantages

Why use e-invoice?

⚠ Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.

Short answer

Structured electronic invoicing enables automated processing without manually re-entering invoice data, reduces errors, saves time and supports secure exchange through Peppol across the EU. For the specified domestic B2B and B2G supplies, e-invoice becomes a statutory requirement from 1 January 2027, so readiness is both an operational benefit and a compliance requirement.

Automation

Without manual transcription

The accounting system retrieves data directly from the structured XML.

Less Errors

Lower error rate

The risk of typs in manual input is avoided.

Peppol across the EU

One format, more countries

The same standard works across trading partners in the EU.

Compliance with legislation

From 1.1.2027 obligation

The benefits are linked to the legal obligation for B2B and B2G deliveries.

Detailed explanation

Whilst with a PDF invoice or a scanned document, someone must manually transcribe the data into the accounting system, a structured e-invoice in XML format in accordance with EN 16931 allows the accounting software to automatically retrieve the supplier, customer, items, VAT rates and amounts. This reduces the time taken to process a single invoice and minimises the risk of typing errors, which commonly occur during manual transcription. The Peppol network also ensures that any partner in the EU can process the same format, regardless of the accounting software they use.

As set out in the law and the FAQs

The benefits stem from the technical nature of the structured format, as set out in the official methodological and information materials of the Slovak Financial Administration. The legal framework is provided by Act No. 222/2004 Coll. on VAT, as amended by Act No. 385/2025 Coll. (Sections 76a and 85o), which, from 1 January 2027, makes electronic invoicing the default method for issuing domestic B2B and B2G invoices.

Practical examples

  • The accounting software automatically matches the received e-invoice with the purchase order without the need for manual entry of items.
  • A company invoices a partner in another EU Member State using the same format as it does domestically.
  • Following the introduction of e-invoicing, the number of complaints caused by typing errors when transcribing amounts will fall.

Most common mistakes

  • “e-invoicing is just an administrative obligation with no practical benefit.” No, the main benefit is automated processing and a lower error rate.
  • “The benefits of e-invoicing are the same as those of a standard PDF.” No, a PDF is merely an image-based document without structured data for automated processing.
  • “Peppol only works in Slovakia.” No, it is a pan-European network used in several EU Member States.

Conclusion

e-invoice reduces manual work and errors through structured data and supports interoperable exchange through Peppol; from 2027 it is also mandatory for the specified domestic B2B and B2G supplies.

Legal basis

  • Official methodological and information materials Financial Administration of the Slovak Republic k e-invoice
  • Act No. 222/2004 Coll. on VAT, Section 76a a Section 85o

Related questions

This is not legal advice. Sources: Act No. 222/2004 Coll. on VAT, official methodological and information materials from the Slovak Financial Administration on e-invoicing. Verified on 9 July 2026.

Official cases from the Slovak Financial Administration’s FAQs

The following questions and answers are taken from the current July FAQ from the Financial Administration and have been assigned to this topic. Grouping the cases prevents the creation of duplicate pages, whilst retaining the full answer and the exact wording of the question.

Example No. 2: Why use e-invoice?

Using e-invoices offers benefits such as: • automated invoice processing without manual data entry, • time savings and a reduction in error rates, • simple and secure data transfer, • the ability to issue invoices across the whole of the EU (within the Peppol network), • compliance with Slovak and EU legislation on electronic invoicing.

Primary source: Financial Administration of the Slovak Republic, FAQ 9/VAT/2025/IM k e-invoice, July 2026 update. Processed and checked on 13 July 2026.