Can be mass generated e-invoice from Excel, CSV or other source data from clients?
Short answer
Yes, this is a correct and practically feasible observation. If the client has its billing data arranged in a structured table (for example, in a CSV or XLSX file with clearly defined columns for items, amounts, rates VAT and customer identification), it is technically common and available solution to convert such data in bulk into valid XML format Peppol BIS Billing 3.0, instead of having to go to a completely new billing software.
CSV, XLSX and similar
A consistent column and format structure is key.
Commonly available solution
It does not require a change in client's workflow.
Valid XML
Must meet EN 16931 a Peppol BIS Billing 3.0 as with any other source.
Clients without their own ERP
Those who have worked only in tables.
Conclusion
Mass generation e-invoice from CSV, XLSX or similar structured sources is normally feasible and allows clients to continue working with tables without the need to switch to new invoicing software.
Sources
- Law No. 222/2004 Z. z. o VAT, § 74 a § 85o (as amended by Law No. 385/2025 Z. z.)
- EN 16931 a Peppol BIS Billing 3.0
Not legal advice. Machine-translated answer, not yet manually reviewed. For the exact wording, see the Slovak original.