Key dates for e-invoicing in Slovakia
Slovakia is advancing toward a fully digital and compliant invoicing ecosystem. Here are the key milestones to stay ahead of.
2025
Voluntary participation in the IS EFA platform begins.
2026
Pilot programs and technical onboarding continue.
January 2027
Mandatory domestic B2B e-invoicing takes effect for VAT-registered businesses.
This mandate currently affects e-invoicing, not e-reporting.
E-invoicing
Mandatory
Mandatory for domestic B2B transactions
E-reporting
Not yet in scope
The Mandate
Who is in scope in Slovakia?
B2B
Mandatory (From January 1, 2027)
B2G
Supported
B2C
No mandate
Cross-border
Not currently mandated
Future expansion expected
Invoice formats
Supported formats in Slovakia
Invoices must comply with Slovakia's e-invoicing mandate using one of the following approved formats.
Peppol BIS Billing 3.0
UBL 2.1
EN 16931 XML
Companies affected in
Slovakia
All VAT-registered businesses established in Slovakia
(for domestic B2B transactions)
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