What if I issue invoices only occasionally?
Short answer
Low invoicing volume does not itself create an exemption from the statutory rules. Choose a proportionate, simple solution that can create and deliver a compliant e-invoice whenever the obligation applies, instead of relying on the small number of invoices as a reason to bypass the required process.
Volume is not the main criterion
First, verify the VAT status and type of delivery.
A simple form
For low volume, web exposure or an external service may be sufficient.
Validation always
Even one invoice must be correct.
Don't forget to save
XML, preview and report belong to the document.
Detailed explanation
First, clarify who you are invoicing, whether you are a VAT payer and how many invoices you issue per year. You can then choose an appropriate solution. With just a few invoices per month, simplicity, validation and archiving are more important than automating every step.
As set out in the Act
The legal obligation does not depend on the number of invoices, but on compliance with the scheme’s conditions. The volume of invoices affects the practical solution, not the existence of the obligation itself.
Practical examples
- A consultant issues three B2B invoices a month and uses a simple web-based tool with validation.
- A company invoices a major partner once a year and must verify the partner’s requirements in advance.
- A non-VAT payer does not issue invoices under this scheme, but handles e-invoices received from suppliers.
Most common mistakes
- “I have very few invoices, so I don’t have to worry about anything.” The number of invoices isn’t the deciding factor.
- “A PDF is enough for a single invoice.” If you’re subject to the mandatory scheme, you need a structured document.
- “The solution can be anything.” Even a simple solution must include validation and archiving.
Conclusion
For occasional invoicing, use a proportionate compliant solution; low volume is not a substitute for assessing the statutory obligation.
Legal basis
- Act No. 222/2004 Coll. on VAT, Section 76a
- Act No. 222/2004 Coll. on VAT, Section 85o
- Financial Administration of the Slovak Republic e-invoice FAQ
Related questions
This is not legal advice. Sources: Act No. 222/2004 Coll. on VAT, Slovak Financial Administration e-invoicing FAQ, OpenPeppol BIS Billing 3.0 and the Slovak e-Invoicing Centre’s internal validation model. Verified on 6 July 2026.