Free analysis for accounting firms
Let's check which of your clients are ready for e-invoices
Send us a list of client tax numbers. We will check which ones only receive, which ones both receive and send, and which ones still need to be addressed. We will prepare templates for notifications.
Free and without obligation. Tax numbers are sufficient.
List submission
Send client list for analysis
Attach an export from your software (Excel, CSV, or PDF). If you don't have the list at hand or don't know how to prepare it, let us know in the notes and we will help you.
Data Confidentiality
The client list remains with us
- We use the data exclusively for preparing the analysis.
- We do not forward the list to third parties.
- We do not contact your clients based on the list without your knowledge.
- Upon completion of the analysis, we delete the list at your request.
We process data as a processor according to your instructions, in compliance with GDPR. If you have a data processing agreement in place, we will arrange it before the analysis.
How the analysis works
Send tax numbers, get an overview and notifications
A basic list is sufficient. No special preparation needed; an export from your software is perfectly fine.
Your clients' tax numbers
You can also add company names, but it's not mandatory.
Only Slovenian tax numbers, as only these can be verified in the system.
Client overview by groups
Notification templates
Send them under your own name.
Next steps
Paths to e-invoices
You and the client decide together which path suits them, based on how they currently issue invoices.
Group A: Already has an e-path
Checks receiving and sending.
Group B: Has software with e-invoices
Activates e-invoices in their software.
Group C: Word or Excel
bizBox web application, data goes into your software.
Group D: More complex case
We prepare the implementation together.
Both receiving and sending must be set up. The client must be able to receive and send e-invoices. The original is the structured invoice; the PDF is only its display.
Next Step
Once you have the client overview
No Fine Print
Frequently Asked Questions
Brief answers to questions we most frequently receive from accounting services.
How much does the analysis cost?
It is free for accounting firms. It is not conditional on joining the referral program or making a purchase.
What counts as an e-invoice from January 1, 2028?
Structured XML (e-SLOG, UBL, or CII), sent via an authorized e-path: through an e-path provider, Peppol, direct connection, or FURS application. PDF via email, XML as an email attachment, scans, and invoices from Word or Excel are not e-invoices.
What about clients who write invoices in Word or Excel?
The bizBox web application is available for them, and the data goes into your accounting software. You and the client decide together which path suits them.
What if a client already has their own provider?
We see this in the analysis. We also show whether they only have receiving established or also sending, as receiving alone is not enough.
Do I have to refer clients to you?
No. You can use the analysis solely for yourself to know which clients will call you first in 2027. What you advise each remains your decision.
Do you or the client place the order?
Both are possible. You can place an order on behalf of the client or direct them to us, and they handle the process themselves.
What happens to the client list?
We use it exclusively for preparing the analysis, do not forward it to third parties, and do not contact your clients based on it without your knowledge. Upon completion, we delete it at your request.
ZZI d.o.o. · bizBox · Status: November 2026