# Choosing and changing your provider

URL: https://postman.slovakodata.com/help/en/povinnosti/vyber-postara/
Updated: 2026-09-17

How a provider is chosen, why only one can receive on your behalf, and what happens when you move.

**You choose your delivery service provider — not your customer, and not the
tax authority. For receiving invoices you can have only one at a time, the one
registered in the central SMP. You can move to another provider at any point;
the previous one has to deregister you first.**

Invoices do not travel between companies directly. They are carried by a
**delivery service provider**, known in Slovakia as a digital postman.

### Who accredits providers

The Peppol Authority of the Slovak Republic is the **Financial Directorate of
the Slovak Republic**. It holds delegated competence from the Peppol
coordinating authority and is responsible for accrediting service providers,
maintaining the national implementation rules, and promoting the use of
e-invoicing.

The list of certified providers is published by the financial administration
on its website and updated continuously.

Provider certification is an ongoing process. A given provider appears on the
list immediately after successfully completing it, so it is worth watching
the list rather than relying on its state on any single day.

**ePostman on the list.** The operator of this service, SLOVAKODATA, a.s., is
listed among the certified providers under the identifier **PA SK ID
EFSK000024**. That is how you verify us on the financial administration's
list.

### One provider for receiving, several for sending

This detail surprises most companies:

- **For receiving**, a party can have only **one** provider registered for a
  given Participant ID — the one recorded in the SMP. Inbound invoices are
  therefore routed unambiguously, and the accounting system does not choose a
  provider on receipt.
- **For sending**, a party may have contracts with **several**. Which one is
  used is a matter of accounting-system configuration and the contractual
  relationship.

This is precisely why SMP registration cannot exist twice. When you move to
another provider, the previous one must deregister you from the central SMP —
otherwise your invoices would keep arriving at them.

### Moving to another provider

The financial administration does not intervene in the move; it is a matter
between you and the providers. The previous provider deregisters you from
the central SMP **within three working days**.

In practice this means a short window during which the registration changes.
Plan the move so that it does not fall on a day when you expect an important
invoice.

### What to check when choosing

Beyond price, it pays to look at the things that only show up in operation:

- **Does the provider publish service status?** During an outage this is the
  evidence that can avert a penalty (see [Deadlines, reporting and
  penalties](/help/en/povinnosti/lehoty-a-sankcie/)).
- **Does it support the way you work?** A web portal, an API connection from
  your accounting system, or both.
- **How does it handle archiving?** Invoices must be retained for ten years
  in XML.
- **What happens when you leave?** SMP deregistration and a document export
  should be a given, not a surprise.

The financial administration estimates the average price of a simple digital
postman application across the EU at **EUR 5 to 12 per month**. Treat that as
a rough frame rather than a price list — models differ (flat fee versus pay
per sent document).

### Source

Financial Directorate of the Slovak Republic, **9/DPH/2025/IM — Frequently
asked questions on eInvoicing**. Contact for the Slovak Peppol Authority:
`efaktura@financnasprava.sk`.

## Frequently asked questions

### Can I use several delivery service providers at once?

Not for receiving — the central SMP always holds exactly one provider that accepts invoices on your behalf. For sending there is no such limit and you can use more than one solution.

### How do I move to another provider?

You sign a contract with the new provider and the previous one deregisters you from the central SMP so the new one can register you. Plan the move for a period when you are not expecting important invoices.

### Does my customer also need the same provider as me?

No. Each side chooses its own. Your invoice travels from your provider to your customer’s provider over the Peppol network, so you do not need to know or match their choice.