For accountants and accounting firms

All your clients' e-invoices in one place — free.

From 2027, e-invoicing will be mandatory in Slovakia. For accountants, that means dozens of new portals, inconsistent formats, and lost oversight. ePošťák fixes that — one portal for all your clients, one-click export to your accounting software.

Try it freeWhat's changing

Free forever · No credit card · No commitment

01The problem

Mandatory e-invoicing is changing the rules for accountants

Until now, the workflow was simple — clients sent you invoices by email or handed over paper copies. You entered them into your accounting software and moved on.

From 1 January 2027 everything changes. Every business in Slovakia will be required to send and receive invoices electronically through a certified digital mailbox provider. Invoices will be in structured UBL format, routed through the international Peppol network, and recorded by the Financial Administration of the Slovak Republic in real time.

For accountants, this creates concrete problems:

  • 01

    Every client will pick a different provider

    Multiple digital mailbox providers will compete on the market. If you manage 50 companies, you could end up logging into 50 different systems — each with its own interface, its own export format, its own credentials.

  • 02

    Formats will unify, but workflows won't

    E-invoices will all use the standard UBL format, but every provider will display them differently and offer different export options. Manual downloads and data entry may not go away — they'll just move from your inbox to a web portal.

  • 03

    Losing oversight

    When did a client's invoice arrive? Did the supplier actually send it? Was it delivered? Without a central place to check, you lose track of what's happening across your clients.

02The solution

One portal instead of ten systems

When your client chooses ePošťák as their digital mailbox provider, their e-invoices appear automatically in your accountant portal. All clients, all invoices — in one place.

Before

Client sends invoices by email or paper

Now

All e-invoices in one portal

Before

Manually re-keying data from PDFs into software

Now

One-click export to your accounting software

Before

No way to know if a client's invoice arrived

Now

Real-time delivery status

03Accountant portal

What working with e-invoices actually looks like

The portal works in read-only mode — you see all your clients' documents but cannot modify them. Zero risk of accidental changes, no unnecessary access.

ePošťák accountant portal — all clients' e-invoices in one place
01Overview of all clients' invoices. Switch between companies in one click, filter by date and status.
Client detail in the ePošťák accountant portal — incoming invoices, VAT and latest export
02Client detail with incoming invoices, statuses, VAT summary and missing-data checks.
E-invoice export to accounting software — Pohoda, Omega, Money S3, ISDOC
03Export to your software — choose clients, pick a format (Pohoda, Omega, ISDOC, Money S3, CSV) and download prepared batches.

The switch to e-invoicing isn't just stressful for business owners — it's a major shift for accountants too. That's why we built a tool that makes your work easier, not harder.

Select the invoices, click "Export to accounting software", and pick your format — Pohoda XML, Omega TXT, ISDOC 6.0, Money S3 XML, or CSV for Excel. No manual data entry, no downloading files one by one. More on accounting software integrations in our dedicated article.

04How it works

Three steps to full visibility over your clients' e-invoices

  1. 01

    Register as an accountant

    Enter your name and email. Takes one minute. No credit card, no commitment. We'll have your portal ready before mandatory e-invoicing kicks in.

  2. 02

    Your client picks ePošťák on the Financial Administration portal

    Send your client a registration link. They sign up, choose ePošťák as their digital mailbox provider on the Financial Administration of the Slovak Republic portal, and their account connects to yours automatically. The whole process takes a few minutes.

  3. 03

    You see their invoices and export to your software

    All of the client's incoming and outgoing e-invoices appear in your portal. Select them, choose an export format — Pohoda, Omega, Money S3, ISDOC, or CSV — and download. Done.

05Benefits

Why accountants choose ePošťák

010 €

Free forever

The accountant portal is and will always be free. Your clients pay for their digital mailbox service — you pay nothing to access their invoices.

021 / N

All clients in one place

No more logging into different systems. One portal, one login, visibility across all your clients.

03RO

Read-only mode

You can view and export client documents, but you can't accidentally delete or edit anything. Safe for you and for your client.

045×

Export to five formats

Pohoda XML, KROS Omega TXT, ISDOC 6.0, Money S3 XML, CSV for Excel. Select invoices, pick a format, download.

05◐

Automatic notifications

Get notified the moment a new invoice arrives for a client. No need to log in and check every day — the system alerts you.

06∞

No client limit

Managing 10 clients or 500? The portal is built for accounting firms of every size.

06Timing

Why it pays to register now

Mandatory e-invoicing in Slovakia takes effect on 1 January 2027. The Financial Administration of the Slovak Republic portal, where businesses will choose their digital mailbox provider, is expected to launch during 2026.

Register now and we'll have your portal ready before the mandate takes effect. When your first client switches to ePošťák, everything will already be in place — no waiting, no last-minute scramble.

For a full picture of what's changing for accountants, read our guide to e-invoicing for accountants. We've also put together a practical checklist for accounting firms and a step-by-step guide to onboarding your clients.

07Always free

What you get for free

  • 01Portal for unlimited clients
  • 02Export to Pohoda, Money S3, KROS Omega, ISDOC, and CSV
  • 03Full view of all incoming and outgoing documents
  • 04Automatic notifications for new client invoices
  • 05Read-only mode — no risk of accidental changes
  • 06You pay nothing — ever
08FAQ

Accountants' frequently asked questions about e-invoicing

No, never. The accountant portal is completely free. Your clients choose a plan that fits their needs — you pay nothing for management and export access.
From 1 January 2027, electronic invoicing will be mandatory for all businesses in Slovakia. Your clients will have to choose a digital mailbox provider — you can recommend ePošťák and make the transition easier for both sides.
We support export to Pohoda XML, Money S3 XML, KROS Omega TXT, ISDOC 6.0, and CSV for Excel. SuperFaktúra format is in progress. If your software isn't listed, let us know — we'll expand our support.
Not at all. The portal has no limit on the number of clients. Switching between companies is one click. We designed it specifically for accounting firms with large client bases.
No. The portal operates in read-only mode. You can view client documents and export them to your software, but you can't change anything. Zero risk of unintended modifications.
Send your client a registration link. They sign up, choose ePošťák as their digital mailbox provider on the Financial Administration portal, and they're automatically linked to your portal. The whole process takes a few minutes.
A digital mailbox provider is a certified service that sends and receives electronic invoices through the international Peppol network. It acts as the intermediary between a business and the Financial Administration of the Slovak Republic. From 2027, one is required for every business entity in Slovakia.
No. You'll only receive notifications about new client invoices — and only if you turn them on yourself. No marketing, no spam, no unnecessary emails.
Invoices already delivered through ePošťák will remain accessible in the portal. New invoices will come through their new provider. Your archive stays intact.
09Sign up

Sign up for free early access

Leave us your contact details and we'll have your portal ready before mandatory e-invoicing begins. No credit card, no commitment.

  • ✓Free forever — no credit card
  • ✓We prepare your portal before the 2027 launch
  • ✓No marketing, no spam