How much does a managed custom connection cost?

A one-off fee, priced by scope (formats, number of companies, way of connecting). Write to peppol@verteco.digital or call +421 944 488 269 (Mgr. Miriama Mrkávková) and we will propose the exact procedure and price.

How much does it cost?

The service costs from €2/month excl. VAT per company ID (IČO) that sends or has the Data archive switched on (the default for new companies): receiving, sending and the archive of originals in the EU. A company with the archive off that only receives pays nothing (up to 1,000 invoices a month). During the voluntary period before the mandate of 1 January 2027 everything is free of charge.

Integrations / ERP systems / Tangram EOS

E-invoices for Tangram EOS

Connection built in by the vendor

Tangram EOS is a Slovak business and accounting system by Tangram SW for retail, gastronomy, manufacturing, warehouses and accounting offices. Tangram EOS has API communication with three digital postmen built in, Verteco being one of them: after the postman credentials are entered in the program, issued invoices leave Tangram directly and received ones are loaded into it, without files. With us you receive e-invoices through the Peppol network right away and without touching the system (free until 31 December 2026, then from €2/month per company ID). Generate an API key in the portal (client_id and client_secret), enter it in Tangram EOS following the vendor guide and choose the interval of automatic sending and receiving. The connection is built into Tangram EOS by the vendor: you enter the Verteco postman credentials in the program (client_id and client_secret from the portal) and sending as well as receiving run automatically; the vendor guide on tangram.sk describes the procedure.

Vendor website: www.tangram.sk ↗Návod výrobcu: prepojenie Tangram EOS s digitálnymi poštármi ↗

Create a free account Check your XML in the validator

The honest current state

•The connection is built into Tangram EOS by the vendor: you enter the Verteco postman credentials in the program (client_id and client_secret from the portal) and sending as well as receiving run automatically; the vendor guide on tangram.sk describes the procedure.
•The connection through the SAPI-SK REST interface (OpenAPI, public sandbox) works today.
•Receiving e-invoices and the portal work today, independently of the system.

API documentation (SAPI-SK, OpenAPI, webhooks) →Sample UBL e-invoices (16 verified documents) →Free e-invoice validator →

The path that works today

1Activate your account: receiving e-invoices (PDF and XML by e-mail, portal, exports) works right away and without changing the system, free until 31 December 2026.
2Generate an API key in the portal (client_id and client_secret), enter it in Tangram EOS following the vendor guide and choose the interval of automatic sending and receiving.
3The connection is built into Tangram EOS by the vendor: you enter the Verteco postman credentials in the program (client_id and client_secret from the portal) and sending as well as receiving run automatically; the vendor guide on tangram.sk describes the procedure.

What you have right away

✓Receiving e-invoices works right away and independently of your ERP (Peppol Box in the portal)
✓PDF and the original XML of every received invoice by e-mail and for download
✓CSV/XML export of received and sent documents for your accounting
✓Free validator: XML checked against EN 16931 / Peppol BIS 3.0 before sending
✓Sending e-invoices through the portal in a few clicks, without touching the ERP
✓Delivery receipts (MLS) and the status of every invoice in the Verteco portal
✓The tax report to the Financial Administration (TDD) is handled by our Access Point automatically

Frequently asked questions: e-invoices for Tangram EOS

Is there a Verteco module for Tangram EOS?: The connection is built into Tangram EOS by the vendor: you enter the Verteco postman credentials in the program (client_id and client_secret from the portal) and sending as well as receiving run automatically; the vendor guide on tangram.sk describes the procedure.
How do I connect Tangram EOS to the Peppol network today?: Tangram EOS has API communication with three digital postmen built in, Verteco being one of them: after the postman credentials are entered in the program, issued invoices leave Tangram directly and received ones are loaded into it, without files. Through SAPI-SK you send the UBL XML (Peppol BIS 3.0) and get the delivery status; the documentation and OpenAPI are public, the sandbox is free.
How much does a managed custom connection cost?: A one-off fee, priced by scope (formats, number of companies, way of connecting). Write to peppol@verteco.digital or call +421 944 488 269 (Mgr. Miriama Mrkávková) and we will propose the exact procedure and price.
How much does it cost?: The service costs from €2/month excl. VAT per company ID (IČO) that sends or has the Data archive switched on (the default for new companies): receiving, sending and the archive of originals in the EU. A company with the archive off that only receives pays nothing (up to 1,000 invoices a month). During the voluntary period before the mandate of 1 January 2027 everything is free of charge.

Start today: selecting us on the Financial Administration portal is enough

Receiving is free · no lock-in, no hidden feesMeet your 2027 legal obligation in 2 minutes

Choose Verteco on the Financial Administration portal →On the portal, click “Pokračovať” (Continue), sign in (slovensko.sk / eID or your FS portal credentials) and confirm the selection. We handle the rest automaticallyCertified provider of the Financial Administration (EFSK000031) · no commitment · you can change providers at any time

How does the selection work? (3 steps, ~2 minutes)

1Click the button above. The official Financial Administration page “Certified provider selection” opens with Verteco pre-selected. Click “Pokračovať” (Continue).
2Sign in to the Financial Administration portal, via slovensko.sk (eID / ID card with a chip) or with your PFS credentials, and confirm the provider selection.
3Done. A sign-in e-mail arrives. We create your account, company and Peppol network registration automatically. If another provider already holds your receiving record, we do not take it over: you get the migration-code procedure, or you choose in the portal that receiving stays with them and you only send through us.
No eID? You can also sign in to the Financial Administration portal with your PFS identifier and password. Or register here with an e-mail and password, add your company manually and finish the selection later.
Your company is not offered in the “taxpayer selection” step? Only entities you are authorised for on the FS portal appear. Add the authorisation in your Personal Internet Zone (Autorizácie → Pridať autorizovaného používateľa), then finish the selection.
Detailed guide to the FS portal selection (in Slovak) →