Slovak Tax Authority × Modulario
Connection to Slovak Tax Authority systems — eKasa, VAT return, VAT control statement, EC sales list, and electronic accounting (e-PO). Full legal compliance for SK companies.
Tax Authority (FS SR)
Public sector
Modulario
ERP + CRM platform
What the integration actually solves
eKasa — sales fiscalization
Receipts from Modulario are sent to a certified eKasa client and on to the tax authority. Modulario is registered as a Protected Data Storage (CHDU).
VAT return
Modulario prepares the monthly/quarterly VAT return based on issued and received invoices. XML export for the FS portal or direct API submission.
VAT Control Statement (KV DPH)
We generate the KV DPH per Act 222/2004 in XML format (sections A.1, A.2, B.1, B.2, B.3, C.1, C.2, D.1, D.2). Duplicate detection and partner matching included.
EC Sales List for EU supplies
For intra-Community supplies of goods to the EU we generate the EC Sales List with partner VAT IDs. Quarterly or monthly filing.
Electronic signing with qualified signature
All filings are signed with a qualified electronic signature (KEP) via eID / Disig / CA Bratislava. Submissions carry verifiable timestamps.
Connect in minutes
- 1 Register on the FS SR portal (financnasprava.sk) as an electronic filer.
- 2 Obtain the authentication file (BOK) or connect an eID card for OAuth.
- 3 In Modulario, open Settings → Integrations → Tax Authority and enter the VAT ID, VAT registration number, and authentication details.
- 4 Enable the eKasa module — you need a register identifier (DKP) assigned by FS SR.
- 5 Generate the first test VAT output and verify it in the FS portal before real submission.
- 6 Configure the auto-submission calendar (by the 25th of the month following the period).
Frequently asked questions
Is Modulario a certified eKasa client?
Modulario partners with a certified eKasa client (e.g. Varos, Atomi) that handles the CHDU and FS communication. For the customer the experience is transparent.
Do you support the VAT rate changes effective 1 Jan 2025?
Yes — Modulario is updated to the new VAT rates effective 1 Jan 2025 — standard 23%, reduced 19% (selected food, medicines, books, restaurants), and 5% (exempt basic food and medicines).
What about reverse-charge and the special supply regime?
Modulario automatically detects reverse-charge based on partner VAT ID and the supply type (construction work, mobile phones, scrap metal). Data flows to the correct section of the KV DPH.
What if FS SR rejects our submission?
We receive an error message with a code. Modulario shows it, identifies the issue (missing VAT ID, invalid amount, duplicate), and offers a fix with resubmission.
Need to connect Tax Authority (FS SR) with Modulario?
We'll show a live demo of the integration on your data. We know both systems in depth.
