Check Slovakia VAT numbers
Validate Slovak VAT numbers (IČ DPH) against the EU VIES registry. Slovak numbers are SK followed by 10 digits. Slovakia and the Czech Republic separated in 1993, and their VAT systems diverged: Slovak IČ DPH is always 10 digits, while Czech DIČ is 8-10. Every response includes the company name, registered address, and validity at query time.
Try it
curl -X POST "https://api.vatverify.dev/v1/validate" \ -H "Authorization: Bearer $VATVERIFY_KEY" \ -H "Content-Type: application/json" \ -d '{"vat_number":"SK2020317068"}'Facts
Format
- Prefix
- SK
- Digits
- 10
- Regex
- ^SK\d{10}$
SK2020317068SK2020317060SK202031706VAT rates (EUR)
selected foods, medicines, books, hotel accommodation
What we return for Slovakia
{
"data": {
"valid": true, // boolean validity at query time
"vat_number": "DE129273398",
"country": {
"code": "DE",
"name": "Germany",
"vat": { "standard_rate": 19 }
},
"company": {
"name": "SIEMENS AG", // legal entity name
"address": "..." // when VIES provides it
},
"verified_at": "2026-04-25T10:00:00Z"
},
"meta": {
"request_id": "019dc...", // for audit trail correlation
"source": "vies",
"source_status": "live", // live | cached | degraded
"cached": false,
"latency_ms": 234
}
}
Test against production VATs
Real numbers from publicly-documented corporate filings. Click to see the live result.
Watch out for
- Slovak IČ DPH is always 10 digits; Czech DIČ can be 8, 9, or 10. A 10-digit number without context could be either; the SK/CZ prefix is the only reliable differentiator.
- Not every Slovak IČO (company registration code) has an associated IČ DPH. VAT registration is separate and mandatory only above the turnover threshold.
- Slovakia applies the 10% reduced rate to a specific list of goods; applying it broadly to "food" without checking the MFSR list can cause under-billing.
IČ DPH is the EU-facing VAT identifier
Slovak VAT numbers are 10 digits prefixed with SK. The full
structure is SK followed by exactly 10 digits.
The domestic identifier is the IČ DPH (Identifikačné číslo pre daň z pridanej hodnoty), the dedicated VAT registration number. It is distinct from the broader DIČ (Daňové identifikačné číslo), the general tax identification number, although the two often share their numeric content.
vatverify validates SK\d{10} and routes through VIES. The Slovak
IČ DPH carries a check digit that is verifiable offline; numbers
that fail it are rejected before the registry call.
Finančné riaditeľstvo is the tax authority
The Slovak tax administration is the Finančné riaditeľstvo SR (Financial Directorate of the Slovak Republic), with operational units in regional offices (daňové úrady). The Directorate maintains the VAT register and pushes updates to VIES on a regular batch cadence.
The Slovak public lookup portal at financnasprava.sk exposes domestic VAT details including registration date, deregistration date, and reliability rating. For VIES-equivalent checks the public portal is the right tool when you need additional fields beyond the binary valid flag.
VAT rates
Slovakia runs three rates: 23% standard, 19% reduced, and 5% reduced. The 19% bracket covers food and several other categories that were moved from the standard rate as part of the 2025 fiscal package; before that change the standard rate was 20% with a 10% reduced rate. Date-aware lookups against current Finančné riaditeľstvo publications are the safer default; rates from before the 2025 change will be incorrect for current invoices.
Reverse-charge for several sectors
Slovakia applies domestic reverse-charge to scrap metal, mobile phones, integrated circuits, gas, electricity, cereals, and construction services, mirroring rules applied across several member states. These rules apply between two Slovak VAT-registered businesses and are independent of EU intra-Community reverse-charge.
If you build invoicing logic for these sectors, the domestic reverse-charge is the default treatment between Slovak counterparties.
Cross-border with neighbours
Slovakia borders the Czech Republic, Poland, Hungary, Austria (all EU), and Ukraine (third country). Standard EU intra-Community reverse-charge applies to B2B supplies between Slovakia and other-EU VAT-registered businesses.
The Czech Republic and Slovakia maintain particularly active trading relationships from the pre-1993 federation. Both jurisdictions apply standard EU rules; there is no special bilateral VAT regime between them.
Reliability rating: Slovakia's domestic risk signal
Slovakia publishes a zoznam nespoľahlivých platiteľov DPH (list of unreliable VAT payers) maintained by the Finančné riaditeľstvo. Domestic Slovak buyers transacting with a counterparty on the list risk losing VAT deductibility on those invoices.
For non-Slovak counterparties the unreliable-payer list does not affect the cross-border reverse-charge mechanism, but it is a useful additional signal when assessing a Slovak counterparty's operational standing. The list is separate from VIES.
Caching against the Finančné riaditeľstvo cycle
The Slovak tax authority pushes registration changes to VIES on a regular batch. Newly-registered IČ DPH values are generally visible in VIES within 24 to 48 hours. vatverify's default TTLs (30 days for valid, 24 hours for invalid) line up with this cadence.
Automate Slovakia VAT checks in your stack
Replace manual lookups with one API call against VIES. Drops into invoicing, checkout, and signup flows in any language. 500 free validations per month, no credit card.