Slovakia VAT number: format and validation

By Remco from Avatcado

Format

SK followed by 10 digits. The local term is identifikacne cislo pre dan z pridanej hodnoty (IC DPH, Slovak).

Pattern: /^\d{10}$/

  • The IC DPH is distinct from the DIC (the plain tax ID): the IC DPH exists only once a business is registered for DPH
  • Financna sprava publishes a public list of VAT-registered subjects alongside VIES

Example of a registered number: SK2020273893

Check a Slovakia VAT number

Validated live against the Financna sprava SR (Financial Administration) (official register).

Enter a VAT number to see the live API response

Validate via API

The same validation as an API call, with the example number above:

curl "https://api.avatcado.com/v1/validate?vat_number=SK2020273893" \
  -H "Authorization: Bearer avat_live_your_api_key"
import Avatcado from "@avatcado/node";

const avatcado = new Avatcado("avat_live_your_api_key");
const { data, error } = await avatcado.vat.validate({
  vatNumber: "SK2020273893",
});

if (data?.data.valid) {
  console.log(`Registered: ${data.data.company?.name}`);
}

Free tier includes 500 validations per month. Get an API key or read the API documentation.

Frequently asked questions

What is the difference between ICO, DIC, and IC DPH?

ICO is the company identification number, DIC the general tax ID, and IC DPH the VAT number issued only after DPH registration. Only the IC DPH carries the SK prefix and validates in VIES.

When must a Slovak business register for VAT?

Since 1 January 2025 a business becomes a VAT payer when calendar-year turnover exceeds EUR 50,000 (with effect from the next year), or immediately when it exceeds EUR 62,500. Turnover is now measured per calendar year, not a rolling 12 months.

Related guides

VAT rate in Slovakia

The standard VAT rate in Slovakia is 23%. Reduced rates: 19%, 5%. See all Slovakia VAT rates.

Sources