Skip to main content

Slovakia TIN number guide

How Lookuptax can help you in VAT validation?

Lookuptax VAT validation revolutionizes VAT number validation with its robust platform, empowering businesses to seamlessly verify VAT numbers across over 100 countries. Our cutting-edge technology ensures accurate and efficient validation, reducing errors and enhancing compliance.

Frequently Asked Questions​

What is the difference between DIČ and IČ DPH, and which number goes on a B2B invoice?​

DIČ (Daňové identifikačné číslo) is the domestic tax ID assigned to every registered taxpayer — it covers income tax, payroll, and general tax filings, and is held by all businesses regardless of VAT status. IČ DPH (Identifikačné číslo pre daň z pridanej hodnoty) is the Slovak VAT registration number, formatted as SK followed by 10 digits, and is only issued upon VAT registration. On a Slovak B2B VAT invoice, both the supplier's and the customer's IČ DPH are mandatory fields; substituting the DIČ for the IČ DPH is a common error that renders the invoice non-compliant and blocks the buyer's input VAT deduction. Non-VAT-registered suppliers have no IČ DPH and must not charge VAT on their invoices. [1] [2]

Does a foreign company have to register for Slovak VAT immediately, with no minimum turnover threshold?​

Yes. Non-Slovak-established businesses that make taxable supplies in Slovakia must register for VAT with Finančná správa before or upon the first taxable transaction — there is no minimum threshold for non-residents. Registration takes up to four weeks, and the IČ DPH is only issued after approval; trading without it exposes the business to backdated VAT at the current 23% standard rate plus late-registration penalties. Domestic Slovak businesses face a different rule: mandatory registration applies once calendar-year taxable turnover exceeds €50,000 (effective 1 January 2025, calculated per calendar year rather than on a rolling 12-month basis, with immediate registration required if turnover reaches €62,500). EU businesses supplying digital B2C services below €10,000 EU-wide may use the OSS scheme as an alternative to direct Slovak registration. [1] [2]

Slovakia raised its standard VAT rate to 23% in January 2025 — what changed on existing invoices and contracts?​

The standard VAT rate rose from 20% to 23% on 1 January 2025, and a new 19% reduced rate replaced the former 10% rate (the 5% super-reduced rate was unchanged). The rate that applies is determined by when the tax liability arises — for a supply contracted before 1 January 2025 but delivered or paid after that date, the 23% rate applies to the portion of consideration received or the supply made on or after 1 January 2025. The simplified invoice threshold was also cut from €1,000 to €400: supplies above €400 must now be issued as full VAT invoices including the customer's IČ DPH. Businesses that issued quotes or signed fixed-price contracts under the old 20% rate should have renegotiated prices or absorbed the 3-percentage-point difference before delivery. [1] [2]

When does a Slovak company withhold tax on payments to a non-resident service provider, and what rates apply?​

Slovakia's Income Tax Act requires Slovak businesses to withhold tax at source when paying certain categories of income to non-residents, including royalties, licence fees, and specified services performed in Slovakia. The standard withholding rate is 19% for recipients in countries that have a tax treaty with Slovakia or are otherwise on the Ministry of Finance's list of cooperative jurisdictions. A punitive 35% rate applies to payments made to entities in non-cooperative (blacklisted) jurisdictions or where the beneficial owner cannot be identified. Dividends from profits earned from 2017 to 2023 and from 2025 onwards are subject to 7% withholding. Non-residents may claim treaty relief — typically a reduced or zero rate — by submitting a tax residency certificate to the Slovak payer before payment; without it, the domestic rate applies by default. [1] [2]

Slovakia is mandating B2B e-invoicing from 2027 — what must VAT-registered businesses do now to prepare?​

Slovakia's amended VAT Act (signed 16 December 2025) introduces mandatory structured XML e-invoicing for all domestic B2B and B2G transactions from 1 January 2027, with cross-border transactions following from 1 July 2030. Invoices must conform to the EN 16931 European standard and be exchanged through accredited Digital Postmen (certified intermediary service providers) operating on the national Peppol network administered by the Finančná správa. A voluntary pilot phase runs from January 2026, giving businesses time to certify their accounting systems and select a certified provider before the hard deadline. Businesses that issue invoices via e-kasa (electronic cash registers) for B2C transactions are not currently in scope but should monitor further legislative guidance. [1] [2]

How Lookuptax can help you in VAT validation?

Lookuptax VAT validation revolutionizes VAT number validation with its robust platform, empowering businesses to seamlessly verify VAT numbers across over 100 countries. Our cutting-edge technology ensures accurate and efficient validation, reducing errors and enhancing compliance.