Tools · no account
Tools for checking company details
Company IDs, EU VAT numbers, accounts and a manual Czech partner checklist. Calculations run in your browser.
Your input stays in your browser
Company & payments
Company ID & VAT check
Check Czech and Slovak IČO checksums and EU VAT number formats.
Open toolAccount & IBAN check
Czech and Slovak account conversion and international mod 97 checks without uploading inputs.
Open toolPartner checklist
A manual guide for overseas users checking Czech companies in primary registers.
Open toolCZ-NACE converter
Convert and search the official Czech Statistical Office activity codes (CZ-NACE 2008 → 2025).
Open toolHow it works
Inputs stay in your browser. Calculations do not establish company existence, tax registration, account existence or recipient identity.
Only an anonymous event category is sent after analytics consent.