Help: Tax ID (ΑΦΜ) Verification
The page has two tabs: checking a single Tax ID (ΑΦΜ), or checking an entire list of Tax IDs at once.
1
Tax ID Check
- ΑΦΜ
- Enter the 9-digit Tax Registration Number (ΑΦΜ). Numbers only, no spaces or dashes.
Μετά τον έλεγχο θα δείτε:
- If it is valid: a green confirmation message.
- Επαλήθευση VIES: if the Tax ID is valid, the application also automatically checks the European VIES database — if it is registered for VAT, it shows the company name and address (if available).
- If it is not valid: a red message, and the application automatically tries "nearby" variations (1 wrong digit) — if one turns out valid, it suggests it in a table where you can check it with one click.
Check
Valid Tax ID
VIES:
Company name: ΕΤΑΙΡΕΙΑ Α.Ε.
Company name: ΕΤΑΙΡΕΙΑ Α.Ε.
2
Tax ID List Check
Useful when you have many Tax IDs to check at once (e.g. a list of suppliers/customers).
Valid: 2
Invalid: 1
- Paste the Tax IDs one below the other (or copy-paste a column directly from Excel — the application recognizes tab-separated data).
- If your list has a column header (e.g. the title "ΑΦΜ" in the first row), check "The first row contains headers" so it isn't checked as a Tax ID.
- The result shows a table with all the Tax IDs, color-coded by validity, with VIES details where available, and summary counters (Valid / In VIES / Invalid / Total).
Frequently asked questions
The basic validity check only checks the check digit (mathematical structure). VIES verification additionally shows whether it is registered for VAT and the company details, if publicly available.
Either the Tax ID is not registered for intra-community VAT (e.g. it belongs to a private individual or a small business outside VIES), or the details are not published due to personal data protection.
If the Tax ID you entered is invalid, the application tries nearby variations (e.g. in case of a typo in one digit) and shows those that turn out valid, so you can check whether you made a mistake.
There is no strict limit — you can paste large lists. For very large lists, processing simply takes a little longer.