Verify Tax Code
Instantly check the validity of an Italian Tax Code
The Tax Code verifier automatically checks the formal correctness of the entered code. It verifies the format, CIN check character, date consistency and automatically recognizes codes with omocodia.
Verify Tax Code
Check the validity of a Tax Code
What We Check
- Correct length (16 characters)
- Valid format (letters and numbers in correct positions)
- Correct CIN check character
- Birth day consistency (1-31 or 41-71 for women)
- Valid birth month (A-T excluding unused letters)
- Automatic omocodia detection
⚠️ Important
This tool verifies the FORMAL correctness of the tax code. It cannot confirm if the CF is actually associated with a real person. For official verification, contact the Revenue Agency.
FAQ
What does invalid CIN mean?
The CIN (check character) is calculated on the first 15 characters. If it doesn't match, the code contains a transcription error.
Does it verify omocodia codes?
Yes! The system automatically recognizes codes with omocodia and verifies them correctly, even with multiple substitutions.
Can I verify if a CF really exists?
No, only the Revenue Agency can confirm the association between CF and a real person. We only verify formal correctness.