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VAT Checker Ireland (IE)

Validate an Irish VAT number locally (no network): format, normalization (optional IE prefix), and checksum for common Ireland patterns.

This tool does not confirm VIES registration status—only whether the number looks structurally valid.

Category: Finance · URL: /tools/vat-checker-ireland.html
Result
Accepted patterns (common)
  • 7 digits + check letter (8 chars): 1234567T
  • 7 digits + extra letter + check letter (9 chars): 1234567AF
  • digit + letter + 5 digits + check letter (8 chars): 1A23456P

          

          

            Privacy: runs locally in your browser. No uploads, no tracking scripts.
          

        

      


      
    


    

      
How to use

      
Use this when you need a quick format + checksum check for Ireland (IE) VAT numbers.
  1. Paste the VAT number (with or without the IE prefix).
  2. Click Validate.
  3. Read the result (valid/invalid), normalized value, and expected check letter.

      

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        Secondary intents covered: Validate an Irish VAT number’s checksum locally, Normalize a VAT number (remove IE prefix, spaces, hyphens), Identify which Irish VAT pattern the input matches (8/9 chars), Explain why a VAT number fails validation (format vs checksum), Generate or test sample inputs for QA (format-only), Copy a compact validation result for emails or tickets, Compare Ireland VAT formatting with other country checkers
      

    


    

      
FAQ

    
Does this tool check if an Irish VAT number is registered in VIES?
No. It only checks common Ireland (IE) VAT formats and validates the checksum locally.
Should I include the IE prefix?
Either is fine. The tool accepts inputs with or without IE and normalizes it out.
What Irish VAT formats are supported?
It supports common patterns: 7 digits + check letter, 7 digits + extra letter + check letter, and digit + letter + 5 digits + check letter.
Why does a VAT number fail even if it looks right?
Most failures are checksum mismatches (the final letter doesn’t match the calculated check letter) or the input doesn’t match a supported pattern.
Can I paste VAT numbers with spaces or dashes?
Yes. The tool removes spaces and punctuation and uppercases letters before validating.
Are the examples real VAT numbers?
No. Examples are for format/checksum demonstration only and shouldn’t be treated as real business identifiers.
What does “valid” mean here?
“Valid” means the input matches a common Irish VAT structure and the checksum calculation matches—nothing more.