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Tools/SIT X-Ray/U.S. Individual Taxpayer Identification Number (ITIN)

U.S. Individual Taxpayer Identification Number (ITIN)

live testingcurated4 patternsproximity 300recommended confidence 75 (medium)

Nine digits starting with 9, with the fourth and fifth digits in the ranges 50-65, 70-88, 90-92, or 94-99. Formatted or unformatted.

This SIT contains a "not any of these" exclusion group: a match is suppressed if it is preceded by "Phone Conference ID:". Microsoft added that because Teams conference IDs were lighting up ITIN detections. Your own custom SITs can use the same trick.

The patterns, as the engine reads them

confidence 85 (high)
  • Primary: Func_formatted_itin: ITIN with separators: 9, two digits, separator, fourth/fifth digits in 50-65, 70-88, 90-92, or 94-99, separator, four digits.
  • Not any of these:
    • Keyword_itin_false_positives_prefix: 1 keyword (word match), e.g. "Phone Conference ID:"
  • Required: Keyword_itin: 12 keywords (word match), e.g. "taxpayer", "tax id", "tax identification"
confidence 75 (medium)
  • Primary: Func_unformatted_itin: ITIN as nine consecutive digits: starts with 9, fourth/fifth digits in 50-65, 70-88, 90-92, or 94-99.
  • Not any of these:
    • Keyword_itin_false_positives_prefix: 1 keyword (word match), e.g. "Phone Conference ID:"
  • Required: Keyword_itin: 12 keywords (word match), e.g. "taxpayer", "tax id", "tax identification"
confidence 65 (low)
  • Primary: Func_formatted_itin: ITIN with separators: 9, two digits, separator, fourth/fifth digits in 50-65, 70-88, 90-92, or 94-99, separator, four digits.
  • Not any of these:
    • Keyword_itin_false_positives_prefix: 1 keyword (word match), e.g. "Phone Conference ID:"
confidence 65 (low)
  • Primary: Func_unformatted_itin: ITIN as nine consecutive digits: starts with 9, fourth/fifth digits in 50-65, 70-88, 90-92, or 94-99.
  • Not any of these:
    • Keyword_itin_false_positives_prefix: 1 keyword (word match), e.g. "Phone Conference ID:"
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