GSTIN Number Regular Expression

Category: Numbers

A regular expression to match a valid 15-digit GSTIN number (Goods and Services Tax Identification Number) in India, which is a unique identification number issued by the Ministry of Finance, Government of India (the MFIN) for a business entity registered under the Goods and Services Tax (GST) Act.



  • 18AABCU9603R1ZM
  • 22AABCU9603R1ZX
  • 07AABCU9603R1ZP


  • 181AABCU9603R1Z
  • AABCU9603R1ZX
  • 7AABCU9603R1ZP

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Expression Flags

Flags Description
i Ignore case sensitive.
g Allows global search.
m Allows multiline search.