GSTIN – Goods and Services Tax Identification Number

 

GSTIN – Goods and Services Tax Identification Number

GSTIN is a 15-digit unique identification number allotted to every registered taxpayer under the Goods and Services Tax (GST) system in India. It helps in identifying businesses and ensuring transparency in tax compliance.

Each GSTIN is structured as follows: Format Example: 29ABCDE1234F1Z5

Segment	Digits	Description
State Code	1–2	First two digits represent the state code (e.g., 27 for Maharashtra, 29 for Karnataka).
PAN Number	3–12	Next ten digits are the Permanent Account Number (PAN) of the taxpayer.
Entity Number	13	Thirteenth digit identifies the number of registrations on the same PAN in a state.
Default Alphabet	14	Usually 'Z', reserved for future use.
Check Code	15	Alphanumeric digit for error detection/validation.

Example Explanation: GSTIN: 29ABCDE1234F1Z5

• 29 – Karnataka (State Code)

• ABCDE1234F – PAN of the business 

• 1 – First registration of this PAN in Karnataka

• Z – Default value

• 5 – Checksum digit