A 15-digit GST number (Goods and Services Tax) in India has the following structure:
- The first 2 digits indicate the state code.
- The next 10 digits represent the taxpayer's PAN (Permanent Account Number).
- The next 2 digits are for the entity code, indicating the type of business entity (e.g., proprietorship, partnership firm, company, etc.).
- The last digit is the check digit, used for validation purposes.
For example, a 15-digit GST number may look like "07AAAAA0000A1Z8".
In this example, "07" represents the state code, "AAAAA0000A" represents the PAN, "1" represents the entity code, Z is by default and "8" is the check digit.