Let's Decode GST Number.

A Goods and Services Tax (GST) number, also known as a GSTIN (GST Identification Number), is a unique identification number assigned to businesses registered under the GST system. The format and structure of a GST number can vary depending on the country. However, I will explain how the GST number in India is typically read.

In India, a GST number is a 15-digit alphanumeric code. Let's break it down into its components:

1. State Code: The first two digits of the GST number represent the state code where the business is registered. Each state in India is assigned a unique two-digit code. For example, the state code for Maharashtra is 27.

2. PAN (Permanent Account Number): The next ten characters in the GST number are based on the business's PAN, which is issued by the Income Tax Department of India. The PAN consists of five alphabets, followed by four numerals, and ends with an alphabet (e.g., ABCDE1234F).

3. Entity Code: The thirteenth digit of the GST number indicates the entity code. It is assigned based on the number of registrations a business has within a state. The entity code can range from 1 to 9 or can be an alphabet (A to Z).

4. Checksum: The last two characters of the GST number are used for the checksum. It is calculated based on the preceding 13 digits of the GST number using a specific algorithm. The checksum helps verify the accuracy of the GST number.

To read a GST number in India, you would typically start by identifying the state code, followed by the PAN, entity code, and checksum. For example, a sample GST number in India could be read as "27ABCDE1234FA1".

Remember that this explanation specifically applies to the GST number format in India. If you are referring to the GST number format of another country, it's important to consider the specific rules and structure applicable in that jurisdiction.