What is the Checksum Digit Decoding Algorithm in GSTIN?

Goods and Services Tax Identification Number (GSTIN) is a 15-digit alphanumeric code assigned to every taxpayer registered under the GST regime in India. While most people understand the GSTIN as a tax registration number, what many don’t know is the presence of a checksum digit  the 15th character of the GSTIN. This digit plays a vital role in validating the authenticity and accuracy of the GSTIN….