GSTIN (Goods and Services Tax Identification Number)

A unique 15-digit alphanumeric code assigned to every registered GST taxpayer in India.

GSTIN stands for Goods and Services Tax Identification Number. It is a unique 15-digit number assigned to every business or individual registered under GST in India. The structure of a GSTIN is as follows:

  • First 2 digits: State code (e.g., 27 for Maharashtra, 29 for Karnataka)
  • Next 10 digits: PAN of the taxpayer
  • 13th digit: Entity number (for multiple registrations in the same state)
  • 14th digit: 'Z' by default
  • 15th digit: Check digit (for validation)

Every business with an annual turnover exceeding the threshold limit (currently Rs. 40 lakhs for goods and Rs. 20 lakhs for services) must obtain a GSTIN. Businesses operating in multiple states need a separate GSTIN for each state.

Your GSTIN appears on all GST invoices, returns, and compliance documents. It is essential for claiming Input Tax Credit (ITC) and for your vendors and customers to verify your registration status.

Related Terms

GSTR-2A

An auto-populated, dynamic return showing all inward supplies as reported by your suppliers in their GSTR-1.

GSTR-2B

A static, auto-generated ITC statement available on the 14th of each month, used as the primary basis for claiming Input Tax Credit.

ITC (Input Tax Credit)

The credit a business receives for GST paid on purchases, which can be set off against GST collected on sales.

E-Invoice (Electronic Invoice under GST)

A system where B2B invoices are electronically authenticated by the GST Invoice Registration Portal (IRP) before being issued.

Automate your finance operations

ReckOps handles GST reconciliation, TDS compliance, vendor payables, and expense management — so you can focus on growing your business.

Free GST Health CheckBrowse all terms