GSTIN Identification

In Assam, every registered business receives a unique 15-digit GSTIN (Goods and Services Tax Identification Number) that must begin with the state code 18.

18AABCU9603R1ZM

First 2 digits signify Assam jurisdiction

Regional Compliance Hub

Intra-State

Sale within Assam (CGST + SGST)

Inter-State

Sale outside Assam (IGST only)

Threshold

₹40 Lakh for Goods, ₹20 Lakh for Services

Authority

Assam State Tax Department

Professional Note: Ensure your billing software correctly identifies place of supply as Assam to avoid wrong tax head selection, which is a common cause of GST notices.

💡 Regional AI Insight

Business Opportunity in Assam

"As a major hub in North-East India, Assam businesses can leverage local SGST credits efficiently when sourcing from within the state. AasanKhata's AI smart-matches your vendors to maximize these credits."