GST Taxpayer
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Verify any GSTIN — decode its structure, validate the checksum, and fetch live status from GSTN. Search by PAN to see all GSTINs registered under that PAN.
What does this tool decode?
Full GSTIN intelligence — state registration, entity type, PAN embedded in the GSTIN, checksum validation using the GSTN modulo-36 algorithm, and PAN-based lookup of all GSTINs.
Checksum Validation
Modulo-36 weighted algorithm mathematically verifies the last (15th) check digit of any GSTIN.
State Identification
All 37 state and UT codes decoded — from J&K (01) to Ladakh (38) and Centre Jurisdiction (99).
Entity Type
Identifies Individual, Company, HUF, Firm, Trust, BOI, AOP, Local Authority, and more.
PAN-based Search
Search all GSTINs registered to a PAN. Results sourced directly from the GSTN database.
What is a GSTIN?
A GSTIN (Goods and Services Tax Identification Number) is a unique 15-character alphanumeric identifier assigned to every GST-registered taxpayer in India. It encodes the state of registration, the PAN of the taxpayer, the entity type, and a check digit — all in a single string verifiable without an API call.
Characters 1–2
State code (01–99). Identifies the state or union territory where the taxpayer is registered.
Characters 3–12
PAN of the taxpayer. Contains entity type at position 4 and a check digit at position 10.
Character 13
Entity number (1–9, A–Z). Assigned when a taxpayer has multiple registrations in the same state.
Characters 14–15
Default field 'Z' (always) + check digit computed by the GSTN modulo-36 weighted algorithm.
Entity Type Codes
The 4th character of the PAN embedded in a GSTIN indicates the taxpayer entity type.
Need help with GST registration?
From GST registration to return filing — Golden Verdict handles everything with certified professionals.
Disclaimer
GSTIN anatomy (state, entity type, PAN breakdown, checksum) is decoded locally from the GSTIN structure using the official format defined by GSTN — no external API is required for this. Live registration status, business name, filing frequency, and cancellation details must be verified at the official GSTN portal at services.gst.gov.in. Golden Verdict does not guarantee accuracy of live registration data — always verify from official sources before making legal or tax decisions.