Indian GST Number Generator
IndiaGenerate valid-format Indian Goods and Services Tax Identification Numbers (GSTIN) with correct check digits for testing. GSTIN is a 15-character alphanumeric code.
Generator
Validate GSTIN
GSTIN Format
Length: 15 characters
Structure: SSPPPPPPPPPPPCZ
SS: State code (01-37)
PPPPPPPPPP: PAN (10 chars)
C: Entity number (1-9, A-Z)
Z: Check digit
State Codes
Testing Only
These are randomly generated numbers for testing purposes only. Using fake GSTIN is illegal in India.
What is This Tool?
A GST number generator creates fictional 15-character GSTINs (Goods and Services Tax Identification Numbers) following the Indian GST format. Each GSTIN encodes the state code, PAN, entity number, and a check digit — all generated with correct formatting for testing GST-compliant software.
GSTIN format: 2-digit state code (01-37), 10-character PAN, 1-digit entity number (1-9 or A-Z), Z (default), and 1 check character. The check digit uses a custom algorithm based on the first 14 characters. This tool generates structurally valid GSTINs for development and testing.
Common Use Cases
GST Invoice Software
Test GST invoice generation, e-way bill creation, and return filing with properly formatted GSTINs.
E-commerce Compliance
Validate seller GSTIN verification, HSN code mapping, and GST calculation in marketplace platforms.
Accounting Software
Test Tally, Zoho Books, and other Indian accounting platforms with format-correct GST test data.
GST Portal Integration
Validate GSTIN format checking and state code validation in GST portal API integrations.
Frequently Asked Questions
Are generated GSTINs registered?
No. GSTINs follow correct format and pass check digit validation but are not registered on the GST portal.
What do the digits mean?
Positions 1-2: state code. Positions 3-12: PAN of the entity. Position 13: entity number within state. Position 14: Z (default). Position 15: check digit.
Can I validate a real GSTIN with this tool?
This is a generator, not a validator. To validate real GSTINs, use the official GST portal or authorized GSTIN search APIs.