Validate India (Maharashtra) GSTIN Number Online & via API

Verify Goods and Services Tax Identification Number format, syntax, and check-digit algorithms in <5ms. Reduce accounts payable exceptions and eliminate invoicing audit failures.

Format & Validation Specification

Official Tax NameGoods and Services Tax Identification Number

Structure SyntaxState Code '27' + 10-char PAN + 1 entity digit + 'Z' + Luhn Mod-36 check digit

Benchmark Example27AAPFU0939F1ZVSample: Tata Consultancy Services Ltd

Verification AlgorithmOfficial Luhn Mod-36 Checksum Verification

cURL Integration Snippet

Sub-5ms Execution

curl -X POST https://evolveexpert.com/api/v1/validate-tax \
  -H "Content-Type: application/json" \
  -d '{
    "taxId": "27AAPFU0939F1ZV"
  }'

Frequently Asked Questions

Why is Luhn Mod-36 verification essential for Maharashtra GSTINs?

Typing errors in vendor GSTINs prevent Input Tax Credit (ITC) claims on GSTR-2B. EvolveExpert verifies the check digit in <1ms.

Need Bulk India (Maharashtra) Invoicing OCR?

Extract line-items and auto-validate GSTIN numbers in a single sub-second API request.

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