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Finance

Mobile to GST API

Find GST identification numbers linked to a mobile number, validated across government and financial registration databases.

Illustration of a verified identity document representing the Mobile to GST API

Overview

What the Mobile to GST API does

Mobile to GST resolves a mobile number to any GSTINs registered against it, checking government and financial registration records.

For merchant onboarding this removes a form field that customers routinely get wrong. It also surfaces registrations a merchant did not mention, which is worth knowing before you set a credit limit.

Built for

Use cases

Where teams use the Mobile to GST API

  • Onboarding merchants without asking for a GSTIN

  • Discovering undisclosed business registrations

  • Pre-filling business details from a phone number

  • Cross-checking a declared GSTIN against the merchant's number

Frequently Asked Questions (FAQs)

Related APIs

Start verifying with the Mobile to GST API

Book a walkthrough and we will show the call, the response and how it fits your onboarding flow.

  • One API key for every check
  • Verified against official Indian records
  • Built for onboarding at scale