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GST Verification API

Check GST registration details before adding a business record.

Look up the taxpayer and registration details available for a GSTIN. Your finance or onboarding team can review them against the business record.

Talk to our team Explore features

Need API access? Talk to our team.

Published API reference Authorised access Integration support

A CLOSER LOOK

What you can do with GST Verification.

See how each feature works.

  1. GSTIN-based lookup

    Request available registration details with a 15-character GSTIN.

  2. Taxpayer information

    Review the taxpayer details returned by the provider for the submitted number.

  3. Optional business name

    Include the business name when it is available in your application.

  4. Business-record review

    Compare the returned information with the details provided by a supplier or merchant.

  5. Related PAN lookup

    A separate PAN to GSTIN operation can find available GST registrations associated with a PAN.

BUILT AROUND YOUR WORK

Where GST Verification fits.

Common uses for this API.

Supplier onboarding

Check a supplier's GST registration information before completing your internal review.

Merchant documentation

Include available GST details in a merchant application record.

Finance record checks

Help the finance team review the registration information held against a business.

FOR YOUR DEVELOPMENT TEAM

Take the next step with the right details.

See the documentation for request fields, responses and setup instructions.

  • Check the published inputs, response format and error handling.
  • Keep credentials on your server and collect only authorised data.
  • Confirm provider access and deployment requirements with BankU.

Returned registration fields depend on the provider response. This page describes a lookup service, not tax advice, return filing or a guarantee of tax compliance.

FROM REQUEST TO REVIEW

A clear path through the process.

  1. Collect the GSTIN

    Obtain the registration number and the business name where available.

  2. Request registration details

    Submit the documented input through the approved backend integration.

  3. Review the business record

    Resolve differences or missing information with the business before relying on the result.

GOOD QUESTIONS

Before you get started.

Common questions about GST Verification.

Can the service search by PAN?

GSTIN verification requires a GSTIN. The separate PAN to GSTIN operation looks up available linked registrations.

Does this file GST returns?

No. This API retrieves available registration and taxpayer information; it does not file returns or pay taxes.

Does a returned registration confirm tax compliance?

No. A registration lookup is not a tax-compliance certificate or a complete review of a business's obligations.

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