# Advanced GST Verification with Filing History API | FastKYC

> Enhanced GSTIN verification with compliance and filing history, promoter details, turnover data and e-invoice applicability for deeper KYB checks.

Source: https://www.fastkyc.com/apis/gst-verification-advanced/

---

[Merchant](/apis/merchant/)

# GST Advanced API

Enhanced GSTIN verification with compliance and filing history, promoter details, turnover data and e-invoice applicability for deeper KYB checks.

[Book a Demo](/book-demo/)

Overview

## What the GST Advanced API does

GST Advanced goes beyond confirming a registration exists. It returns the business details together with compliance history, promoter and director information, turnover bands and whether e-invoicing applies.

Filing behaviour is the signal that matters most here. A business that files consistently looks very different from one with long gaps, and that difference is directly relevant to credit decisions and to your own input tax credit risk.

## Built for

[Marketplaces & E-commerce](/industries/marketplaces/)[Logistics & Mobility](/industries/logistics/)

Use cases

## Where teams use the GST Advanced API

-   Assessing a business borrower's compliance behaviour
    
-   Estimating turnover band for credit limits
    
-   Identifying promoters behind a merchant entity
    
-   Checking e-invoice applicability before transacting
    

## Frequently Asked Questions (FAQs)

## Related APIs

-   [Generate e-Way Bill APIGenerate a GST-compliant e-Way Bill from invoice and transport details, returning the bill number and validity so goods can move without delays.](/apis/generate-eway-bill/)
-   [Get 1A data APIRetrieve GSTR-1A B2B invoice details for a GSTIN and return period, giving your GST reconciliation workflow the amendments a supplier has filed.](/apis/get-1a-data/)
-   [GSTIN By Name APIFind every GSTIN registered against a business name across Indian states, with the status of each registration, when a merchant can't share its GSTIN.](/apis/gst-by-name/)
-   [GSTIN By Pan APIRetrieve every GSTIN linked to a PAN, with the state and current status of each registration, to see a business's full GST footprint in one call.](/apis/gst-by-pan/)

## Guides on the GST Advanced API

-   [GuideGST Verification Online: How to Verify a GST NumberVerify a GSTIN online to confirm a business is registered and compliant: what the 15 characters mean, how to check it on the portal, and how to automate it.](/blog/how-to-verify-gst-online/)

## Start verifying with the GST Advanced 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

[Book a Demo](/book-demo/)[Browse All APIs](/apis/)