FastGST Logo FastGST GST Tax Rates API Usage Documentation

FastGST simplifies GST tax rate integration by aggregating publicly available GST data into a single API. Activate in ConsoleDesk and get your API-Key.

Website: https://www.fastgst.in

Get API Key and Manage Access: https://www.consoledesk.in

Plans & Pricing: https://www.fastgst.in/pricing/

API Base URL https://api.taxlookup.fastgst.in

How To Start Using This API

Follow these step-by-step instructions to register your account, activate the services, and obtain secure credentials.

1

Go to ConsoleDesk

Visit the developer console portal at https://www.consoledesk.in.

2

Choose "GST Tax Rates API"

In the marketplace choose 'GST Tax Rates API'.

3

Activate the API

Activating will enable the service for the logged in email/user.

4

Choose A Plan

Choose a plan that aligns with your query volume.

5

Create an API Key

Generate an API Key from ConsoleDesk. You must pass this key in the X-API-Key header for all requests.

6

Test the API Key

You can test your API Key directly in: https://www.fastgst.in/hsn-sac-finder/.

7

Monitor Usage in ConsoleDesk

Track realtime usage metrix, upgrade if nessesary

Find Goods/Services

Use these endpoints to search for goods and services codes by keyword or semantic meaning.

Find GST Rates

Use these endpoints to retrieve active GST rates and conditional rules.

GET /search/hsn/{code}/taxes

Get HSN GST Tax Rates By Code

This endpoint retrieves GST rates available and other details for a given HSN code, including CGST, SGST, IGST, and Compensation Cess breakdowns. Use this endpoint to get latest known tax rate with best effort accuracy.

WHEN TO USE
  • ✦ Direct Lookup: Once you have an HSN code, use this endpoint to retrieve the latest known GST Tax Rates.
  • ✦ Exemption Status: Helps verify if the specific product is tax-exempted or taxable
Parameter Type Required Description
code integer Required 6-digit (Intl. WCO std) or 8-digit (Indian Customs std) numeric HSN code.

Sample Request

curl -X 'GET' \
  'https://api.taxlookup.fastgst.in/search/hsn/11029021/taxes' \
  -H 'accept: */*' \
  -H 'X-API-Key: FGST_TEST_************************'

Sample Response

{
  "success": true,
  "data": {
    "gst_rate": 5,
    "gst_breakdown": {
      "cgst": 2.5,
      "sgst": 2.5,
      "igst": 5
    },
    "cess_breakdown": "No Compensation Cess Applicable",
    "cess_detail": "No Compensation Cess Applicable",
    "is_exempted": false,
    "exemption_status": "Taxable",
    "broad_categeory": "v1.0",
    "last_updated": "13-07-2022",
    "schedule": "Schedule I",
    "source": "Title: Rate of GST on Goods, No: 06/2022-Integrated Tax (Rate), Dated: 13-07-2022, Supersedes: Amends 01/2017-IT(R), PreviousRate: 5% (Branded), Summary: 5% if pre-packaged & labelled; 0% if loose/unlabelled"
  },
  "meta": {
    "api_version": "v1",
    "timestamp": "2026-06-15",
    "request_id": "req_0HNMB2T906CLT:00000001"
  }
}

GET /search/sac/{code}/taxes

Get SAC GST Tax Rates By Code

This endpoint retrieves GST rates available and other details for a given SAC code, including CGST, SGST, IGST, and Compensation Cess breakdowns. Use this endpoint to get latest known tax rate with best effort accuracy.

WHEN TO USE
  • ✦ Direct Lookup: Once you have an SAC code, use this endpoint to retrieve the latest known GST Tax Rates.
  • ✦ Exemption Status: Helps verify if the specific service is tax-exempted or taxable
Parameter Type Required Description
code integer Required 6-digit (Intl. WCO std) or 8-digit (Indian Customs std) numeric SAC code.

Sample Request

curl -X 'GET' \
  'https://api.taxlookup.fastgst.in/search/sac/998314/taxes' \
  -H 'accept: */*' \
  -H 'X-API-Key: FGST_TEST_************************'

Sample Response

{
  "success": true,
  "data": {
    "gst_rate": 18,
    "gst_breakdown": {
      "cgst": 9,
      "sgst": 9,
      "igst": 18
    },
    "conditions": "Standard rate for IT software services",
    "is_exempted": false,
    "exemption_status": "Taxable"
  },
  "meta": {
    "api_version": "v1",
    "timestamp": "2026-04-07",
    "request_id": "req_0HNKKS1B9IQEV:00000001"
  }
}

Find Classification

Use these endpoints to trace the complete classification hierarchy.

GET /search/hsn/{code}

Get HSN Classification Hierarchy By Code

This endpoint retrieves the complete classification hierarchy for a given HSN code, including its schedule, description and inheritance from Section through to Tariff Item level. It is useful for tracing a good’s classification path by category.

WHEN TO USE
  • ✦ Direct Lookup: Once you have an HSN code, use this endpoint to retrieve its complete classification hierarchy.
  • ✦ Hierarchy Details: Useful for displaying structural categorization of the product
Parameter Type Required Description
code integer Required 6-digit (Intl. WCO std) or 8-digit (Indian Customs std) numeric HSN code.

Sample Request

curl -X 'GET' \
  'https://api.taxlookup.fastgst.in/search/hsn/11029021' \
  -H 'accept: */*' \
  -H 'X-API-Key: FGST_TEST_************************'

Sample Response

{
  "success": true,
  "data": {
    "hsn_code": "11029021",
    "schedule": "Schedule I",
    "description": "Brown Rice Flour",
    "hierarchy": {
      "section": {
        "code": "06-14",
        "description": "II Vegetable Products"
      },
      "chapter": {
        "code": "11",
        "description": "Cereal Flours Other Than Of Wheat Or Meslin."
      },
      "heading": {
        "code": "1102",
        "description": "General"
      },
      "sub_heading": {
        "code": "110290",
        "description": "Others"
      },
      "tariff_item": {
        "code": "11029021",
        "description": "Brown Rice Flour"
      }
    }
  },
  "meta": {
    "api_version": "v1",
    "timestamp": "2026-04-07",
    "request_id": "req_0HNKKS1B9IQER:00000001"
  }
}

GET /search/sac/{code}

Get SAC Classification Hierarchy By Code

This endpoint retrieves the complete classification hierarchy for a given SAC code, including its schedule, description and inheritance from Section through to Tariff Item level. It is useful for tracing a service's classification path by category.

WHEN TO USE
  • ✦ Direct Lookup: Once you have an SAC code, use this endpoint to retrieve its complete classification hierarchy.
  • ✦ Hierarchy Details: Useful for displaying structural categorization of the service
Parameter Type Required Description
code integer Required 6-digit (Intl. WCO std) or 8-digit (Indian Customs std) numeric SAC code.

Sample Request

curl -X 'GET' \
  'https://api.taxlookup.fastgst.in/search/sac/998314' \
  -H 'accept: */*' \
  -H 'X-API-Key: FGST_TEST_************************'

Sample Response

{
  "success": true,
  "data": {
    "sac_code": "998314",
    "description": "Information technology (IT) design and development services",
    "hierarchy": {
      "heading": {
        "code": "9983",
        "description": "Other professional, technical and business services"
      },
      "group": {
        "code": "99831",
        "description": "Management consulting and management services; information technology services"
      }
    }
  },
  "meta": {
    "api_version": "v1",
    "timestamp": "2026-04-07",
    "request_id": "req_0HNKKS1B9IQEU:00000001"
  }
}