Pazy Documentation

GST Tax Creation API

curl --request POST \
  --url https://api.pazy.io/v1.0/taxes/gst

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.pazy.io/v1.0/taxes/gst",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.pazy.io/v1.0/taxes/gst"

	req, _ := http.NewRequest("POST", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.pazy.io/v1.0/taxes/gst")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)

response = http.request(request)
puts response.read_body

GST Tax Creation API

curl --request POST \
  --url https://api.pazy.io/v1.0/taxes/gst

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.pazy.io/v1.0/taxes/gst",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.pazy.io/v1.0/taxes/gst"

	req, _ := http.NewRequest("POST", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.pazy.io/v1.0/taxes/gst")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)

response = http.request(request)
puts response.read_body

Authentication

All requests require an API key in the request headers. Headers:

Authorization: Api-Key YOUR_API_KEY
Content-Type: application/json

The permission required on your API key is Tax with the Create action enabled.

Request

Content-Type: application/json Creates a custom GST rate in your organization tax master. Use the returned id as gstId when creating vendor advances or other transactions that need GST. GST rates are scoped to an organization entity when you pass entityGstin. Resolve available GSTINs from the Company Entities API. To list rates that already exist, use the GST Taxes API.

This endpoint creates standard (non reverse-charge) percentage rates — the same shape returned by the list API.

Body Parameters

Parameter	Type	Required	Constraints	Description
`name`	string	Yes	1–255 characters	Display name for the rate in Pazy (returned as `label` on list)
`section`	string	Yes	`IGST` or `SGST + CGST`	GST component — interstate vs intrastate split
`rate`	number	Yes	0–100	Tax percentage
`entityGstin`	string	No	15-character GSTIN	Organization entity GSTIN this rate belongs to. Omit to leave the rate unbound to an entity

Code Examples

curl -X POST https://api.pazy.io/v1.0/taxes/gst \
  -H "Authorization: Api-Key YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "GST 18%",
    "section": "IGST",
    "rate": 18,
    "entityGstin": "29AAJCM3528P1ZR"
  }'

const response = await fetch('https://api.pazy.io/v1.0/taxes/gst', {
  method: 'POST',
  headers: {
    Authorization: 'Api-Key YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    name: 'GST 18%',
    section: 'IGST',
    rate: 18,
    entityGstin: '29AAJCM3528P1ZR'
  })
});

const result = await response.json();

import requests

url = "https://api.pazy.io/v1.0/taxes/gst"
headers = {
    "Authorization": "Api-Key YOUR_API_KEY",
    "Content-Type": "application/json"
}
payload = {
    "name": "GST 18%",
    "section": "IGST",
    "rate": 18,
    "entityGstin": "29AAJCM3528P1ZR"
}

response = requests.post(url, headers=headers, json=payload)
result = response.json()

Success Response

HTTP Status: 200 OK Response Fields:

Field	Type	Description
`ok`	boolean	Indicates whether the request was successful
`data.tax.id`	string	Tax id. Pass this as `gstId` to transaction create APIs
`data.tax.label`	string	Display name given to the tax
`data.tax.description`	string	Same value as `section`
`data.tax.section`	string	GST component e.g. `IGST`, `SGST + CGST`
`data.tax.rate`	number	Tax percentage
`data.tax.rateType`	string	How `rate` is applied — `PERCENTAGE` for rates created via this API
`data.tax.dateCreated`	string	ISO 8601 timestamp of when the tax was created
`data.tax.entityGstin`	string \| null	GSTIN passed in the request, or `null` when omitted
`data.tax.entityGstinName`	string \| null	Entity display name when available; may be `null` on create

Response Example

{
  "ok": true,
  "data": {
    "tax": {
      "id": "4172",
      "label": "GST 18%",
      "description": "IGST",
      "section": "IGST",
      "rate": 18,
      "rateType": "PERCENTAGE",
      "dateCreated": "2026-09-02T06:45:12.110Z",
      "entityGstin": "29AAJCM3528P1ZR",
      "entityGstinName": null
    }
  }
}

Error Responses

Validation Errors

HTTP Status: 400 Bad Request Returned when section is invalid or entityGstin does not match an active organization GSTIN.

{
  "ok": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Organization entity GSTIN not found: 29AAJCM3528P1ZR"
  }
}

Authentication Errors

HTTP Status: 401 Unauthorized

{
  "ok": false,
  "error": {
    "code": "MISSING_CREDENTIALS",
    "message": "Missing Credentials"
  }
}

{
  "ok": false,
  "error": {
    "code": "INVALID_API_KEY",
    "message": "Invalid API Key"
  }
}

Permission Errors

HTTP Status: 403 Forbidden Returned when the API key doesn’t have the Tax resource with the Create action enabled.

{
  "ok": false,
  "error": {
    "code": "INSUFFICIENT_PERMISSIONS",
    "message": "Permission check failed - PERMISSION_CHECK_FAILED"
  }
}

Server Errors

HTTP Status: 500 Internal Server Error

{
  "ok": false,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "An unexpected error occurred"
  }
}

Best Practices

Pass entityGstin when your organization has multiple GSTIN entities so the rate shows up for the right entity on list and transaction flows
Use section values exactly as documented (IGST or SGST + CGST) — free-text labels are rejected
After create, confirm the rate on List GST Taxes before hardcoding the id in downstream jobs

Get Started

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Tax APIs

GST Tax Creation API

Authentication

Request

Body Parameters

Code Examples

Success Response

Response Example

Error Responses

Validation Errors

Authentication Errors

Permission Errors

Server Errors

Best Practices

​Authentication

​Request

​Body Parameters

​Code Examples

​Success Response

​Response Example

​Error Responses

​Validation Errors

​Authentication Errors

​Permission Errors

​Server Errors

​Best Practices

Authentication

Request

Body Parameters

Code Examples

Success Response

Response Example

Error Responses

Validation Errors

Authentication Errors

Permission Errors

Server Errors

Best Practices