curl --request POST \
  --url https://{defaultHost}/v1/tax_overrides \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tax_override": {
    "tax_zone": "5db1e76d-6cc8-4ed1-89ce-6827245324a2",
    "product_collection": "c561bec6-207b-4155-9069-a835ba037aaa",
    "rate": 10,
    "label": "GST + PST"
  }
}
'

import requests

url = "https://{defaultHost}/v1/tax_overrides"

payload = { "tax_override": {
        "tax_zone": "5db1e76d-6cc8-4ed1-89ce-6827245324a2",
        "product_collection": "c561bec6-207b-4155-9069-a835ba037aaa",
        "rate": 10,
        "label": "GST + PST"
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    tax_override: {
      tax_zone: '5db1e76d-6cc8-4ed1-89ce-6827245324a2',
      product_collection: 'c561bec6-207b-4155-9069-a835ba037aaa',
      rate: 10,
      label: 'GST + PST'
    }
  })
};

fetch('https://{defaultHost}/v1/tax_overrides', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{defaultHost}/v1/tax_overrides",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'tax_override' => [
        'tax_zone' => '5db1e76d-6cc8-4ed1-89ce-6827245324a2',
        'product_collection' => 'c561bec6-207b-4155-9069-a835ba037aaa',
        'rate' => 10,
        'label' => 'GST + PST'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://{defaultHost}/v1/tax_overrides"

	payload := strings.NewReader("{\n  \"tax_override\": {\n    \"tax_zone\": \"5db1e76d-6cc8-4ed1-89ce-6827245324a2\",\n    \"product_collection\": \"c561bec6-207b-4155-9069-a835ba037aaa\",\n    \"rate\": 10,\n    \"label\": \"GST + PST\"\n  }\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://{defaultHost}/v1/tax_overrides")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"tax_override\": {\n    \"tax_zone\": \"5db1e76d-6cc8-4ed1-89ce-6827245324a2\",\n    \"product_collection\": \"c561bec6-207b-4155-9069-a835ba037aaa\",\n    \"rate\": 10,\n    \"label\": \"GST + PST\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{defaultHost}/v1/tax_overrides")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"tax_override\": {\n    \"tax_zone\": \"5db1e76d-6cc8-4ed1-89ce-6827245324a2\",\n    \"product_collection\": \"c561bec6-207b-4155-9069-a835ba037aaa\",\n    \"rate\": 10,\n    \"label\": \"GST + PST\"\n  }\n}"

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

{
  "id": "120725f0-f02f-41f6-86e4-0884b46742e9",
  "object": "tax_override",
  "label": "GST + PST",
  "shipping": false,
  "rate": 10,
  "product_collection": "c561bec6-207b-4155-9069-a835ba037aaa",
  "tax_zone": "5db1e76d-6cc8-4ed1-89ce-6827245324a2",
  "created_at": 1789424648,
  "updated_at": 1789424648
}