curl --request POST \
  --url https://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "method": "addPayrollTaxExemption",
  "companyId": "ECF1B47E-108F-45C0-A520-6A128A727B04",
  "userId": "33820169-85C2-482A-BCCF-B2281419E96E",
  "taxName": "WA - State paid family medical leave ER",
  "exemptionEffectiveStartDate": "2026-02-30",
  "exemptionEffectiveEndDate": "2025-12-31",
  "exemptReason": "Employer claimed exempt on W-4",
  "exemptConfirmation": true,
  "fileName": "tax.pdf",
  "fileBase64": "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"
}
'

import requests

url = "https://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption"

payload = {
    "method": "addPayrollTaxExemption",
    "companyId": "ECF1B47E-108F-45C0-A520-6A128A727B04",
    "userId": "33820169-85C2-482A-BCCF-B2281419E96E",
    "taxName": "WA - State paid family medical leave ER",
    "exemptionEffectiveStartDate": "2026-02-30",
    "exemptionEffectiveEndDate": "2025-12-31",
    "exemptReason": "Employer claimed exempt on W-4",
    "exemptConfirmation": True,
    "fileName": "tax.pdf",
    "fileBase64": "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"
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    method: 'addPayrollTaxExemption',
    companyId: 'ECF1B47E-108F-45C0-A520-6A128A727B04',
    userId: '33820169-85C2-482A-BCCF-B2281419E96E',
    taxName: 'WA - State paid family medical leave ER',
    exemptionEffectiveStartDate: '2026-02-30',
    exemptionEffectiveEndDate: '2025-12-31',
    exemptReason: 'Employer claimed exempt on W-4',
    exemptConfirmation: true,
    fileName: 'tax.pdf',
    fileBase64: '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'
  })
};

fetch('https://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption', 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://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption",
  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([
    'method' => 'addPayrollTaxExemption',
    'companyId' => 'ECF1B47E-108F-45C0-A520-6A128A727B04',
    'userId' => '33820169-85C2-482A-BCCF-B2281419E96E',
    'taxName' => 'WA - State paid family medical leave ER',
    'exemptionEffectiveStartDate' => '2026-02-30',
    'exemptionEffectiveEndDate' => '2025-12-31',
    'exemptReason' => 'Employer claimed exempt on W-4',
    'exemptConfirmation' => true,
    'fileName' => 'tax.pdf',
    'fileBase64' => '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'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "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://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption"

	payload := strings.NewReader("{\n  \"method\": \"addPayrollTaxExemption\",\n  \"companyId\": \"ECF1B47E-108F-45C0-A520-6A128A727B04\",\n  \"userId\": \"33820169-85C2-482A-BCCF-B2281419E96E\",\n  \"taxName\": \"WA - State paid family medical leave ER\",\n  \"exemptionEffectiveStartDate\": \"2026-02-30\",\n  \"exemptionEffectiveEndDate\": \"2025-12-31\",\n  \"exemptReason\": \"Employer claimed exempt on W-4\",\n  \"exemptConfirmation\": true,\n  \"fileName\": \"tax.pdf\",\n  \"fileBase64\": \"JVBERi0xLjcNCiW1tbW1DQoxIDAgb2JqDQo8PC9UeXBlL0NhdGFsb2cvUGFnZXMgMiAwIFIvTGFuZyhlbikgL1N0cnVjdFRyZWVSb290IDIyIDAgUi9NYXJrSW5mbzw8L01hcmtlZCB0cnVlPj4vTWV0YWRhdGEgMTk3IDAgUi9WaWV3ZXJQcmVmZXJlbmNlcyAxOTggMCBSPj4NCmVuZG9iag0KMiAwIG9iag0KPDwvVHlwZS9QYWdlcy9Db3VudCAxL0tpZHNbIDMgMCBSXSA+Pg0KZW5kb2JqDQozIDAgb2JqDQo8PC9UeXBlL1BhZ2UvUGFyZW50IDIgMCBSL1Jlc291cmNlczw8L0V4dEdTdGF0ZTw8L0dTNSA1IDAgUi9HUzggOCAwIFI+Pi9YT2JqZWN0PDwvSW1hZ2U2IDYgMCBSPj4vRm9udDw8L0YxIDkgMCBSL0YyIDExIDAgUi9GMyAxMyAwIFIvRjQgMTUgMCBSPj4vUHJvY1NldFsvUERGL1RleHQvSW1hZ2VCL0ltYWdlQy9JbWFnZUldID4+L0Fubm90c1sgMjAgMCBSXSAvTWVkaWFCb3hbIDAgMCA2MTIgNzkyXSAvQ29udGVudHMgNCAwIFIvR3JvdXA8PC9UeXBlL0dyb3VwL1MvVHJhbnNwYXJlbmN5L0NTL0RldmljZVJHQj4+L1RhYnMvUy9TdHJ1Y3RQYXJlbnRzIDA+Pg0KZW5kb2JqDQo0IDAgb2JqDQo8PC9GaWx0ZXIvRmxhdGVEZWNvZGUvTGVuZ3RoIDc3Mjc+Pg0Kc3RyZWFtDQp4nL09a48bN5LfDfg/6D4cIC1u2s138xAEcGzH8V7ieGMne7jdxUHxTOxJ7JEzHucB3I+/Kj5arSar2epuycZoNBKb9SDrRRaLqwcvVp999uCbR88er+rPP1998fjRqq6MtJavfr9/78HTl2r15uP9e3XFV0/v31ux1c\"\n}")

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

	req.Header.Add("Authorization", "Basic <encoded-value>")
	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://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"method\": \"addPayrollTaxExemption\",\n  \"companyId\": \"ECF1B47E-108F-45C0-A520-6A128A727B04\",\n  \"userId\": \"33820169-85C2-482A-BCCF-B2281419E96E\",\n  \"taxName\": \"WA - State paid family medical leave ER\",\n  \"exemptionEffectiveStartDate\": \"2026-02-30\",\n  \"exemptionEffectiveEndDate\": \"2025-12-31\",\n  \"exemptReason\": \"Employer claimed exempt on W-4\",\n  \"exemptConfirmation\": true,\n  \"fileName\": \"tax.pdf\",\n  \"fileBase64\": \"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\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox.rollfi.xyz/payroll/addPayrollTaxExemption")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"method\": \"addPayrollTaxExemption\",\n  \"companyId\": \"ECF1B47E-108F-45C0-A520-6A128A727B04\",\n  \"userId\": \"33820169-85C2-482A-BCCF-B2281419E96E\",\n  \"taxName\": \"WA - State paid family medical leave ER\",\n  \"exemptionEffectiveStartDate\": \"2026-02-30\",\n  \"exemptionEffectiveEndDate\": \"2025-12-31\",\n  \"exemptReason\": \"Employer claimed exempt on W-4\",\n  \"exemptConfirmation\": true,\n  \"fileName\": \"tax.pdf\",\n  \"fileBase64\": \"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\"\n}"

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

{
  "success": true,
  "message": "Payroll tax exemption for company added successfully."
}

{
  "error": {
    "code": 400,
    "message": "Invalid taxName 'Regular Tax'. This tax code does not belong to company 'ECF1B47E-108F-45C0-A520-6A128A727B04'. Please provide a valid tax name that exists for this company."
  }
}