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Income Tax BracketsIncome Tax Brackets API

OnlineCredit Usage:1 per callRefreshed 1 month ago
avg: 463ms|p50: 438ms|p75: 480ms|p90: 530ms|p99: 630ms

Income Tax Brackets is a tool for retrieving US federal income tax bracket data by year. It returns tax rates, income ranges, and standard deductions for all filing statuses.

The Income Tax Brackets API provides reliable and fast access to income tax brackets data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.

To use Income Tax Brackets, you need an API key. You can get one by creating a free account and visiting your dashboard.

GET Endpoint

URL
https://api.apiverve.com/v1/incometax

Code Examples

Here are examples of how to call the Income Tax Brackets API in different programming languages:

cURL Request
curl -X GET \
  "https://api.apiverve.com/v1/incometax?country=US&year=2024" \
  -H "X-API-Key: your_api_key_here"
JavaScript (Fetch API)
const response = await fetch('https://api.apiverve.com/v1/incometax?country=US&year=2024', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);
Python (Requests)
import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

response = requests.get('https://api.apiverve.com/v1/incometax?country=US&year=2024', headers=headers)

data = response.json()
print(data)
Node.js (Native HTTPS)
const https = require('https');
const url = require('url');

const options = {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
};

const req = https.request('https://api.apiverve.com/v1/incometax?country=US&year=2024', options, (res) => {
  let data = '';
  res.on('data', (chunk) => data += chunk);
  res.on('end', () => console.log(JSON.parse(data)));
});

req.end();
PHP (cURL)
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/incometax?country=US&year=2024');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'X-API-Key: your_api_key_here',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);
curl_close($ch);

$data = json_decode($response, true);
print_r($data);

?>
Go (net/http)
package main

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

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/incometax?country=US&year=2024", nil)

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}
Ruby (Net::HTTP)
require 'net/http'
require 'json'

uri = URI('https://api.apiverve.com/v1/incometax?country=US&year=2024')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Get.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'

response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))
C# (HttpClient)
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using var client = new HttpClient();
        client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");

        var response = await client.GetAsync("https://api.apiverve.com/v1/incometax?country=US&year=2024");
        response.EnsureSuccessStatusCode();

        var responseBody = await response.Content.ReadAsStringAsync();
        Console.WriteLine(responseBody);
    }
}

Authentication

The Income Tax Brackets API requires authentication via API key. Include your API key in the request header:

Required Header
X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the Income Tax Brackets API directly in your browser with live requests and responses.

Try Income Tax Brackets APIView details and test in the API marketplace

Parameters

The following parameters are available for the Income Tax Brackets API:

Some Income Tax Brackets parameters marked with Premium are available exclusively on paid plans.View pricing

Get Tax Brackets

ParameterTypeRequiredDescriptionDefaultExample
countrystringrequired
The country code (currently only 'US' is supported)
Length: 2 - 2 chars
-US
yearPremiumintegeroptional
The tax year to retrieve brackets for. Defaults to the previous year.
Range: 2000 - 2030
-2024

Response

The Income Tax Brackets API returns responses in JSON, XML, YAML, and CSV formats:

Example Responses

JSON Response
200 OK
{
  "status": "ok",
  "error": null,
  "data": {
    "year": 2025,
    "country": "US",
    "type": "federal",
    "brackets": {
      "single": [
        {
          "rate": 0.1,
          "min": 0,
          "max": 11925
        },
        {
          "rate": 0.12,
          "min": 11926,
          "max": 48475
        },
        {
          "rate": 0.22,
          "min": 48476,
          "max": 103350
        },
        {
          "rate": 0.24,
          "min": 103351,
          "max": 197300
        },
        {
          "rate": 0.32,
          "min": 197301,
          "max": 250525
        },
        {
          "rate": 0.35,
          "min": 250526,
          "max": 626350
        },
        {
          "rate": 0.37,
          "min": 626351,
          "max": 999999999
        }
      ],
      "married_filing_jointly": [
        {
          "rate": 0.1,
          "min": 0,
          "max": 23850
        },
        {
          "rate": 0.12,
          "min": 23851,
          "max": 96950
        },
        {
          "rate": 0.22,
          "min": 96951,
          "max": 206700
        },
        {
          "rate": 0.24,
          "min": 206701,
          "max": 394600
        },
        {
          "rate": 0.32,
          "min": 394601,
          "max": 501050
        },
        {
          "rate": 0.35,
          "min": 501051,
          "max": 751600
        },
        {
          "rate": 0.37,
          "min": 751601,
          "max": 999999999
        }
      ],
      "married_filing_separately": [
        {
          "rate": 0.1,
          "min": 0,
          "max": 11925
        },
        {
          "rate": 0.12,
          "min": 11926,
          "max": 48475
        },
        {
          "rate": 0.22,
          "min": 48476,
          "max": 103350
        },
        {
          "rate": 0.24,
          "min": 103351,
          "max": 197300
        },
        {
          "rate": 0.32,
          "min": 197301,
          "max": 250525
        },
        {
          "rate": 0.35,
          "min": 250526,
          "max": 375800
        },
        {
          "rate": 0.37,
          "min": 375801,
          "max": 999999999
        }
      ],
      "head_of_household": [
        {
          "rate": 0.1,
          "min": 0,
          "max": 17000
        },
        {
          "rate": 0.12,
          "min": 17001,
          "max": 64850
        },
        {
          "rate": 0.22,
          "min": 64851,
          "max": 103350
        },
        {
          "rate": 0.24,
          "min": 103351,
          "max": 197300
        },
        {
          "rate": 0.32,
          "min": 197301,
          "max": 250500
        },
        {
          "rate": 0.35,
          "min": 250501,
          "max": 626350
        },
        {
          "rate": 0.37,
          "min": 626351,
          "max": 999999999
        }
      ]
    },
    "standard_deduction": {
      "single": 15000,
      "married_filing_jointly": 30000,
      "married_filing_separately": 15000,
      "head_of_household": 22500
    },
    "lastUpdated": "2026-02-05T04:00:00.000Z"
  }
}
XML Response
200 OK
<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <year>2025</year>
    <country>US</country>
    <type>federal</type>
    <brackets>
      <single>
        <item>
          <rate>0.1</rate>
          <min>0</min>
          <max>11925</max>
        </item>
        <item>
          <rate>0.12</rate>
          <min>11926</min>
          <max>48475</max>
        </item>
        <item>
          <rate>0.22</rate>
          <min>48476</min>
          <max>103350</max>
        </item>
        <item>
          <rate>0.24</rate>
          <min>103351</min>
          <max>197300</max>
        </item>
        <item>
          <rate>0.32</rate>
          <min>197301</min>
          <max>250525</max>
        </item>
        <item>
          <rate>0.35</rate>
          <min>250526</min>
          <max>626350</max>
        </item>
        <item>
          <rate>0.37</rate>
          <min>626351</min>
          <max>999999999</max>
        </item>
      </single>
      <married_filing_jointly>
        <item>
          <rate>0.1</rate>
          <min>0</min>
          <max>23850</max>
        </item>
        <item>
          <rate>0.12</rate>
          <min>23851</min>
          <max>96950</max>
        </item>
        <item>
          <rate>0.22</rate>
          <min>96951</min>
          <max>206700</max>
        </item>
        <item>
          <rate>0.24</rate>
          <min>206701</min>
          <max>394600</max>
        </item>
        <item>
          <rate>0.32</rate>
          <min>394601</min>
          <max>501050</max>
        </item>
        <item>
          <rate>0.35</rate>
          <min>501051</min>
          <max>751600</max>
        </item>
        <item>
          <rate>0.37</rate>
          <min>751601</min>
          <max>999999999</max>
        </item>
      </married_filing_jointly>
      <married_filing_separately>
        <item>
          <rate>0.1</rate>
          <min>0</min>
          <max>11925</max>
        </item>
        <item>
          <rate>0.12</rate>
          <min>11926</min>
          <max>48475</max>
        </item>
        <item>
          <rate>0.22</rate>
          <min>48476</min>
          <max>103350</max>
        </item>
        <item>
          <rate>0.24</rate>
          <min>103351</min>
          <max>197300</max>
        </item>
        <item>
          <rate>0.32</rate>
          <min>197301</min>
          <max>250525</max>
        </item>
        <item>
          <rate>0.35</rate>
          <min>250526</min>
          <max>375800</max>
        </item>
        <item>
          <rate>0.37</rate>
          <min>375801</min>
          <max>999999999</max>
        </item>
      </married_filing_separately>
      <head_of_household>
        <item>
          <rate>0.1</rate>
          <min>0</min>
          <max>17000</max>
        </item>
        <item>
          <rate>0.12</rate>
          <min>17001</min>
          <max>64850</max>
        </item>
        <item>
          <rate>0.22</rate>
          <min>64851</min>
          <max>103350</max>
        </item>
        <item>
          <rate>0.24</rate>
          <min>103351</min>
          <max>197300</max>
        </item>
        <item>
          <rate>0.32</rate>
          <min>197301</min>
          <max>250500</max>
        </item>
        <item>
          <rate>0.35</rate>
          <min>250501</min>
          <max>626350</max>
        </item>
        <item>
          <rate>0.37</rate>
          <min>626351</min>
          <max>999999999</max>
        </item>
      </head_of_household>
    </brackets>
    <standard_deduction>
      <single>15000</single>
      <married_filing_jointly>30000</married_filing_jointly>
      <married_filing_separately>15000</married_filing_separately>
      <head_of_household>22500</head_of_household>
    </standard_deduction>
    <lastUpdated>2026-02-05T04:00:00.000Z</lastUpdated>
  </data>
</response>
YAML Response
200 OK
status: ok
error: null
data:
  year: 2025
  country: US
  type: federal
  brackets:
    single:
      - rate: 0.1
        min: 0
        max: 11925
      - rate: 0.12
        min: 11926
        max: 48475
      - rate: 0.22
        min: 48476
        max: 103350
      - rate: 0.24
        min: 103351
        max: 197300
      - rate: 0.32
        min: 197301
        max: 250525
      - rate: 0.35
        min: 250526
        max: 626350
      - rate: 0.37
        min: 626351
        max: 999999999
    married_filing_jointly:
      - rate: 0.1
        min: 0
        max: 23850
      - rate: 0.12
        min: 23851
        max: 96950
      - rate: 0.22
        min: 96951
        max: 206700
      - rate: 0.24
        min: 206701
        max: 394600
      - rate: 0.32
        min: 394601
        max: 501050
      - rate: 0.35
        min: 501051
        max: 751600
      - rate: 0.37
        min: 751601
        max: 999999999
    married_filing_separately:
      - rate: 0.1
        min: 0
        max: 11925
      - rate: 0.12
        min: 11926
        max: 48475
      - rate: 0.22
        min: 48476
        max: 103350
      - rate: 0.24
        min: 103351
        max: 197300
      - rate: 0.32
        min: 197301
        max: 250525
      - rate: 0.35
        min: 250526
        max: 375800
      - rate: 0.37
        min: 375801
        max: 999999999
    head_of_household:
      - rate: 0.1
        min: 0
        max: 17000
      - rate: 0.12
        min: 17001
        max: 64850
      - rate: 0.22
        min: 64851
        max: 103350
      - rate: 0.24
        min: 103351
        max: 197300
      - rate: 0.32
        min: 197301
        max: 250500
      - rate: 0.35
        min: 250501
        max: 626350
      - rate: 0.37
        min: 626351
        max: 999999999
  standard_deduction:
    single: 15000
    married_filing_jointly: 30000
    married_filing_separately: 15000
    head_of_household: 22500
  lastUpdated: '2026-02-05T04:00:00.000Z'
CSV Response
200 OK
keyvalue
year2025
countryUS
typefederal
brackets{single:[{rate:0.1,min:0,max:11925},{rate:0.12,min:11926,max:48475},{rate:0.22,min:48476,max:103350},{rate:0.24,min:103351,max:197300},{rate:0.32,min:197301,max:250525},{rate:0.35,min:250526,max:626350},{rate:0.37,min:626351,max:999999999}],married_filing_jointly:[{rate:0.1,min:0,max:23850},{rate:0.12,min:23851,max:96950},{rate:0.22,min:96951,max:206700},{rate:0.24,min:206701,max:394600},{rate:0.32,min:394601,max:501050},{rate:0.35,min:501051,max:751600},{rate:0.37,min:751601,max:999999999}],married_filing_separately:[{rate:0.1,min:0,max:11925},{rate:0.12,min:11926,max:48475},{rate:0.22,min:48476,max:103350},{rate:0.24,min:103351,max:197300},{rate:0.32,min:197301,max:250525},{rate:0.35,min:250526,max:375800},{rate:0.37,min:375801,max:999999999}],head_of_household:[{rate:0.1,min:0,max:17000},{rate:0.12,min:17001,max:64850},{rate:0.22,min:64851,max:103350},{rate:0.24,min:103351,max:197300},{rate:0.32,min:197301,max:250500},{rate:0.35,min:250501,max:626350},{rate:0.37,min:626351,max:999999999}]}
standard_deduction{single:15000,married_filing_jointly:30000,married_filing_separately:15000,head_of_household:22500}
lastUpdated2026-02-05T04:00:00.000Z

Response Structure

All API responses follow a consistent structure with the following fields:

FieldTypeDescriptionExample
statusstringIndicates whether the request was successful ("ok") or failed ("error")ok
errorstring | nullContains error message if status is "error", otherwise nullnull
dataobject | nullContains the API response data if successful, otherwise null{...}

Learn more about response formats →

Response Data Fields

When the request is successful, the data object contains the following fields:

FieldTypeSample ValueDescription
yearnumber2025-
countrystring"US"-
typestring"federal"-
bracketsobject{...}-
[ ] Array items:array[7]Array of objects-
â”” ratenumber0.1-
â”” minnumber0-
â”” maxnumber11925-
[ ] Array items:array[7]Array of objects-
â”” ratenumber0.1-
â”” minnumber0-
â”” maxnumber23850-
[ ] Array items:array[7]Array of objects-
â”” ratenumber0.1-
â”” minnumber0-
â”” maxnumber11925-
[ ] Array items:array[7]Array of objects-
â”” ratenumber0.1-
â”” minnumber0-
â”” maxnumber17000-

Headers

Required and optional headers for Income Tax Brackets API requests:

Header NameRequiredExample ValueDescription
X-API-Keyrequiredyour_api_key_hereYour APIVerve API key. Found in your dashboard under API Keys.
Acceptoptionalapplication/jsonSpecify response format: application/json (default), application/xml, or application/yaml
User-AgentoptionalMyApp/1.0Identifies your application for analytics and debugging purposes
X-Request-IDoptionalreq_123456789Custom request identifier for tracking and debugging requests
Cache-Controloptionalno-cacheControl caching behavior for the request and response

Learn more about request headers →

GraphQL AccessALPHA

Access Income Tax Brackets through GraphQL to combine it with other API calls in a single request. Query only the income tax brackets data you need with precise field selection, and orchestrate complex data fetching workflows.

Test Income Tax Brackets in the GraphQL Explorer to confirm availability and experiment with queries.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

GraphQL Endpoint
POST https://api.apiverve.com/v1/graphql
GraphQL Query Example
query {
  incometax(
    input: {
      country: "US"
      year: 2024
    }
  ) {
    year
    country
    type
    brackets {
      single
      married_filing_jointly
      married_filing_separately
      head_of_household
    }
    standard_deduction {
      single
      married_filing_jointly
      married_filing_separately
      head_of_household
    }
    lastUpdated
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

CORS Support

The Income Tax Brackets API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Income Tax Brackets directly from browser-based applications without proxy servers.

CORS HeaderValueDescription
Access-Control-Allow-Origin*Accepts requests from any origin
Access-Control-Allow-Methods*Accepts any HTTP method
Access-Control-Allow-Headers*Accepts any request headers

Browser Usage: You can call Income Tax Brackets directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.

Learn more about CORS support →

Rate Limiting

Income Tax Brackets API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Income Tax Brackets users.

PlanRate LimitDescription
Free5 requests/minHard rate limit enforced - exceeding will return 429 errors
StarterNo LimitProduction ready - standard traffic priority
ProNo LimitProduction ready - preferred traffic priority
MegaNo LimitProduction ready - highest traffic priority

Learn more about rate limiting →

Rate Limit Headers

When rate limits apply, each Income Tax Brackets response includes headers to help you track your usage:

HeaderDescription
X-RateLimit-LimitMaximum number of requests allowed per time window
X-RateLimit-RemainingNumber of requests remaining in the current window
X-RateLimit-ResetUnix timestamp when the rate limit window resets

Handling Rate Limits

Free Plan: When you exceed your rate limit, Income Tax Brackets returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.

Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.

Best Practices for Income Tax Brackets:

  • Monitor the rate limit headers to track your Income Tax Brackets usage (Free plan only)
  • Cache income tax brackets responses where appropriate to reduce API calls
  • Upgrade to Pro or Mega for guaranteed no-throttle Income Tax Brackets performance

Note: Income Tax Brackets rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Income Tax Brackets on Free tier.

Error Codes

The Income Tax Brackets API uses standard HTTP status codes to indicate success or failure:

CodeMessageDescriptionSolution
200OKRequest successful, data returnedNo action needed - request was successful
400Bad RequestInvalid request parameters or malformed requestCheck required parameters and ensure values match expected formats
401UnauthorizedMissing or invalid API keyInclude x-api-key header with valid API key from dashboard
403ForbiddenAPI key lacks permission or insufficient creditsCheck credit balance in dashboard or upgrade plan
429Too Many RequestsRate limit exceeded (Free: 5 req/min)Implement request throttling or upgrade to paid plan
500Internal Server ErrorServer error occurredRetry request after a few seconds, contact support if persists
503Service UnavailableAPI temporarily unavailableWait and retry, check status page for maintenance updates

Learn more about error handling →

Need help? Contact support with your X-Request-ID for assistance.

Integrate Income Tax Brackets with SDKs

Get started quickly with official Income Tax Brackets SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.

Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.

NPMPyPINuGetSwaggerJitPackJitPack

Integrate Income Tax Brackets with No-Code API Tools

Connect the Income Tax Brackets API to your favorite automation platform without writing code. Build workflows that leverage income tax brackets data across thousands of apps.

Zapier
ZapierConnect Income Tax Brackets to 6,000+ apps
Make
MakeBuild visual income tax brackets workflows
Pipedream
PipedreamCode-friendly income tax brackets automation
n8n
n8nSelf-host your income tax brackets workflows
Power Automate
Power AutomateUse Income Tax Brackets in Microsoft 365

All platforms use your same API key to access Income Tax Brackets. Visit our integrations hub for step-by-step setup guides.

Frequently Asked Questions

How do I get an API key for Income Tax Brackets?
Sign up for a free account at dashboard.apiverve.com. Your API key will be automatically generated and available in your dashboard. The same key works for Income Tax Brackets and all other APIVerve APIs. The free plan includes 1,000 credits plus a 500 credit bonus.
How many credits does Income Tax Brackets cost?

Each successful Income Tax Brackets API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful income tax brackets lookups.

Can I use Income Tax Brackets in production?

The free plan is for testing and development only. For production use of Income Tax Brackets, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.

Can I use Income Tax Brackets from a browser?
Yes! The Income Tax Brackets API supports CORS with wildcard configuration, so you can call it directly from browser-based JavaScript without needing a proxy server. See the CORS section above for details.
What happens if I exceed my Income Tax Brackets credit limit?

When you reach your monthly credit limit, Income Tax Brackets API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.

What's Next?

Continue your journey with these recommended resources

Browse All APIs

Explore our complete catalog of APIs

Authentication Guide

Learn about API keys and security

Rate Limits

Understand usage limits and best practices

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