Sales Tax Calculator

Sales Tax Calculator API

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Sales Tax Calculator computes the exact sales tax amount for purchases in any US state or ZIP code. Get accurate tax calculations with breakdowns by state, county, city, and special district rates.

Online
1 credit/call
99.9% uptime
Docs
avg: 120ms|p50: 116ms|p75: 123ms|p90: 132ms|p99: 149ms
Start for Free
Online
1 credit/call
99.9% uptime
Docs
avg: 120ms|p50: 116ms|p90: 132ms|p99: 149ms

Live Test API

Try out the Sales Tax Calculator with a live request and see the response in real-time.

API Request

GET
https://api.apiverve.com
Parameters

API Response

200 OK
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{
  "status": "ok",
  "error": null,
  "data": {
    "amount": 100,
    "taxRate": 0.0975,
    "taxRatePercent": 9.75,
    "taxAmount": 9.75,
    "totalAmount": 109.75,
    "zip": "90210",
    "state": "CA",
    "region": "Beverly Hills",
    "breakdown": {
      "stateRate": 0.0725,
      "countyRate": 0.0025,
      "cityRate": 0.0125,
      "specialRate": 0.01
    }
  }
}

Multiple Access Methods

REST API with multiple response formats, GraphQL, and MCP for AI agents

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JSON

JavaScript Object Notation

XML

Extensible Markup Language

YAML

Human-readable data format

CSV

Comma-separated values

BETA

GraphQL

Query language for APIs

NEW

MCP

AI agent integration

Zero-Code Integration

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Developer SDKs

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NuGet

.NET / C#
Ready
NuGetDocs

PyPI

Python
Ready
PyPIDocs

NPM

Node.js / JavaScript
Ready
NPMDocs
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Frequently Asked Questions

Get answers to common questions about the Sales Tax Calculator API

What does the Sales Tax Calculator API do?

Sales Tax Calculator computes the exact sales tax amount for purchases in any US state or ZIP code. Get accurate tax calculations with breakdowns by state, county, city, and special district rates. The API returns structured data in JSON, XML, or YAML format, making it easy to integrate into any application or workflow.

How fast is the Sales Tax Calculator API?

The Sales Tax Calculator API has an average response time of 120ms, with a median (p50) of 116ms and 99th percentile of 149ms. Our infrastructure maintains 99.9% uptime with servers distributed globally for low latency.

How much does the Sales Tax Calculator API cost?

Each call to the Sales Tax Calculator API uses 1 credit. The free tier includes 100 credits per month. Paid plans start at $29.99/month with higher limits, and enterprise plans offer custom pricing with priority support.

How do I authenticate Sales Tax Calculator API requests?

Include your API key in the request header as X-API-Key: your_key_here. All requests are made over HTTPS for security. You can get your API key by signing up for a free account.

What HTTP methods does Sales Tax Calculator support?

The Sales Tax Calculator API supports GET requests. Simply pass your parameters as query strings in the URL. Check our documentation for detailed parameter specifications.

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