Introduction

By providing as little as a zip code, we can determine the sales tax rates for your customers in their specific geographical area. In most states, sales tax rates change many times throughout the year. Our service provides you with a method to get this information quickly and easily and with no maintenance. The ZipTax team is dedicated to providing you with the critical up-to-date information you need so you can focus on the important parts of your business.

Our Zip-Tax.com API is designed to allow programmers to submit a request to our servers from a website or application and retrieve response data from our databases. The format of the response can be returned as JSON or XML. Simply pass the desired format as part of the request. Zip-Tax.com works by submitting geographic information such as city, state, and zip code from your application or website. This data is used determine the correct sales tax information matching the provided location. Our service then returns that information to your application or website.

Getting Started

The Zip-Tax.com sales tax API uses standard Representational State Transfer (REST) principles for maximum flexibility with a wide range of program languages.

To get started, simply follow this documentation to build a reuqest using the Zip-Tax.com Request URL, parse the API Response to validate the response codes, and use the API results in your application.

API Subscription Types

Core Level API

The general Zip-Tax.com sales tax API allows jurisdiction lookups using any combination of zip code, city, and state. This API level does not provide full address level lookup and only provides county data via response. For full address level lookups, please see the Geo API section below. Note when using this method, multiple response values may be returned where multiple tax jurisdictions match the query inputs.

Geo Level API (address level)

The GEO API version of Zip-Tax.com allows queries with full address lookup. This method returns only a single response with the corresponding sales tax jurisdiction data. This is the recommended subscription type for use with our API.

Request

The API request URL is used to form your request to the API from your application.

The base request URL consists of three parts.

HTTP Request Base URL Example

curl --header "Accept:application/json" https://api.zip-tax.com/request/v40

Core Plan Level API Request

The Core API can be used with all subscription types. The API supports multiple address parameters specified in the table below.

Query Parameters

Core Plan Request Example

curl --header "Accept:application/json" https://api.zip-tax.com/request/v40?key=1234567890&postalcode=90264

Geo Plan Level API Request

The Geo API requires an active GEO subscription. The API supports valid U.S addresses passed in as a single parameter, or split into multiple address parameters.

Query Parameters

Geo Plan Request Example

curl --header "Accept:application/json" https://api.zip-tax.com/request/v40?key=1234567890&address=1111%20S%20Figueroa%20St,%20Los%20Angeles,%20CA%2090015

Response Results

Sample JSON Response

{
  "version": "v40",
  "rCode": 100,
  "results": [
    {
      "geoPostalCode": "90264",
      "geoCity": "MALIBU",
      "geoCounty": "LOS ANGELES",
      "geoState": "CA",
      "taxSales": 0.095,
      "taxUse": 0.095,
      "txbService": "N",
      "txbFreight": "N",
      "stateSalesTax": 0.06,
      "stateUseTax": 0.06,
      "citySalesTax": 0,
      "cityUseTax": 0,
      "cityTaxCode": "",
      "countySalesTax": 0.0025,
      "countyUseTax": 0.0025,
      "countyTaxCode": "19",
      "districtSalesTax": 0.0325,
      "districtUseTax": 0.0325,
      "district1Code": "218",
      "district1SalesTax": 0,
      "district1UseTax": 0,
      "district2Code": "594",
      "district2SalesTax": 0.0225,
      "district2UseTax": 0.0225,
      "district3Code": "",
      "district3SalesTax": 0,
      "district3UseTax": 0,
      "district4Code": "19",
      "district4SalesTax": 0.01,
      "district4UseTax": 0.01,
      "district5Code": "",
      "district5SalesTax": 0,
      "district5UseTax": 0,
      "originDestination": "D"
    }
  ]
}

Response Codes

The Zip-Tax.com API returns the following response codes based on request results.

Support

For questions or comments please contact us via email at: support@zip-tax.com.