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Unified Tax API

Note: The Unified Tax API is no longer available.
This profile is retained for historical purposes only.

Unified Tax is a simple service that lets users look up the necessary sales-tax rate and regulations for a given location in the United States. Users can enter their address and get back sales tax rate as well as a link for the current regulations. The service can also provides address normalization by retrieving the canonical address from the data supplied. The API provides access to this functionality for integration into a third party application. It uses RESTful calls and responses are formatted in JSON.

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Unified Tax: Highlights

Sales tax lookup service
Data Formats
API home

Unified Tax: Specifications


Client Install Required

Signup and Licensing

Signup Requirements
Developer Key Required
Account Required
Commercial Licensing
Non-Commercial Lic.
Data Licensing
Usage Fees
Program Fees
Certification Program
Usage Limits
Terms of Service


Authentication Model
SSL Support
Read-only Without Login


Vendor API Kits
Community API Kits
API Blog
Site Blog
API Forum
Developer Support
Console URL

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