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Tax Data Service RPC API - Developers

The service provides sales and use tax rates by location within the United States and Canada. A list of taxing jurisdictions with authority in a location may also be generated. API methods accept submission of a five-digit U.S. ZIP code or an abbreviation specifying a Canadian province, then return current sales and use tax rates. If the submitted ZIP code or province matches multiple city/county combinations, multiple sets of data cover each of the taxing jurisdictions.