To use this API users must enter a US zip code.

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US Postal Tax API is a tool that provides users with accurate U.S. tax rate information through a zip code.

The GET Tax by Zip Code endpoint returns the sales tax rate for a specified US zip code. The response is provided in JSON format, containing the tax rate as a decimal value.

The key field in the response data is "rate," which indicates the tax rate applicable to the specified zip code. For example, a response might look like: {"rate": 0.1105}.

The response data is structured in JSON format, with a simple key-value pair. The key "rate" corresponds to the tax rate, making it easy to parse and utilize in applications.

The endpoint provides information specifically about sales tax rates based on zip codes. It does not include other tax types like property tax or use tax.

The data is sourced from authoritative government resources, ensuring that the tax rates are accurate and compliant with current U.S. tax regulations.

Data accuracy is maintained through regular updates from trusted government sources, along with quality checks to ensure the information reflects the latest tax regulations.

Users can customize their requests by specifying different US zip codes in the API call. Each request will return the corresponding tax rate for the provided zip code.

Typical use cases include calculating sales tax for e-commerce transactions, integrating tax calculations into point-of-sale systems, and automating tax reporting in accounting software.

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