Provides open JSON endpoints, an MCP server and embeddable calculators for UK corporation tax and related company-tax tools. Responses return tax estimates, deadlines, penalties and other company-tax calculations with no API key required.
Build a quick web app to estimate UK corporation tax, a chat assistant that answers filing deadlines, or add deadline/penalty checks to accounting software. You can call the JSON API, use the MCP server for AI assistants, or embed the calculators on your site. The tools are free and require no key, and they return the same results as Taxley’s calculator pages. There are per-IP rate limits; contact Taxley if you need higher limits.
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