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Reporting a wrong number

The most useful reports are about a specific comune. Municipal surtax schedules change through the year, and a comune that publishes late, amends a threshold or introduces brackets can leave the dataset behind. If a figure does not match your payslip, that is worth knowing about.

A report is actionable when it carries four things: the comune, the gross annual salary you entered, the net figure the site showed, and the figure you believe is correct with its source. The share button on a result produces a link that encodes every input, which saves describing them one by one.

Please do not send payslips, contracts or personal documents. The four facts above are enough to reproduce and diagnose the problem, and nothing else needs to change hands.

For developers and agent builders

The public API, the MCP server and the in-page WebMCP tools are documented on the developer documentation page. Questions about integrating them are welcome through the same channel.

The machine-readable description of every surface lives in the discovery catalog at /.well-known/ard.json, and the guidance an agent should follow is published as a skill. Those are the two documents worth reading before asking.

What this project cannot do

It cannot give personal tax advice, review your specific situation, or tell you which regime you qualify for. Those are questions for a commercialista, and answering them from a web form would be worse than not answering them at all.