Sources & methodology

Every Swiss calculator uses one shared calculation engine. The website, the API and future AI integrations all call the same code, so they always return the same answer.

Principles

• Every tool page explains its formula, its assumptions and its official sources.
• Each tool shows the date its rules were last checked.
• We never publish invented facts, figures, rankings or testimonials.
• Where rules vary by canton or contract, we say so.

Limits

Results are for information only and are not legal, tax or financial advice. For binding answers, use the linked official sources.