About Summatio
Purpose
Summatio is a collection of free calculators for salary, taxes, real estate, savings, loans, and public benefits. The goal is not to replace professional advice, but to make common calculations easier to understand and verify.
Method
Each calculator combines an interactive tool with explanatory content, FAQs, assumptions, and disclaimers. Inputs are processed locally in your browser; financial data is not transmitted to Summatio servers.
Quality and Updates
Tax, social security, and finance values are reviewed regularly. If laws change or an error is reported, the affected calculator is updated.
Contact
Corrections, suggestions, and feedback are welcome via the contact page.