Contact

We can be reached by e-mail at hello@canivetotool.com. Messages are read by Juliana Costa, who maintains the calculators.

Found a calculation error?

Corrections are the most useful messages we get. So that we can reproduce the problem, please include:

• the simulation link — use the “Copy simulation link” button and paste it into your e-mail; it carries every value you entered. Or list the values one by one;
• the result you expected and where that figure came from (payslip, termination statement, tax slip, your accountant's calculation);
• if you know it, the rule or official source you think is not being followed.

Please do not send personal documents, tax ID numbers (CPF) or payslips with names and details: the values are enough.

Other topics

Suggestions for new calculators, explanations that were unclear, and accessibility or display problems on your device are welcome too.

What we can't do

We do not give individual advice — employment, tax, legal or financial — or review specific cases such as “did my employer pay me correctly?”. For that, contact your employer's payroll department, an accountant, a lawyer or your trade union. We read every message but cannot promise a response time.

Any data you send by e-mail is handled according to the privacy policy.