About Calcula Já
Who is behind it
My name is Juliana Costa and I work as a payroll analyst (analista de departamento pessoal) in Curitiba, in the state of Paraná, Brazil. My day job is running payroll, working out vacation and termination pay and, above all, answering questions. Lots of them. “Why did my take-home pay drop when my salary went up?”, “How much do I get if I resign now?”, “What will it cost to hire one more person?”.
Most of these questions have a fairly simple answer, but it is scattered across laws, ordinances and tables that change every year. I started building spreadsheets to explain the numbers calmly, showing where each amount came from. Calcula Já is the tidied-up version of those spreadsheets, open to anyone.
What the site is
- A set of calculators that show the workings step by step, with the legal basis for each item.
- Tables with an effective date and a link to the official source — INSS, the Receita Federal (Brazil's tax authority) and the legislation published on the Planalto website.
- Explanations written the way I explain things at work, including in English and Spanish for people who hire or work in Brazil from abroad.
What the site is not
It is not an accounting or law firm and does not give individual advice. Results are estimates based on the general rules. Collective agreements, averages of variable pay, absences and specific arrangements change the outcome, and the final word belongs to the employer's payroll, an accountant or an employment lawyer. The site has no connection with any government body.
Independence
There are no ads, sponsored links or partnerships with banks, lenders or firms. No company pays to appear in results or to influence any text. When a rule changes, the update follows the official text, not anyone's opinion. How I choose sources and round values is described under methodology and sources.
Get in touch
Found a figure that doesn't match your payslip, or a rule that is out of date? That helps a lot. See how to send it on the contact page.
Calcula Já (canivetotool.com) is an independent website, not affiliated with Caniveto.
Updated Nov 13, 2026