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13th Salary

Calculate Brazilian 13th salary (Christmas bonus) with INSS and income tax. 1st and 2nd installments. 100% free.

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How the 13th Salary Is Calculated

Free Online 13th Salary Calculator

Our free online 13th salary calculator provides accurate results instantly. Whether you are a professional, student, or simply need a quick calculation, this tool handles all the complexity for you with a clean, easy-to-use interface that works on any device.

Key Features

  • Instant and accurate calculations using official formulas
  • Clean, intuitive interface with real-time results
  • Works on desktop, tablet, and mobile devices
  • No registration, download, or installation required
  • Results can be copied or shared with one click
  • Dark mode support for comfortable viewing

The calculator uses precise mathematical formulas and official data tables where applicable. All computations are performed in real time as you enter values, providing immediate visual feedback. The tool handles edge cases and validates inputs to prevent common errors that could lead to incorrect results.

Everything runs in your browser using JavaScript. No data is transmitted to external servers, so your information stays completely private. The tool works offline once loaded and is optimized for both desktop and mobile devices with a fully responsive layout that adapts to any screen size.

This calculator is one of many free tools available on facilita.tools. Explore our collection of over 100 online calculators and utilities designed to make your daily tasks easier. All tools are free, require no registration, and feature a modern dark-mode interface for comfortable use at any time of day.

Frequently Asked Questions

When is the 13th salary paid?
The 1st installment (50%, no deductions) is paid between February and November. The 2nd installment (remainder, with INSS/IRRF) by December 20.
Is the 13th salary proportional?
Yes. If you worked less than 12 months in the year, the amount is calculated proportionally. Each month with more than 15 days worked counts as a full month.
What are the 13th salary deductions?
Deductions are INSS (progressive, up to 14%) and IRRF (progressive, up to 27.5%). Both are applied only on the 2nd installment.