Resources: https://freshportugal.com/mytaxes_enter_income_2023_port
https://pt.icalculator.com/income-tax-rates/2023.html
https://pt.icalculator.com/income-tax-rates/2023.html https://pt.icalculator.com/salary-calculator/annual/2023.html
https://www.tytle.io/how-it-works https://freshportugal.com/mytaxes_calculate_tax