OECD published its annual Taxing Wages, providing details of taxes paid on wages in OECD countries.
It covers personal income taxes and social security contributions paid by employees, social security contributions and payroll taxes paid by employers, and cash benefits received by in-work families.
It illustrates how these taxes and benefits are calculated in each member country and examines how they impact household incomes.
The results also enable quantitative cross-country comparisons of labour cost levels and the overall tax and benefit position of single persons and families on different levels of earnings.
Full report, here
Portugal specific report, here