If you make CHF 50'000 a year living in the region of Valais, Switzerland, you will be taxed CHF 7'799. That means that your net pay will be CHF 42'201 per year, or CHF 3'517 per month. Your average tax rate is 15.6% and your marginal tax rate is 26.8%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of CHF 100 in your salary will be taxed CHF 26.76, hence, your net pay will only increase by CHF 73.24.
A CHF 1'000 bonus will generate an extra CHF 732 of net incomes. A CHF 5'000 bonus will generate an extra CHF 3'662 of net incomes.
NOTE* Withholding is calculated based on the Valais tables of Switzerland, income tax. For simplification purposes some variables (such as marital status and others) have been assumed. This document does not represent legal authority and shall be used for approximation purposes only.