Good morning everyone,
I was inspired by the article published on [test.de](https://www.test.de/Steuerklasse-wechseln-Ein-Riesenplus-beim-Elterngeld-4577976-0/)
Basically, the tax class affects the net salary, and the parental allowance is calculated based on the net salary before childbirth. If the parent who stays at home and receives parental benefits after the birth is in tax class V or IV before the child is born, he or she can increase the parental allowance by switching to tax class III six months before the child is born. This allows them to significantly increase the parental allowance. I created the following [parental allowance calculator](https://visualsm.art/parental-allowance-calculator/) which provides a detailed view of what would be the parental allowance by switching to different tax classes six months before childbirth.
I am trying to demonstrate the details using plots and a detailed table.
What do you think is it user friendly and useful such a calculator?