Vero.fi states that

For each child under the age of 18 in your custody, you are entitled to a €50 increase to the maximum amount of the credit for work income. If you are a single parent, the increase is doubled.

This seems like a joke. This is like 4.16€ per month. Is this really everything they give, or will it automatically increase over the years?

I know that there are also other benefits for parents, but I do not understand why there is a separate law to give each parent 4.16€/child/month via taxes.