It's not only tax class, that impacts your net income. There's a lot more to take into account when calculating your net income. You got children? Distance to y

It's not only tax class, that impacts your net income. There's a lot more to take into account when calculating your net income. You got children? Distance to your working place, even working from home reduces your tax load. 100k gross can range between 50 and 75k net.