How are corporate taxes calculated?

I can’t find any info on this. Sometimes it’s 0.

A very quick code dive later:

It is one-fifth of your previous hourly balance. If you have a CFO, then you only have to pay 3/4 of that cost. Theres also an additive thing there which I’m not sure about, nor do I know exactly what hourly balance refers to, but that should give you a rough idea of what it is