and yes, i am playing as the commander

no by default it usually pulls money from personal funds this is to prevent players in large servers just buying a bunch of static at and screwing the team. As commander you can approach the HQ flag and withdraw monoey from the faction funds so if you ever need funds as a commander just use that.

but that can get you taken out of power by corruption.

only if you're in a server with more than one person and you have the settings that let you turn off comander switching