Your tax is showing as 15%.
Most of those corps would be good if you ran them a bit differently. Like dont sell products they make for less than their quality. Add at least 20 (or more) to the quality made, not 10 below, you're throwing money away. Upgrading them would help a lot too, unless you are thinking of going down a self supply route...difficult to do I believe.
Papa smirff needs the same advice too.
If you want further help come to chat or msg me at gallant gesture.
Crafty