Quote Originally Posted by V.T. Marvin
I have said this earlier: DO NOT USE PROTECTORATES IN EB! It is beacuse the protectorate gives you all its surplus money. But with EB money assistance script, it gets immediately a significant money assistance which is in turn transfered to you again, and again, and again... Basically, having a protectorate in EB means a huge exploit just giving you an incredible ammount of cash each turn, which is neither realistic nor fun.

As a workaround I would recommend to use force diplomacy to obtain an equivalent of protectorate, i.e.: alliance, trade rights, military acces (and, optionally, even some reasonable tribute). It gives you all the benefits without that money cheat.
Didn't think about that, thanks for pointing it out!

I just started a Casse campaign (and until I've conquered the islands I won't land on the continent, so I won't have had this problem for some time; but still, it's good to know!