Earlier quoted context omitted.
They would need to prove they suffered loss (and an actual error!). That's not clear in this situation. Not paying taxes you were due isn't extra costs due to your accountant, although fines and interests may be.
So it doesn't work like this? A: Hey B, how do we have to set up our company/foundation so this doesn't blog up and we have to pay non-sensical taxes only because of the way we are set up? B: Do it this way: ... (later) Z: A, you have to pay taxes because your setup is strange and makes no sense to our rules. B: Damn, we're liable for the bad advice we gave... (honest question)
Legally, the hired professional is an advisor. The board/management are collectively responsible for picking a good advisor and double-checking his/her recommendations.
Bottom line: no one takes responsibility for anything (unless they're on the board) and you are on the hook for everything.
This also applies to lawyers, property professionals, medical professionals, engineers, architects, and so on.
Of course this is outrageously unfair, but the reality is that winning compensation for incompetence and malpractice is incredibly hard and expensive - and most professional contracts include explicit disclaimers of responsibility in an attempt to make it even harder.