Honestly, your accountant sucked. All the rules are about making sure value produced is taxed exactly once. No more no less. If you find a loophole out of that, you better triple check that, because it is definitely not the spirit these tax laws are written in.
Not to blame you - i too would trust a professional. Also, in Holland, accountancy is a protected profession. You can report them, because at the end of the day he/she took a risk that you would likely personally not have taken if you were aware of it.
