This is my main reason for having a BV in the first place: to ensure that even though the business takes in very variable amounts of money my private income stream is extremely regular. It makes taxes a whole lot simpler. The only thing I still have to take care of privately are the occasional dividend payment but that's an easy thing to do.

Anybody with > 100K euros in income from consultancy (which should be most of them!) living in NL should consider doing the same thing. There is some overhead but that's easily farmed out to an administrator.