Could also be useful to partners in an LLC that can't be paid by W-2.
Smart idea.
Smart idea.
True story - our accountant sent me my personal bill last week and I had a heart attack until I remembered I have an account with cash in it specifically FOR my taxes this year. It was a "duhhh" kinda moment, but I've been so programmed as a consultant to freak out about 1099 taxes, so it was my default reaction even after spending the whole year building a solution.