Whenever I hear people say "charge him a bit but then hide it in a savings account to give him later" it makes me cringe. My dad did this to my older brother, but charged 50% of his income. There were times my brother asked for a break, or some help, cus he couldn't afford it. Stepmom said no, demanded the money. He was skipping meals to pay rent. When he left and they gave him the savings, he felt betrayed and unloved. It destroyed their trust.

So please, be compassionate if you're gunna pull that move. Or just don't lie about where the money is going.