I have a six foot tall money tree that I have had for ten years. Up till now it has thrived very well. Its leaves starting from the bottom are spotted brown and then the whole leaf turns yellow and falls off. Not a whole lot of brown spotting, just three maybe four spots of brown. Then all yellow and dead leaf. And this has been going on for a couple of months. I never gave it plant food until about two months ago and this is about the time I noticed it was dropping leaves. PLEASE help before I lose it. I've had this tree to long to let it die now!
It could be developing a fungus. Treat the plant with fungicide and see if this helps. Also remove affected leaves.