I view anything over $1 million dollars to be a large amount of cash. Under a million is still nice, but its not enough where I would feel truly comfortable. A million dollars invested wisely enough can be turned into multi-millions in a 7 year time frame. Even just socking it away in the Vanguard Wellington Fund and you would nearly double your cash to 2 million. On the other hand 300,000 just turns into 600,000 in that same mutual fund. It could be turned probably into over a million with aggressive enough investing. 600,000 is still a nice amount of cash, but its not a million.