Is there a maximum amount of money u can have in your 'bank'?

Question

I have 9.5 million and was wondering what happens when I get to 10m.

Answer 1

Simple answer, no. You can get as much money as you want with no limit.

Answer 2

Yes. The limit is $4,294,967,295. This is the largest 32 bit unsigned integer. Upon reaching this amount there is some dialog between Homer and Frink. It ends with a notice from EA that the maximum cash has been reached and that you might consider spending some of it on the Sit-N-Rotate or a few thousand Blood Mobiles. The cash number display turns to red numbers indicating the maximum amount has been accumulated and no further money is added.