To see a bank in your dream denotes your desires for financial security. The dream may be trying to offer reassurance and that your fears of financial instability are unfounded.
To dream that you are robbing a bank signifies that you are expending too much energy and are in danger of depleting your inner resources. Alternatively, it indicates that money that is due to you is being delayed.
Dreaming that someone is robbing a bank or that you witness a bank robbery symbolises lack of financial stability in your waking life.