Profit is what is gained, usually in monetary terms, after costs are accounted for.
It can be considered as payment for having made available the net investment (like interest), payment for the risk, and, if not already accounted for as costs, for the work the worker has done. This could be back-breaking work, or it could be of the more cerebral kind.
In neo-classical economics, there are a number of different kinds of profit:
- Normal profit
- Abnormal or supernormal profit