Let's say I rent out a property for $1,000 a month.
If it is now June, my expected income through to the end of the year is $6,000.
But the contract will end prematurely at the end of September. Which means that the last three months of the year, which could have earned me $3,000, will not.
What is the proper word to describe this sum ($3,000) which had been expected, but is not anymore?
Note: I need a way to describe both July-Sep, and Oct-Dec.