Explanation:

The difference between revenue expenditure and revenue receipts is revenue deficit.
A revenue deficit occurs when the net income generated, revenues less expenditures, falls short of the projected net income. This happens when the actual amount of revenue received and/or the actual amount of expenditures do not correspond with budgeted revenue and expenditure figures. This is the opposite of a revenue surplus, which occurs when the actual amount of net income exceeds the projected amount.