economic rent

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun economics the amount of recompense paid to a factor of production on top of its transfer earnings; this does not encompass costs incurred during the process of production or service

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the return derived from cultivated land in excess of that derived from the poorest land cultivated under similar conditions