|This article does not cite any references or sources. (January 2009)|
Quasi-rent is a term in economics that describes certain types of returns to firms.
Quasi-rent differs from pure economic rent in that it is a temporary phenomenon. It can arise from the barriers to entry that potential competitors face in the short run, such as the granting of patents or other legal protections for intellectual property by governments.
Alfred Marshall (1842-1924) was the first to observe quasi rents.