Statws B
Pwnc:
Cyllid ac ystadegau
Ffynhonnell:
TermCymru
Enw, Lluosog
A negative externality is a cost that is suffered by a third party as a result of an economic transaction. In a transaction, the producer and consumer are the first and second parties, and third parties include any individual, organisation, property owner, or resource that is indirectly affected.