Što se termina prijeboj ili kompenzacija tiče, pozvala bih se na ovo ranije pitanje:
http://www.proz.com/kudoz/english_to_croatian/law:_contracts...

Izjava o prijeboju se u biti odnosi na oblik prijeboja koji je jednostran, unilateralan.

Set-off
Discharge of opposing debts where two persons have outstanding money claims against each other. The result of set-off, which can either take place by voluntary agreement or be compulsorily imposed through a unilateral declaration of set-off (kvittningsförklaring) by one of the parties, is to extinguish the two claims to the extent that they cover each other.
http://www.eurofound.europa.eu/emire/SWEDEN/ANCHOR-KVITTNING...

Kompenzacija (engl. compensation, set off, njem. Kompensation, Aufrechnung) ili prijeboj je prestanak obveze obračunavanja protutražbine s tražbinom.
Do prijeboja može doći na osnovi ugovora, na osnovi zakona ili po samom zakonu (ex lege). U skladu s tim osnovama, razlikuju se sporazumni prijeboj, jednostrani prijeboj i prijeboj po samom zakonu.
Jednostrani prijeboj nastaje izjavom volje jedne strane nakon što su ispunjene zakonom predviđene pretpostavke.
http://limun.hr/main.aspx?id=20395&Page=2

Declaration of Set-off
The set-off is made by declaration to the other party. The declaration is void, if made subject to any condition or limitation of time.
http://int-recht.jura.uni-muenchen.de/~Dominique/toledo/seco...