From The Collaborative International Dictionary of English v.0.48 :
nett \nett\ adj.
remaining after all deductions; same as net a., 3.
Contrasted to gross. [Brit.] [Narrower terms: take-home]
Syn: net, clear.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
take-home
adj 1: (of salary or wages) remaining after all deductions
including taxes