nondeductible

from WordNet (r) 3.0 (2006)

nondeductible
    adj 1: not allowable as a deduction [ant: {deductible}]

from The Collaborative International Dictionary of English v.0.48

nondeductible \nondeductible\ adj.
   not allowable as a tax deduction; as, political contributions
   are nondeductible. Opposite of {deductible}.
   [WordNet 1.5]