avoision

 
Pronunciation: /əˈvoɪʒ(ə)n/
(also tax avoision)

noun

[mass noun]
  • the arrangement of one’s financial affairs so as to avoid or minimize tax liability in such a way that it is not clear whether this constitutes lawful avoidance of tax or illegal tax evasion: tax avoision is a consequence of the web of tax rules that has undermined compliance [as modifier]: the higher the tax rate, the more popular the avoision schemes

Origin:

1970s: blend of avoidance (see avoid) and evasion