tax evasion
US /tæks ɪˈveɪʒən/
UK /tæks ɪˈveɪʒən/

1.
the illegal nonpayment or underpayment of tax
:
•
He was charged with tax evasion after an investigation into his finances.
•
The government is cracking down on tax evasion.
the illegal nonpayment or underpayment of tax