1.

tax evasion
逃税

[双语解释]

The illegal attempt by a taxpayer to avoid paying his or her taxes.
纳税人企图逃避纳税的非法行为。

例句:

Bill was found guilty of tax evasion and owes the IRS over $60,000 in back taxes.
比尔被判逃税罪,他现在仍欠国内收入局六万多美元的滞纳税金。