IRS Commissioner Charles Rettig reiterated his intent to crack down on the use of complex offshore tax evasion techniques involving intellectual property.

“I’m OK with the Internal Revenue Service pushing the field with things like transfer pricing,” Rettig said April 1 during a Tax Executives Institute conference in Washington. “This is not a commissioner who believes that the IRS loses because a judge rules against us in a transfer pricing case. It’s a commissioner who thinks the IRS loses...