In 2014, Warner was sentenced to two years of probation plus community service for
tax evasion. Since 1996, he had maintained a secret
offshore account in Switzerland with
UBS, concealed at one time $107 million. Later, Warner used Zurcher Kantonalbank to maintain his offshore account. His philanthropic activities were considered when sentencing him and he paid a $53 million fine. Warner had tried to take advantage of the
IRS tax amnesty that was offered in the wake of the
UBS 2008–2010 tax scandal, but the government refused to accept him. His lawyers, including former IRS Deputy Commissioner Mark M. Matthews who is now a Member of Caplin & Drysdale, successfully used the "Olenicoff Defense" to convince the judge that Warner did not deserve the year-and-one-day prison sentence recommended by prosecutors. The defense was based on the government's treatment of
Igor Olenicoff, a California real estate tycoon. The lawyers cited Olenicoff for getting off without a jail sentence when he was sentenced for tax evasion via offshore accounts. Warner's pre-sentencing report that called for a jail sentence said his offshore account was the biggest ever found. In fact, the lawyers pointed out, Olenicoff had $240 million stashed offshore. ==Personal life==