Dan Rotta, 77, was arrested Saturday in Miami and must remain under house arrest with electronic monitoring, a federal judge ruled.
Prosecutor Sean Beaty told a judge that IRS agents estimate Rotta owes at least $9.25 million in back taxes, $10 million in interest and $6.9 million for a fraud penalty.
Rotta was charged with conspiring to defraud the U.S. and making false statements to the IRS; he faces as many as five years in prison on each count if convicted.