WASHINGTON–A Montana couple pleaded guilty Wednesday in federal court in Missoula, Montana to one count of conspiracy to defraud the United States, the U.S. Department of Justice reported today.

According to the government’s offer of proof, Peggy DeYoung and John DeYoung, both 71, have not filed an individual income tax return since 1998. From 2007 through 2011, Peggy DeYoung earned income through her ownership interest in two companies that own Southern California mobile home parks. The DeYoungs also enlisted the services of Joseph Hill of Creative Consulting Group to establish a number of purported trusts. The DeYoungs opened bank accounts in the names of those trusts using fabricated taxpayer identification numbers and paid personal expenses from the accounts. The plea agreement specifies that the DeYoungs caused the U.S. Treasury a tax loss of $376,350.

Sentencing is scheduled for April 21. The DeYoungs face a statutory maximum sentence of five years in prison, a period of supervised release, restitution and monetary penalties.