The Internal Revenue Service will establish a new work unit to focus on large or complex pass-through entities. This is another part of the IRS effort to increase attention to high-income compliance issues.

 A Chicago, Ill.-based tax preparer, who spent time in federal prison for tax preparation crimes, has been sentenced to 13 years in prison for a new series of state offenses.

The Internal Revenue Service intends to hire more than 3,700 revenue agents to expand enforcement work involving complex partnerships and large corporations and high-income individuals. The focus is on those with annual incomes of more than $400,000 and partnerships with complex issues.