Permanent modifications, which lower mortgage payments to 31% of a borrower's pretax monthly income for five years, have been given to only about a third of the 1.3 million borrowers in trial plans since the program's launch in April 2009. Most of the lawsuits allege that the three- or four-month trial payment plans are contracts, and that Bank of America and other servicers broke them by not giving permanent modifications to homeowners who made their trial payments on time and provided the necessary documentation.