The Federal Housing Finance Agency’s announcement last week that Fannie Mae and Freddie Mac will increase their guarantee fees on new single-family MBS is likely just the first step in a progression of fee hikes over the next two years, MBS analysts predict. The across-the-board 10 basis point increase in guarantee fees for single-family MBS will take effect April 1, according to announcements by the two government-sponsored enterprises this week. The fee hike implements provisions in the Temporary Payroll Tax Cut Continuation Act of 2011, H.R. 3765, passed by Congress and signed by...