Have been considering switching to Universal Credit in the new year just to get it over and done with. So I filled in the calculator this evening and apparently I'll be almost £200 better off each month on UC 
What on earth do they calculate that I don't already get? I feel like it can't be right even though I've filled it all in accurately. Has anyone experienced it being way off? Or is it always round about right?
I didn't think anyone was better off on UC!