Here's my situation. I was awarded SSDI late in October last yr with benefits beginning June 2007. I also was on LTD. I received the backpay in late January 2010. I paid back LTD the overpayment and only had about 11 grand leftover. So does the 11 grand get added to my already monthly benefits ,then that would send me to about 32 grand at the end of the yr.,including the monthly 100 dollar LTD payment. Would everything over 25 grand be taxable or how does that work?