I know I have to impute interest unless there is some odd exception. But my real question is I do the interest and claim less principal on the 6252 but what happens to the balance of the prinipal contract? I have contract for 30,000 get paid 30,000 over the years which 3,000 goes to interest and 27,000 goes on to the 6252. what about the balance of 3000 that should be reported on 6252? they are not going to get any more money