I have recently been informed that the secured loan I have has reached the end of it's fixed term and am now going to be put onto a higher rate which results in an additional £60 per month. I asked for a settlement figure with the idea that i will try to add onto my mortgage. We originally borrowed 27k and we have paid 18k so far in total over 5yrs (obviously the interest is paid 1st) but they want 31k to settle the account!! they mentioned something about a rule of 79? is this right?