Roughly, average debt over the year = opening debt+closing debt/2
9542+2888=12430 /2=6215 (actual level would be smaller as more debt was repaid in the first half than the second, but this is conservative).
Finance costs = 860k as per the revised statment
860k/6215k = 13.8% pa on the loans.
last year was approx 450k on far higher levels.
why was so much paid out in the last quarter? Why is the finance charge so high?