It is especially shown when central banks lose control of the currency regardless of interest rate movement, in context of unsystematic devaluations mostly.
He continued that, although the sudden jolt of exchange rate movement had initially seen clients fly into action, this too had petered out as the rates steadied.
Currently, comparing mortgage rates is "almost impossible" because customers can not predict whether their bank will be a better or worse deal after the next rate movement, he said.
When an accrued item is settled, the difference due to exchange rate movement in the amount accrued and the amount settled is treated as foreign exchange gain or loss.