The split between the liability and equity components of a
compound financial instrument is done on issue and is not
subsequently revised, even when exercise of the conversion option
becomes more likely.
The company must, on initial recognition
No gain or loss arises on initial recognition.
CFM16190a gives an example of the
process.
Thereafter, the liability component is measured at amortised
cost, with changes going through the profit and loss account. On
conversion of a convertible, the company derecognises the liability
component and recognises it as equity. The original equity
component remains as equity (although it may be transferred from
one line item within equity to another). There is no gain or loss
on conversion at maturity.