Employee benefits and share based payment Chapter 8
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Explanation of terms used
Current service cost – the increase in the
actuarial liability arising from employee
service in the current period.
Past service cost – the increase in the
actuarial liability relating to employee
service in previous periods but only arising
in the current period - usually due to an
improvement in retirement benefits being
provided.
Interest cost – the increase in the pension
liability arising from the unwinding of the
discount as the liability is one period closer
to being settled.
Expected return on assets – the expected
return earned from the pension scheme
assets.
Settlements or curtailments – the gains or
losses arising when employees transfer out
of the pension scheme.
Actuarial gains or losses – increases or
decreases in the pension asset or liability
that occur due to the assumptions of the
actuary being different to what actually
happened, e.g. the investment income on the
assets was greater than expected.
Treatment of actuarial gains and losses
As detailed above, actuarial gains and losses
arise because the actuarial assumptions will
not have been wholly correct. IAS 19 allows
a choice of how to deal with these gains and
losses.
1 If the net cumulative unrecognised
actuarial gains and losses at the end
of the previous period exceed the greater
of 10% of the present value of the
pension liability or 10% of the fair value
of the plan assets, then a portion of the
actuarial gains or losses must be
recognised as income or expenses
immediately. The portion recognised is
the excess divided by the expected