
Chapter 15: Capital gains tax reliefs
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2.3 How much gain can be deferred?
If all the sale proceeds are reinvested, it is presumed that the taxpayer will not have
cash available to pay any tax on the gain. All the gain arising on the disposal can
therefore be deferred and none of the gain is taxed immediately.
If some of the sale proceeds have been retained, it is presumed that the taxpayer
does have some cash available to pay some tax on the gain. The amount of relief
available is therefore restricted and some of the gain is taxed immediately. The
amount that is taxed immediately is the lower of:
all the gain, or
the sale proceeds not reinvested in QBAs.
2.4 What happens to the deferred gain?
The treatment of the deferred gain depends on whether the replacement asset is a
depreciating asset or a non-depreciating asset:
Type of QBAs
purchased:
Non-depreciating QBAs
Depreciating QBAs
Expected life More than 60 years. 60 years or less.
Examples Freehold land and buildings.
Leasehold land and buildings
with more than 60 years left
on lease.
Fixed plant and machinery.
Leasehold land and buildings
with up to 60 years left on lease.
Mechanics of
the deferral
The gain to be deferred is
deducted from the cost of
the new asset to calculate
the revised base cost of the
replacement asset (i.e. the
cost minus rollover relief).
On the subsequent
disposal of the
replacement asset, the
revised base cost is
deducted in the gain
computation instead of the
original cost – thus
increasing the gain
chargeable on this
disposal.
The gain to be deferred is not
deducted from the cost of
replacement asset.
A separate record of the
deferred gain is kept.
The deferred gain is taxed 10
years after the date the
replacement asset was
acquired unless, within the 10
year period, the replacement
asset is either sold or ceases to
be used in the trade.
If sold, a normal computation
of the chargeable gain on the
replacement asset is made,
using the original cost.
The original gain has
therefore been rolled over
(i.e. deferred) until the
disposal of the
replacement asset.
In this situation, the deferred
gain is sometimes referred to
as a held-over gain, rather
than a rolled over gain.