Where the first chargeable period affected by the herd basis election is-
the time limit for making the election is -
a) two years after the end of the first chargeable period for
which the taxpayer-
in respect of the farming trade, by reference to a period during
which the taxpayer kept a production herd of the specified class;
or
b) in a commencement case, two years after the first
accounting date, if later.
In either case, the election takes effect from when the
farmer first started keeping a production herd of the specified
class.