HMRC accepts that it may not be possible for an employer to
ensure that all the selected employees keep their receipts (or
produce a contemporaneous record of their expenses) for the whole
of the sampling period. There will be cases where the employer
obtains responses from less than 100% of the chosen employees, and
others where the expenditure is not 100% vouched.
A sample which is less than 100% complete may nevertheless
contain sufficient information to be statistically valid. Officers
should not automatically reject the evidence of a sampling exercise
which falls
slightly short of “10% for a month”
(see
EIM05210). This is an area where
judgement is needed. The officer has to decide whether, having
regard to
he or she can be satisfied that the evidence produced is sufficient to support a scale rate subsistence payment of a particular amount.