EIM25550 | Car fuel benefit: calculating the cash equivalent
From HM Revenue & Customs · Employment Income Manual
Section 150 ITEPA 2003
The car fuel benefit charge is incurred as detailed at EIM25510.
The cash equivalent of the charge is reduced to nil for a particular tax year if either of the conditions in EIM25555 is met.
Otherwise, the cash equivalent:
is calculated for a full tax year as shown at EIM25560
is then reduced proportionately if the car is unavailable for part of the year, see EIM25565 and
can also be reduced if free fuel is withdrawn in a tax year and not reinstated, see EIM25570 and
can also be correspondingly reduced if a reduction is made to the cash equivalent of the benefit of a car to an employee because the car is shared, see EIM25575.
Years prior to 2003/04
The fuel benefit charge had a different basis in these years.