Class 1A NICs have been payable on the taxable benefit of a
provided car since 6 April 1991. Although the extension of Class 1A
NICs to most taxable benefits, from 6 April 2000, changed the way
in which the total amount of Class 1A NICs are calculated, the
rules for determining whether Class 1A NICs are payable on provided
cars remained largely unaltered.
The following paragraphs explain how Class 1A NICs are
calculated on provided cars from 6 April 2000. For guidance on
Class 1A NICs on provided cars and car fuel before 6 April 2000 see
NIM17500.
Class 1A NICs liability arises on the benefit of a car provided on or after 6 April 2000, if the car is
As the benefit of a car provided for private use attracts a car
benefit charge under the rules of Chapter 6 of Part 3 of ITEPA 2003
(before 6 April 2003 - section 157 of ICTA 1988), Class 1A NICs are
payable on the cash equivalent of the benefit, ascertained in
accordance with section 120 of ITEPA 2003 (before 6 April 2003
– section 157 and Schedule 6 of ICTA 1988).
The rules for calculating the cash equivalent of a car
provided for private use are explained at EIM23100 (before 6 April
2003 - SE23000) onwards and apply equally to Class 1A NICs.
For tax years where the cash equivalent of a provided car is
calculated by reference to the amount of business mileage
undertaken by the employee, the rules for determining whether the
mileage is business mileage are the same for both tax and NICs.
These rules are explained at SE23080 onwards.
Although Class 1A NICs are calculated on the cash equivalent
of a car determined for tax purposes, there are a number of special
cases where either
These special cases are listed at NIM16001 and, with the exception of NIM16003, the guidance applies equally to Class 1A NICs due from 6 April 1991.
For guidance on the treatment of fuel provided for use in a car which attracts a car benefit charge, see NIM16170 onwards.