Employer costs and benefits

company car tax employer costs

Providing a company car to an employee or director for private use has financial implications for the employer as well as the vehicle recipient. Under the current tax system, the employer is liable to pay Class 1A NICs to reflect the Benefit-in-Kind (BIK) provided to the employee.

Company ownership of vehicles also impacts on how capital expenditures can be set against a company's profit. Whereas most cars use standard capital allowances, some Ultra Low Emission Vehicles are eligible for a 100% first-year write down as part of the Enhanced Capital Allowance scheme.

Employer Class 1A NICs – April 2022 to March 2023

To reflect the benefit-in-kind provided, Class 1A National Insurance Contributions (NICs) must be paid by the employer for each vehicle provided to an employee for personal use. As with company car tax, Class 1 NICs based on the vehicle's P11D value and relevant BIK rate, which is determined by the official CO2 emissions and fuel type.

In the Spring Statement 2022, Chancellor Rishi Sunak announced an increase to the Primary Threshold for Class 1 National Insurance contributions (as well as Lower Profits Limit for Class 4 NICs), aligning it with the personal allowance for income tax, which is set at £12,570 per annum. The increase is intended to take effect from 6th July 2022.

The measure aims to help almost 30 million working people, with a typical employee benefitting from a tax cut worth over £330 in the year from July. It means that around 70% of National Insurance contributions (NICs) payers will pay less NICs. This should mean that if an employee within that 70% has a company car provided for them by their business, the business will pay less for the Class 1A NICs, which reflects the Benefit-in-Kind (BIK) provided to the employee.

The level of NI contributions is also determined by an annual percentage rate which is announced in the Budget – and which is currently 15.05% in financial year 2022/23. The basic calculation to determine the amount of Class 1A NICs payable is as follows:

NIC = P11D value x BIK rate based on CO2 x 15.05%

See BIK rates 2022 - 2025 for current and future BIK percentages and/or search cars by BIK rate to find all new cars with particular BIK rate vales.

Learn more about BIK rates and company car tax

Enhanced Capital Allowances to March 2021

In addition to standard capital allowances available for company vehicle ownership, businesses are able to claim an Enhanced Capital Allowance (ECA) for low emission vehicles if used for business related activities.

Until end March 2021, battery electric vehicles and the greenest ultra-low emission vehicles are eligible for a 100% 'write-down' in the first-year of purchase. To qualify, the vehicle must be brand new.

Businesses of all sizes can claim the 100% allowance on a car provided that:
* the car is 'unused and not second hand';
* it is electric or has CO2 emissions of not more than 50 g/km (April 2018 to March 2021);
* the expenditure is incurred before 31 March 2021.

Annual write-down rates for cars registered between April 2018 and March 2021
Capital Allowance Rates  Allocation CO2 (g/km)   
April 2020 - Mar 2021
CO2 (g/km)   
April 2021 - Mar 2024
100% FYA (first year) Enhanced Up to 50 g/km 0 g/km
18% WDA (annual) Main rate 51-110 g/km 1-50 g/km
6% WDA annual Special rate Over 110 g/kmOver 50 g/km

Source: HMRC Mar 2020.

Advisory Fuel Rates from June 2020

Advisory Fuel Rates (AFRs) are HM Revenue and Customs' recommended reimbursement amounts for drivers reclaiming business mileage - often in company vehicles. These rates apply either to reimburse employees for business travel in their company cars, or when required to repay employees the cost of fuel used for private travel.

These figures are updated every quarter, with rates covering the use of petrol, diesel, LPG, and electric powered vehicles. For the purpose of these rates, hybrid models - both conventional and plug-in - are considered as petrol or diesel vehicles.

Those businesses that pay a rate for business travel no higher than the AFRs, HMRC will accept there is no taxable profit and no Class 1A National Insurance to pay. Businesses can use their own rates if circumstances reflect that these would be more accurate, though they must demonstrate that the actual fuel cost per mile is higher, otherwise any excess will be taxed.

Advisory Fuel Rates - Petrol & LPG - from 01 June 2020
Engine size   Petrol amount per mile LPG amount per mile
1,400cc or less 10 pence 6 pence
1,401cc to 2,000cc 12 pence 8 pence
Over 2,000cc 17 pence 11 pence
Advisory Fuel Rates - Diesel - from 01 June 2020
Engine size   Petrol amount per mile
1,600cc or less 10 pence
1,601cc to 2,000cc 12 pence
Over 2,000cc 13 pence
Advisory Electricity Rates - Electric Vehicles- from 01 June 2020
Motor power   Electricity amount per mile
Any 4 pence

Source: HMRC 2020.

Search for cars by BIK rate

Chris Lilly

Author:Chris Lilly
Date Updated:3rd Jul 2020

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