Company Cars

Navigating Company Cars: Understanding Tax Implications and Importance of Professional Guidance

The allure of company cars is undeniable, providing convenience and a symbol of status to employees. However, diving into the world of company cars comes with a web of tax implications, often overlooked in the initial excitement. These involve Benefit in Kind (BIK), P11D forms, and Class 1A National Insurance contributions. Therefore, consulting with an accountant before acquiring a company car is paramount to avoid unwarranted financial surprises and ensure compliance with tax obligations.

Understanding Benefit in Kind (BIK)

A Benefit in Kind (BIK) is any non-cash benefit that employees receive in addition to their salary, which includes company cars. The BIK value of a company car is determined by several factors including the car’s list price, CO2 emissions, and fuel type. The value of the BIK is crucial as it affects the amount of tax an individual pays.

The Role of P11D Forms

P11D forms play a crucial role in the realm of company cars, acting as a detailed record of the value of benefits and expenses provided to the employee by the employer. Employers are required to submit P11D forms to HMRC, detailing the BIK values received by each employee, including those stemming from company cars. This form is pivotal in calculating the amount of tax owed by the employee.

Class 1A National Insurance Contributions

In addition to the tax implications arising from BIK, employers also need to consider Class 1A National Insurance contributions. These are payable by employers based on the value of the benefits provided to employees, including company cars. The contribution is calculated as a percentage of the total BIK value provided to all employees.

The Importance of Accountant Consultation

Before deciding to get a company car, it is vital to consult with an accountant to understand fully the associated tax implications and ensure that all relevant compliance requirements are met. Accountants can provide insights into:

  1. Tax Liability: An accountant can help determine the potential tax liability arising from the BIK on company cars, ensuring that employees are aware of any additional tax they might incur.
  2. Accurate Filing of P11D Forms: Accountants assist in accurately completing and filing P11D forms, which is crucial for maintaining compliance with HMRC requirements and avoiding penalties.
  3. Evaluating Class 1A Contributions: By accurately assessing the BIK values, accountants can help employers calculate the Class 1A National Insurance contributions they would be required to pay.
  4. Optimization of Tax: Accountants can provide advice on how to optimize tax positions by exploring available allowances, reliefs, and exemptions related to company cars.
  5. Strategic Decision-Making: Based on the assessment of tax implications, accountants can guide businesses and employees in making informed decisions on whether acquiring a company car is a financially prudent move.


While company cars are an attractive perk, diving into this benefit without understanding the intricate tax implications and compliance requirements can lead to financial pitfalls. The complexities surrounding BIK values, P11D forms, and Class 1A National Insurance contributions emphasize the importance of professional guidance.

By consulting an accountant before acquiring a company car, businesses and employees can navigate the tax landscape more effectively, ensuring they are well-informed about their obligations and are making strategically sound decisions. Thus, professional financial advice acts as a beacon, illuminating the path of tax compliance and financial prudence in the world of company cars.