Is Car Allowance Taxable? Yes. If your employer gives you a fixed cash car allowance, it’s generally treated as earnings and taxed through PAYE. National Insurance also normally needs to be considered. That is different from a payment for qualifying business miles driven in your own car, which may be paid free of income tax up to HMRC’s approved amount. A company car is different again: private use is generally taxed under the benefit-in-kind rules.
What Is a Car Allowance?
A car allowance is usually a fixed sum paid with your salary to help with the cost of owning or running a vehicle. You might receive £400 a month, for example, regardless of whether you drive 100 or 1,000 business miles that month. You choose and maintain the car, while the employer pays the agreed cash amount.
Because that regular payment is cash earnings, it does not become tax-free because you spend it on insurance or fuel. Your employer could also reimburse qualifying business journeys separately. Those mileage payments have their own rules.
What Are the HMRC Mileage Rates for 2026/27?
For the tax year 6 April 2026 to 5 April 2027, HMRC’s Approved Mileage Allowance Payment (AMAP) rates for employees using their own vehicles for business journeys are:
| Vehicle | First 10,000 business miles | Business miles above 10,000 |
| Car or van | 55p per mile | 25p per mile |
| Motorcycle | 24p per mile | 24p per mile |
| Bicycle | 20p per mile | 20p per mile |
The first 10,000 car and van miles increased from 45p to 55p, effective 6 April 2026. The 25p rate for later miles did not change. These are tax-approved benchmarks, not a requirement that every employer pay these amounts. HMRC calculates the approved amount across the employee’s qualifying business miles for the tax year, even if they use more than one car.
An employer can also pay 5p per passenger per business mile when an employee carries a fellow employee in a car or van on a journey that is a business journey for that passenger too. This is a separate passenger payment, subject to HMRC’s conditions. There is no tax relief for a passenger payment the employer does not make.
Car Allowance, Mileage Reimbursement or Company Car: What’s the Difference?
| Arrangement | What you receive | General tax treatment |
| Cash car allowance | A fixed cash payment through employment | Generally taxable earnings through PAYE |
| Own car and business mileage | Payment linked to qualifying business journeys | Can be paid without income tax up to HMRC’s approved amount |
| Company car | An employer-provided car available for private use | Taxable company-car benefit, calculated under benefit-in-kind rules |
| Company car with private fuel | Employer-funded fuel for personal journeys | A separate fuel benefit tax charge may apply |
A car allowance can work alongside mileage reimbursement. The allowance is still taxable even if you drive extensively for work; the business miles are assessed separately.
Ordinary commuting between home and a permanent workplace does not generally count as qualifying business travel, although the rules can differ for a temporary workplace.
What If Your Employer Pays Less Than 55p per Mile?
You may be able to claim Mileage Allowance Relief (MAR) on the difference between the approved amount for your qualifying business miles and the mileage payments you received. This is tax relief on the difference, not a refund of the whole shortfall from HMRC.
For example, suppose you drive 8,000 qualifying business miles in your own car during 2026/27 and your employer pays 45p per mile:
- Employer’s mileage payment: 8,000 × 45p = £3,600
- HMRC approved amount: 8,000 × 55p = £4,400
- Potential amount on which to claim tax relief: £800
Keep in mind that these figures concern mileage payments, not a fixed cash car allowance. There is no equivalent Mileage Allowance Relief for National Insurance.
What If Your Employer Pays More Than the HMRC Rate?
The approved amount is a ceiling for tax-free qualifying mileage payments, calculated over the relevant business miles for the tax year. If mileage payments exceed that amount, the excess has tax and reporting implications; the whole reimbursement does not suddenly become taxable.
For instance, if you drive 8,000 qualifying car miles and receive 60p per mile, the employer pays £4,800. The approved amount is £4,400, leaving £400 above the approved amount for income-tax treatment. National Insurance uses a separate calculation by earnings period, so employers should check HMRC’s NI rules for motoring payments.
Three Practical 2026/27 Examples
A monthly allowance plus mileage
You receive a £400 monthly car allowance (£4,800 a year) and separately claim for qualifying journeys in your own car. The £4,800 is generally taxable cash earnings. The mileage payments are assessed against the AMAP approved amount on their own terms; the allowance does not convert into tax-free mileage merely because you drive for work.
The employer still pays 45p
You drive 8,000 qualifying car miles and receive £3,600 in mileage payments. The approved amount is £4,400, so you may be eligible for tax relief on the £800 difference, subject to HMRC’s rules.
You pass 10,000 miles
You drive 12,000 qualifying car miles during 2026/27. The approved amount for income tax is 10,000 × 55p + 2,000 × 25p = £6,000. The lower rate applies to the 2,000 miles above the threshold, even though the first 10,000 miles qualify at 55p. National Insurance mileage thresholds are calculated differently.
Does a Car Allowance Go on a P11D?
A regular cash car allowance is normally handled as pay through payroll and PAYE; it is not reported as a company-car benefit on a P11D. Mileage payments within the approved amount require no income-tax report to HMRC.
Tax codes play a significant role in this process. They determine how much tax should be deducted from an employee’s earnings, including their car allowance. Keeping up to date with tax codes is essential, as they reflect personal circumstances like tax-free allowance or additional taxable income. Properly managing tax codes ensures that employees are taxed appropriately on their car allowance.
Where payments exceed the approved amount, employers need to follow HMRC’s reporting and tax instructions, including the relevant P11D and payroll treatment.
An employer-provided car available for private use is a benefit in kind. In 2026/27, employers can report eligible benefits on a P11D or through payroll if they had registered to payroll those benefits before 6 April 2026.
Payrolled benefits generally do not also need a P11D for that employee, although employers must still deal with applicable Class 1A National Insurance and P11D(b) requirements.
HMRC’s payrolling guidance explains the current process. The government has announced further changes to mandatory benefit payrolling from April 2027, so check the rules for the tax year you are reporting.
Is a Company Car Taxed in the Same Way?
No. If a company car is available to you or your family for private use, including commuting, you generally pay tax on the calculated value of that benefit. The calculation considers factors such as the car’s list price, CO₂ emissions and fuel type, along with any relevant employee contribution. Employer-funded private fuel can create a separate taxable benefit.
This means two offers that look similar on paper can affect take-home pay quite differently. If you’re comparing a cash allowance with a company car, ask for the allowance amount, the mileage reimbursement policy and the details needed to estimate any company-car benefit. Then compare the full cost of using the vehicle for work, not just the headline figure.
What Mileage Records Should You Keep?
Record each business journey as it happens: the date, start and end points, mileage and business purpose. Keep your employer’s mileage claims and payments too.
If you claim vehicle tax relief, HMRC says your mileage log must include the reason for every journey and the start and end postcodes. A calendar entry alone will not give you everything you need.
For employers, a clear policy that separates fixed cash allowances from reimbursed business journeys makes payroll and year-end reporting easier. For employees, it makes the payslip easier to understand and helps you spot whether you may be entitled to mileage tax relief.
Employer Considerations for Providing Car Allowances
Employers need to be aware of the tax implications when providing car allowances. Offering a car allowance increases an employee’s taxable income. This means additional responsibilities in terms of reporting and potential National Insurance Contributions (NICs) for the employer.
Developing a clear car allowance policy is essential. A well-documented policy helps employers set expectations and ensure compliance with tax laws. It can also serve as a reference for both current and potential employees. The policy should include details about the calculation of allowances and the responsibilities regarding vehicle choice.
Here are a few key considerations for employers:
- Understand tax obligations and comply with HMRC guidelines.
- Monitor and record business mileage accurately.
- Stay updated on changes in tax legislation.
The administrative burden of managing car allowances shouldn’t be underestimated. Employers should consider using technology and software solutions to automate tracking and reporting. This can streamline the process and reduce errors.
Consulting with a tax advisor is also recommended. They can provide valuable insights into effective car allowance management. This can help in minimising tax liabilities and ensuring adherence to complex tax laws. Investing time in planning and consultation can benefit both employer and employee.
Environmental and Technological Considerations
Car allowances can have significant environmental impacts. Employers should consider how vehicle types within allowance schemes affect CO₂ emissions. Encouraging the use of fuel-efficient cars can reduce environmental footprints. This can align with corporate sustainability goals and appeal to eco-conscious employees.
Technology plays a vital role in managing car allowances. Digital tools and apps help track business mileage accurately. They can simplify the process for both employers and employees by providing real-time data. This ensures precise mileage tracking and helps avoid potential discrepancies in mileage records.
The move to electric and hybrid vehicles is a trend gaining momentum. Employers might offer incentives for choosing greener cars within allowance schemes. This not only supports sustainability efforts but can also benefit employees through lower running costs.
Frequently Asked Questions
Is a car allowance taxable in the UK?
Yes. A fixed cash car allowance is generally treated as earnings and taxed through PAYE, and National Insurance normally needs to be considered too. Spending it on fuel or insurance does not make it tax-free.
What is the HMRC mileage rate for 2026/27?
For cars and vans, the approved rate is 55p per mile for the first 10,000 qualifying business miles and 25p per mile above that. The 55p rate replaced 45p from 6 April 2026.
Can I claim tax relief if my employer pays less than 55p per mile?
You may be able to claim Mileage Allowance Relief on the difference between the approved amount and the mileage payments you received. This is tax relief on the difference, not a refund of the whole shortfall, and there is no equivalent relief for National Insurance.
Does a car allowance go on a P11D?
A regular cash car allowance is normally handled through payroll and PAYE, not reported as a company-car benefit on a P11D. Mileage payments within the approved amount need no income-tax report to HMRC.
Is a company car taxed the same way as a car allowance?
No. A company car available for private use is a benefit in kind, taxed on a value that considers the car’s list price, CO₂ emissions and fuel type. Employer-funded private fuel can create a separate taxable benefit.
Does commuting count as business mileage?
Ordinary commuting between home and a permanent workplace does not generally count as qualifying business travel, although the rules can differ for a temporary workplace.
Conclusion and Best Practices
Understanding the taxability of car allowances is crucial for compliance and effective financial management. Car allowances are generally taxable, impacting both income tax and National Insurance Contributions. Keeping precise mileage records can help in aligning with HMRC guidelines.
Staying informed about tax legislation and industry trends is essential for both employers and employees. This includes regularly reviewing car allowance policies and consulting with tax professionals when necessary. By adopting these practices, organisations can optimise benefits while minimising tax burdens.
