The advisory fuel rates are issued by HMRC from time to time. These are rates published as guidelines by the government of UK and used by employers for reimbursing employees who travel in a company owned car for official or business purpose. An employee is not supposed to claim expenses on personal trips. The rates are strictly for expenses incurred on business trips in a company car.
- An employer reimburses its employees for business trip company owned cars
- An employee needs to pay back the expense of fuel utilized for personal travel

Current Advisory Fuel Rates (AFR) to be effective from 1 March, 2020
Engine Size | Petrol - amount per mile | LPG - amount per mile |
1400 cc or less | 12 pence | 8 pence |
1401 cc to 2000 cc | 14 pence | 10 pence |
Over 2000 cc | 20 pence | 14 pence |
Engine Size | Diesel - amount per mile |
1600 cc or less | 9 pence |
1601cc to 2000cc | 11 pence |
Over 2000cc | 13 pence |
Here, it is pertinent to mention that if the company car is electric, Advisory Electric Rate (AER) will be 4 pence per mile.
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In case of hybrid cars, separate AER rate is not applicable. Hybrid cars are considered either in the category of petrol or diesel cars. Previous rates can be applied for a month after new rates have become effective.
Methodology of calculating fuel rates
The AFRs issued by HMRC are directly linked to current fuel prices in the market. Hence, the rates are as accurate as possible. Additional parameters that can impact fuel efficiency and hence, fuel cost like quality of road, factors related to different seasons, fuel efficiency of vehicles are also taken into consideration.
The HMRC AFRs are revised on every quarter so that the rates reflect the current market trends and other dynamic factors.
Benefits of using AFRs
The AFRs are structured as guiding principles to facilitate companies in following right processes for tax and National Insurance (Class 1A) costs. If an employer reimburses at the rate that is same or lower than advisory fuel rates, it is presumed by HMRC that there is no taxable gain or any Insurance cost to be paid.
There may be scenarios where companies may be better off setting their own fuel rates. This may be applicable incase the company is using highly fuel efficient cars or overall fuel cost on company cars is higher than what HMRC envisages.
Employer paying rates higher than AFRs
Company car fuel rate more than HMRC’s advisory rates can be applicable in cases where actual cost of fuel per mile is more in a company’s cars. However, if the same is not true, it would effectively mean that the company is reimbursing fuel costs to its employees even for purposes other than business purpose. A company reimbursing its employees for personal trips needs to pay an additional charge called fuel benefit charge. This is a tax that is applicable to companies paying its employees for personal travel.
In a nutshell, if a company is reimbursing more than its actual business expenses, the additional amount that is being paid is considered taxable gain for Class 1A Insurance purposes.
Employer paying rates lower than AFRs
If an employer pays rates lower than HMRC’s advisory rates, the employee is entitled to claim the shortfall amount from HMRC at the end of financial year. This is covered under Mileage Allowance Relief.
Employee claims reimbursement for personal trips
In cases where an employee is using a company owned car whole time for business as well as personal travel and the company is reimbursing all expenses, the employee is expected to pay back all the reimbursements against personal trips. If not so, the reimbursements on personal trips have to be reported to HMRC and subsequently, the employer needs to pay fuel benefit tax on the payments made for personal travel.
Self employed individuals
For self-employed individuals, the concept of company owned cars do not apply since there is no separate company that can exist apart from the individual. Hence, Advisory Fuel Rates issued by HMRC are not applicable for self employed people.
Instances where employee uses private car for business purpose
There may be instances where an employee finds it more convenient to use own car than to use a company owned car. In such cases, the employee can claim mileage allowances for personal car. However, specific conditions need to be complied with to be eligible for mileage allowances.
An eagle’s eye view of how AFRs are calculated
Petrol
Engine size (cc) | Mean MPG | Applied MPG | Fuel price (per litre) | Fuel price (per gallon) | Pence per mile | AFR |
---|---|---|---|---|---|---|
Up to 1400 | 57.0 | 48.5 | 123.8 | 562.8 | 11.6 | 12 |
1401 to 2000 | 47.6 | 40.5 | 123.8 | 562.8 | 13.9 | 14 |
Over 2000 | 32.7 | 27.8 | 123.8 | 562.8 | 20.3 | 20 |
LPG
Engine size (cc) | Mean MPG | Applied MPG | Fuel price (per litre) | Fuel price (per gallon) | Pence per mile | AFR |
---|---|---|---|---|---|---|
Up to 1400 | 45.6 | 38.8 | 68.5 | 311.4 | 8.0 | 8 |
1401 to 2000 | 38.1 | 32.4 | 68.5 | 311.4 | 9.6 | 10 |
Over 2000 | 26.2 | 22.2 | 68.5 | 311.4 | 14.0 | 14 |
Diesel
Engine size (cc) | Mean MPG | Applied MPG | Fuel price (per litre) | Fuel price (per gallon) | Pence per mile | AFR |
---|---|---|---|---|---|---|
Up to 1600 | 73.6 | 62.6 | 128.2 | 582.8 | 9.3 | 9 |
1601 to 2000 | 63.5 | 54.0 | 128.2 | 582.8 | 10.8 | 11 |
Over 2000 | 51.0 | 43.4 | 128.2 | 582.8 | 13.4 | 13 |
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