HMRC advisory fuel rates calculator

Work out a company car fuel payment

For company cars only. If staff drive their own car, use HMRC's approved mileage rate instead: 55p a mile for the first 10,000 business miles in the tax year from 6 April 2026 (45p before), then 25p.

When the miles were driven

Business miles

Fuel

Engine size

Advisory fuel rate (company car): 16p a mile
Tax-free payment: £160.00
Carbon for your report: 277.0 kg CO2e

Rates from 1 September 2026. Carbon uses the 2026 government factor of 0.277 kg CO2e a mile for a medium car on diesel. In a company car it's Scope 1 (Scope 2 for the electricity). The pence a mile has no effect on the carbon, which comes only from the miles and the car's size and fuel.

Contains public sector information licensed under the Open Government Licence v3.0. Sources: HMRC, Advisory fuel rates; HMRC, Travel: mileage and fuel rates and allowances; DESNZ, greenhouse gas reporting conversion factors. Not tax advice.