Any business that puts fuel through cars which are also used privately faces a VAT problem: you reclaimed VAT on all the fuel, but some of that fuel was private. HMRC’s fuel scale charge is the standard answer - a fixed charge that settles the private-use VAT without mileage logs. For fleets running company cars it is usually the default, but it is a choice, and it is worth understanding what the choice involves.
The mechanics are simple. First, your business reclaims all the VAT on fuel for the car - every receipt, no apportionment. Second, you work out the fuel scale charge for that car. Third, you include that charge in the amount you owe on your VAT Return.
The charge itself comes from HMRC’s published tables and is driven by the car’s CO2 emissions figure - higher emissions, higher charge. To use the tables or HMRC’s online tool you need the CO2 figure, which is on the log book or available via the CO2 checker. Two special cases: for dual fuel cars, use the lower of the two figures; for cars registered before 1997 with no CO2 figure, the charge is based on engine size.
The charge applies per car, per VAT accounting period. A fleet with twenty company cars applies the charge twenty times, each at its own emissions-driven rate.
Picture a ten-car sales fleet where every car takes fuel on company cards and every driver also uses their car privately. At the end of the quarter the business has reclaimed VAT on all of it. Finance then looks up each car’s CO2 figure in the current HMRC table, reads off the quarterly scale charge for each, and adds the ten charges to the output VAT on the return. No driver logged a single journey; nobody apportioned a receipt. That is the entire transaction - which is why it is the default for mixed-use car fleets.
The fuel scale charge exists precisely so that you do not have to keep detailed mileage records. The alternative is to reclaim VAT only on the business proportion of fuel, evidenced by mileage logs showing business versus private use - genuine logs, kept continuously, car by car.
For most fleets the scale charge wins on administration alone. The question is arithmetic: if a car does very little private mileage, the fuel scale charge (a fixed cost reflecting assumed private use) may cost more VAT than simply not reclaiming, or than mileage-based apportionment. There is also a middle option worth knowing: if you do not reclaim any VAT on fuel for a car, no fuel scale charge is due for it - which can be the right answer for cars with trivial business fuel use. Whichever route, consistency matters: you cannot switch methods per receipt to optimise each tank.
Electric cars deserve a word of their own, because more fleets now mix them with petrol and diesel. The fuel scale charge is built around road fuel bought at pumps; charging an EV is treated differently, and the VAT position on business and private charging follows its own guidance rather than the scale charge tables. If your fleet is transitioning, treat each fuel type under its own rules instead of forcing EVs into the old mechanism.
The fuel scale charge is an accountant’s mechanism, but its inputs are fleet data: which cars exist, which have private use, their CO2 figures, and whether any car’s pattern makes mileage-based apportionment worth the admin. Once a year, run the comparison on your highest-mileage and lowest-private-use cars and hand the answer to finance with the fleet list attached. That is the whole job - and it keeps the VAT position defensible if HMRC ever asks why twenty cars all carry the charge and two do not.