In reality, there’s no rule that forbids a company from buying a supercar.
The issue is simply that it’s seen as “not necessary for business” and almost always carries a personal-use element. So it triggers quite a few consequences.
I’m not exactly a car expert, but let’s take a £450,000 Lamborghini Revuelto as an example and look at what actually happens.
The upsides
You don’t need to use your personal money to buy the car.
The car is owned by the company, recorded as an asset, and can be claimed under capital allowances.
Running costs like repairs, insurance, servicing and so on can all go through the company.
The downsides
Slow capital allowance
The Revuelto is a plug-in hybrid but still emits more than 300 g/km of CO₂. That’s extremely high, which means it only qualifies for a 6% capital allowance.
• £450,000 × 6% = £27,000
• With Corporation Tax at 25% → the maximum annual tax saving is only £27,000 × 25% = £6,750
The allowance is painfully slow, and the tax benefit is almost negligible.
Benefit in Kind (BIK) tax
With such high emissions, the BIK rate hits the maximum 37%.
P11D value: £450,000
Taxable Benefit: £450,000 × 37% = £166,500 per year
Which means the personal tax bill each year would be roughly:
• Basic rate (20%): £33,300
• Higher rate (40%): £66,600
• Additional rate (45%): £74,925
And the company must also pay Class 1A NIC:
£166,500 × 15% = £24,975 per year
In short, it’s not illegal, just inefficient. What looks like a company purchase quickly becomes a very expensive personal benefit.