Tax Planning for High-Earning Company Directors
The same £45,000 car can save a company £11,925 in Corporation Tax in its first year, or just £715.50. The difference isn't the price, the brand or the director's negotiating skills. It is what comes out of the exhaust.
That one fact explains why the question "should my company buy a car?" has no simple answer. For a few directors, in a few circumstances, it is an excellent decision. For many others, it is an expensive way to feel clever.
I get asked about cars more than almost any other purchase. Directors across Tunbridge Wells, Tonbridge, Sevenoaks and Maidstone tell me the same thing: "My accountant friend said I should put it through the company." Perhaps. But the right answer depends on the type of car, the size of your profit, how much you drive for business, and how long you plan to keep it.
This guide sets out the three realistic options: a company-owned car, a personal car with mileage claims, and an electric vehicle. It then looks at the tax consequences for the company and for you. I have used the rules in force for 2026–27, and I've flagged one date that matters a great deal: 31 March 2027.
Before we get into the detail, here is the landscape. A director who needs a car for work has three broad choices.
Each route involves a different mix of tax relief, cost and paperwork. None is right for everyone. The skill is in matching the route to your situation.
When a limited company buys a car, the car belongs to the company. It appears in the accounts as an asset, and the company pays for it, insures it and maintains it.
The company can usually claim two things.
Notice what the company doesn't get. Cars are excluded from the Annual Investment Allowance, which gives 100% relief on up to £1 million of other equipment. A car is not treated like a laptop or a drill.
If you can use the car privately, even occasionally, HMRC treats this as a taxable benefit. You pay income tax on a percentage of the car's list price, and the company pays Class 1A National Insurance of 15% on the same figure. Where the company also pays for your private fuel in a petrol or diesel car, there is a separate fuel benefit too.
HMRC doesn't easily accept that a director's car has no private use. A director who has a car available at home, with the keys in the house, is generally treated as having private use. The "pool car" exemption exists, but its conditions are strict and rarely suit a single-director company.
A company-owned car tends to work best when:
It works poorly for a high-emission car, a director with a low tax bill, or a company with irregular profits.
Some companies lease rather than buy. A lease spreads the cost, and the rentals are generally deductible. But there are two traps. First, where the car's emissions exceed 50g/km, 15% of the lease rental is disallowed for Corporation Tax. Second, VAT on a lease is normally only 50% recoverable if there is any private use. An electric car lease avoids the 15% restriction, which is one reason leasing has become popular with electric drivers.
Where a VAT-registered company buys a car that may be used privately, it normally can't reclaim the VAT on the purchase price. There are narrow exceptions, such as taxis or driving school cars. This is a real cost that is easy to forget when the price looks reasonable.
I remember a Tunbridge Wells consultant who had planned to buy a £48,000 SUV through his company. By the time we had worked through the lost VAT, the high benefit-in-kind charge and the small first-year allowance, the company-owned route had a much weaker case than he expected. He ended up choosing a different car and a different structure, and he told me he was relieved we had checked first!
The alternative is to keep the car out of the company altogether. You buy it, insure it and run it yourself. The company then pays you for business journeys at the approved mileage rate.
From 6 April 2026, the approved rates are:
These payments are tax-free for you and don't attract National Insurance. The company deducts them as an expense. You need a log of each journey, showing the date, the destination, the purpose and the miles driven.
The personal route has real advantages.
For a director doing a modest amount of business driving, it's often the cheapest and neatest approach.
The drawbacks are just as clear.
A Sevenoaks consultant I advise drives about 8,000 business miles a year to see clients across Kent and Sussex. The company pays her £4,400 in mileage, tax-free. That's a deduction for the company, no benefit-in-kind for her, and no capital tied up in a company car. For her, it was an easy choice.
If your business mileage is under about 8,000 to 10,000 miles a year, and your car is modest, the mileage route often wins. If your business mileage is very high, or the car is electric, the company route deserves a proper look.
Electric cars are where the tax system is most generous, and also where the rules are changing fastest. I've set out what applies today and what is coming.
A company that buys a new zero-emission car can claim the whole cost against profit in the year of purchase. This is the 100% first-year allowance. It has been extended, and at the time of writing it applies to expenditure incurred up to 31 March 2027 for Corporation Tax. Chargepoints qualify too.
After that date, unless the government extends it again, a new electric car would fall back into the normal main pool, where the writing-down allowance is 14% from 1 April 2026. The Autumn Budget is due on 28 October 2026, so this could change. If you're planning to buy an electric car through the company, check the position before you order.
Compare the rates for different cars.
Spread over many years, the small percentages give very slow relief. That is why the first-year allowance is such a prize.
For a director who drives the electric car privately, the taxable benefit is a percentage of the list price. The rates for zero-emission cars are set in law.
By contrast, the highest rate for petrol and diesel cars in 2026–27 is 37%. That's more than nine times higher than the electric rate. On a £45,000 car, the electric benefit is £1,800 and the high-emission benefit is £16,650.
Electricity used to charge the car doesn't create a fuel benefit, so there is no separate charge for it.
Charging at the company's premises is generally free of tax. If you charge at home, the company can reimburse the electricity used for business journeys. HMRC publishes an advisory electricity rate per mile that can help, though it is safer to keep records of your actual usage. Installing a chargepoint at home for a company car is a topic where the detail matters, so take advice first.
Electric cars are not a free lunch. Four points deserve attention.
I met a Tonbridge electrician who bought an electric van through his company because he'd heard it was "free". It wasn't free. It was well-timed relief on a purchase he needed anyway, and that's a very different thing. He understood this clearly, and he was right to proceed.
If your business needs a vehicle to carry tools and equipment, a van may suit you better than a car. Vans are taxed differently. For 2026–27, the benefit for private use of a company van is a flat £4,170 a year, with a further £798 if the company pays for private fuel. That is far lower than the benefit on most cars.
But HMRC has detailed rules on what counts as a van, particularly for double-cab pickups. Don't assume. Check the vehicle's classification before you buy.
Now let's pull the tax consequences together, first for the company and then for you.
For the company, a car involves four tax questions.
1. What relief does it get on the purchase?
This is decided by emissions. A new zero-emission car qualifies for 100% in the first year, up to 31 March 2027. A car with emissions up to 50g/km goes into the main pool at 14%. A higher-emission car goes into the special rate pool at 6%. The allowance is given to the company regardless of the director's private use. The private use is dealt with through the benefit-in-kind charge instead.
2. What running costs can it claim?
Fuel, electricity for business use, insurance, servicing and so on are deductible. If a lease is involved, the rentals are deductible subject to the 15% restriction for cars above 50g/km.
3. What extra tax does it pay?
Class 1A National Insurance at 15% on the benefit-in-kind figure. For an electric car with a 4% benefit on £45,000, that is £270. For a high-emission car at 37%, it's £2,497.50. This cost is itself deductible against profits.
4. What happens when it sells the car?
Sale proceeds are set against the allowances claimed. If you claimed 100% and sell for £28,000, that £28,000 is taxable as a balancing charge. The tax has not disappeared. It has been postponed.
There is a fifth point worth making. Tax relief reduces the cost of a car. It doesn't remove it. A company that spends £45,000 and saves £11,925 in tax still has £33,075 less cash. If the car isn't needed, nobody wins.
For you, the main charge is the benefit in kind. The calculation is:
List price × the appropriate percentage × your income tax rate.
Take our £45,000 electric car. In 2026–27, the benefit is £1,800. A basic rate taxpayer pays £360 a year on it. A higher rate taxpayer pays £720. In 2027–28, with the percentage at 5%, the benefit is £2,250, and the higher rate tax is £900.
Now take a high-emission car of the same price in the top band. The benefit is £16,650. For a higher rate taxpayer the tax is £6,660 a year. If the company also pays for private fuel, the fuel benefit applies on top of that, calculated on a figure of £29,200 for 2026–27.
You also need to report the benefit. The company submits a P11D to HMRC after the end of the tax year, and the Class 1A National Insurance is paid by the company shortly afterwards. These duties can be missed when a car is bought through the company by someone who has never had a company car before.
Finally, remember that the benefit-in-kind figure sits alongside your other income. It can push you into a higher tax band, and it can reduce your personal allowance if your total income is high enough.
Let's see how this works in practice. A Tunbridge Wells company has a 31 March 2027 year-end and a forecast taxable profit of £110,000. At that level, Corporation Tax is £25,400. The director, a higher rate taxpayer, needs a car costing £45,000 and expects to drive 8,000 business miles a year.
The company claims the 100% first-year allowance before 31 March 2027. I have treated the £45,000 as the full cost, including VAT that can't be recovered. Taxable profit falls from £110,000 to £65,000. Corporation Tax falls from £25,400 to £13,475, a saving of £11,925.
The director pays tax on a benefit of £1,800, which is £720 in the first year. The company pays Class 1A of £270. After the Corporation Tax relief on that, it costs about £198.
The company is £45,000 lighter in cash, however, and any later sale of the car will be taxable up to what was claimed.
Suppose the car falls into the special rate pool at 6%. The first-year deduction is £2,700, and the Corporation Tax saving is £715.50.
The benefit is £16,650, so the director's tax is £6,660 a year at the higher rate. The company's Class 1A is £2,497.50. The VAT on the purchase can't be recovered either.
Compared with Route 1, the company gets a tiny fraction of the relief and the director pays almost ten times as much tax. It is hard to build a good case for this route.
The company pays 55p for 8,000 business miles, which is £4,400, tax-free to the director. The company deducts it, saving about £1,166 of Corporation Tax. There is no benefit in kind, no Class 1A and no VAT problem.
The director bears the cost of owning the car, including depreciation. But there is no tax charge on it, and no tax to repay if the car is sold at a loss.
Route 1 is clearly the best of the company options. It beats Route 2 by a wide margin. Whether it beats Route 3 depends on whether the director would buy the car anyway, how much cash the company can spare, and how long the car will be kept. In my experience, Route 1 suits a director with a strong profit year, a real need for the car, a zero-emission vehicle and a purchase before 31 March 2027. Route 3 suits many directors with moderate mileage. Route 2 rarely suits anyone.
Quick answer: It depends mainly on the car's emissions. A zero-emission car bought by the company before 31 March 2027 qualifies for a 100% first-year allowance and a low benefit-in-kind rate of 4% in 2026–27, so it can be very tax-efficient. A high-emission car gets slow relief and a heavy benefit-in-kind charge, so it is often better to own it personally and claim mileage at 55p a mile.
What this means for a company director: The company gets the relief, but you pay the tax on private use. You need to weigh both sides together. A big saving for the company can be cancelled out by a large personal tax bill, and a car you don't need isn't made free by relief.
Example: A company with £110,000 of profit buys a £45,000 electric car and saves £11,925 of Corporation Tax in the first year. The director pays about £720 of tax on a £1,800 benefit, and the company pays £270 of Class 1A. A similar petrol car with high emissions saves the company only £715.50 and costs the director £6,660 a year in tax.
Common mistakes: Buying a car just to save tax. Ignoring the benefit-in-kind charge. Forgetting that VAT on a car is usually not recoverable. Assuming 100% relief means the car is free. Not keeping a mileage log. Missing the 31 March 2027 date.
When should you speak to an accountant? Before you order the car, not after. Ideally before you choose between buying, leasing and using your own car, and well before the date the allowance may end.
These are the errors I see most often with company cars.
A car should earn its place by being needed. Tax relief makes a necessary purchase cheaper. It doesn't make an unnecessary one worthwhile.
A company that gets a good deduction can leave the director with a bill that cancels it. Always calculate both sides.
HMRC doesn't readily accept this for a director. If the car is available to you at home, assume there is private use unless you can clearly show otherwise.
If you claim 100% allowances and later sell, the proceeds are taxable. Think about how long you plan to keep the car.
A mileage claim needs a record of each journey. Create it as you go, with the date, destination, purpose and miles.
The 100% allowance is currently due to end on 31 March 2027. Ordering a car in February and taking delivery in May may not help, because the relief depends on when the expenditure is treated as incurred. Plan the timing early, and ask us what that means for your order.
Rates and allowances change. The benefit-in-kind percentages and the first-year allowance are both subject to government decisions. What I've written is accurate for October 2026, ahead of the Autumn Budget on 28 October. Check the position again before you buy.
Before you decide, ask yourself these questions.
If you can answer these, the right route usually becomes clear.
If you are thinking of buying, leasing or changing a car, speak to us first. At Peter Hodgson & Co, we work with sole traders, contractors and company directors across Tunbridge Wells, Tonbridge, Sevenoaks and the rest of Kent and the South East. We can compare your options using your own figures, so you can see what each route would cost before you commit.
To arrange a conversation, you can complete the "Contact Us" form on our website, call us on 01892 515 733, or send us an email at info@peterhodgson.co.uk. We would be glad to help!
Disclaimer:
The content of this blog is for general informational purposes only and should not be considered professional tax advice. The information is correct at the time of publishing but may change following future UK budget announcements or updates to HMRC guidance. Individual circumstances vary, and tax obligations can differ based on your personal situation. We strongly recommend consulting with us or a qualified tax professional to receive advice tailored to your specific needs.
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