Can Sole Traders Claim Tax Back on an Electric Car?

Yes, sole traders can claim significant tax relief on an electric car. The main routes are capital allowances (if you buy the vehicle) or mileage rate deductions (if you prefer simpler record-keeping). A brand new zero-emission electric car purchased outright qualifies for a 100% First Year Allowance (FYA), meaning you can deduct the full purchase cost from your taxable profits in the year you buy it. If the vehicle is also used for private journeys, the allowable amount is reduced proportionally. The 100% FYA has been extended to 5 April 2027 for income tax purposes.

The two methods: capital allowances or mileage rates

HMRC gives sole traders a choice. You pick one method and stick with it for that vehicle.

Method 1: Capital allowances

If you purchase an electric car (rather than lease it), you claim capital allowances. For new zero-emission cars, the 100% First Year Allowance lets you write off the full cost in year one, subject to business use percentage.

Example: You buy a new Volkswagen ID.3 for £34,000. You use it 70% for business and 30% for personal journeys. Your allowable deduction in year one is £34,000 × 70% = £23,800. If you pay income tax at 20%, that saves you £4,760 in tax. At 40%, the saving is £9,520.

If you lease the car rather than buy it, you cannot claim capital allowances. Instead, you can deduct the lease rental payments as a business expense (again, adjusted for private use). There is no restriction on the deductibility of lease payments for zero-emission cars.

Method 2: Simplified mileage rates (HMRC mileage allowance)

Instead of capital allowances, you can claim a flat-rate mileage deduction for every business mile driven. HMRC’s approved mileage rates for 2026/27 are:

Vehicle type	First 10,000 miles	Over 10,000 miles
Car (any type, including EV)	45p per mile	25p per mile
Motorcycle	24p per mile	24p per mile

So if you drive 12,000 business miles in a year, you claim: (10,000 × 45p) + (2,000 × 25p) = £4,500 + £500 = £5,000.

You cannot combine methods: if you use mileage rates, you cannot also claim capital allowances on the same vehicle. Once you have chosen mileage rates for a vehicle, you must use them for the life of that vehicle.

Which method is better for an EV?

For most sole traders buying a new electric car, the 100% First Year Allowance is more valuable in the short term because it generates a larger upfront tax deduction. The mileage rate of 45p per mile was set when electric cars were less common and does not distinguish between fuel types. For an EV with low running costs (perhaps 2–4p per mile in electricity), the 45p flat rate often overstates actual costs, meaning it may be slightly less generous than capital allowances on an expensive car, but it requires no calculation of business-to-private-use ratios.

A rough guide: if you drive under 10,000 business miles per year on a car costing under £20,000, the mileage rate is straightforward and often competitive. If you drive a more expensive EV or do high mileage, capital allowances on the purchase tend to give a bigger deduction.

What counts as business use?

HMRC takes a strict view. Business use means journeys you make wholly and exclusively for business purposes. This includes client visits, travelling between multiple work sites, and deliveries. It does not include commuting from home to a regular place of work. If you work from home and your home is your principal place of business, journeys from home to client sites can be classed as business use, but you should keep records.

Private use includes all personal journeys: the school run, supermarket trips, holidays. You must keep a mileage log to substantiate your business use percentage. HMRC may ask for it.

What if you lease an electric car rather than buy it?

If you lease, you cannot claim capital allowances. Instead, you deduct the lease rental payments as a business expense, reduced by the business use proportion. For a zero-emission car, there is no restriction on deductibility (for high-CO2 cars, only 85% of the rental is allowable). Maintenance and servicing costs under the lease are also deductible in proportion to business use.

Tax treatment summary for sole traders

Situation	Tax relief available
Buy a new zero-emission EV (2026)	100% First Year Allowance on full purchase price (× business use %)
Buy a used electric car	Writing Down Allowance at 18%/year on reducing balance (× business use %)
Lease a zero-emission EV	100% of lease rentals deductible (× business use %)
Use mileage rate instead	45p/mile first 10,000 miles, 25p/mile thereafter (business miles only)

Common mistakes sole traders make

Claiming 100% business use when the car is also used privately. HMRC treats implausible claims seriously. If you cannot demonstrate that the vehicle is genuinely never used for personal journeys, do not claim 100%. Even a small amount of private use requires you to restrict the claim.

Mixing capital allowances and mileage rates. You must choose one method per vehicle and stick to it. You cannot claim mileage rates and then switch to capital allowances later if the FYA looks more appealing.

Forgetting that the FYA applies only to outright purchase. If you take a hire purchase arrangement, check whether the agreement is treated as a purchase for tax purposes. Genuine HP agreements where ownership passes to you at the end do qualify for capital allowances, but operating leases do not.

Not keeping a mileage log. HMRC may challenge claims without records. A simple spreadsheet noting the date, destination, purpose and miles for each business journey is sufficient.

What should you do next?

The most tax-efficient approach for most sole traders in 2026 is to buy or finance a new zero-emission electric car and claim the 100% First Year Allowance in year one, keeping accurate records of business versus private mileage. If you drive fewer than 10,000 business miles per year, run the mileage rate calculation alongside the FYA figure to see which gives the larger deduction.

For context on how electric cars are treated in limited company and fleet arrangements, see our company cars and fleet guide. For the best models to consider, including running costs and range, see our best electric cars for salary sacrifice page.