Tax Guide for Driving Instructors: ADI Expenses and Tax

The Accounted Business Team·6 February 2026·6 min read

Being a self-employed driving instructor means your car is your office, your classroom, and your biggest expense. Getting the tax side right can save you thousands of pounds a year. This guide covers everything Approved Driving Instructors (ADIs) need to know about tax for the 2025/26 tax year.

Employed vs Self-Employed: Know Your Status

Most driving instructors are self-employed, but not all. If you work for a driving school, your status depends on the arrangement:

You are likely self-employed if you:

Pay a franchise fee to use the school's brand and car
Set your own hours and prices
Choose which pupils to take on
Can work for other schools or take private pupils

You are likely employed if:

The school sets your hours, prices, and pupils
You cannot work for anyone else
The school controls how you teach

If you are employed, your employer handles your tax through PAYE. This guide is for the self-employed majority.

The Big Question: Leasing vs Buying Your Dual-Control Car

Your car is your largest expense and the decision between leasing and buying has significant tax implications.

Leasing (including franchise arrangements)

If you lease your dual-control car, or pay a franchise fee to a driving school that includes the car, the full cost of the lease or franchise fee is deductible as a business expense. This is straightforward.

However, if you also use the car for personal journeys, you must reduce the deduction by the personal use proportion. If 20% of your mileage is personal, you can only claim 80% of the lease cost.

Most instructors keep the car almost exclusively for business, especially if they have a second personal car. If the dual-control car is genuinely only used for lessons and related business travel, you can claim 100%.

Buying the car

If you buy your car outright or on finance, you claim the cost through capital allowances rather than deducting it as an expense.

For the 2025/26 tax year, the Annual Investment Allowance (AIA) lets you deduct the full cost of a car up to £1,000,000 if it is used exclusively for business. But here is the catch — cars are treated differently from other equipment. Private cars (including dual-control cars used partly for personal travel) do not qualify for the AIA.

Instead, you claim a Writing Down Allowance:

18% per year for cars with CO2 emissions of 50g/km or less
6% per year for cars with higher emissions

If the car is used partly for personal travel, you reduce the allowance by the personal use percentage.

For electric or low-emission dual-control cars, the first-year allowance lets you deduct 100% of the cost in the year of purchase, provided business use is 100%.

Which is better?

Leasing usually gives you a bigger tax deduction upfront because the full lease cost is deductible each year. Buying spreads the tax relief over many years through writing down allowances. For most instructors, leasing or a franchise arrangement is simpler and more tax-efficient.

Fuel Costs: The Tricky Bit

Fuel is one of the most complex areas for driving instructors because your pupils use your fuel during lessons and your car gets significantly worse fuel economy during instruction (all that stopping, starting, and crawling in first gear).

If you lease or use actual costs

Track your total fuel spend and total mileage for the year. Then work out the percentage that is business miles versus personal miles. Claim that percentage of your total fuel cost.

For example: You spend £4,000 on fuel. You drive 25,000 miles total, of which 20,000 are business miles (lessons, travel to pick up pupils, trips to test centres). Your business percentage is 80%, so you claim £3,200.

If you use simplified mileage rates

You can instead use HMRC's flat mileage rates:

45p per mile for the first 10,000 business miles
25p per mile after that

Using the example above: 10,000 miles at 45p (£4,500) plus 10,000 miles at 25p (£2,500) gives you £7,000 in deductions. This is often significantly more generous than actual costs, which is why many driving instructors prefer it.

Important: If you claim mileage rates, you cannot also claim for fuel, insurance, servicing, or any other running cost separately. The mileage rate covers everything. And if you have already claimed capital allowances on the car, you cannot switch to mileage rates for that car.

Keep a mileage log

Whichever method you use, keep a record of your business miles. Note the date, pupil name or purpose of journey, start and end mileage or miles driven. Without this log, HMRC can reject the entire claim.

Other Deductible Expenses

ADI badge and registration

Your ADI badge costs £300 for a four-year registration (as of 2025/26). This is a business expense, and you can either claim the full amount in the year you pay it or spread it over the four years. Most people claim it in the year of payment for simplicity.

The ADI Part 1, Part 2, and Part 3 test fees are also deductible if you are already trading. If you paid for your qualification before starting your business, those costs cannot be claimed — they are pre-trading expenses only if incurred within seven years of starting the business and would have been deductible if you were already trading. In practice, ADI qualification costs usually do qualify.

Standards Check preparation

If you pay for coaching or training to prepare for your Standards Check, that cost is deductible as professional development.

Insurance

You need specialist driving instructor insurance, which is significantly more expensive than standard car insurance because your pupils are learners. The full premium is deductible (reduced for any personal use proportion).

Dual controls

If you pay separately for dual control fitting, maintenance, or removal, these costs are deductible.

Test centre parking

Parking at test centres when taking pupils for their test is a business expense. Keep the tickets or payment receipts.

Training and CPD

Any courses you take to improve your instructing skills are deductible. This includes:

Instructor training courses
Fleet trainer qualifications
First aid courses
Safeguarding training

Professional memberships

Fees for organisations like the Driving Instructors Association (DIA) or the Approved Driving Instructors National Joint Council (ADINJC) are deductible.

Phone

The business portion of your mobile phone bill is deductible. You use your phone to book lessons, communicate with pupils, and navigate — a significant chunk of your usage is business-related.

Stationery and teaching materials

Lesson planning materials, progress cards, show-me-tell-me aids, and any other teaching resources count as business expenses.

Working Out Your Tax

Your calculation follows this pattern:

Add up all lesson fees and other business income
Subtract your allowable expenses
The result is your taxable profit

You then apply the Personal Allowance (£12,570 tax-free) and pay:

20% on profits from £12,571 to £50,270
40% from £50,271 to £125,140
45% above £125,140

Plus National Insurance:

Class 2: £3.45 per week (if profits exceed £12,570)
Class 4: 6% on profits between £12,570 and £50,270, then 2% above

Record Keeping Tips for Driving Instructors

Your records need to include:

A diary or log of all lessons given, with dates, pupils, and fees
Mileage log with business and personal miles
All expense receipts
Bank statements showing income and outgoings

Keeping on top of this weekly saves enormous stress at year-end. Accounted is designed for exactly this kind of record keeping — Penny, the AI bookkeeper, can match your bank transactions to your lesson diary and categorise your fuel and running costs automatically. That means less time on paperwork and more time on the road.

Start Your Free Trial With Accounted

Tax for driving instructors does not have to be complicated. Accounted handles the bookkeeping so you can focus on getting your pupils through their test. Start your free trial today and see how much time you save.

More on Industry Guides

Industry Guides