Self-Employed Vehicle Expenses: A Complete Guide for Sole Traders (2026/27)

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If you use a car, van, motorcycle, or other vehicle to run your business, understanding what expenses you can claim is essential. Many sole traders miss out on valuable tax relief simply because they’re unsure which vehicle costs qualify as allowable business expenses.

In this guide, we’ll explain how self-employed vehicle expenses work, the different methods available for claiming tax relief, and how to ensure you stay compliant with HMRC rules during the 2026/27 tax year.

What Vehicle Expenses Can a Sole Trader Claim?

A sole trader can claim tax relief on vehicle expenses that are incurred wholly and exclusively for business purposes. Depending on the method chosen, you may claim:

Business mileage allowance
Fuel costs
Vehicle insurance
Repairs and maintenance
Vehicle servicing
Road tax
MOT costs
Vehicle leasing costs
Breakdown cover

However, personal journeys and commuting to your regular place of work are not allowable business expenses.

Understanding Business Use vs Personal Use

Before claiming any vehicle expenses, it’s important to understand HMRC’s distinction between business and personal use.

Business Use

Business use includes journeys such as:

Travelling to meet clients
Visiting suppliers
Driving between work locations
Attending business meetings
Travelling to temporary workplaces

Personal Use

Personal use includes:

School runs
Shopping trips
Holidays
Family visits
Commuting from home to your regular workplace

If your vehicle is used for both business and personal journeys, you can only claim the business proportion of the costs.

Example

If you drive 12,000 miles during the tax year and 4,800 miles are business-related, then 40% of your vehicle costs may be eligible for tax relief under the actual cost method.

Two Ways to Claim Self-Employed Vehicle Expenses

Sole traders generally have two options when claiming vehicle expenses:

Claim HMRC Mileage Allowance (Simplified Expenses)

The simplest method is to claim a fixed rate for each business mile travelled.

For the 2026/27 tax year, HMRC mileage rates are:

Vehicle Type	Rate
Cars and goods vehicles (first 10,000 miles)	55p per mile
Cars and goods vehicles (over 10,000 miles)	25p per mile
Motorcycles	24p per mile

Benefits of Using Mileage Allowance

Easier record keeping
No need to track fuel or maintenance costs
Suitable for most sole traders
Accepted by HMRC

Example

A sole trader drives 8,000 business miles during the tax year.

Calculation:

8,000 × 55p = £4,400

The trader can claim £4,400 as a business expense.

Claim Actual Vehicle Costs

Instead of using mileage rates, you can claim the actual business proportion of your vehicle expenses.

This method may result in a larger tax deduction if your vehicle is expensive to run.

Expenses That May Be Claimed

Fuel
Insurance
Repairs
Servicing
Tyres
Road tax
Breakdown cover
Vehicle finance interest
Leasing charges (subject to HMRC rules)

Example

Annual vehicle costs:

Fuel: £3,000
Insurance: £900
Repairs: £600
Road tax: £200

Total costs = £4,700

Business usage = 60%

Allowable expense:

£4,700 × 60% = £2,820

Record-Keeping Requirements

To support your claim, you should retain:

Fuel receipts
Repair invoices
Insurance documents
Mileage records
Vehicle maintenance records

Which Method Is Best for Sole Traders?

The best option depends on your circumstances.

Mileage Allowance May Be Better If:

Your vehicle is economical to run
You want simple bookkeeping
You drive a moderate number of business miles

Actual Costs May Be Better If:

You have high running costs
You drive a larger commercial vehicle
Your business mileage represents a significant portion of total use

Once you choose the mileage method for a vehicle, HMRC restrictions may apply when switching methods later, so professional advice is recommended.

Leasing a Vehicle as a Sole Trader

Many sole traders choose to lease a vehicle rather than purchase one outright.

Leasing can offer:

Lower upfront costs
Predictable monthly payments
Improved cash flow
Access to newer vehicles

Claiming Lease Costs

You can generally claim the business-use proportion of lease payments.

For example:

Annual lease payments: £4,800
Business use: 70%

Allowable expense:

£4,800 × 70% = £3,360

Important Note About Emissions

HMRC applies restrictions to some leased cars with higher CO₂ emissions. The amount you can claim may be reduced depending on the vehicle’s emissions profile.

This is one reason why electric and low-emission vehicles are becoming increasingly attractive for business owners.

Electric Vehicle Expenses for Sole Traders

Electric vehicles (EVs) continue to grow in popularity among UK businesses.

Potential advantages include:

Lower running costs
Reduced maintenance expenses
Lower emissions
Potential tax advantages

If you use an electric vehicle for business, you may claim either:

HMRC mileage allowance, or
The business proportion of actual running costs

As EV tax rules evolve, it’s worth reviewing your position annually with an accountant.

Hiring a Vehicle for Business Use

If you only require a vehicle occasionally, hiring one may be more cost-effective than owning or leasing.

Examples include:

Temporary contracts
Seasonal work
One-off projects
Short-term business travel

Provided the hire is wholly for business purposes, the rental costs are generally allowable business expenses.

Common Vehicle Expense Mistakes Sole Traders Should Avoid

Claiming Commuting Costs

Travel between your home and your regular workplace is usually not allowable.

Failing to Keep Mileage Records

HMRC may request evidence of business journeys.

Mixing Personal and Business Expenses

Always separate business and personal use accurately.

Losing Receipts

Without supporting documentation, claims can be difficult to justify during an HMRC enquiry.

Choosing the Wrong Claim Method

Some traders could save more tax using actual costs instead of mileage rates—or vice versa.

How to Keep Accurate Vehicle Expense Records

Good record-keeping helps maximise your tax relief and reduce the risk of HMRC issues.

Consider maintaining:

A mileage log
Digital copies of receipts
Fuel records
Service invoices
Insurance documents

Cloud accounting software can simplify this process and provide real-time visibility over business expenses.

Why Professional Tax Advice Matters

Vehicle expense rules can become complicated, especially when business and personal use overlap.

A qualified accountant can help you:

Maximise allowable deductions
Choose the most beneficial claiming method
Maintain compliant records
Reduce the risk of HMRC penalties
Plan for future vehicle purchases or leases

CTA: Need Help Claiming Vehicle Expenses?

At AM Accountex Ltd, we help sole traders across the UK manage their tax affairs efficiently and ensure they’re claiming all available business expenses.

Whether you’re unsure about mileage allowances, vehicle tax relief, or record-keeping requirements, our experienced team can provide tailored advice and support.

Contact AM Accountex Ltd today for expert guidance on self-employed vehicle expenses and tax-efficient business planning.

Frequently Asked Questions

Can a sole trader claim fuel expenses?

Yes. If using the actual cost method, fuel expenses can be claimed based on the percentage of business use. If using HMRC mileage rates, fuel costs are already included in the mileage allowance and cannot be claimed separately.