Let’s be honest tracking every business trip or saving petrol receipts isn’t the most exciting part of being self-employed. But when it comes to reducing your tax bill, vehicle and travel expenses can make a significant difference.
The key isn’t just knowing what to claim it’s knowing how to claim it correctly so HM Revenue & Customs stays satisfied.
The “Wholly and Exclusively” Rule
Before claiming anything, you must follow HMRC’s core rule:
Your expense must be wholly and exclusively for business use.
You can claim:
- Client meetings
- Business travel to different locations
- Trips to suppliers or the post office
You cannot claim:
- Your daily commute to a regular workplace
- Personal trips
If a journey includes both business and personal use, only the business portion is allowable.
Mileage vs Actual Costs: Which Should You Choose?
You have two methods to claim vehicle expenses—but the choice matters.
1. Simplified Expenses (Mileage Method)
This is the easiest option and works well for most freelancers and small business owners.
- 45p per mile for the first 10,000 miles
- 25p per mile after that
- 24p per mile for motorcycles
This method covers most running costs, including:
- Fuel
- Insurance
- Servicing and repairs
Important: You can still claim parking fees and tolls separately.
Best for: Those who want simplicity and minimal paperwork.
2. Actual Costs Method
This method involves calculating your real vehicle expenses and claiming the business-use portion.
You can include:
- Fuel
- Insurance
- Repairs and servicing
- MOT
- Breakdown cover
Then apply your business-use percentage.
Example: If 60% of your driving is for business, you can claim 60% of your total costs.
Additional benefit: You may also claim capital allowances if you purchased the vehicle (subject to HMRC rules).
Best for: High-cost vehicles, vans, or heavy business use.
Can You Switch Methods?
This is where many people get caught out.
- If you start with the mileage method, you generally cannot switch to actual costs later for the same vehicle
- If you start with actual costs, switching to mileage later is limited and depends on whether capital allowances have been claimed
The safest approach: choose carefully from the beginning.
Don’t Miss These Additional Travel Expenses
Many self-employed professionals overlook these:
- Public transport: Train and bus fares for business trips
- Parking and tolls: Fully claimable
- Hotels: If your work requires an overnight stay
- Meals: Only if you are traveling for business (not everyday meals)
Important: Fines and penalties are not allowable HMRC will not cover them.
Preparing for Making Tax Digital (MTD)
From April 2026, Making Tax Digital will apply to self-employed individuals earning over £50,000.
This means:
- Keeping digital records
- Submitting quarterly updates
- No more relying on manual or paper records
The threshold is expected to reduce to £30,000 in later phases.
Starting a digital mileage log or using an app now will make this transition much easier.
The Bottom Line
- Use mileage method if you want simplicity and drive a cost-efficient vehicle
- Use actual costs if your vehicle is expensive to run or heavily used for business
The right method can save you hundreds—or even thousands—each year.
Final Thought
Vehicle expenses are one of the most overlooked tax-saving opportunities for self-employed professionals. A simple change in how you track and claim your costs today could make a big difference to your tax bill tomorrow. So, how are you tracking your business journeys right now an app, a spreadsheet, or last-minute guesswork?
If you’re unsure which method works best for your situation or want to make sure you’re claiming everything correctly, getting expert support can save you both time and money. At Pro Taxman, we help self-employed professionals and business owners stay compliant with HMRC while maximising every legitimate tax-saving opportunity.