What This Site Does
Mileage Claim Calculator is a free tool for UK workers to calculate their HMRC-approved mileage allowance for business journeys made in their own vehicle.
Who It's For
This calculator is designed for employees, self-employed individuals, and company directors who use their personal vehicle for business purposes. Whether you're claiming mileage from your employer or deducting business mileage as a self-employed expense, this tool helps you calculate accurate claims using current HMRC rates.
How It Works
- Enter your business journey miles
- Add multiple journeys to track throughout the year
- Get instant calculations using HMRC approved rates (45p per mile for first 10,000 miles, 25p thereafter)
- See detailed breakdowns showing rates applied at each threshold
- Track your total claim amount for tax or reimbursement purposes
All calculations are performed in your browser. No journey data is stored or transmitted. Rates are based on current HMRC guidelines.
HMRC Mileage Allowance Rates
| Vehicle Type |
First 10,000 Miles |
Over 10,000 Miles |
| Cars and Vans |
45p per mile |
25p per mile |
| Motorcycles |
24p per mile |
24p per mile |
| Bicycles |
20p per mile |
20p per mile |
What is Mileage Allowance?
Mileage allowance is a tax-free payment you can claim for business journeys made in your own vehicle. HMRC sets approved rates that cover fuel, insurance, repairs, and vehicle depreciation.
Who Can Claim?
- Employees: You can claim if your employer doesn't reimburse you, or pays less than the HMRC rate
- Self-employed: You can claim mileage as a business expense against your profits
- Company directors: You can claim mileage for business journeys
What Counts as Business Mileage?
You CAN claim for:
- Journeys from your workplace to client/customer sites
- Travelling between different company sites
- Trips to temporary workplaces (less than 24 months)
- Business journeys from home (if home is your main workplace)
You CANNOT claim for:
- Regular commuting between home and your permanent workplace
- Private/personal journeys
- Journeys that are "substantially private" even if partly for business
How the Rates Work
For cars and vans, you get:
- 45p per mile for the first 10,000 business miles in the tax year
- 25p per mile for every mile over 10,000
Example: If you drive 12,000 business miles:
First 10,000 miles: 10,000 × 45p = £4,500
Next 2,000 miles: 2,000 × 25p = £500
Total claim: £5,000
How to Claim
If you're employed:
- Keep a detailed log of all business journeys (date, destination, miles, purpose)
- If your employer pays less than HMRC rates, you can claim tax relief on the difference
- Claim through Self Assessment or using form P87 (for previous years)
If you're self-employed:
- Record all business mileage in your accounts
- Claim the allowance as a business expense on your Self Assessment
- Keep records for at least 5 years after the Self Assessment deadline
Record Keeping
You must keep accurate records including:
- Date of each journey
- Starting point and destination
- Business purpose of the journey
- Miles travelled
- Total miles claimed in the tax year
Important: You cannot claim mileage allowance AND actual vehicle running costs. It's one or the other. For most people, mileage allowance is simpler and more beneficial.
Passengers
If you carry passengers on business journeys, you can claim an additional:
- 5p per mile per passenger
- Only for passengers who are also on business (employees or business partners)