If you use a personally owned vehicle for business purposes you are entitled to claim a tax free allowance from your company for all qualifying business miles you travel. A journey will be a qualifying business journey if it is wholly, exclusively and necessarily undertaken for the purpose of the trade.
For these journeys relief can be claimed at the HMRC approved mileage rates which are as follows:
First 10,000 business miles in the tax year:
Cars and Vans - 45p
Motorcycles - 24p
Bicycles - 20p
Each business mile over 10,000 in the tax year:
Cars and Vans - 25p
Motorcycles -24p
Bicycles - 20p
The cost of reimbursement of the business mileage will be a tax deductible expense for the company attracting corporation tax relief starting at 19%, reimbursement of the mileage will also be tax free when paid to you as the limited company director. If amounts are paid in excess of these rates although the company will still receive corporation tax relief of the full amount, the excess amount would be subject to personal tax and national insurance meaning for limited company directors it would not be tax efficient to pay any more than the approved rates.
These rates are designed to cover all vehicle related costs, such the actual cost of the car, insurance, servicing etc, therefore reimbursement of any other amounts in excess of the approved mileage rates would also cause tax implications.