Calculate your business mileage tax deduction for Self Assessment.
Mileage Allowance
£4,500.00
Tax saving: £900.00
First 10k (45p)
£4,500.00
Over 10k (25p)
£0.00
Tax Saving
£900.00
Self-employed people can claim mileage as a business expense using HMRC simplified expenses. This is often simpler than tracking actual vehicle costs and can result in a significant tax deduction.
Managing your business tax obligations efficiently can make a significant difference to your bottom line. You may also find our Corporation Tax Calculator useful for related calculations.
For a broader view of your finances, try the Employer NI Calculator or the Take-Home Pay Calculator. All of our calculators are free to use and updated for the 2026/27 tax year where applicable.
Corporation Tax Calculator
Calculate UK corporation tax including small profits rate, main rate, and margin...
Employer NI Calculator
Calculate employer National Insurance contributions and total employment costs f...
Flat Rate VAT Calculator
Compare the Flat Rate VAT scheme against standard VAT to see which saves your bu...
Self Assessment Calculator
Calculate your Self Assessment tax bill including Income Tax, National Insurance...
Self-Employed Tax Calculator
Calculate tax, National Insurance, and take-home pay for self-employed workers.
CIS Tax Calculator
Calculate Construction Industry Scheme deductions for subcontractors at 20% or 3...
We use cookies to ensure the website works properly and to help us understand how it is used. You can accept all cookies, reject non-essential ones, or manage your preferences. Read our Privacy Policy for full details.