
Mileage Tax Relief Explained: How Much Could You Claim?
If you regularly drive between client sites, temporary workplaces or customer locations, this guide explains everything you need to know about Mileage Allowance Relief and how to make a claim.
What Is Mileage Tax Relief?
Mileage tax relief (also known as Mileage Allowance Relief or MAR) is available when you use your own vehicle for business journeys and your employer pays less than HMRC's approved mileage rates, or doesn't pay mileage at all.
Rather than claiming the mileage itself, you're claiming tax relief on the difference between what HMRC allows and what you've been paid.
Who Can Claim?
You may qualify if you're employed and regularly travel for work.
Common occupations include:
- Domiciliary care workers
- Construction workers
- Electricians
- Plumbers
- Engineers
- Telecoms engineers
- Sales representatives
- Healthcare workers
- Surveyors
- Maintenance technicians
If your job involves travelling to multiple locations during the working day, it's worth checking your eligibility.
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What Counts as Business Mileage?
Business mileage generally includes journeys between:
- Different client locations
- Customer homes
- Temporary workplaces
- Different work sites
- Business meetings
- Training venues
Ordinary commuting between your home and your permanent workplace usually doesn't qualify.
Understanding the difference between a permanent and temporary workplace is one of the most important parts of making a successful claim.
What Is a Temporary Workplace?
A temporary workplace is somewhere you attend for a limited period or specific purpose rather than your normal place of work.
Many construction workers, care workers, agency staff and contractors spend much of their working life travelling to temporary workplaces.
These journeys can often qualify for tax relief.
How Much Could I Receive?
Every claim is different and depends on factors such as:
- Your mileage
- Your tax rate
- What your employer reimbursed
- How many years you're claiming for
Many successful claims are worth several hundred pounds, while some workers receive refunds of well over £1,000.
What Information Do I Need?
To make a claim you'll usually need:
- Your employer's details
- Your employment dates
- Approximate business mileage
- Details of your work locations
- Any mileage payments you've already receive
Don't worry if you haven't kept a detailed mileage log. Our advisers can discuss what information may still be available.

Common Questions
Can I claim if my employer pays some mileage?
Yes. If you're paid less than HMRC's approved rates, you may still qualify for additional tax relief.
Can I claim for previous years?
In many circumstances, yes. You may be able to claim for earlier tax years if you're still within HMRC's time limits.
Can I claim if I'm a care worker?
Absolutely. Domiciliary care workers are one of the most common groups entitled to mileage tax relief because they regularly travel between service users.
Can agency workers claim?
Many agency workers can claim, particularly where they travel between temporary workplaces or client locations.
How Far Back Can You Claim?
Depending on your circumstances, HMRC generally allows tax relief claims for previous tax years, meaning you could receive a larger refund than expected.
Why Choose Go Tax Refunds?
At Go Tax Refunds, we specialise in helping workers across the UK maximise their legitimate mileage tax relief.
Our experienced team will:
- Check your eligibility free of charge.
- Calculate your potential refund.
- Handle the HMRC paperwork.
- Keep you updated throughout your claim.
- Maximise every legitimate entitlement.
Thousands of workers miss out on tax relief every year simply because they don't realise they're eligible.
If you think you may qualify, get in touch with Go Tax Refunds today for a free, no-obligation assessment.
No Refund? No Fee.
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