Claim Your Tax Back / Lesson 1 of 7
The reliefs employees miss most
You have paid for something to do your job. Did anyone ever tell you that is deductible?
The short answer
- ✓ The employee test adds "necessarily": the job must have required the cost
- ✓ You are refunded the tax on the expense, not the expense itself
- ✓ Commuting and ordinary clothing never qualify
- ✓ Relief often arrives as a tax code increase rather than a payment
The rule for employees
You can claim tax relief on a cost you paid yourself, that your employer did not reimburse, and that was incurred wholly, exclusively and necessarily in performing your job.
Note the extra word compared to the self-employed test: necessarily. It is not enough that the cost helped. The job has to have required it. That single word is why an employee cannot claim a home office as freely as a sole trader can.
What is actually claimable
| Cost | Claimable? |
|---|---|
| Cleaning a uniform your employer does not launder | Yes, usually at a flat rate |
| Tools and specialist equipment you buy yourself | Yes |
| Professional subscriptions on HMRC's approved list | Yes |
| Business mileage in your own car, underpaid by your employer | Yes |
| Working from home where the job requires it | Yes, restricted |
| Commuting to your normal workplace | No, never |
| Ordinary clothes you wear to work | No |
| Anything your employer already reimbursed | No |
| Childcare so you can work | No |
What a claim is actually worth
This trips people up constantly. You are not refunded the cost. You are refunded the tax on the cost.
Expense claimed £250
Basic rate taxpayer, refund at 20% £50
Higher rate taxpayer, refund at 40% £100Small per year, which is exactly why people dismiss it. Claim four years at once, as the last module explains, and the numbers stop being trivial.
The bit HMRC does not spell out
Relief is often given by increasing your tax code rather than by sending money. So you may claim, see no payment, and conclude nothing happened, when in fact your take-home rose slightly every month from then on.
Better still, an ongoing claim such as a uniform allowance usually stays in your code for future years automatically, so one claim keeps paying.
Common mistakes
- Assuming an employer reimbursement is claimable. Only unreimbursed costs count.
- Claiming commuting. Home to your normal workplace never qualifies.
- Expecting a cheque for the full cost. You get the tax on it.
- Dismissing it as too small. Four years and an ongoing code change adds up.
Try it on your own numbers
This is the same calculator as the full tool page, using 2026/27 rates.
About you
Your income sets your tax rate - which decides what each claim is worth to you.
Which of these apply to you?
Tick everything that's true - most people qualify for more than one.
Extra relief only applies to higher/additional-rate taxpayers.
Your result
Yes - HMRC could owe you to
across claims - every one is free to make directly with HMRC. Never give a refund agent 25–30% of your own money.
No obvious refund found
Nothing you ticked points to an overpayment. If your circumstances change - job move, working from home, marriage - come back and re-check.
Estimates only, not advice - the exact amount depends on your full tax position. Confirm on GOV.UK before claiming.
Most claims can be backdated up to 4 tax years - the sooner you claim, the less you lose.
Saved checks
| Check | Claims found | Estimated refund | |
|---|---|---|---|
Key takeaways
- ✓ The employee test adds "necessarily": the job must have required the cost
- ✓ You are refunded the tax on the expense, not the expense itself
- ✓ Commuting and ordinary clothing never qualify
- ✓ Relief often arrives as a tax code increase rather than a payment
Check you have got it
3 quick questions. No score is kept, and you can change your mind.
1. You spend £250 on tools for your job. What do you get back as a basic-rate taxpayer?
2. Can you claim the cost of travelling from home to your usual office?
3. You claimed and no money arrived. What most likely happened?
Sources
Finished this lesson?
Mark it done and we will remember where you got to.
