According to HMRC, a tax rebate is “a refund on taxes when the tax liability is less than the taxes paid”. Put simply, when you’re owed a HMRC tax refund, it’s because you’ve already paid too much tax. When you’re paying your own way to temporary workplaces, it’s more than likely you’re owed tax back for your expenses. “Temporary” means somewhere you have worked for less than 24 months consistently. It’s worth making sure you get back what you’re owed, as you can claim a rebate for up to 4 years.