You can make a claim if you earn over £12,570 per year (the tax-free personal allowance) as a PAYE employee.
Worth knowing: the closer your earnings are to £12,570, the smaller a rebate tends to be — you can only be refunded tax you have actually paid, and at that level there is not much of it. The more you earn and the more work expenses you cover yourself, the bigger the potential refund. 💷
Not sure where you stand? Start a claim at app.taxpro.co.uk — the qualifying questions take under a minute.