How to Claim a Tax Refund in the UK 2026 (Step-by-Step) – Discover how UK taxpayers reclaim £300–£900 from HMRC every year. Learn eligibility, required forms, and how to receive your refund in as little as 3–5 days. Many UK taxpayers overpay tax each year without realising it. This can happen due to incorrect tax codes, job changes, emergency PAYE deductions, or simply because HMRC did not have the correct information about your income. Recent reports suggest millions of UK taxpayers overpay income tax every year, often due to tax code errors or changes in employment circumstances. The good news…