Overview

• Employers were required to issue P60 forms by May 31 outlining pay and tax deductions from April 6 to April 5.
• HMRC advises employees to examine the “final tax code” on their P60 for mistakes that might affect take-home pay.
• Tax codes BR, D0 and D1 or codes missing the letter “L” may indicate no personal allowance was applied.
• The average worker has overpaid almost £700 due to incorrect codes, although some unusual codes can occur legitimately.
• Employees have four years to claim back overpaid tax through HMRC, which has already refunded £44 million in early 2025 at an average of £2,881 per individual.