EIM64125 | Tax treatment of Association footballers: loyalty bonuses
From HM Revenue & Customs · Employment Income Manual
Certain clubs in the English Football League reward their players with loyalty bonuses. That is, lump sum payments to mark the completion of a specified number of years’ service. These payments are normally described as discretionary but nevertheless, constitute emoluments that are taxable as employment income (Weston v Hearn (25TC425)).