A P11d is a form given to employees and HMRC to show all expenses and benefits paid to directors and employees in a financial year.
As well as issuing a P60 every year, to show all payments and deductions, employers are required to provide a P11d to report any expenses and benefits that have been paid to directors and employees during the tax year ended 5th April.
If you have received employee benefits, your employer is required to provide you with a form that details what they were. It essentially covers anything that your company has paid for, from which you have derived personal enjoyment including personal use of a company asset. If your company only reimburses you for wholly business-related expenses, you don’t have to report these on the form and you don’t require a P11d.