P45, P60 and P11D forms: workers' guide
P11D
Your employer might give you a copy of your P11D if they used it to tell HM Revenue and Customs (HMRC) about your ‘benefits in kind’ (for example company cars or interest-free loans).
They do not have to do this, but they must tell you how much each benefit is worth.
You might not get a P11D if your employer takes the tax you owe on your benefits out of your pay.
Your employer will write to you to explain how this works.