P11D
UK tax glossary · Last reviewed: April 2026
Employers submit P11D forms for benefits such as company cars, private medical insurance, and interest-free loans. The cash value can reduce your Personal Allowance through your tax code.
If you complete Self Assessment, P11D figures must be included in your return.
TaxHelper provides general information based on published HMRC rates and guidance. It is not regulated financial or tax advice. For decisions involving significant sums, complex circumstances, or if you are unsure, speak to a qualified accountant or HMRC directly.