A fundamental part of is maintaining a record of all the expenses and benefits in kind that you provide to your employees (and their families or households).
You will need to send this information to HMRC at the end of every tax year. In addition, HMRC could ask to see evidence of your record keeping.
HMRC needs to know this information in order to calculate your employer’s NI contributions.
Usually you’ll need to pay Class 1A NI contributions on the majority of benefits you give to your employees. You may also need to pay tax on employee benefits.