Getting the NI on benefits right

Where benefits in kind are provided, employers must account for Class 1A NI on the taxable value. This applies whether benefits are reported on P11Ds or processed through payroll. A common misunderstanding is that payrolling a benefit changes its NI treatment - it does not. Errors can arise where benefits are incorrectly treated as earnings subject to Class 1 NI, or where Class 1A NI is overlooked entirely. This is more likely where payroll processes have been updated to accommodate payrolling but the NI position has not been reviewed.

HMRC’s guidance makes clear that most benefits remain subject to Class 1A NI, even when taxed through a payroll. Only in limited cases will benefits fall within Class 1 NI instead. For employers, the practical step is to review how benefits are handled across both payroll and year-end processes. Ensuring that the correct class of NI is applied will help avoid underpayments, penalties and interest if the position is reviewed.