Employers can voluntarily register to report and account for tax on certain benefits and expenses via the RTI system before the start of the tax year. This process, known as payrolling, eliminates the need to submit P11D forms for the selected benefits at the end of the tax year.

The deadline for submitting P11D, P11D(b), and P9D forms for the 2024-25 tax year is 6 July 2025. These forms can be submitted via commercial software or HMRC’s PAYE online service, as HMRC no longer accepts paper submissions. Employees must also receive a copy of the information by the same date.

Employees must also be provided with a copy of the information relating to them on these forms by the same date. P11D forms are used to provide information to HMRC on all Benefits in Kind (BiKs), including those under the Optional Remuneration Arrangements (OpRAs) unless the employer has registered to payroll benefits.

A P11D(b) is still required for Class 1A National Insurance payments regardless of whether the benefits are being reported via P11D or payrolled. The deadline for paying Class 1A NICs is 22 July 2025 (or 19 July if paying by cheque).

If no benefits are provided during the tax year, employers can either submit a 'nil' return or notify HMRC that no return is required. Penalties apply for late submissions or payments, of £100 per 50 employees for each month a P11D(b) is late.