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.

Ensure compliance with HMRC rules when providing company cars. From P46(Car) submissions to benefit reporting, learn what steps to take for private use and specific exemptions.

Here are the steps you need to follow to inform HMRC if you make any cars available for private use by company directors or employees. Private use of a car includes employees’ journeys between home and work, unless they are traveling to a temporary work location.

You must submit a P46 (Car) form to HMRC if you:

• Provide company cars to employees
• Stop providing a company car
• Provide an additional car to someone

You can submit the form in the following ways:

• Complete it online and send a printed copy to the address listed on the form.
• Use HMRC’s PAYE Online service for employers.
• Use your payroll software.

Additionally, you must report the car benefit on your end-of-year forms and pay Class 1A National Insurance on its value. You must also notify HMRC if a company car is replaced.

You do not need to notify HMRC if you provide:

• 'Pool' cars, which are used by multiple employees for business purposes and usually kept on your premises.
• Cars adapted for employees with disabilities, if the only private use is for commuting.
• Emergency vehicles used exclusively by on-call employees in police, fire and rescue, ambulance, or paramedic services.

Advisory fuel rates for company cars help employers and employees manage fuel costs without triggering tax liabilities. Learn how to use these rates to avoid tax, especially car fuel benefit charges.

HMRC's fuel rates also known as advisory fuel rates are intended to reflect average fuel costs and are updated quarterly. These rates only apply to employees using a company car.

The rates can be used either by employers who reimburse employees for business travel in their company cars or where employees are required to repay the cost of fuel used for private travel.

HMRC will accept that there is no taxable profit and no Class 1A National Insurance on reimbursed travel expenses where employers pay a rate per mile for business travel no higher than the published advisory fuel rates.

Employees can also use the advisory fuel rates to repay the cost of fuel used for private travel. This is the easiest way to ensure that no fuel benefit charge (for private journeys in a company car) is payable. However, the fuel benefit charge will still be payable if it cannot be demonstrated to HMRC that the driver of the car has paid for all fuel used for private journeys, this includes commuting to and from work. To ensure that this does not occur employees will need to keep a log of private mileage.