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Determine the P11D Value
First, identify the P11D value of the car. This is the manufacturer's list price of the car, including any optional extras, but excluding road tax and the first year's registration fee. For example, let's say the P11D value is £25,000.
Find the CO2 Emissions Percentage
Next, find the CO2 emissions percentage for the car. This can be found on the car's certificate of registration or by contacting the car's manufacturer. For example, let's say the CO2 emissions are 120g/km, which corresponds to a 24% emissions percentage.
Calculate the Taxable Benefit
Now, calculate the taxable benefit by multiplying the P11D value by the CO2 emissions percentage. Using our example, the taxable benefit would be £25,000 x 24% = £6,000.
Apply Any Capital or Private Use Contributions
If the employee has made any capital contributions (e.g., paying for optional extras) or private use contributions (e.g., paying for fuel), these need to be subtracted from the taxable benefit. For example, let's say the employee made a £1,000 capital contribution. The taxable benefit would then be £6,000 - £1,000 = £5,000.
Calculate the Benefit-in-Kind Tax
Finally, calculate the benefit-in-kind tax by applying the employee's income tax rate to the taxable benefit. For example, if the employee is a 20% taxpayer, the benefit-in-kind tax would be £5,000 x 20% = £1,000 per year.
Using a Calculator for Convenience
While it's possible to calculate the company car tax manually, it's often easier to use a free UK tax tool or calculator. These tools can simplify the process and reduce the risk of errors. Simply input the P11D value, CO2 emissions percentage, and any capital or private use contributions, and the calculator will do the rest.
Introduction to Company Car Tax
The UK company car benefit-in-kind tax is a tax levied on employees who use a company car for personal use. The tax is calculated based on the car's P11D value and CO2 emissions. In this guide, we will walk you through the steps to calculate the company car tax manually.
Prerequisites
Before you start, you need to know the P11D value of the car and its CO2 emissions percentage. You can find this information on the car's certificate of registration or by contacting the car's manufacturer.
The Formula
The company car tax is calculated using the following formula: Benefit-in-Kind Tax = (P11D value x CO2 emissions percentage) - (Capital Contributions + Private Use Contributions)
CO2 Emissions Percentage
The CO2 emissions percentage is based on the car's CO2 emissions in grams per kilometer (g/km). The percentage is applied to the P11D value to determine the taxable benefit.
Step-by-Step Calculation
Here are the steps to calculate the company car tax: