Income TaxMar 20, 2026

How is benefit in kind (BIK) calculated on a company car in Ireland for 2024?

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Benefit in Kind (BIK) on a company car is a taxable benefit that arises when your employer provides you with a car for private use. The BIK is added to your employment income and taxed under PAYE at your marginal rate.

How BIK on cars is calculated from 2023:

From January 2023, Ireland moved to an emissions-based BIK system that replaced the old mileage-based system. The BIK is calculated as a percentage of the Original Market Value (OMV) of the car, with the percentage determined by the vehicle's CO2 emissions band.

CO2 Category Emissions (g/km) BIK Rate
A0 0g (pure electric) 9%
A1 1–59g 15%
A2 60–99g 20%
A3 100–139g 25%
A4 140–179g 30%
A5 180g+ 35%

Business mileage driven during the year reduces the BIK rate, with higher business mileage attracting lower percentages within each band.

Example: If your company car has an OMV of €35,000 and emits 120g/km (Category A3, 25% BIK rate), your annual BIK is €8,750. This is added to your taxable income. At the 52% marginal rate (40% income tax + 8% USC + 4% PRSI), the tax cost is approximately €4,550 per year.

Electric vehicles: Pure EVs (0g/km) qualify for a reduced BIK rate of 9%, and there is an OMV reduction of €35,000 for EVs for 2024, further reducing the BIK base. This relief is being tapered each year.

How it is reported: Your employer processes the BIK through payroll and reports it on your P60/End-of-Year Statement. If the wrong amount is applied, you can correct it via Revenue's myAccount.

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Disclaimer: This information is for general educational purposes and is not professional tax advice. Tax situations vary. Consult a qualified tax professional for advice specific to your circumstances.