Company vehicles - NSSO: the CO2 contribution on 1 January 2025

As of 1 January 2025, the formula for calculating the solidarity contribution payable by employers on company vehicles will be adapted shortly.

On 1 January 2005, a solidarity contribution based on CO2 emissions and payable by the employer was introduced for commercial vehicles. This employers' levy which is calculated on a monthly basis, shall be paid per quarter to the NSSO within the same deadlines as those that apply for the social security contributions for employees.

More specifically, the levy is calculated on the basis of the car's CO2 emission rate and a flat-rate amount that depends on the type of from fuel and is indexed on 1 January of each year. From 1 January 2025, the employer solidarity contribution on company vehicles will be calculated on the basis of the following formula:

Moreover, from 1 January 2025, the amount of the CO2 contribution may under no circumstances be less than €33.22.

Example 

An employee is using a company car SKODA SUPERB, 1.6 CRDTI Classic for private ends. The car is equipped with a diesel engine. The CO2 emission rate for this category of cars is 130 g/km.

CO2 contribution from 2025: 75.75€ per month (((130 x 9) - 600) / 12) x 181.93) / 114.08]), or 227.25€ per quarter.

Reminder

CO2 emission to be used from 1 January 2021

From 1 January 2021, the following value must be taken into account when calculating the CO2 contribution:

• the NEDC 1.0 CO2 value when the vehicle only has an NEDC value;
• the WLTP CO2 value when the vehicle only has a WLTP value;
• the NEDC 2.0 CO2 value or the WLTP CO2 value (free choice) if the vehicle has both an NEDC 2.0 CO2 value and a WLTP CO2 value.

If the vehicle has two CO2 emission rates it is best to choose the lowest CO2 emission rate for the calculation of the CO2 contribution.

Strong increase of the CO2 contribution as of 1 July 2023

As part of the greening of mobility, the CO2 contribution has been strongly increased since 1 July 2023 on the basis of a coefficient and for certain vehicles. The minimum CO2 contribution is also increased.

For company cars purchased, rented or leased as of 1 July 2023: 

The CO2 contribution is multiplied by the following coefficients: 

In addition, the minimum CO2 contribution is increased as from 2025: 

Note: as electric vehicles are subject to the minimum contribution, the amount of their CO2 contribution has not been subject to the 2.75 coefficient since 1 Januari 2025.

For company cars purchased, rented or leased before 1 July 2023: 

The CO2 contribution is not to be multiplied by a coefficient. It is calculated solely on the basis of the formula explained at the beginning of this Infoflash.