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April 22, 2026
This pillar allows you to receive your mobility budget balance once a year, following a 38.07% contribution. Also, if you have funds remaining from Pillars 1 or 2, the money is not lost, you will be able to receive it through Pillar 3.
This is a piece of legislation established by the Belgian State that allows employees—who either have a company car or are entitled to one—to exchange it for a Mobility Budget. This budget can be used to finance more sustainable transport options (Pillars 1 and 2) or to receive the remaining balance in cash (Pillar 3).
Pillar 3 is the final component of the budget. If the employee chooses not to opt for an eco-friendly company car (Pillar 1) and/or sustainable means of transport (Pillar 2), the remaining balance will be paid once a year. Additionally, if you choose Pillar 1 or 2 and have a remaining balance, you can receive the surplus through Pillar 3.
As previously mentioned, the mobility budget is equal to the employee's TCO. However, under Pillar 3, the employee is required to pay a special contribution of 38.07%. Following this deduction, the remaining balance is included in the calculation base for sickness, unemployment, and pension benefits. Consequently, the Pillar 3 amount is treated as actual salary, effectively increasing your social security contribution base.
The mobility budget cannot be carried over from year to year; the balance must be settled annually. The employer is required to pay it out no later than the first month of the following year, typically along with the monthly salary deposit.
The amount of your mobility budget is equal to the TCO (Total Cost of Ownership), which represents the total annual gross cost incurred by the employer for the company car. There are two ways to calculate it, visit our article where we explain it in great detail.
What is Pillar 1 of the Mobility Budget?
What is Pillar 2 of the Mobility Budget?
What is a mobility budget and how can I use it?
Can I benefit from a mobility budget?
What is the amount of my mobility budget and how can I calculate it?
How is the mobility budget taxed?
Sick leave, overspending, indexation, the ins and outs of the mobility budget
Which steps should I take to receive a mobility budget from my employer?
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