How to use the tool
A practical guide in five steps, from quotation to a well-founded decision. No prior tax knowledge needed: the tool does all the calculating for you.
- 1
Explore the catalogue
Open ‘Catalogue’. You will see the most common company cars in Belgium, each with its 2026 tax impact right away: tax deduction, benefit in kind, disallowed expenses and CO₂. Use the search bar or the filter chips (electric, plug-in hybrid, hybrid, diesel/petrol) to narrow things down.
Open the catalogue - 2
Add vehicles
Click ‘Add to comparison’ on a card. A bar appears at the bottom with your selection and a ‘Go to comparison’ button. Have a specific quotation? Enter it under ‘Vehicles’: fill in make, price, CO₂ and policy (fuel/charge card, home charging point) and see the live tax estimate immediately.
Manage your vehicles - 3
Compare up to three cars
Go to ‘Comparison’ and pick up to three candidates using the chips at the top. You can set the first year of use and switch on the reduced SME rate. The tool shows the winner banner, a key-figures table marking the most favourable value per criterion, the scoring matrix with six weighted criteria and a chart (total cost, benefit in kind or deduction).
Start a comparison - 4
Read the recommendation and save
Every candidate gets a final score out of 10 and a recommendation: accept (≥ 7), consider (4 to 7) or reject (< 4). Give the comparison a title and a short rationale, then click ‘Save decision’; it goes into the decision history. With ‘Print / PDF’ you can take the recommendation into the board meeting.
Go to the score dashboard - 5
Consult the parameters
The ‘Parameters’ page lists the tax values used in the calculation: minimum benefit in kind, reference CO₂, social security index and multiplier, and the full deduction calendar. They apply across Belgium and are updated centrally after the federal budget agreement.
View the parameters
Glossary
The terms you come across in the tool, explained briefly.
- Benefit in kind (VAA / ATN)
- The taxable value of an employee's private use of a company car.
- Disallowed expenses
- Costs the company books but may not (fully) deduct for tax purposes; they increase taxable profit.
- Tax deduction (corporate tax)
- The percentage of car costs that is deductible for corporate income tax.
- CO₂ social security contribution
- Monthly solidarity contribution the employer pays for each car with private use.
- TCO
- Total cost of ownership: the full cost of use over the term (four years here).
- Phase-out calendar
- The tapering path along which the deduction for fossil-fuel cars and plug-in hybrids falls to 0%.
More background and the full formulas are on the Tax framework page.