My accountant sent me a spreadsheet last December. Three columns: ICE, hybrid, electric. The "2026 deductibility" row showed 0%, 0%, 100%. He'd highlighted the 100% in yellow, with a comment: "Last year at full rate. After that, it drops."
In 2026, Belgium no longer subsidises the company car. It subsidises the electric company car — and only that. Here's what it concretely means for your bottom line.
What deductibility for an EV company car ordered in 2026?
The rule has been crystal clear since 1 January 2026: for Belgian companies (SA, SRL, SC), only zero-emission vehicles are tax deductible. ICE and hybrid cars ordered in 2026 have 0% deductibility — the measure isn't gradual, it's binary.
For EVs, deductibility remains at 100% in 2026, but it's programmed to decline:
| Year of order | EV deductibility | ICE/hybrid (new contract) |
|---|---|---|
| 2026 | 100% | 0% |
| 2027 | 95% | 0% |
| 2028 | 90% | 0% |
| 2029 | 82.5% | 0% |
| 2030 | 75% | 0% |
| 2031 | 67.5% | 0% |
Source: SPF Finances, law of 25 December 2023 amending CIR 1992
The lock-in mechanism is the key point: the applicable rate is based on the year the vehicle is ordered, not delivered. An EV ordered on 30 December 2026 and delivered in March 2027 benefits from the 100% rate. An EV ordered on 2 January 2027: 95%.
Last year at full rate — SPF Finances, CIR 1992
Zero deductibility for any new company contract since 1 Jan.
Tax difference between a 2026 order (100%) and 2028 (90%) on a €45,000 EV
How much does an EV cost the employee? The ATN calculation in 2026
The benefit-in-kind (ATN) is the taxable amount the employee declares for private use of a company car. For an EV, the calculation uses the minimum CO2 coefficient — giving the lowest possible ATN.
ATN formula: (Catalogue value × 6/7) × CO2 rate × age coefficient
For an EV: CO2 rate = 4% (legal floor, since 0 g/km). The age coefficient reduces by 6% per year after the first year.
| Model | Catalogue value | Annual ATN (new) | Employee tax (50%) |
|---|---|---|---|
| Skoda Enyaq 85 | €43,990 | €1,690 (min.) | €845 |
| Tesla Model Y | €46,990 | €1,690 (min.) | €845 |
| VW ID.4 Pro S | €49,990 | €1,713 | €857 |
| BMW iX1 | €52,500 | €1,800 | €900 |
| Diesel comparison (VW Tiguan 130 g) | €45,000 | €3,085 | €1,543 |
Legal minimum ATN 2026: €1,690/year — applies to most EVs on the market under €50,000.
The saving for the employee: €698 less tax per year compared to the equivalent diesel. Over 4 years, that's €2,792 net — without changing a single habit.
What CO2 contribution for the employer?
The CO2 solidarity contribution is a quarterly employer charge due to the ONSS. For EVs, only the legal minimum applies.
| Type | CO2 | Monthly contribution 2026 | Over 48 months |
|---|---|---|---|
| EV (ordered after Jul. 2023) | 0 g | €42.34 | €2,032 |
| Diesel (130 g) | 130 g | ~€145 | €6,960 |
| Diesel (150 g) | 150 g | ~€175 | €8,400 |
| Petrol (140 g) | 140 g | ~€160 | €7,680 |
Source: ONSS, amounts indexed January 2026. CO2 contribution for EVs ordered before Jul. 2023: min. €33.93/month.
Employer saving over 48 months: €4,928–6,368 per vehicle. For an SME with 5 company cars, switching to all-electric generates €25,000–32,000 in contribution savings over 4 years.
The maths is done: in 2026, running an ICE company car costs more in taxes than the vehicle itself is worth as a benefit. It's the first time in Belgium that the tax system makes the EV cheaper than diesel before you even talk about fuel.
What registration and road tax for an EV by region?
Regional taxes changed in 2025–2026. The era of full EV exemptions is partially over.
| Tax | Flanders | Wallonia | Brussels-Capital |
|---|---|---|---|
| Registration tax (new EV 2026) | ~€61.50 | ~€61.50 | N/A (annual road tax) |
| Annual road tax (EV) | ~€40–80 | ~€40–80 | ~€102.96 (min.) |
| Registration tax diesel 150 hp | €1,200–2,200 | €800–1,800 | N/A |
| Annual road tax diesel | €800–1,200 | €500–900 | €400–800 |
Sources: Cartax.be, regional SPF Finances, 2026 tariffs
In Flanders, the 2026 novelty: new EVs now pay a flat registration tax of about €61.50, compared to €0 previously. A political signal more than a real cost — compared to the average €1,500 for a diesel SUV, the gap remains massive.
Concrete case: total tax cost EV vs diesel over 4 years
Take two company vehicles at €45,000 catalogue value, used for 48 months, 20,000 km/year, registered in Flanders:
| Item | EV (Enyaq 85) | Diesel (Tiguan 130 g) |
|---|---|---|
| Deductibility (ISOC 25%) | -€11,250 | €0 |
| ATN — employee tax (50%, 4 yrs) | €3,380 | €6,172 |
| CO2 contribution (48 months) | €2,032 | €6,960 |
| Registration + road tax (4 yrs) | ~€382 | ~€5,800 |
| Energy (20,000 km/yr) | ~€2,240 | ~€7,200 |
| Total tax + energy (4 yrs) | -€3,216 | +€26,132 |
The EV generates a net saving after tax deduction. The diesel costs €26,000 in charges over 4 years.
The total gap between EV and diesel over 4 years: ~€29,000 in favour of the EV. For a company at the 25% ISOC rate, the EV isn't just cheaper — it generates a tax saving that exceeds the running cost.
What about self-employed sole proprietors?
For self-employed individuals (liberal professionals, artisans, consultants), deductibility works differently. The deduction is applied to personal income tax on the professional share of expenses. An EV used 75% for work: 75% of costs (leasing, insurance, energy, maintenance) are deductible at 100%.
Specificity: self-employed sole proprietors claiming actual expenses can still partially deduct a plug-in hybrid in 2026 (unlike companies). The calculation depends on emissions and the CIR 1992 formula — but the result is systematically lower than for an EV.
For a self-employed consultant in Brussels, driving 25,000 km/year with a €45,000 EV:
- Annual deductible expenses (75% professional): ~€8,400
- Tax saving (50% marginal bracket): ~€4,200/year
- Versus an equivalent diesel (limited deductibility): ~€2,100/year
- Net EV advantage: ~€2,100/year, or €8,400 over 4 years.
| Modèle | Prix | Autonomie réelle | Batterie | Recharge DC |
|---|---|---|---|---|
| Škoda Enyaq iV 80Recommandé | 43 990 € | 410 km | 82 kWh | 135 kW |
| Tesla Model 3 | 42 990 € | 380 km | 60 kWh | 170 kW |
| Hyundai IONIQ 5 | 41 990 € | 390 km | 77.4 kWh | 233 kW |
| Kia EV6 | 44 990 € | 420 km | 77.4 kWh | 233 kW |
Le verdict de Christophe F.
In 2026, the 100% deductibility of an EV company car in Belgium represents a closing tax window: each year of delay costs 5–7.5 percentage points of deductibility. For a company with a single vehicle, the EV vs diesel gap reaches €29,000 over 4 years. For an SME with 5 vehicles: €145,000. The minimal ATN, floor CO2 contribution, and reduced registration taxes all stack up. Christophe's advice: order before 31 December 2026. Not out of ideology — out of arithmetic.
