A friend of mine — IT consultant based in Brussels — showed me his spreadsheet back in January. Two columns: his BMW 330i diesel on a lease, and a Tesla Model Y electric. The difference over 48 months — deductibility, fuel, BIK, road tax — exceeded €14,000. He signed the contract the next day. His only question: "Why did nobody tell me this sooner?"
In 2026, the numbers speak for themselves. And this is the last year they speak this loudly.
Why should a self-employed professional in Belgium switch to electric in 2026?
2026 is the last year a 100% electric vehicle ordered in Belgium qualifies for 100% tax deductibility. This rate is locked in for the entire contract duration: if you sign in 2026, you keep the 100% rate even in 2030.
From 2027, deductibility drops to 95%. Then 90% in 2028, 82.5% in 2029, 75% in 2030 and 67.5% in 2031 (SPF Finance, automotive tax reform).
For a self-employed professional driving 20,000 km/year with an EV worth €45,000, the difference between a contract signed in 2026 and one signed in 2028 represents around €1,800 in cumulative tax savings over 4 years. That is not a detail.
Last year at full rate — SPF Finance
Versus 5.5 to 18% for ICE vehicles
Approx. €70/month tax at the 50% bracket
Additional advantage for sole traders (independent natural persons, IPP): unlike companies, sole traders can still partially deduct plug-in hybrids in 2026. But the maths are clear: a 100% electric vehicle remains far more advantageous, since the fossil fuel component of a PHEV is only 50% deductible.
Lease or purchase: which option suits a self-employed person?
With operational leasing, the monthly payment is fully deductible as an operating expense. No depreciation to calculate, no residual value to manage, no capital tied up. For a self-employed professional who prefers to keep cash flow free, it is the logical choice.
With a purchase, you depreciate the vehicle over 4 to 5 years. The EV is 100% deductible — but you lock up €35,000 to €55,000 in capital. Your accountant will explain that in cash flow terms, leasing frees up margin to invest in your business.
Exception: if you have strong cash reserves and keep your vehicles for over 6 years, buying may work out cheaper. But that applies to a minority of self-employed professionals.
In practice, 70% of self-employed Belgians driving EVs opted for leasing in 2025 (source: Renta, Belgian leasing federation).
My advice: sign a 48-month lease before 31 December 2026. You lock in 100% deductibility for 4 years. It is the best tax gift you will give yourself this year.
How much does an EV really cost a self-employed professional over 4 years?
Raw figures are not enough. What matters is the net cost after tax benefit. Here is the comparison for a self-employed person with a company, 20,000 km/year, 50% marginal tax bracket.
| Item (48 months) | BMW 330i diesel | Tesla Model Y |
|---|---|---|
| Monthly lease payment | €650 | €569 |
| Total lease cost | €31,200 | €27,312 |
| Deductibility | 40% (diesel 2026) | 100% |
| Total tax saving | €6,240 | €13,656 |
| Energy/fuel cost | €7,200 | €2,880 |
| BIK taxed (4 years) | ~€11,600 | ~€6,760 |
| BIK tax (50%) | €5,800 | €3,380 |
| Net cost over 4 years | ~€37,960 | ~€19,916 |
The gap exceeds €18,000 over 48 months. Even adjusting for professional use ratio (75%) and rate variations, the EV wins by at least €12,000 to €15,000 depending on assumptions.
The energy calculation: an EV consumes around 18 kWh/100 km in mixed Belgian driving. At €0.30/kWh average residential rate, that gives €5.40/100 km — versus €10 to €12/100 km for a diesel at €1.85/L.
Which models for which self-employed profile?
Consultant, freelance IT, sales rep — high mileage, professional image
The Tesla Model 3 remains the benchmark for this profile: 380 km real-world range, dense Supercharger network in Belgium (20+ stations), 10-80% charge in 27 minutes. On a lease: around €480 to €530/month all-inclusive.
If you meet clients or image matters: the BMW i4 eDrive40 (590 km WLTP, 286 hp, premium finish) at €580 to €650/month. The interior is a step above — and for a consultant who spends hours between appointments, comfort is not a luxury.
Architect, photographer, tradesperson — boot space and versatility
The Tesla Model Y (580 km WLTP, 854 L boot with seats folded, towbar available) remains Belgium's best-selling electric SUV for good reason. It combines range, space and charging network. On a lease: €569 to €650/month.
Tighter budget alternative: the Skoda Enyaq iV 80 (77 kWh, 567 km WLTP, 585 L boot). Less flashy, but interior space is excellent and the Skoda dealer network is well established in Belgium. On a lease: around €460 to €520/month.
Liberal profession — prestige and comfort, clients on board
The BMW i5 eDrive40 is the obvious choice for a lawyer, doctor or notary who carries clients. At 4.97 m long, with a generous rear cabin, impeccable sound insulation and flawless finish. On a lease: €700 to €850/month. The cost is high, but 100% deductibility makes it comparable to a 5 Series diesel after tax.
The Audi Q6 e-tron (100 kWh, 800V architecture, 625 km WLTP) is the premium SUV alternative. Ultra-fast charging and the Audi badge. On a lease: €750 to €900/month.
Tight budget — local business, under 15,000 km/year
The BYD Dolphin Comfort (60.4 kWh, 427 km WLTP, catalogue price from €29,990) is the most compelling entry point in 2026. On a lease: from around €350/month. Full equipment, 6-year warranty, and one of the lowest consumption figures on the market.
The Renault Megane E-Tech (60 kWh, 450 km WLTP) offers a compact premium format with a strong dealer network in Belgium. On a lease: around €400 to €450/month.
Does the BIK of an EV make a real difference for a self-employed person with a company?
Yes, and a decisive one. The BIK (benefit in kind) is the tax you pay on private use of your company car. For an EV, the rate is 4% — the legal minimum — because CO₂ emissions are 0 g/km.
Formula: catalogue value × 6/7 × 4% × age coefficient.
For a Tesla Model Y at €47,990: BIK = 47,990 × 6/7 × 4% = €1,645/year. As this falls below the legal minimum (€1,690 in 2026), the BIK will be €1,690/year, meaning €845 annual tax at the 50% bracket.
For a BMW 330i diesel at €48,000 with 130 g CO₂/km, the BIK rate rises to around 10.5%. BIK = 48,000 × 6/7 × 10.5% = €4,320/year, meaning €2,160 annual tax. The difference: €1,315/year, €5,260 over 4 years.
Le verdict de Christophe F.
For a self-employed professional in Belgium in 2026, switching to electric is first and foremost a calculation — and the calculation is unequivocal. 100% deductibility, minimal BIK, cheaper energy, reduced registration tax: an EV saves between €12,000 and €18,000 over 4 years compared to an equivalent ICE vehicle. The only remaining question is which model. For most self-employed professionals, a Tesla Model 3 or Model Y on a 48-month lease signed before end of 2026 is the most rational choice. Those who need prestige will opt for a BMW i4 or i5. And if the budget is tight, the BYD Dolphin proves you can drive electric from €350/month. Do not postpone to 2027 — every year of delay costs money.