A colleague showed me his payslip last week. The "vehicle BIK" line read EUR 141 gross per month. He's been driving a Tesla Model Y since January. The guy across the hall — same seniority, same salary — drives a company diesel Passat. His BIK: EUR 287. After tax, that's nearly EUR 100 difference every month, and that's before you factor in the diesel driver paying EUR 85 to fill up while the other charges at home for EUR 12 a week.
In 2026, eight out of ten new company cars in Belgium are electric (Renta/Febiac, Q1 2026). The switch has happened. The question is no longer "electric or not" — it's "which model to pick to optimise your package."
How is the BIK for an electric company car calculated in 2026?
The formula is the same as for any company car, but the result structurally favours EVs.
Annual BIK = list price x 6/7 x CO2 rate x age coefficient
For an EV, the CO2 rate drops to the legal floor of 4% (versus 5.5–18% for ICE cars, depending on emissions). The age coefficient starts at 1.00 in year one, then decreases by 6% annually down to 0.70 after five years. The legal minimum BIK is EUR 1,690/year for 2026 income (SPF Finance).
In practice, most company EVs priced between EUR 35,000 and EUR 50,000 land at the minimum. Here's what it looks like:
| Model | List price incl. VAT | Calculated annual BIK | Applied BIK | Monthly tax (50% bracket) |
|---|---|---|---|---|
| MG4 Extended Range | EUR 34,990 | EUR 1,200 | EUR 1,690 | ~EUR 70 |
| Volvo EX30 Extended | EUR 39,100 | EUR 1,340 | EUR 1,690 | ~EUR 70 |
| Tesla Model Y Standard | EUR 39,990 | EUR 1,371 | EUR 1,690 | ~EUR 70 |
| Skoda Enyaq 85 | EUR 49,755 | EUR 1,706 | EUR 1,706 | ~EUR 71 |
| BMW iX1 eDrive20 | EUR 48,750 | EUR 1,671 | EUR 1,690 | ~EUR 70 |
| Tesla Model Y Long Range | EUR 53,990 | EUR 1,851 | EUR 1,851 | ~EUR 77 |
A diesel Passat at EUR 48,000 with 128 g CO2 gives a BIK of roughly EUR 3,500/year — EUR 146 in monthly tax. Over four years: EUR 3,600 more tax compared to the EV. The maths speaks for itself.
What does the employer pay on top of the lease?
Employers have two EV-specific cost lines: the CO2 solidarity contribution and charging reimbursement.
The CO2 contribution for an EV is at the legal minimum: roughly EUR 42/month (indexed, 2026). For a 130 g diesel, the x4 multiplier introduced in January 2026 pushes the bill to EUR 120–170/month. Over 48 months, the employer saves more than EUR 4,000 per vehicle (Acerta, NSSO schedule 2026).
Home charging reimbursement follows the quarterly CREG tariff. In Q2 2026, the tax-free ceiling is approximately EUR 0.36/kWh in Wallonia. For an employee charging 250 kWh/month (roughly 1,500 km), reimbursement reaches EUR 90/month net — free from tax and social security, provided a dedicated meter or smart measurement system is installed on the home charging point.
Which EV for which company car profile?
Not the same model for a sales rep covering the E40 daily and an office worker doing 30 km round-trip in Brussels.
Urban commuter (< 60 km/day, fleet budget < EUR 40,000). The MG4 Extended Range (EUR 34,990) and Volvo EX30 (EUR 39,100) tick every box. BIK at the minimum, real-world range of 350–400 km, 11 kW AC charging enough to top up overnight. The MG4 has the most practical boot in the segment (363 L). The EX30 has the premium badge and Volvo safety (5-star Euro NCAP). Both fly under the fiscal radar.
Motorway commuter (60–150 km/day, fleet budget EUR 40,000–55,000). The Tesla Model Y Standard (EUR 39,990, 534 km WLTP) has become Belgium's fleet benchmark — 11,500 units sold in 2025. The Supercharger network is the most reliable in the country: 250 kW, automatic payment, rarely out of service. The serious alternative is the Skoda Enyaq 85 (EUR 49,755, 586 km WLTP), crowned Corporate Car of the Year 2026. The Enyaq offers a 585 L boot, a more traditional cabin, and the Volkswagen Group dealer network for servicing.
Executive or field rep (> 150 km/day, fleet budget > EUR 55,000). The Tesla Model Y Long Range (EUR 53,990, 600 km WLTP) handles Brussels–Luxembourg–Brussels without stopping to charge. The BMW iX1 eDrive20 (EUR 48,750, 475 km WLTP) targets comfort and status, with a BIK that stays at the minimum. For those who want to stand out, the Volvo EX60 (estimated ~EUR 55,000, 810 km WLTP announced) arrives mid-2026 with the longest range in the segment.
How to optimise charging with a company car?
Three charging circuits, three very different costs.
Home with CREG tariff: the most profitable scenario. You pay your domestic electricity rate (EUR 0.25–0.30/kWh on average), and your employer reimburses up to the CREG ceiling (~EUR 0.36/kWh in Q2 2026). The difference is a net gain. Over 15,000 km/year (roughly 2,500 kWh), CREG reimbursement covers EUR 900/year — tax-free.
Workplace charger: free for the employee in most fleet policies. For the employer, the electricity cost is 100% deductible as a business expense. This is the second-best scenario.
Public charging: the last resort. On AC (7–22 kW), expect EUR 0.45–0.65/kWh. On DC fast charging (50–350 kW), it's EUR 0.69–1.00+/kWh depending on the network (Ionity, Fastned, TotalEnergies). A fleet charging card (Plugsurfing, NewMotion, Shell Recharge) often negotiates 10–15% below the public tariff.
What your employer gains by switching the fleet to EVs
The fleet TCO of an EV is now lower than an ICE vehicle in Belgium, all charges included.
| Item (48 months, 80,000 km) | EV company car (Model Y Std) | Diesel company car (Passat 2.0 TDI) |
|---|---|---|
| Monthly lease payment | ~EUR 520 | ~EUR 480 |
| Fuel/electricity | ~EUR 2,400 | ~EUR 8,000 |
| CO2 solidarity contribution | ~EUR 2,016 | ~EUR 6,720 |
| Corporate tax deductibility | 100% | 0% (new contract 2026) |
| Maintenance (tyres included) | ~EUR 2,400 | ~EUR 4,200 |
| Total TCO 48 months | ~EUR 31,800 | ~EUR 42,920 |
The EUR 11,000 gap over 4 years per vehicle comes from three levers: 100% deductibility, fuel costs three times lower, and the CO2 contribution divided by four. For a fleet of 20 vehicles, that's EUR 220,000 saved over one lease cycle.
Checklist before signing your fleet contract
Before confirming your choice with the fleet manager, verify five points.
Your actual annual mileage — not last contract's figure. On the E411 in winter, real-world range drops 20–25%. If you drive 200 km/day during cold months, a 300 km WLTP model will be tight. Use a WLTP ÷ 1.3 ratio to estimate real winter range.
Your home charging access — this is the most underestimated factor. Without a home charger, public charging costs erode the financial advantage. Ask your employer whether they fund wallbox installation (100% deductible for the company, increasingly common in modern car policies).
Your region's CREG tariff — check whether your employer's car policy includes reimbursement. Some companies haven't integrated it yet.
The exact list price including options — every option increases BIK. A winter pack at EUR 1,500 adds EUR 3 in monthly tax. Not dramatic, but worth knowing.
The battery warranty — 8 years or 160,000 km is the standard. Tesla, Hyundai and Kia offer 8 years / 200,000 km. If your fleet contract is 48 months, the battery will still be under warranty at vehicle return.