Calculating the cost per kWh of home charging
How much does your employer pay per kWh for home charging? Discover how the CREG rate works, how it differs from your own energy contract, and how to calculate your monthly reimbursement.
What does home charging cost per kWh?
There is one official reference point for reimbursement of charging costs by your employer: the CREG rate. CREG (the Belgian Commission for Electricity and Gas Regulation) sets a maximum reimbursement rate every quarter, expressed in cents per kWh, per region.
This rate is not just an estimate — it is the legal basis on which tax-free reimbursement by the employer is permitted. You don't need to work out what your own energy contract costs: for your reimbursement, only the CREG rate for your region and the quarter in which you charged applies.
Q1 2026 — example rates (historical)
Flanders
Brussels
Wallonia
The rate differs per region because grid costs (managed by Fluvius, Sibelga and ORES/RESA respectively) and regional levies vary. For a more in-depth explanation of how the rate is determined, read the guide on how the CREG rate is calculated, or see the full regional comparison for a detailed overview of the differences between Flanders, Brussels and Wallonia.
How to calculate your monthly charging cost
The calculation is simple. Each month, add up the kWh you charged at home for your company car, and multiply that by the CREG rate for the quarter in which those sessions took place.
Step-by-step approach
- Determine your region — where do you live and charge? Flanders, the Brussels-Capital Region or Wallonia. Your home address is what counts, not your workplace.
- Look up the applicable quarterly rate for your region via /creg-tarief. Check this separately for each quarter, since the rate changes four times a year.
- Export your charging data from your charging station app (Smappee, Alfen, Easee, Wallbox, etc.) as a CSV file with date and kWh per session.
- Upload the CSV file into the calculator on laadkostencalculator.be. The tool automatically links the correct quarterly rates and generates an overview and PDF report for your accountant or employer.
Besides the CREG reimbursement itself, you can also lower your monthly charging cost by charging smarter. Seven practical ways to do so are covered in our guide saving on home charging costs.
CREG rate vs. your actual electricity price
The CREG rate and what you actually pay your energy supplier are two different things. It's important to understand this distinction.
- Legally set by CREG
- Published per quarter
- Differs per region (FL / BR / WA)
- Basis for tax-free employer reimbursement
- Check the current rates
- Determined by your energy supplier
- Varies by contract and plan
- Can be higher or lower than the CREG rate
- Not directly relevant to your reimbursement claim
- Your actual all-in electricity price in Flanders is typically between €0.23 and €0.30 per kWh, including grid costs and 21% VAT (as of July 2026, source: Selectra based on the VREG V-test). Your exact price depends on your contract (fixed, variable or dynamic) — check with your supplier or the VREG V-test.
What does this mean in practice?
Your employer may reimburse you up to the CREG rate without social security contributions or tax. If your employer reimburses more than the CREG rate, the surplus is in principle a taxable benefit in kind.
Does your employer reimburse less than the CREG rate? That's not correct — the CREG reimbursement is legally mandatory for company cars with a home charging station.
Whether your actual electricity bill is higher or lower than the CREG rate is not relevant for the reimbursement: the reimbursement is always based on the CREG rate, regardless of what your energy contract costs.
Monthly calculation example
Suppose you live in Flanders and charged a total of 250 kWh at home in November 2025 (Q4 2025) for your electric company car. The CREG rate for Flanders in Q4 2025 was 30.70 cents/kWh.
Calculation
| kWh charged (example input) | 250 kWh |
| CREG rate Q4 2025 — Flanders | 30.70 cents/kWh |
| Reimbursement (250 × 0.3070) | € 76.75 |
The same volume (250 kWh) would, in Q4 2025, result in 250 × 0.3356 = € 83.90 for Brussels and 250 × 0.3457 = € 86.43 for Wallonia.
Note that the exact amount varies quarter by quarter. For Q1 2026 (Flanders), the same volume would yield 250 × 0.3132 = € 78.30.
Frequently asked questions
For reimbursement by your employer, the official CREG rate for your region and quarter applies. This rate is re-set every quarter and differs per region (Flanders, Brussels, Wallonia).
The current rate for your region and quarter can be found at laadkostencalculator.be/creg-tarief. What you actually pay your energy supplier may be higher or lower, but is not relevant for calculating your reimbursement.
No. The employer is required to reimburse at least the CREG rate for kWh charged at home for a company car. Reimbursement up to this rate is tax-free for the employee. A higher reimbursement is in principle taxable as a benefit in kind.
Have doubts about your employer's reimbursement? A clear PDF report — generated via the calculator — gives you the documentation needed to raise the issue.
The CREG rate is revised every quarter — in January, April, July and October. The rate is adjusted based on current energy market prices. Always check the rate for the quarter in which you charged, not the most recent quarter. The calculator automatically links the correct rate to the date of each charging session.
Export the charging history from your charging station's app. Most brands offer a CSV export:
- Smappee — via the Smappee app or web portal
- Alfen — via the Eve Connect app
- Easee — via the Easee app
- Wallbox — via the myWallbox app
Upload your CSV file into the LaadkostenCalculator for automatic processing and a professional PDF report ready for your employer or accountant.
Figures checked on 13 July 2026. Energy prices change regularly — check current rates via the VREG V-test and the CREG dashboard. The current CREG reimbursement rates are always available on our CREG rate page.
Ready to calculate your reimbursement?
Upload your CSV file, choose your region, and get a complete overview per month and quarter — including a PDF report for your employer.
Start the calculationHow to claim EV charging costs as a self-employed person in Belgium
What self-employed individuals in Belgium need to know about claiming charging costs.
As a self-employed professional in Belgium you are entitled to a refund for the electricity you use to charge your company car at home. Using the official quarterly CREG rates, this calculator works out the exact amount from your recorded charging sessions. You can export the result to PDF and forward it to your accountant.
Read more ➜Which CREG tariffs apply in my region?
Find out which CREG rate applies to your region: Brussels, Flanders, or Wallonia.
The CREG publishes maximum reimbursement rates per quarter for charging sessions. These rates vary depending on your region: Flanders, Brussels or Wallonia. Our calculator applies the correct rate automatically to ensure accurate results.
Read more ➜Example EV charging cost invoice (PDF)
Download an an PDF invoice based on your load data.
This tool lets you easily export an overview in PDF format, including date, kWh charged, rate and refund per charging session. Enter your name, address and vehicle details to generate a ready-to-use report for your accountant or tax filing.
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