Calculate your 2026 bijtelling — net per month, including the 60-month lock-in
Work out what private use of a company car costs you net per month: the rate per drivetrain and registration year (2021 to 2026), the reduced BEV rate up to the cap — 18% up to € 30,000 for a 2026 registration — your employee contribution and your marginal Box 1 rate or your actual marginal burden — including the full 60-month projection from the registration month.
Who it’s for
What the tool does
Why the month of registration counts for five years
The rate that applies at first registration is locked in for sixty months. An electric car registered in June 2026 keeps the 2026 regime through May 2031: 18% on the first € 30,000 of list price and 22% on the remainder. That lock-in is exactly why a calculation per month and per calendar year is more useful than a single annual figure — the first and last years are almost always partial ones.
The projection holds the 2026 rate, your salary and a single marginal rate constant across the whole term; it is a working-out of the locked-in situation, not a forecast of future tax rates. The 2027 comparison runs on the indicative percentages from the source (20% up to € 30,000, 22% above) and is labelled as such. Every report states the tool version and the dataset vintage the percentages come from, so the calculation stays exactly reproducible later.