Chrome extension · free
A car’s true cost, directly on the listing.
On AutoScout24 and 2ememain, the extension shows the true monthly cost under Belgian tax rules 2026 — and saves it to your account in one click.
Free account required · no bank card · AutoScout24, 2ememain, 2dehands
What it does
Three things, done well.
The same calculation as the site
The Belgian tax engine runs in your browser: registration tax, road tax, benefit in kind, NSSO contribution and deductibility from the official tables, never estimated by AI.
A badge on every listing in the list
On AutoScout24 results pages, every card shows “≈ €X/month · true cost” with your account’s profile. You can finally sort by what matters.
Saved to your account in one click
A Save button on the badge and in the panel: the vehicle joins your vehicles — or the client file of your choice with the Firm plan.
Supported sites
Where you already search.
The extension only loads on these domains. On an AutoScout24 results page, the badge appears on every card.
AutoScout24
autoscout24.be, .lu, .fr, .nl, .de, .com
Listing List2ememain
2ememain.be
Listing2dehands
2dehands.be
Listing
Installation
Two minutes, no more.
Add the extension from the Chrome Web Store, sign in to AutoCalcul, open a listing.
- 01
Add to Chrome
From the Chrome Web Store, one click. The settings page opens.
- 02
Sign in
With your AutoCalcul account (Free included). Choose your assumptions profile.
- 03
Open a listing
The “True cost” button appears at the bottom right; on a list, the badge on every card.
Extension privacy policy · Testers: manual installation is possible from the repository (“Load unpacked” with extension/dist).
Questions about the extension
What data does the extension read?
Only the content of the open listing (or of the cards on the results page) on the supported sites: make, model, price, year, mileage, engine. Nothing is read on other sites; the extension is not loaded there. No browsing data is collected.
Why is an account required?
The calculation depends on your assumptions (region, status, mileage, duration): these are the profiles of your AutoCalcul account. The Free account is enough, with no bank card, and vehicles are saved to that account.
What permissions does it ask for?
“storage” to remember your settings, and access to the AutoScout24, 2ememain and 2dehands domains (to read the listing) as well as to autocalcul.be (for your profiles and saving). No other permission.
Does the extension use AI?
Only at your request, to read an incomplete listing or estimate a missing field, within the AI quota of your plan. The tax calculation itself is always deterministic.
Is it free?
Yes. The extension is free and works with the Free account. The Pro and Firm plans bring more vehicles, profiles and AI analyses, exactly as on the site.
The true cost on every listing, from your next search.
Free · free account required · no bank card