Get help with AuctionCalc
Answers, contact details and troubleshooting for the calculator, your account, and the browser extension.
Fastest way to an answer
Most questions are already answered on the FAQ. If yours is not, use Contact Us and we will reply by email, usually within one business day.
Support is provided in English, for the United States and Canada.
Chrome extension
AuctionCalc — Max Bid Side Panel
Getting started
Install the extension from the Chrome Web Store, open a lot on a supported auction site, then click the AuctionCalc icon to open the side panel. On the sites listed below the vehicle, damage, location and current bid are read from the page automatically.
Where it reads without being asked
On these four the panel reads the lot the moment you open it, with no extra click:
- Copart — United States and Canada
- IAAI — United States and Canada
- Manheim — United States
- OPENLANE — Canada
Everywhere else
Open the side panel on any other supported listing and it reads that page too. Because clicking the AuctionCalc icon is what opens the panel, that single click is also what grants the extension permission to read the page you are on — so there is nothing extra to allow and no prompt to answer.
Auction sites: Carvana ADESA, America’s Auto Auction, GSA Auctions, GovDeals, AutoNation Auto Auctions, eBay Motors, Mecum, Barrett-Jackson, Bring a Trailer, Cars & Bids, ProgiPix, EBlock, A Better Bid, Abrams, Stark, Collector Car Canada, The Great Northern Auction, North Toronto Auction, First Choice Auto Salvage, and Auction Utopia — along with every other auction running on HiBid.
Retail sites: CarGurus, AutoTrader, Cars.com, CarMax, Carvana, TrueCar, Driveway, AutoNation, CarsDirect, Kelley Blue Book, Kijiji, Clutch, AutoHebdo, AutoTempest, Carpages, Used.ca, Canada Drives, Craigslist and Facebook Marketplace.
Open a single listing rather than a search results grid — the reader needs one vehicle to look at.
Auction houses the calculator prices
You can pick your auction house in the panel even when the extension cannot read that site’s pages. Enter the lot figures yourself and the correct fee structure is applied.
- United States: Manheim, Copart, IAAI, Carvana ADESA, America’s Auto Auction
- Canada: OPENLANE, Copart, IAAI, ProgiPix
The full calculator on this site covers more houses again — see the US calculator and the Canadian calculator.
The free dealer price calculator
On CarGurus, AutoTrader and Cars.com (United States and Canada), the extension works out what a retail listing really costs out the door: the asking price plus the dealer’s documentation fee, sales tax, title and registration, less your trade-in, with monthly payment and total interest if you finance it.
This calculator is free and requires no AuctionCalc account. Install the extension, open a listing, and use it.
The panel is empty, or the lot did not load
Three things to check, in order:
- You are on a single lot page, not a search results grid.
- The page has finished loading — reload it, then reopen the panel.
- For Manheim, you are signed in to Manheim. Its lot pages are dealer-only.
If it still will not read, the auction site has probably changed its page layout. Tell us the site and the lot number and we will update the reader.
Do I need an account?
It depends which half you are using.
- The dealer price calculator is free. No account, no sign-in, no trial. Open a retail listing and use it.
- The auction max-bid calculator is for Pro members and above. It runs the paid fee engine against each platform’s real schedule, so it sits behind your plan. See plans.
Signing in from the extension
The extension uses the same account as this website. If it will not connect, sign in at auctioncalc.co/login first, then reopen the panel.
Reporting a problem with the extension
Please include the auction or retail site, the lot or listing number, what you expected, and what you saw. A screenshot of the side panel helps a great deal. Send it through Contact Us.
Other browsers
Extensions for Microsoft Edge, Mozilla Firefox and Apple Safari are in development. They are not available yet and no release date is committed.
Account and billing
Manage your plan, payment method and invoices from your account dashboard. For refunds, see the Refund Policy. To cancel, use the link inside the membership card on your account page.
I cannot sign in
Use Reset your password and follow the link we email you. If nothing arrives within a few minutes, check your spam folder, then contact us.
Fees, accuracy and limits
Fee schedules are reproduced from each platform’s published rates and are not guaranteed to be current. Manheim fees are editable because Manheim does not publish a public schedule — enter the rates your account actually receives. Sales tax is estimated using each state’s or province’s headline rate; the rate that applies to you depends on where the vehicle is registered. Always confirm current fees and taxes with the platform and the branch before you bid.
Privacy and data
See the Privacy Policy. Section 14 covers the browser extension specifically — what it reads, what it stores, and what it sends.
Contact
Use the contact form. It reaches us directly and is the quickest route to a person.