What is proxy bidding?
Proxy bidding lets a bidder name their maximum once and have the platform bid for them — raising just enough to stay in front, never more than they authorized.
Proxy bidding — also called automatic or maximum bidding — is a mechanism that lets a bidder enter the most they are willing to pay for a lot, then steps back and lets the auction system do the work. Instead of returning to outbid a rival manually, the bidder authorizes the platform to bid on their behalf in standard increments, up to the ceiling they set.
The key detail is that a proxy bid raises only as far as it needs to. Suppose a lot opens at $1,000 with $100 increments. You set a maximum of $5,000. Another bidder enters $3,200. The platform places your bid at $3,300 — one increment above them — and there it stays. You never paid your $5,000 ceiling because nobody forced the price that high. Proxy bidding protects the bidder from emotional overbidding while still keeping them competitive.
Auction houses use proxy bidding in timed and online auctions where bidders cannot sit at the screen for the full run. It keeps casual buyers engaged, keeps the bidding honest against the reserve and increment table, and — paired with anti-snipe extensions — prevents last-second sniping from cheating a genuine high bidder out of a lot.
The mechanics behind a proxy bid.
One number, hands-off
The bidder enters a single maximum. The platform handles every counter-bid up to that ceiling without them watching the clock.
Pay the increment, not the max
The system raises a proxy bid only enough to beat the next competing bid, so a high maximum rarely becomes the price paid.
Ties favor the earlier bid
When two maximums meet, the bidder who placed their proxy first usually holds the lead — recording order matters.
Works with reserves and increments
Proxy bidding respects the lot reserve, the bid increment table, and any anti-snipe extension rules already configured on the auction.
Frequently asked questions
What is proxy bidding?+
Proxy bidding, sometimes called automatic or maximum bidding, is a feature that lets a bidder enter the highest price they are willing to pay. The auction platform then bids on their behalf, increasing their bid by the minimum increment each time someone outbids them, but never going above the maximum they set.
Will I always pay my maximum bid?+
No. The platform only raises your bid by enough to stay ahead of the next-highest competing bid. If you set a maximum of $5,000 but the next bidder stops at $3,200, you win at one increment above $3,200 — not at $5,000. You pay your maximum only when another bidder pushes the price right up to it.
What happens if two bidders set the same maximum?+
When two proxy maximums are identical, most platforms award the lead to whichever bid was entered first. The second bidder is shown as outbid at that price and must raise their maximum to take the lead, which is why placing a proxy early can be an advantage.
How does Unovance support proxy bidding?+
Proxy bidding is built into every Unovance auction. It honors your reserve and increment table, plays nicely with anti-snipe time extensions on timed lots, and runs on your own branded platform — so the bidder data and the buyer relationship stay yours, not a marketplace's.
Run auctions where the bidding stays fair — and the bidders stay yours.
Unovance gives auctioneers proxy bidding, 22 formats, and full ownership of their brand and buyer data. Let's walk through it.