Bid retraction is the cancellation of a bid by either the bidder or the auctioneer. Most live auction terms allow the auctioneer to retract a bid if it was placed in error (mishearing a number, misidentifying a bidder), but bidders generally cannot retract their own bids once acknowledged.
Online platforms vary widely. Some allow bidders to retract within a short window after placing a bid. Others (eBay-style) only permit retractions for clear data-entry errors and require a stated reason. Frequent retractions are a red flag — both for bid manipulation and for shill bidding investigations.
The auctioneer’s right to retract their own acknowledgment exists for fairness. If the auctioneer mis-saw a paddle, mis-heard a number, or accepted a bid from someone who turned out to be unregistered, they can wind back the sale and re-call the lot from the previous valid bid. This power is exercised carefully — frequent retractions destroy bidder trust. On the buyer side, “winner’s remorse” is not grounds for retraction. Once you’ve acknowledged the bid and the hammer falls, you’re on the hook for the purchase price and any premium.