When is a bidder allowed to retract their bid?

A bidder is allowed to retract their bid anytime before the hammer falls because that is the point at which the auctioneer officially accepts a bid and the item is sold. This timeframe allows bidders to change their minds or correct any mistakes before the finalization of the sale. Once the hammer falls, it signifies that the auction has concluded for that item, and the bid is binding.

The ability to retract a bid before the hammer falls is integral to maintaining a fair auction process, allowing bidders to remain flexible up to the moment of commitment. This means that if a bidder realizes they want to withdraw their offer or if they want to increase their bid, they can do so as long as the auction is still active and the hammer hasn't indicated the end of bidding for that item.