An absolute auction (also called a “no-reserve auction”) is a sale where there is no minimum price. Whatever the highest bid is at the close of the auction wins the lot — even if it’s a single dollar. The seller has committed to selling, regardless of the final number.
Absolute auctions create the strongest urgency because bidders know the lot will sell. They tend to draw bigger crowds and produce more competitive bidding than reserve auctions. The trade-off is risk: if turnout is light, the seller may take a serious haircut. Auctioneers often use the word “absolute” explicitly in marketing because it dramatically affects bidder behavior — auction-industry research has shown a 20–30% lift in attendance for advertised absolute sales.
Most US states have specific advertising rules for absolute auctions. The word “absolute” or “no reserve” must appear in promotional materials, and a sale advertised as absolute that turns out to have a hidden reserve can expose the seller and auctioneer to legal liability. Common contexts: dispersal sales, dealer liquidations, court-ordered foreclosures, government surplus, and estate auctions where heirs want a guaranteed close. Charity galas occasionally use the format on a single “hero” lot to drive event excitement.