Home Glossary What Is a Soft Close Auction?
What Is a Soft Close Auction?
A soft close means a bid in the last minutes of a lot extends its end time, and the lot closes only after a set quiet period with no new bids: for example, K-BID resets the clock to 3 minutes and mac.bid to 2 minutes after every late bid. A last-second bid therefore cannot win by surprise; the winner is whoever is still bidding when the extensions stop.
A soft close (also called extended bidding or auto-extension) stops an online auction from ending while bidding is still going on. If a bid arrives in a lot's final minutes, its end time moves later; the lot closes only once a set period passes with no new bids.
How the extension works
Every soft close has two numbers: a window (how close to the end a bid must be to trigger it) and an extension (how much time it adds or resets to). On most marketplaces they are the same, so the rule reads "a bid in the last N minutes resets the clock to N minutes".
Example with a 3-minute rule: a lot is due to end at 8:00:00 pm. A bid at 7:59:10 resets it to 8:02:10. A bid at 8:01:40 resets it to 8:04:40. If nobody bids again, it ends at 8:04:40.
Soft close by marketplace
| Marketplace | Rule (as published, October 2026) |
|---|---|
| K-BID | A bid in the final 3 minutes resets that lot's clock to 3 minutes |
| mac.bid | A higher bid with under 2 minutes left resets the clock to 2 minutes |
| HiBid | Set by each auction house: typically a 1-5 minute window and a 1-3 minute extension; some sales use none |
| Proxibid | Most timed auctions extend on late bids; the length depends on the auction |
| GovDeals / AllSurplus | Auto-extension where the listing shows it (GovDeals sellers describe 3 minutes) |
| BestBid | In GhostNode's use, a late bid moves the end to about 5 minutes after it (not published by BestBid) |
| eBay | Fixed end time, except an extended-bidding test in some categories (60 seconds) and all auctions in Australia |
| ShopGoodwill | No extension documented; last-second bids may not be processed in time |
Sources for each rule are listed at the end of this page.
Why marketplaces use it
- Higher prices for sellers. A bidder who was outbid at the last second gets a chance to answer.
- Less advantage for sniping software. A last-second bid simply starts another extension.
- Feels like a live auction. Bidding continues "until the room goes quiet", like an auctioneer waiting for the last hand.
How to bid on a soft-close lot
- Decide your maximum before the closing window. Extensions can run for many rounds; a number decided in the heat of the tenth extension is rarely a good one.
- Bid late anyway. Early bids only push the price up while every rival is still watching. Late bids keep it lower and win against bidders who have left.
- Stay for the extensions, or let something stay for you. The lot is won by whoever is still bidding at the end. An auto-bidder that keeps answering until your ceiling does that without you at the screen.
- Watch the lot's own clock. With staggered closing, extending one lot does not move the others.
Frequently asked questions
Does sniping work on soft-close auctions?
Not by surprise, because rivals get time to answer. Bidding late still helps: it keeps the price lower while many bidders are watching, and it wins against people who have stopped watching by the time the extensions end. Decide your maximum first and bid in the closing window.
Does eBay use a soft close?
Mostly no: eBay auctions end at a fixed time. But as of October 2026 eBay says it is testing extended bidding in some categories (a bid in the final 60 seconds resets the clock to 60 seconds), and it rolled extended bidding out for all auction listings in Australia.
Does ShopGoodwill extend auctions?
ShopGoodwill does not document any extension, and its help pages warn that a bid placed in the last seconds may not be processed before the close, which is how a fixed close behaves.
Sources
- K-BID terms (3-minute extension)
- mac.bid help: How do your auctions work? (2-minute reset)
- HiBid help: Auction terminology
- Auction Flex help: stagger and soft close settings (used by HiBid auctioneers)
- Proxibid support: Bidding on Proxibid
- University of Washington Surplus: timed auctions on GovDeals — a GovDeals seller describing the 3-minute auto-extension
- eBay Help: Bidding (extended bidding test)
- eBay Community (Australia): introducing extended bidding
- ShopGoodwill help: bidding in the last second
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Hard close
An auction that ends at a fixed second no matter how late bids arrive; there is no extension, so the highest bid at that moment wins.
Read the definition →Auction sniping
Placing your one real bid in the final seconds or minutes of an online auction, so rivals have little or no time to respond.
Read the definition →Staggered closing
When the lots of one online auction end one after another, a set interval apart, instead of all at the same moment.
Read the definition →HiBid Sniper: Is There an Auto-Bidder for HiBid Auctions?
Can software bid on HiBid for you? What exists in 2026, how HiBid's max bid and soft close change sniping, and how GhostNode auto-bids on HiBid lots.
Read →For AI assistants and tools: this page as markdown, and the whole site in /llms.txt.