In UK timed online auctions, the “10-minute rule” and “3-minute rule” almost always describe extended bidding: if someone bids in the final 10 (or 3) minutes of a lot, that lot’s closing time is pushed back so other bidders can respond. The window is set by the platform or auction house, so it differs from sale to sale.
What is extended bidding in a timed auction?
A timed auction has no auctioneer calling the lots. Each lot is open for bids over a set period and closes at a scheduled time, and the highest bid at the close wins, provided any reserve has been met. Without a safeguard, that format rewards “sniping”: waiting until the last seconds and bidding when nobody has time to reply.
Extended bidding (also called a soft close, auto-extend or an anti-sniping rule) removes that advantage. If a bid arrives inside a closing window, the clock on that lot is extended. Bidding only finishes when a full window passes with no new bids, which is closer to how a live auctioneer behaves: the hammer does not fall while people are still bidding.
The rule is written into the platforms’ own terms. The-saleroom’s bidder terms and conditions prohibit sniping and state that “any attempt at bid sniping will automatically extend the relevant auction time”. Easylive Auction’s FAQ says that “to avoid bid sniping, last second bids will extend the closing time of the lot by another 5 minutes”. BidSpirit’s FAQ says that when a bid is placed a few seconds before a lot closes, “the system adds some time for this lot in order to provide other bidders the opportunity to place higher bids”.
What is the 10-minute rule?
When UK bidders talk about a “10-minute rule”, they usually mean a timed sale where a bid in the last 10 minutes of a lot extends that lot. Two published examples:
- Tennants (Leyburn, North Yorkshire). Its guide to bidding in timed online auctions says: “The extension on this auction is set to 10 mins. Therefore, if you bid with 3mins 30secs to go, the timer on that lot will extend to 13 mins 30 secs.” In that example the 10 minutes are added to the time that was left.
- Burstow & Hewett (Battle, East Sussex). Its guide to timed auctions, dated 25 September 2023, says its timed sales are held through the-saleroom and that, typically on that platform, a bid placed in the final 10 minutes extends the closing time by 10 minutes.
Note the difference in mechanics. Some systems add the extension to the time remaining (as in the Tennants example); others reset the clock so that the window starts again. Either way, the practical effect is the same: a late bid buys everyone else time to reply.
The-saleroom’s own FAQ describes a shorter default, saying that if a bid is placed in the last two minutes of the defined time period, the period is extended by two minutes. Because houses on the same platform publish different windows, treat the 10 minutes as one common setting rather than a platform-wide rule, and check the sale you are in.
The phrase has unrelated meanings outside auctions. The best known in the UK is the House of Commons “Ten Minute Rule” procedure for introducing a bill, which has nothing to do with bidding. We found no UK auction regulation, trade-body rule or law called the “10-minute rule”: it is a description of a sale setting, not a legal requirement.
What is the 3-minute rule?
The 3-minute rule is the same idea with a three-minute window. John Pye Auctions, which sells commercial, returned and surplus stock, describes it on its bidding basics page: “If someone places a bid within the final three minutes of an auction, the timer automatically extends by another three minutes.”
Three minutes is not a standard. CARS, a UK car-auction comparison site, puts it plainly in its explainer on the 3-minute rule: “Three minutes is simply one platform’s chosen window — others use one, two or five.” The same explainer notes that these timer rules belong to timed online sales; in a live room the auctioneer decides when to close each lot.
So if you have heard of a “3-minute rule” in connection with a particular sale, it almost certainly refers to that seller’s extension window. We found no evidence of a UK-wide auction rule by that name.
How do Easylive, the-saleroom and BidSpirit handle extensions?
These are the three bidding platforms most UK sales on Auction Eagle come through. Their published descriptions, checked on 17 October 2026:
| Platform | What the platform says | Can the house change it? |
|---|---|---|
| Easylive Auction | “Once the auction starts to close, bidding will stop on lots in 30 second intervals. To avoid bid sniping, last second bids will extend the closing time of the lot by another 5 minutes.” (FAQ) | Not stated in the FAQ. Check the sale’s “Auction Info”. |
| the-saleroom | FAQ: a bid in the last two minutes extends the period by two minutes. Bidder terms: any attempt at sniping “will automatically extend the relevant auction time”. (FAQ, terms) | Yes in practice: houses on the platform publish their own windows, such as 10 minutes. |
| BidSpirit | Each lot is shown for “a period of time which is decided by the auction house”; if a bid comes a few seconds before a lot closes, “the system adds some time for this lot”. (FAQ) | The lot period is set by the house; the length of the extension is not stated. |
An auction house’s own terms for a sale take precedence over general platform help pages, so the number that matters is the one shown on the sale or lot page.
Why do lots close out of order?
Most timed sales close lots in a staggered sequence (Easylive describes 30-second intervals), but extensions apply to each lot separately. A lot with a bidding war can keep extending while the lots after it close on schedule. Tennants warns in its guide that this “does mean that the lots may not close in the order shown in the catalogue. The closing times are dependent on how much bidding activity there is.”
BidSpirit describes a slightly different format for its timed (it calls them “automatic”) auctions: the auction starts at a set time and “the system automatically displays each lot according to the order in the catalog”, with each lot open for a period chosen by the house. Either way, keep an eye on the individual lot timer rather than the catalogue position.
How should you bid in a timed auction?
- Find the extension rule first. Look in the sale’s terms or “important information” for the closing interval and extension window. If it is not stated, ask the auction house.
- Register early. Approval is not always instant. The-saleroom notes that it can take time for the auctioneer to approve a registration, and BidSpirit says approval usually takes 24 hours.
- Decide your maximum, including costs. Your bid is the hammer price only. Buyer’s premium, VAT on the premium and any online bidding surcharge come on top; see our guide to auction fees.
- Use a maximum bid if the platform offers one. The system bids for you up to your limit, so you are not relying on your connection in the closing seconds.
- Do not count on a last-second snipe. With extended bidding, a late bid simply restarts the contest, and the-saleroom’s bidder terms prohibit sniping outright.
- Watch for reserves. BidSpirit explains that a hidden reserve is “a hidden lowest price under which a seller usually does not allow the item to be sold”; the top bid can still lose if it is below the reserve.
How is a timed auction different from a live one?
The-saleroom describes live auctions as “traditional room-based auctions that are broadcast” online, while “timed auctions take place without an auctioneer calling the sale”. In a live sale the auctioneer closes each lot when bidding stops, and online bidders compete in real time with the room, the phone lines and commission bids; there is no timer to extend. In a timed sale the software runs the clock and the extension rule does the auctioneer’s job. Our blog explains the choice in more detail in Timed auction vs live auction.
Auction Eagle labels sales as live or timed where the platform tells us. To find timed sales closing soon, browse all upcoming auctions or auctions this week, or start from a category such as collectables or jewellery. For a step-by-step walkthrough, read how to buy at a UK auction, and for the differences between the platforms, see UK online auction sites compared.
Sources
- Easylive Auction, Frequently asked questions (auction types, timed closing). Checked 17 October 2026.
- the-saleroom, FAQs and Bidder Terms and Conditions, clause 3.4. Checked 17 October 2026.
- BidSpirit, FAQ (auction types, registration, reserve price). Checked 17 October 2026.
- Tennants, Timed online auctions – how to bid online (PDF). Checked 17 October 2026.
- Burstow & Hewett, How do I bid in a timed auction? (25 September 2023). Checked 17 October 2026.
- John Pye Auctions, Bidding basics. Checked 17 October 2026.
- CARS, What is the 3-minute rule at auction? Checked 17 October 2026.
Frequently asked questions
What is the 10-minute rule in a timed auction?
It usually means a bid placed in the last 10 minutes of a lot extends that lot's closing time, so other bidders can respond. Tennants, for example, sets a 10-minute extension on its timed sales. The window is chosen by the platform or auction house, so check each sale's terms.
What is the 3-minute rule at auction?
It is the same anti-sniping idea with a three-minute window. John Pye Auctions says that if someone bids within the final three minutes, the timer extends by another three minutes. Other platforms use different windows, such as two or five minutes.
Can you win a timed auction by bidding in the last second?
Usually not outright. Where extended bidding is used, a late bid triggers an extension, giving other bidders time to reply. The-saleroom's bidder terms say any attempt at bid sniping will automatically extend the relevant auction time.
Why do lots in a timed auction close out of order?
Extensions apply lot by lot. A lot that keeps attracting late bids stays open while quieter lots close on schedule, so lots can finish out of catalogue order. Tennants warns bidders about this in its guide to timed auctions.
How long is the extension on Easylive Auction?
Easylive Auction's FAQ says last-second bids in a timed sale extend the closing time of the lot by another five minutes, and that once the auction starts to close, bidding stops on lots at 30-second intervals.