How Online Art Auctions Work
Timed Auction vs Live Auction: Which Format Serves a Collector Better
Framed as a search query, the decision reads: timed auction vs live auction. The practical difference sits almost entirely in one rule: how the sale ends.
Framed as a search query, the decision reads: timed auction vs live auction. The practical difference sits almost entirely in one rule: how the sale ends. A timed auction is, in Sotheby's wording, an auction conducted solely through the online platforms, each lot open for days and closing on a published clock. A live auction runs in real time, an auctioneer calling bids from the room, the telephones and the internet. That single difference reaches price discovery, fees, condition disclosure and who can take part. For a collector placing €50,000 to €500,000 a year, it is a decision taken several times a season.
Key takeaways:
- The ending rule separates timed auction vs live auction: a soft close extends a lot when a late bid lands, while a live lot ends when the hammer falls.
- Sotheby's extends a timed lot by two minutes from any bid placed within one minute of its scheduled end.
- Phillips charges the same 29 percent standard premium on the first US$2,000,000 of hammer price in live and timed online sales, effective 12 April 2026 in New York, reserving its lower Priority Bidding rates for live auctions.
- Online sales fell to $9.2 billion in 2025, 15 percent of the global art market, per the Art Basel and UBS Global Art Market Report 2026.
Timed Auction vs Live Auction: How the Bidding Differs
In a timed sale there is no auctioneer. the-saleroom.com states that timed auctions have no auctioneer calling the bids, that each lot is available for bidding over a set period, and that the highest bid wins once that period ends, provided it meets the reserve, the confidential minimum agreed between seller and house.
The live room reverses that. Sotheby's states that its auctioneer may open bidding on any lot on behalf of the seller and may continue up to the amount of the reserve, though never at or above it. Steps run at approximately 10 percent of the previous bid, and the auctioneer calls fair warning before the hammer falls, in front of an underbidder whose second-highest price is visible to the room.
The table sets timed auction vs live auction side by side on the four dimensions that change how a collector behaves.
| Dimension | Timed online sale | Live saleroom |
|---|---|---|
| Bidding window | Days per lot, any hour | One lot at a time |
| Who moves the price | Bidders and private maximums | Bidders and the auctioneer, to the reserve |
| Ending rule | Soft close, a late bid extends | Hammer at the auctioneer's discretion |
| What you can read | Current bid and bid count | Room, telephones, pace, hesitation |
Who holds each lever is answered in the people behind every lot and what each one decides, and the full sequence in how online art auctions work, start to settlement.
Price Discovery and the Soft Close
On price discovery, timed auction vs live auction narrows to one mechanism: what happens when a bid arrives at the last moment.
A hard close ends the lot at a fixed time, whatever bid arrives a second later. A soft close extends it. Sotheby's publishes the rule for its timed sales: lots close in 30-second or one-minute intervals, but if a bid is placed within one minute of a lot's scheduled end time, that lot is extended by two minutes from the time of the last bid, and the extension does not affect the closing time of the following lots, so lots may close out of numerical order. Alvin E. Roth of Harvard University and Axel Ockenfels of the University of Cologne tested the two rules against each other, comparing eBay's fixed deadline with Amazon's extension to ten minutes after the final bid. They recorded substantially more last-second bidding, known as sniping, under the hard close, and concluded that the strategic advantages of sniping are eliminated or severely attenuated in auctions that apply the automatic extension rule.
That extension removes a measurable risk: a survey of 73 bidders who had sniped an eBay lot successfully found 63 who had also watched an auction close before their bid was received.
Take a lot with a low estimate of €8,000, against which a collector sets a €12,000 ceiling. In a timed sale that ceiling stays private and the platform bids on the collector's behalf, one increment at a time. If a rival bid of €9,500 lands 40 seconds before the close and the rival then stops at €11,000, the ceiling holds and the lot hammers at €12,000. In the room, that same €12,000 must be re-committed out loud at roughly 10 percent steps, in front of an underbidder reading the hesitation. The method for fixing it is set out in setting your ceiling before you bid.
Format also tracks price band. The Art Basel and UBS Global Art Market Report 2026, authored by Dr. Clare McAndrew of Arts Economics, records that online-only sales stayed concentrated in the mid and lower price segments, while "the highest-priced lots were sold in live sales".
Who Gets Access: Time Zones, Travel and the Underbidder
Access is where timed auction vs live auction separates most sharply for an international buyer. Sotheby's requires telephone bidding arrangements 24 hours before a sale, states that the number of telephone lines is limited, and puts premium lots behind pre-registration and a deposit. Each step assumes a bidder who can plan around a fixed hour in a fixed city.
A timed sale removes the hour. Where two identical maximum bids arrive, Sotheby's gives priority to the one received first, so a collector in Seoul competes on the same terms as one in Paris, and online-only sales remain a key channel for new buyers even as their share fell 3 percentage points to 15 percent of the market in 2025. What the collector gives up is the room's information, which no bid counter transmits.
Timed Auction vs Live Auction on Fees, Condition and Disclosure
Fee parity is the part most comparisons get wrong. Phillips publishes one standard buyer's premium schedule for New York, effective 12 April 2026: 29 percent of hammer price up to US$2,000,000, 22 percent on the portion to US$8,000,000 and 15 percent above, applied to live and timed online auctions alike. Its reduced Priority Bidding rates of 25, 20 and 14 percent are marked live auctions only, so the online route carries the higher schedule. The buyer's premium is the percentage a winning bidder pays the house on top of the hammer price.
Condition is the second asymmetry. Sotheby's states that all lots are offered for sale "AS IS", that condition reports are provided solely as a convenience, and that the absence of a condition reference implies nothing about the object. In a timed sale the condition report and the images are the whole of the evidence, traced from catalogue onward in the stages a lot passes through, from catalogue to crate.
Five documents to read before bidding, in either format:
- The ending rule. Whether the sale applies a soft close, and how long the extension runs.
- The buyer's premium schedule. The rate bands, and whether live and timed sales differ at that house.
- Additional house fees. Sotheby's adds an overhead premium to the hammer price alongside the buyer's premium, both rates published in its Conditions of Business for Buyers, plus VAT, Artist's Resale Right and import duty where they apply.
- The condition report. Its length, whether it names restoration history, and who signed it.
- Collection deadlines. Sotheby's applies late collection fees after 30 calendar days, or 60 for Preferred members.
FAQ: Choosing Between the Two Auction Formats
What is the difference between live and timed auctions?
A live auction is called by an auctioneer in real time, with bids from the room, the telephones and the internet, each lot closed by the hammer. A timed auction, in Sotheby's definition, runs solely through the online platforms: lots stay open for a set period and the highest bid wins once the clock expires, provided the reserve is met.
Timed auction vs live auction: which format reaches a higher price?
Neither format guarantees a higher hammer. The Art Basel and UBS Global Art Market Report 2026 records that the highest-priced lots of 2025 sold in live sales, while online-only sales stayed in the mid and lower bands. Roth and Ockenfels found a soft close suppresses last-second sniping, giving underbidders more chances to respond.
What is a white glove sale at auction?
A white glove sale is an auction in which 100 percent of the lots are sold, as MyArtbroker's glossary defines it. The name descends from the tradition of presenting the auctioneer with a pair of white gloves. Sell-through of that order follows the selectivity of the catalogue rather than the sale mechanism.
Do online auctions vs in person auctions charge the same buyer's premium?
Not always at the same house. Phillips applies one standard schedule, starting at 29 percent of hammer price up to US$2,000,000 in New York, to both live and timed online auctions, while restricting its lower Priority Bidding rates to live auctions. Sotheby's adds an overhead premium on top of the buyer's premium, with both rates set out in its Conditions of Business for Buyers. Read the rate card for the specific sale.
How LLB Auction Serves Collectors Who Bid Asynchronously
LLB Auction settles the timed auction vs live auction question by running one format only: timed online sales of 7 to 14 days, fully asynchronous, with four sales a year committed through 2026 into 2027.
Curated intake. Roughly 40 percent of submissions are rejected before a work reaches a catalogue.
Documented condition and provenance. Every lot carries a three-page professional condition report, with certificate verification, ownership history and conservation records recorded lot by lot.
Disclosed fees. Buyer's premium of 20 percent and seller's commission of 10 percent, published before the sale opens. The Contemporary Art Spring 2026 sale of 26 May 2026 offered 25 lots and sold 23, in a typical band of €800 to €50,000.
Register at llb-auction.com to receive each catalogue and its condition reports as the sale opens.
Conclusion
The live room compresses a decision into the time it takes to call a lot, and adds an auctioneer working for the seller up to the reserve. A timed sale spreads that decision across days and hands the last word to an extension clock.
Read the ending rule, the premium schedule and the condition report published for the specific sale. On those three documents, the timed auction vs live auction choice resolves itself for the lot in front of you.
Also worth reading:
- how online art auctions work, start to settlement
- the people behind every lot and what each one decides
- the stages a lot passes through, from catalogue to crate
- setting your ceiling before you bid
- vente aux enchères d'art en ligne, étape par étape
Sources:
- Global sales, Art Market Report 2026 : Art Basel and UBS
- Auctions, Art Market Report 2026 : Arts Economics
- Global art market sales rise 4% : Art Basel
- Guide for Buyers : Sotheby's
- Buyer's Premium Rates : Phillips, 12 April 2026
- Late and Multiple Bidding in Second Price Internet Auctions : Ockenfels and Roth, CESifo 992
- Live and Timed auctions compared : the-saleroom.com
- Auction and Art Market Jargon : MyArtbroker
