A catalogue estimate is not the final amount a buyer pays, nor is the hammer price necessarily the sum a seller receives. So, who pays auction house fees? In most UK auctions, both parties contribute: the buyer pays a premium on top of the hammer price, while the seller pays commission and may also incur agreed charges for the handling and sale of their property.
The precise arrangement depends on the auction house, the type and value of the lot, and the terms for that particular sale. It should never be assumed. Before bidding or consigning, read the conditions of business and ask for a clear calculation based on the lot you have in mind.
Who pays auction house fees in a UK sale?
The short answer is that buyers and sellers usually pay different fees for different services.
The buyer’s principal charge is the buyer’s premium. This is a percentage of the hammer price, payable in addition to the winning bid. VAT may apply to the premium, and occasionally to other elements of the transaction depending on the lot and the auction’s VAT status.
The seller’s principal charge is commission. It is deducted from the hammer price after the sale. A seller may also be charged for photography, catalogue production, insurance, specialist marketing, transport, storage or other services where these have been agreed. Some charges are standard; others reflect the requirements of a particular consignment.
This division reflects the role each party plays. The seller pays for professional appraisal, cataloguing, marketing, client handling and the administration of the sale. The buyer pays for access to the auction, the opportunity to bid on professionally presented property, and the auctioneer’s work in conducting and settling the purchase.
What buyers pay beyond the hammer price
The hammer price is the amount at which the auctioneer brings the bidding down. It is the key figure shown in the results, but it is not normally the buyer’s invoice total.
Buyer’s premium
A buyer’s premium is calculated as a percentage of the hammer price. If a lot sells for £1,000 and the published premium is 25%, the premium would be £250 before any applicable VAT. The buyer’s invoice would therefore be higher than £1,000.
Premium rates are published in the terms for each auction. They may vary between houses and, in some cases, between specialist categories or value bands. A serious bidder should establish the rate before deciding on a maximum bid, rather than treating it as an afterthought once the lot is won.
VAT
VAT can be the area that causes most confusion. In many auctions, VAT is charged on the buyer’s premium. Whether VAT is chargeable on the hammer price itself depends on the VAT treatment of the particular lot. Catalogues often use symbols or notes to identify lots that carry VAT or are sold under a margin arrangement.
For buyers who are VAT-registered or purchasing for a business, the treatment may have accounting implications. For private buyers, the practical point is simpler: check the catalogue entry and conditions, then budget from the total payable rather than from the estimate alone.
Online bidding and payment charges
Many buyers bid remotely through online platforms. Certain platforms charge an additional internet bidding fee, usually expressed as a percentage of the hammer price. This is separate from the auction house buyer’s premium and should be included when calculating the all-in cost.
Other potential charges include packing, postage, courier delivery, export documentation, import duty and storage. These are not always paid through the auctioneer, but they remain part of the cost of acquiring the object. A small silver lot may be straightforward to post; a large painting, clock or cabinet may require specialist collection and insured transport.
What sellers pay when consigning property
A well-run auction sale involves considerably more than placing an item in a room on sale day. The auctioneer must assess the property, agree a reserve where appropriate, research attribution and condition, photograph it, prepare the catalogue description, market the sale, manage viewings, take bids, collect payment and arrange settlement. Seller charges meet part of that work.
Seller’s commission
Seller’s commission is typically a percentage of the hammer price. It is agreed when the property is consigned and deducted before the seller is paid. The rate may reflect the value, category, condition and marketability of the item, as well as the overall size of the consignment.
For an important work of art, a substantial collection or a valuable estate consignment, commission may be negotiated individually. Conversely, lower-value lots can carry a different cost structure because cataloguing, photography and administration require a similar level of work regardless of the final hammer price.
A seller should ask whether the quoted commission is inclusive or exclusive of VAT. The distinction matters when comparing proposals from different auction houses.
Entry, catalogue and marketing charges
Some auction houses charge a lotting or entry fee for each item offered, whether it sells or not. There may also be charges for enhanced photography, advertising, specialist catalogue production or targeted marketing where a consignment merits additional exposure.
These costs are not inherently a disadvantage. Strong photography, accurate descriptions and effective marketing can make a material difference to bidder confidence and competition. The important point is that the seller understands what is included in the commission and what will be charged separately.
Unsold, withdrawn and storage charges
If a lot does not sell, it may be returned, reoffered in a later sale, or dealt with by agreement. There can be charges for unsold lots, collection or storage, particularly if property remains at the saleroom beyond the stated collection period.
Withdrawing a lot after it has been catalogued and marketed can also carry a fee. By that stage, the auction house may already have incurred photography, research, advertising and administrative costs. Sellers should discuss reserve levels carefully before the catalogue is finalised, rather than seeking to withdraw property when interest begins to emerge.
Reserves, estimates and fees are different things
These three terms are often used interchangeably, but they serve distinct purposes.
An estimate is the auctioneer’s opinion of the likely bidding range, based on condition, provenance, comparable sales, current demand and the nature of the sale. It is not a guarantee and does not include the buyer’s premium.
A reserve is a confidential minimum hammer price below which the auctioneer will not sell the lot, subject to the agreed terms. It protects the seller, but an unrealistic reserve may deter bidding or leave a desirable item unsold. The best reserve strategy is commercially informed, not merely aspirational.
Fees are the charges applied to the transaction. They are payable according to the published conditions or consignment agreement, whether calculated from the hammer price or charged as a separate service. Understanding all three before sale day prevents disappointment on either side.
How to calculate a buyer’s true maximum bid
A buyer should work backwards from the maximum all-in figure they are prepared to pay. Include the buyer’s premium, VAT on the premium, any online bidding charge and realistic transport costs. For a high-value lot, consider restoration, framing, insurance and specialist advice as well.
For example, a bidder with an all-in limit of £5,000 should not simply bid to £5,000. If the buyer’s premium and VAT together add a significant percentage, the hammer limit must be lower. This is particularly relevant in fast-moving rooms, where an apparently modest extra bid can move the invoice beyond the intended budget.
The same discipline applies to sellers. Instead of focusing only on a headline estimate, ask for an illustration of likely net proceeds at several hammer prices. This provides a more useful basis for deciding whether auction is the right route and whether the proposed reserve is sensible.
Questions worth asking before you bid or sell
Before bidding, ask what buyer’s premium applies, whether VAT affects the hammer price or premium, whether the chosen online platform adds a charge, and how long you have to pay and collect. Inspect condition reports carefully. Fees are predictable; unexpected restoration or transport costs are often where a purchase becomes more expensive than planned.
Before consigning, ask for the seller’s commission in writing, confirmation of VAT treatment, details of all per-lot charges, the policy for unsold lots, the reserve recommendation and the expected settlement timetable. It is also sensible to establish who bears the risk while the item is in transit and while it is held by the auction house.
At John Nicholson’s, as at any reputable saleroom, the applicable terms are published for the sale and the consignment agreement records the basis on which property is offered. The right questions asked before the catalogue closes are far easier to resolve than questions raised after the hammer falls.
Auction fees are part of the market, not a hidden complication. When they are understood in advance, buyers can bid decisively and sellers can judge their likely return on a clear commercial basis.
