A lot may be described with a tempting estimate, yet the hammer price is not the final figure a successful bidder pays. If you are asking “what buyers premium covers”, the short answer is that it is the auctioneer’s charge to the purchaser for conducting the sale. The more useful answer is that it pays for a professional auction service, but it does not automatically include every cost connected with acquiring, paying for, collecting or exporting a lot.
For collectors, dealers and private buyers alike, the sensible figure to bid to is an all-in total. This means reading the conditions of sale before registering, noting the stated buyer’s premium and checking whether VAT or any additional charges apply to the particular lot.
What buyer’s premium covers in an auction sale
Buyer’s premium is a percentage charged on the hammer price – the amount at which the auctioneer brings down the hammer or closes the online bidding. It contributes to the work required to bring a sale to market and complete it properly: cataloguing, photography, specialist handling, advertising, saleroom administration, bidder registration, conducting the auction, invoicing and payment processing.
At a well-run auction house, it also supports the expertise behind the sale. That may include research into a painting’s attribution, careful jewellery cataloguing, condition checks on furniture, or the detailed description of an Asian work of art. These activities help create an orderly, informed marketplace in which buyers can assess lots and sellers can reach an appropriate audience.
It is not a separate payment for ownership of the object itself. The hammer price is the price achieved for the lot; the buyer’s premium is the auction house’s charge to the buyer. Together, with any applicable tax and other stated charges, they make up the amount due.
The premium is normally set out in the auction house’s terms and may differ between sales or categories. It is therefore unwise to rely on a rate seen at another auction, or on a previous invoice. Always use the rate published for the sale in which you intend to bid.
How buyer’s premium is calculated
The starting point is straightforward: multiply the hammer price by the stated premium percentage. The critical detail is whether the published rate is quoted inclusive or exclusive of VAT.
For example, assume a lot is knocked down at £1,000 and the buyer’s premium is stated as 25% plus VAT. The premium is £250, and VAT at 20% on that premium is £50. Before considering any VAT on the lot itself or other charges, the purchaser’s invoice would be £1,300.
This example is illustrative only. Auction houses may express premiums differently, and the rate applicable to a specific sale is the one shown in its conditions. A purchaser should also distinguish between a premium stated as “plus VAT” and one stated as “inclusive of VAT”. The headline percentage can look similar while the calculation differs.
Estimates are not a calculation of the final invoice. They are guides to likely hammer price, usually shown as a range and commonly excluding buyer’s premium and tax unless expressly stated otherwise. A bidder who decides on a ceiling from the estimate alone may find that their true spend exceeds the budget they had in mind.
A practical bidding calculation
Before the sale, choose the maximum amount you are willing to pay in total, rather than the maximum hammer price. Deduct the premium and relevant taxes from that total to establish your bidding limit. If you are bidding through an online platform, account for any platform charge as well.
This is particularly useful when bidding on closely contested lots. It allows you to make prompt decisions in the room, by telephone or online without trying to calculate percentages while the auctioneer is taking bids.
Charges that may sit outside the buyer’s premium
Buyer’s premium should not be treated as a single charge that includes every post-sale service. The following costs may apply depending on the lot, the buyer’s location and the method of bidding:
- VAT on the lot: Some lots may be subject to VAT on the hammer price, while others are sold under a margin scheme or another VAT treatment. The catalogue and conditions should be checked carefully.
- Online bidding fees: Certain third-party bidding platforms apply an additional charge to successful bids. This is separate from the auction house’s buyer’s premium and should be visible before you bid.
- Artist’s Resale Right: Qualifying works by living artists and artists who died within the relevant period can attract a resale royalty above the statutory threshold. Where applicable, this will be identified in the sale information.
- Packing, carriage and insurance: Collection from the saleroom is not the same as delivery. Buyers arranging a courier, specialist art transport or international shipment remain responsible for those arrangements and costs unless agreed otherwise.
- Storage and collection charges: Lots must usually be paid for and removed within the stated collection period. Charges can arise where goods are left beyond that deadline.
- Export, import and licensing costs: A buyer taking cultural property overseas may need an export licence, customs documentation, import clearance or specialist advice. These obligations are not absorbed by the premium.
Not every one of these charges will apply to every purchase. A silver salver collected promptly by a UK buyer will have a different cost profile from a large painting sent abroad. The point is to establish the position for the individual lot before bidding, rather than after the invoice is issued.
What the premium does not guarantee
A buyer’s premium is not an insurance policy against changes in taste, condition issues discovered after collection, or a future fall in market value. Fine art, antiques and collectables are often sold with age-related wear, restoration, alterations or imperfections. These are part of the nature of the market, and condition can affect value materially.
Catalogue descriptions and condition reports are valuable aids, but they should be read with proper care. A condition report is not necessarily exhaustive, particularly on complex objects, and an interested buyer should inspect in person where possible or ask focused questions before the sale. For a clock, this may mean asking about movement, case and operation; for a painting, examining surface condition, lining, restoration and frame; for jewellery, considering stones, settings, hallmarks and later alterations.
Nor does the premium guarantee that a purchase will prove to be an investment. Auction buying is often rewarding because it offers access to distinctive objects with history and craftsmanship, but market values move by category, maker, condition and fashion. Buy with a clear view of the object, the available evidence and your own reason for acquiring it.
Why transparency matters to serious buyers
A clear buyer’s premium allows an auction house to maintain the specialist systems and people required for a credible sale, while ensuring purchasers understand the commercial basis on which they are bidding. The important standard is not that every purchase has no additional costs – that would be unrealistic – but that the applicable charges are made clear in advance.
At John Nicholson’s, buyers should consult the sale-specific terms, catalogue notices and online bidding information before registering. This is particularly important for specialist sales, higher-value lots and international purchases, where VAT treatment, resale rights, collection arrangements or export considerations may require closer attention.
Bid to your all-in figure, not the estimate
The most disciplined buyers set a maximum total before the first bid is placed, then treat the hammer price as only one element of it. Once the premium, VAT and practical costs of collection are understood, you can bid decisively for the lots that genuinely merit a place in your collection.
