The buyer’s premium is an additional charge paid by the successful bidder on top of the hammer price. It is one of the most important costs to understand before bidding, particularly when buying antiques, fine art, Irish silver, militaria, furniture, books, or collectibles from an auction house overseas.
For Australian buyers, the final amount can also involve GST treatment, currency conversion, insurance, packing, and international freight. A bid that looks affordable in an online catalogue can become considerably dearer once every auction charge is included.
| Cost element | What it means | Example on a €500 hammer price |
|---|---|---|
| Hammer price | The winning bid accepted by the auctioneer | €500 |
| Buyer’s premium | Percentage charged by the auction house | €100 at 20% |
| GST or local tax | May apply according to the auction terms | Check catalogue |
| Packing and freight | Cost of preparing and sending the lot | Varies |
| Currency conversion | Difference between euro and Australian dollar | Depends on provider |
At a live or online auction, the hammer price is the amount reached when bidding closes. The buyer’s premium is then calculated as a percentage of that amount. If the premium is 20 per cent and the winning bid is €500, the premium is €100, creating a subtotal of €600 before any applicable tax or delivery charge.
Rates are set by each auction house and can vary by sale, lot category, or bidding platform. Some catalogues show estimates that exclude the premium, while online platforms may display a calculated total. Always read the auction conditions before placing a bid, rather than assuming the advertised estimate is the amount you will pay.
An Australian buyer should convert the entire expected invoice into Australian dollars, not just the catalogue estimate. Exchange rates can move between bidding day and payment day, and card providers may add foreign transaction fees. A €1,000 purchase can therefore cost more than a simple online currency conversion suggests.
Shipping from County Cork to Brisbane, Sydney, Melbourne, or Perth may also involve specialist packing and transit insurance. Large furniture and framed paintings can be particularly expensive to move. If you are buying from a local auction in Australia, the same principle applies to GST, collection fees, and freight between states; a buyer in Ballarat may face a very different delivery cost from someone collecting in inner Melbourne.
The catalogue should state the buyer’s premium, tax treatment, payment deadline, collection arrangements, and any restrictions on bidding. Look for wording such as “plus buyer’s premium” or “inclusive of VAT,” and check whether the online bidding platform adds its own service fee.
Condition reports are equally important. A low estimate may reflect restoration, damage, missing components, or uncertain attribution. For paintings, provenance and research can affect value substantially; specialist material such as portraits of Israeli artists demonstrates why an artwork’s history can matter alongside its visual appeal.
The safest approach is to decide your maximum all-in budget first, then work backwards to find the highest hammer price you can afford. If your total budget is €600 and the premium is 20 per cent, your maximum hammer bid must be lower than €500, leaving room for tax, shipping, or platform charges.
This calculation is useful when bidding from Australia through absentee bidding or an online catalogue. It prevents the excitement of a final-minute bid from pushing the purchase beyond your limit. Dealers and experienced collectors often keep a simple spreadsheet that includes the hammer price, premium, tax, freight, insurance, and expected restoration costs.
A valuation can help sellers set realistic expectations before consigning an item, although a valuation is not a guarantee of its eventual auction result. Cork Auction Rooms provides valuations for individual objects, paintings, and complete contents, which can be useful when an estate includes mixed furniture, silverware, books, or decorative pieces.
For an overview of how the process works, read about free verbal valuations. Clear photographs, measurements, signatures, labels, and any known family history can help an auction specialist assess an item more accurately.
Australian sellers should also consider whether a local sale, interstate auction, or international consignment is most practical. A valuable piece of Irish silver may attract specialist interest in Cork, while a bulky farmhouse table could be more economical to sell closer to home. Auction advice should account for likely demand, transport, insurance, and the costs deducted from the sale proceeds.
Before bidding in a Cork Auction Rooms sale, review the online catalogue, note the premium and tax terms, and calculate your complete landed cost in Australian dollars. When selling, arrange a valuation early and provide as much provenance and condition information as possible. A clear budget and informed consignment decision make the auction process far easier to manage.