A buyer’s premium is a fee the auction house adds on top of your winning bid — the hammer price — and it’s paid by you, the buyer, not the seller. In the UK it’s charged as a percentage of the hammer price, commonly between 20% and 30%, and VAT is usually added on the premium itself rather than the whole lot. So the figure you shout or click is never the figure you actually pay.
If you’ve only ever bought over a shop counter, this catches people out. The premium is how salerooms make their living, and it’s entirely normal — but it means a £100 hammer price can quietly become £124 or more once the premium and its VAT land. Here’s how it works, roughly what it costs, and how to work out your real spend before you commit.
What is a buyer’s premium and why do auction houses charge it?
Every lot that sells generates two fees: a seller’s commission, deducted from what the consignor receives, and the buyer’s premium, added to what you pay. The premium covers cataloguing, photography, staff, the bidding platform and the saleroom itself. It’s set out in the terms of sale for every auction, and by placing a bid you agree to those terms — worth reading in full, because houses set their own rates.
For a plain-English tour of how the UK trade operates, including who pays what and why, our UK auction market report is a good grounding before you register anywhere.
How much is a typical buyer’s premium in the UK?
Rates vary from house to house, so always check the specific sale, but as a rule of thumb:
- Around 20%–30% of the hammer price is the common band across UK salerooms.
- VAT (currently 20%) is usually added to the premium, not the hammer price — so a 20% premium effectively costs you 24% of the hammer once VAT is on it.
- Online bidding platforms sometimes add their own surcharge, often a few per cent, if you bid live through a third-party site rather than direct.
- A minimum premium may apply on very cheap lots, so a £1 lot won’t cost the house pennies to process.
A concrete example from a real UK saleroom: house-clearance specialists like HCS Auctions Ltd in Darwen state a buyer’s commission of 20% plus VAT, with a £1 minimum commission. On that £1 minimum, VAT is added on top of the commission — a small illustration of how the sums stack.
Their online-only House Clearance sale, run from The Old Co-op Bakery on Borough Road, is the kind of everything-starts-at-£1 event where the premium maths matters most — the lots are cheap, so a fixed minimum and the VAT-on-premium rule change the real cost proportionally more than they would on a £5,000 painting.
How do I calculate the real price I’ll pay?
The formula is simple once it’s laid out. Take your maximum comfortable spend and work backwards to a hammer limit:
- Hammer price — your winning bid.
- Plus the premium — hammer × premium rate, say 20%.
- Plus VAT on that premium — premium × 20%.
- Plus any lot VAT, storage, packing or postage — check the terms.
A worked example
Bid £100 at a 20% premium plus VAT: the premium is £20, VAT on it is £4, so you pay £124 before any postage. If £120 is your absolute ceiling, your real hammer limit is roughly £96 — not £120. Set the ceiling first, then bid to the lower number. It’s the single most useful habit a new bidder can build.
What sells at everyday UK antiques and clearance auctions?
This is where general-interest sales earn their keep. The Darwen clearance sale is a good snapshot of the mixed-lot end of the market: a vintage relief-carved floral alabaster table lamp, a set of six Kellogg Company promotional ceramic cereal bowls dated 1984, a pair of Sanyo SX-F280 three-way speakers, and a collection of vintage hollow-cast lead and die-cast toy figures and vehicles. There’s a run of Ordnance Survey, Bartholomew’s and Geographia folding maps for the ephemera crowd, framed needlework including a signed work by Sandra Holmes, and an early 20th-century solid oak wall mirror with bevelled glass. Costume jewellery, decorative glassware and household sundries fill out the rest — proper house-clearance variety.
Over the border, North Wales Auctions run a similarly broad online sale from the Abergele Antique Centre, on the corner of Bridge Street and Llys Gele.
Their All Things Antique, Collectable and Retro sale comes with a reminder that runs through the whole trade: pictures form part of the description, and if you can’t view in person you should request a condition report before bidding. Items labelled “designer style” are decorative pieces, not genuine articles, and jewellery with stones is sold in used, worn condition. Reading the long description isn’t optional — bidding means agreeing to it.
How do I register and bid at an online UK auction?
Both sales above are online-only, which is now the default for regional UK salerooms. The process is much the same everywhere:
- Register in advance on the platform hosting the catalogue — you’ll usually need card details to verify you.
- View the lots by studying every photograph and requesting condition reports on anything you can’t inspect in person.
- Set a maximum and either leave an absentee or proxy bid or bid live as the lots run.
- Win, pay, collect or arrange postage — factoring the premium, VAT and any carriage into your budget.
You can follow the live catalogues directly: the HCS Auctions catalogue and the North Wales Auctions catalogue both show current lots and closing times.
Where can I find these sales on Auction Eagle?
Regional mixed sales turn over constantly, so the hub pages are the place to watch rather than any single date. Bidders in the North West can track saleroom activity across Lancashire, while cross-border buyers should follow North Wales for coastal antique-centre sales.
By interest, browse the collectables auctions hub for toys, maps and retro ephemera, the jewellery auctions hub for costume and stone-set pieces, the ceramics and porcelain hub for earthenware and decorative wares, and the furniture auctions hub for mirrors, lamps and larger lots. To see who’s selling near you, the full directory of UK auction houses lists every saleroom on the site.
First-time buyer’s checklist
- Read the terms of sale for the specific auction — find the premium rate and whether VAT is on the premium or the lot.
- Set your total ceiling, then work back to a hammer limit that leaves room for premium, VAT and postage.
- Request condition reports on anything you can’t view; treat every photo as part of the description.
- Check collection and postage arrangements before you bid, especially for lamps, mirrors or speakers that are awkward to ship.
- Register early so a verification hiccup doesn’t lock you out on sale day.
Your next step
Once the premium is second nature, the rest is just discipline. Start from the Auction Eagle home page to browse the live calendar, follow the houses whose stock suits you, and let the hub pages bring the next sale to you. Bid to your real number, not the hammer — and you’ll never be surprised at the till.
Frequently Asked Questions
What is a buyer's premium at auction?
It's a fee the auction house adds to your winning hammer price, paid by the buyer, not the seller. In the UK it's typically 20%–30% of the hammer, with VAT usually added on the premium, so your final cost is always higher than your bid.
How much is a typical UK buyer's premium?
It varies by house, but commonly 20%–30% of the hammer price, with VAT (currently 20%) added on the premium. Online platforms may add a further surcharge, and some houses set a minimum premium on cheap lots.
How do I work out the real price I'll pay?
Add the premium to your hammer price, then add VAT on that premium, plus any lot VAT and postage. For example, a £100 bid at a 20% premium plus VAT costs £124 before carriage.
How do I bid at an online UK auction?
Register in advance on the platform hosting the catalogue, verify your card details, study every photo and request condition reports, then set a maximum bid or bid live. Pay after winning and arrange collection or postage.
What sells at general UK antiques and clearance auctions?
A broad mix: vintage lamps, ceramics and earthenware, costume jewellery, die-cast toys, maps and ephemera, framed pictures, mirrors and household sundries. Lots often start very low, which is why the buyer's premium matters proportionally more.
Where can I find UK auctions with buyer's premium details listed?
Browse Auction Eagle's category hubs for collectables, jewellery, ceramics and furniture, or the full UK auction-house directory. Each listing links to the live catalogue where the premium and terms of sale are stated.
