Create an account
Register securely on the Dunn Bros bidding platform and complete the requested details.
Timed online auctions
Buying at auction
Browse equipment, register securely and bid online from your phone, tablet or computer.
Straightforward online bidding
Buy with the information you need
Each auction catalogue brings together plant, agricultural machinery, commercial vehicles, tools and working equipment from a range of sellers.
Lot descriptions, photographs and available documents are shown on the Dunn Bros bidding platform. Buyers should review the complete entry, ask questions and inspect equipment where appropriate before placing a bid.
A bid is a commitment to buy. Please read the auction-specific terms, buyer’s premium, VAT position, payment deadline and collection arrangements before bidding.
How to take part
Four steps to bidding
Register at least 24 hours before the auction, as required by our timed-auction terms. Approval and any deposit checks must be completed before you can bid.
Register for the auction
Open the relevant catalogue, review the terms and complete any required approval steps.
Review the lot
Read the description, examine the photographs and arrange an inspection when available.
Place your bid
Bid online and monitor the lot through its closing time and any automatic extension.
Before you bid
Check the important details
The applicable information can differ between auctions and lots. The live catalogue and auction terms are the definitive source.
Condition and inspection
Auction equipment is offered on the basis described in the catalogue and terms. Inspect the lot or ask the team for available information before bidding.
Buyer’s premium and VAT
Check the current auction terms and lot details for the applicable buyer’s premium, VAT and any additional charges before calculating your maximum bid.
Payment
Full payment is due within 7 days of the auction under our timed-auction terms. Check accepted payment methods. For invoice or payment questions, contact accounts@dunnbrosauctions.co.uk.
Collection and transport
Collect within 3 weeks of the auction and only after cleared payment. Storage is £10 per lot per day after 3 weeks. Confirm the location and loading arrangements before travelling. Read collection and vehicle requirements.
February 2026 terms
Buyer’s premium & VAT
For timed online auctions conducted via BidSpotter (including the Dunn Bros White Label site at bid.dunnbrosauctions.co.uk) and i-bidder.
£10,000 or less
The buyer’s premium is 20% of the total hammer price, plus VAT on the premium.
Above £10,000
The buyer’s premium is 10% of the entire hammer price, plus VAT on the premium. This is not a stepped calculation.
VAT on the lot
Assume VAT applies to the hammer price unless the individual lot description clearly states otherwise, including VAT-exempt or Margin Scheme treatment.
Platform fees included
Dunn Bros absorbs BidSpotter and i-bidder platform fees. The purchase price is hammer price + buyer’s premium + applicable VAT.
| Cost | £1,000 hammer | £11,000 hammer |
|---|---|---|
| Hammer price | £1,000 | £11,000 |
| VAT on hammer (20%) | £200 | £2,200 |
| Buyer’s premium | £200 (20%) | £1,100 (10%) |
| VAT on premium (20%) | £40 | £220 |
| Total to pay | £1,440 | £14,520 |
Examples assume VAT of 20% on both hammer price and premium. Read the full buyer information and timed-auction terms.
Estimate your total purchase cost
Enter a hammer price to see the buyer’s premium and VAT. This estimate uses 20% VAT on both the hammer price and the premium, under our February 2026 timed-auction terms.
- Hammer price
- VAT on hammer (20%)
- Buyer’s premium ()
- VAT on premium (20%)
- Estimated total
For lots with a different VAT treatment, including VAT-exempt or Margin Scheme listings, ask Sales to confirm the total. This is a purchase-price estimate, not an invoice; it excludes transport, storage and any other costs outside the purchase price.
When bidding closes
Stay with the lot
Timed auctions may extend when a bid is placed near the scheduled closing time. This gives other registered bidders a fair opportunity to respond.
Keep the catalogue open, watch the displayed closing time and rely on the bidding platform’s confirmation of whether you are currently the highest bidder.
Questions about a lot?
For sales information, viewing enquiries or questions about an auction entry, contact the Dunn Bros team.
sales@dunnbrosauctions.co.uk01823 211888
Technical bidding help
If you are having difficulty registering, signing in or using the online bidding platform, contact technical assistance.
internet@dunnbrosauctions.co.uk