Australian Government Auction True-Cost Calculator

The hammer price is rarely what you pay. Australian auctioneers (Allbids, Grays, Pickles) add a buyer's premium and GST at a flat 10%. Add pickup or transport and you have your real total - work it out below before you bid.

Winning bid ($)Buyer's premium (%)GST (%) - optionalMost surplus lots are sold plus GST at a flat 10% (some are GST-inclusive - check the listing).Round-trip pickup distance (mi) - optionalEstimated at $1.42/mi.

What you'll actually pay

Winning bid: $3,550
Buyer's premium (12.8%): $454
GST (10%): $400
True cost: $4,405

GST and pickup are your estimates - confirm GST with the seller. Buyer's premium is set per auction.

Browse live Australian government auctions or see all buyer tools.