What is the buyer's premium — and is it legally mandatory to disclose it?
The buyer's premium is an additional charge imposed by the auction house on the winning bidder, expressed as a percentage of the hammer price — typically 5% to 20%. It is the auction house's primary fee for conducting the auction, paid by the buyer on top of the hammer price. There is no specific Indian law mandating disclosure of the buyer's premium, but the Consumer Protection Act 2019's unfair trade practice provisions effectively require it — a material charge not disclosed before bidding is an unfair term.
What the buyer's premium is
At a formal auction, the hammer price is the amount bid by the winning bidder. The total amount the buyer pays is the hammer price plus the buyer's premium (a percentage of the hammer price) plus GST on the buyer's premium (18% on the premium as a service). If the hammer price is ₹10,000 and the buyer's premium is 15%, the buyer pays ₹10,000 + ₹1,500 + ₹270 (18% GST on ₹1,500) = ₹11,770. The buyer who bid ₹10,000 pays ₹11,770.
This additional cost — up to 20% above the hammer price — can significantly affect the economics of numismatic bidding. A collector who calculates a maximum all-in price of ₹12,000 for a note must bid no more than approximately ₹10,169 if the buyer's premium is 15% plus GST, or they will exceed their budget.
The legal requirement — disclosure through CPA 2019 rather than SGA
The Sale of Goods Act 1930 contains no provision specifically requiring disclosure of the buyer's premium. The auction rules in Section 64 address the mechanics of the auction but not the fee structure. However, the Consumer Protection Act 2019 Section 2(47)(r) defines 'unfair contract terms' to include terms that create a significant imbalance in the rights and obligations of the parties to the detriment of the consumer. A buyer's premium that is not disclosed before bidding — so the buyer has no opportunity to factor it into their bidding — creates a significant imbalance: the buyer believes they are paying the hammer price when in fact they owe substantially more.
Consumer forums have held that material charges must be disclosed before the consumer commits to the transaction. An auction house that discloses the buyer's premium only in fine-print terms that a bidder would not reasonably read before placing bids has not effectively disclosed a material charge. The disclosure must be prominent and visible before bidding commences.
GST on the buyer's premium
The buyer's premium is a service provided by the auction house to the buyer (facilitating the auction). GST at 18% applies to the buyer's premium as a service. This is separate from the GST on the sale of the numismatic item (5% for coins, 12% for banknotes). A buyer at a numismatic auction pays GST twice: 18% on the buyer's premium (service component) and 5% or 12% on the hammer price (goods component). Auction houses must clearly distinguish these two GST components in their invoices.
Buyer's premium — the complete cost calculation Hammer price: ₹10,000 Buyer's premium at 15%: ₹1,500 GST on buyer's premium (18%): ₹270 GST on hammer price (banknote, 12%): ₹1,200 Total payment: ₹12,970 on a ₹10,000 bid The note costs 29.7% more than the winning bid — know this before bidding |
Laws & authorities referenced in this chapter
Consumer Protection Act 2019 — §2(47)(r) (unfair contract terms; undisclosed material charges)
CGST Act 2017 — 18% GST on buyer's premium as service; 5%/12% on hammer price as goods
Sale of Goods Act 1930 — §64 (no specific buyer's premium disclosure requirement in SGA — CPA fills the gap)
Buyer's premium: typically 5-20% of hammer price, paid by buyer to auction house. No specific SGA requirement to disclose — but CPA 2019 unfair terms provisions effectively require prominent pre-bidding disclosure. GST: 18% on buyer's premium (service) + 5% or 12% on hammer price (goods) = two separate GST components. Always calculate total all-in price (hammer + premium + GST) before deciding maximum bid. Undisclosed buyer's premium = unfair trade practice under CPA 2019.
This is educational content, not legal advice. For a specific situation, please consult a qualified legal professional. Excerpted from Currency, Coins & The Law by Mayank Agarwal, Part 17: Auctions — Formal Houses, Facebook Live & the Complete Legal Framework.