What does “buyer's premium” mean?

What it means

Buyer's premium is the commission charged by an auction house or consignment dealer, levied on the final sale price of an item. It is not part of the item's intrinsic value but rather the service fee for the auction house. In mainstream terms, this is the seller's commission applied to the buyer. This fee is calculated as a percentage of the hammer price (the price the item sold for before the premium is added). For collectors and resellers, this premium directly inflates the total acquisition cost.

What it does to price

The premium acts as a direct cost multiplier on the hammer price. Standard premiums range from 15% to 30%, depending on the auction house and the category of the item (e.g., fine art premiums are higher than common ephemera). If an item sells for a hammer price of \$1,000 and the buyer's premium is 20%, the total cost to the buyer is \$1,200. This cost must be factored into the profit calculation. A high premium on a low-value item can quickly erase any potential margin.

How to spot it

The buyer's premium is almost always disclosed in the auction house's terms and conditions or in the lot description prior to bidding. It is not something hidden at the end of the transaction. When viewing online listings, look for "Buyer's Premium," "Buyer's Commission," or "Total Cost Estimate." If a listing only shows a hammer price without any stated commission, the premium must be requested from the auction house before committing to a bid.

Buying smart

Paying a buyer's premium is justified when the item's market value is significantly higher than the hammer price, or when the auction house provides necessary provenance, professional handling, or a high-traffic sales platform that guarantees visibility. If the item is low-value, the premium can easily exceed the item's intrinsic worth, making a private sale more cost-effective. A fair deal occurs when the hammer price, plus the buyer's premium, still leaves a healthy margin above the item's true market value.

Selling smart

When consigning, proving the item is authenticated and professionally handled by a reputable auction house can command a higher final sale price, which offsets the commission. Listing the buyer's premium clearly in the consignment agreement manages buyer expectations. For the seller, the premium is the cost of the service; a well-documented, high-profile sale with a clear premium structure provides credibility that attracts serious buyers willing to pay the full, premium-inclusive price.