Selling at auction, from first estimate to final check
An auction can turn a desirable object into a bidding contest, or leave it unsold with a bill for fees. These steps help you decide whether auction suits what you own, then choose the right house and negotiate terms that leave more of the hammer price with you.
Decide whether auction suits the item
Auctions work best when several buyers want the same thing: rare pieces, recognized makers, items fresh to the market and categories with active collectors. Competition is what pushes a price past the estimate.
When demand is thin, a quiet room can sell your item cheaply or not at all. Ordinary furniture, common collectibles and pieces needing repair often do better through a dealer, consignment shop or private sale, where you can hold out for your price. If you need a guaranteed amount or quick cash, ask a dealer for an outright offer and compare it with the auction estimate after fees.
Choose the right venue
Ask each candidate which recent sales included items like yours and what they brought. A house that sells your category regularly has the right mailing list and bidders; one that rarely does may struggle, whatever its reputation. Ask how it would promote your piece, whether through a printed or online catalog, email lists, bidding platforms or calls to known collectors.
- Major international houses: global reach for high-value property, with higher minimum consignment values.
- Regional houses: local collectors and lower thresholds, often strong for regional material.
- Online platforms: wide audiences and low entry costs, with more of the work falling on you.
- Specialist auctioneers: deep expertise and loyal bidders in one field, such as coins, stamps, wine or cars.
Get estimates, and know when you need an appraisal
Auction estimates are usually free. They predict a likely selling range, and houses sometimes set them modestly to attract bidders, so the highest estimate isn’t automatically the best offer. Compare how each house would market the item, not just its numbers.
An appraisal is a separate, paid service. Insurance appraisals typically use replacement value, while estates and charitable donations use fair market value. Look for an appraiser credentialed by a professional body such as the American Society of Appraisers, and avoid anyone who charges a percentage of the value or offers to buy the item.
Read the consignment agreement line by line
The agreement decides how much of the hammer price reaches you. Commission rates are often negotiable for valuable or multi-item consignments, so ask before you sign, and request a sample settlement based on the estimate.
- Seller’s commission: the house’s percentage of the hammer price.
- Buyer’s premium: paid by the buyer, but it shapes how high bidders will go.
- Fees: photography, catalog, insurance, handling, shipping and storage.
- Reserve: the confidential minimum price and how it can be changed.
- Unsold and withdrawal fees: what you owe if the item doesn’t sell or you pull it.
- Payment timeline: when you’re paid, and whether that waits on the buyer paying first.
Gather provenance and pick your sale
Provenance, an object’s documented ownership history, can raise both bidder confidence and price. Gather receipts, letters, earlier appraisals, exhibition or publication records, old photographs showing the piece in a family home, and any original boxes or certificates. Don’t clean, polish or repair anything before a specialist sees it, because amateur cleaning can sharply cut the value of coins, bronzes and antique furniture finishes.
Timing matters as well. Many houses hold themed or category sales on a calendar, and consignment deadlines can fall months before the sale date to allow for photography and cataloging. Items containing ivory, tortoiseshell or other protected wildlife materials can face federal and state restrictions, and many houses won’t accept them.
Check the settlement statement
After the sale, the house sends a settlement statement showing the hammer price, each deduction and your net proceeds. Check every line against your agreement and query anything you don’t recognize.
For example, a $10,000 hammer price with a 10 percent seller’s commission, a $100 photography fee and insurance at 1 percent of the hammer leaves you $8,800. The buyer’s premium doesn’t appear in your proceeds, because the buyer pays it to the house. Keep the statement, since it documents your sale price and selling costs for tax purposes.
Plan for taxes before you sell
The IRS treats collectibles such as art, antiques, coins, stamps, gems and precious metals differently from stocks. Long-term gains on collectibles can be taxed at a maximum federal rate of 28 percent, higher than the top rate on most other long-term capital gains.
Your gain is generally the sale price minus your cost basis and selling expenses such as commission, so dig out proof of what you originally paid. If you inherited the item, your basis is generally its fair market value on the date of the previous owner’s death, which is why a date-of-death appraisal matters. State taxes may apply too, so talk to a tax professional before the sale, not after.