How to Set a Bidding Budget and Stick to It

Auctions move quickly, and it is easy to spend more than you planned when bidding gets lively. This guide is for buyers who want a simple, repeatable way to set a budget before the sale and hold to it while bidding.

Decide what the purchase is worth to you

A good budget starts with two separate questions: what is the item likely to sell for, and what is it worth to you? The first comes from research. The second depends on why you want it.

• If you are buying to resell, your limit should leave room for fees, repairs, selling costs and a profit. Work backward from a realistic resale price, not a hopeful one.
• If you are buying to use, compare the auction cost to buying a similar item new or from a store.
• If you are buying for a collection, consider how rare the item is and how often a similar one comes up for sale.

Set an overall spending limit for the sale

Before looking at individual lots, decide how much you are willing to spend at the entire auction. This protects you from winning many small lots that add up to more than you meant to spend. Write the total down somewhere you will see it during the sale.

If you are interested in several lots but only need one, decide that in advance too. For example, you might plan to buy one of three similar tables, and stop bidding on the rest once you win one.

Turn your limit into a maximum hammer bid

Your total cost includes more than the winning bid. Before you set a number for each lot, account for:

• The buyer's premium stated in the sale terms.
• Sales tax, if it applies to you.
• Shipping, delivery or the cost of renting a truck or trailer.
• Cleaning, repair or restoration you expect to need.

Subtract those costs from what the item is worth to you, and the result is your maximum hammer bid. Write that number next to the lot in your catalog or notes.

Pick a number that fits bid increments

Auctioneers raise bids in set steps called increments, which usually get larger as the price rises. If your maximum falls between increments, you may get stuck one step short. Look at the increment table in the sale terms or listen to how the auctioneer is calling bids, and choose a maximum that lands on a likely increment.

Some buyers prefer an odd number, one increment above a round figure, because other bidders often stop at round numbers. That is a personal choice; just make sure the extra increment still fits your budget.

Habits that help you stick to it

• Write it down. A number on paper is harder to ignore than one in your head.
• Use absentee or online maximum bids when you can. The system will stop at your limit even if you would not.
• Bring a set amount of money if you are paying with cash at a small local sale.
• Decide your walk-away point before the lot opens, not while the bidding is happening.
• Bring a friend who knows your limits and will remind you of them.
• Track your running total as you win lots so you know what remains of your overall limit.

When it is reasonable to adjust

Budgets are a guide, not a contract. It can make sense to change a limit before the sale if you learn something new, such as a better condition report, a confirmed signature, or a recent comparable sale. The key is to make the change calmly and in advance, for a clear reason, not in the moment because someone else is bidding.

If you go over budget at one sale, note what happened. Was it a lot you had not researched? A last-minute decision? That information will help you plan better next time.

Accept that you will lose some lots

Every experienced auction buyer loses lots they wanted. Another bidder may value an item more for reasons that have nothing to do with you. Losing a lot at a price above your limit is a sign that your budget worked. There are always more sales.

Quick checklist

• Research likely selling prices before setting limits.
• Set a total limit for the whole sale.
• Subtract premium, tax, transport and repairs from each item's value.
• Write your maximum hammer bid next to every lot.
• Adjust limits only before the sale, for a specific reason.
• Let lots go when the price passes your number.