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Max bid calculator.

Know the most you can pay before you bid at an auction, estate sale, or thrift store. Start from what the item actually sells for, and the calculator works backward through eBay fees, shipping, and buyer premiums to your ceiling.

eBay category fee presets
Auction buyer premium & tax
Profit and margin targets

Expected sale

Start with a realistic sold-comp price, not an asking price.

Buyer pays calculated shippingUse one postage estimate for what the buyer pays and what your label costs.

Expected item sale price

Estimated postage

Starts at $10 as a rough planning estimate; change it for this item's size, weight, and destination. Marketplace and ad fees still apply to the buyer's shipping payment.Packaging & other selling costs

Selling fees13.6% + $0.30 · advertising 0%

Choose an eBay.com category for a starting rate, or leave it on your editable shop estimate.

eBay Store planeBay item category

Preset applied. The $0.30/$0.40 per-order fee updates with the estimated order total. Rates are first-tier estimates; confirm exceptions, high-value tiers, and listing upgrades in eBay's standard fees or Store fees.

Marketplace fee

Filled from the selected eBay category. You can edit it.Fixed per-order fee

eBay estimate based on order total; edit if your order differs.Promoted listing / ad fee

For eBay general ads, estimated on item price, buyer shipping, and buyer sales tax.Estimated buyer sales tax

Only increases the fee base; sales tax collected by the marketplace is not counted as your revenue.

Buying costs

OLA links start with a 15% buyer premium and $2 fee. Saved or shared calculations keep your entered amounts. Tax and delivery are separate; all amounts are editable.

Buyer premium / auction fee

Percentage added to the winning bid, if any.Purchase sales tax

Estimated on the bid plus buyer premium; add tax on shipping as a fixed fee if applicable.Shipping to you

Handling & other checkout fees

Market demand (optional)Add matching sales evidence

Use only close matches for the same item and condition. This helps judge demand; it does not change your maximum bid.

Calculate from compsEnter eBay-reported rate

Sold in last 90 daysActive now

Sell-through = sold ÷ active, so it can pass 100%. An eBay-reported rate uses sold ÷ (sold + active) and is converted to match; eBay's 100% means nothing is active and can't be converted.

Your goal & current bid

Both targets apply; the stricter one sets the ceiling.

Minimum profit

Minimum margin

Optional income-tax reserve

A planning holdback from positive profit, not a tax calculation. Leave 0 if you track this separately.Current bid or paid price

For a live auction, enter the bid you are considering.

How the max bid is calculated.

The calculator starts with what a buyer will pay and removes everything that isn't yours to keep. What is left, after your profit goal, is the most the item can cost you.

Expected sale. Item price plus any shipping the buyer pays. Use sold listings, not asking prices.
Selling fees. The eBay final value fee, per-order fee, and any promoted listing rate, charged on the full order total.
Selling costs. Your shipping label, packaging, and supplies.
Profit goal. The larger of your minimum dollar profit or your minimum margin.
Buying costs. What remains is divided by any buyer premium and purchase tax, after subtracting shipping to you and checkout fees, to give the highest safe bid.

Worked example

An item sells for $60.00 on eBay in most categories (13.6% + $0.40), the buyer pays $10.00 calculated shipping, and packaging costs $1. You want at least $15.00 profit or a 25% margin, and the auction charges a 15% buyer premium.

Estimated selling fees: $9.92
Required profit: $15.00
Maximum bid: $29.63

25% of the $70.00 sale is $17.50, so the dollar target is stricter and sets the ceiling. With the buyer premium added, a $29.63 bid costs about $34.07 at checkout.

Max bid questions.

What is a max bid?

Your max bid is the highest price you can pay for an item and still make your minimum profit after it sells. It works backward from a realistic sold price: subtract marketplace fees, shipping, packaging, and your profit goal, then account for any buyer premium or sales tax on the purchase.

How much should I pay for items to resell?

Rules of thumb like paying a third of the resale price ignore fees and shipping, which vary a lot by item. A $20 item and a $200 item need very different buy prices. Calculate the ceiling for the specific item from sold comps, then pay less whenever you can.

Does the calculator include auction buyer premiums?

Yes. Enter the buyer premium percentage, purchase sales tax, handling fees, and shipping to you. The max bid is the hammer price, so the premium and tax are added on top when working out what you would actually pay.

Why does the calculator use both a profit and a margin target?

A flat dollar target protects cheap items, and a margin target protects expensive ones where a fixed $10 profit would not be worth the risk. The calculator uses whichever target is stricter.

Is the max bid calculator free?

Yes. It runs in your browser with no signup, and nothing you enter is saved. A free FlipHall account can also track what you actually paid and earned once the item sells.

Won the bid? Track what it actually earns.

A free FlipHall account records what you paid, connects to eBay, and shows the real profit when it sells, so your next max bid is based on your own numbers.

Track your flips free