eBay Best Offer Calculator.
Turn your costs and target profit into a clear minimum offer. Use it before accepting or countering a Best Offer instead of guessing how low you can go.
Your profit floor
Find the lowest Best Offer you can accept while keeping the profit you want.
Estimate sales tax
Optional. eBay includes applicable sales tax in its final-value-fee base.
Minimum offer
Enter your costs and target profit to calculate a safe Best Offer floor.
Rates last verified: August 14, 2026. Uses current basic eBay.com category final value fees for a standard US seller without a Store subscription; advertising and account-specific extra fees are intentionally excluded. Gencyh is not affiliated with eBay.
A decision tool, not another fee calculator
The output is the minimum item-price offer that still reaches the net profit you enter. The calculator solves backwards through the current category fee schedule rather than simply showing a percentage fee on a known selling price.
Shipping charged to the buyer and your own shipping cost are kept separate. If you estimate sales tax, that amount is included in eBay's fee base while the tax itself is not treated as seller revenue.
What the minimum offer means
The calculated offer is a floor for the assumptions you entered. An offer below it is projected to miss your target profit, while an offer at or above it should meet the target under the modeled standard fee rules.
Promoted Listings, international charges, optional listing upgrades and seller-performance additions are excluded so the Best Offer decision stays easy to understand. If one of those applies, account for it before accepting an offer.
Frequently asked questions
How do I know the lowest eBay offer I should accept?
Start with product cost, shipping cost and the net profit you want. This calculator works backwards through the selected category fee schedule to find the minimum item price that reaches that target.
Why is sales tax optional?
The buyer's applicable sales tax varies by transaction. eBay includes applicable sales tax in the final-value-fee base, so entering an estimated tax rate can make the fee estimate more realistic for a likely buyer location.
Does this include Promoted Listings fees?
No. This calculator is designed for the Best Offer decision itself. Use the separate Promoted Listings Break-even Calculator when advertising cost is part of the sale.
What is the break-even offer?
It is the estimated item price where net profit reaches zero after the modeled eBay final value fee and the costs you entered.
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Official sources
Rates and rules used by this calculator are checked against the current official platform documentation linked below.