eBay Profit Calculator Formula
Learn how the eBay Profit Calculator estimates profit, margin, fees, breakeven price and target sale price.
This page explains the math behind an eBay profit estimate. It shows how buyer-paid revenue, selling fees, item cost, shipping and other costs combine to affect your net profit and pricing decisions.
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Net Profit
Where:
Add the item price and shipping paid by the buyer to get total revenue. Then subtract item cost, your shipping cost, other selling costs, the percentage-based eBay fee and the fixed fee.
Variables Explained
| Variable | What It Means | Unit |
|---|---|---|
| salePrice - Sale price | The item price paid by the buyer before sales tax. | currency |
| shippingCharged - Shipping charged to buyer | The shipping amount the buyer pays you. | currency |
| itemCost - Item cost | Your cost of goods or production cost for the item. | currency |
| shippingCost - Your shipping cost | What you expect to pay for postage, labels and packaging. | currency |
| otherCosts - Other costs | Extra selling costs such as promoted listing fees, supplies or returns allowance. | currency |
| ebayFeePercent - eBay fee rate | Estimated percentage fee applied to the buyer-paid amount. | percent |
| paymentFixedFee - Fixed fee per order | Any fixed transaction fee charged per order. | currency |
| targetProfit - Target profit | The profit amount you want to achieve. | currency |
Step-by-Step Calculation
Calculate gross revenue
This is the total amount received from the buyer, excluding sales tax.
grossRevenue = salePrice + shippingCharged
Calculate the percentage-based eBay fee
The fee rate is applied to the total buyer-paid amount used in this estimate.
ebayFeeAmount = grossRevenue * (ebayFeePercent / 100)
Add the fixed fee
This combines the percentage fee and any flat fee per order.
totalFees = ebayFeeAmount + paymentFixedFee
Add all costs
This step gathers product cost, shipping expense, extra costs and selling fees.
totalCosts = itemCost + shippingCost + otherCosts + totalFees
Calculate net profit
Profit is what remains after subtracting all costs from the buyer-paid amount.
netProfit = grossRevenue - totalCosts
Calculate profit margin
Margin shows profit as a percentage of gross revenue.
profitMargin = netProfit / grossRevenue * 100
Find breakeven or target sale price
These formulas reverse the fee and cost logic to estimate the item price needed for zero profit or for a chosen profit goal.
breakevenSalePrice = (itemCost + shippingCost + otherCosts + paymentFixedFee - shippingCharged) / (1 - ebayFeePercent / 100) ; targetSalePrice = (itemCost + shippingCost + otherCosts + paymentFixedFee + targetProfit - shippingCharged) / (1 - ebayFeePercent / 100)
Worked example for a typical eBay sale
Gross revenue
50.00 + 5.00
$55.00
eBay fee amount
55.00 × 0.1325
$7.29
Total fees
7.29 + 0.30
$7.59
Total costs
20.00 + 6.00 + 0.00 + 7.59
$33.59
Net profit
55.00 - 33.59
$21.41
Profit margin
21.41 ÷ 55.00 × 100
38.9%
Breakeven item price
(20.00 + 6.00 + 0.00 + 0.30 - 5.00) ÷ (1 - 0.1325)
$24.55
Final Result
Estimated profit is $21.41, profit margin is 38.9%, and the breakeven item price is about $24.55.
Assumptions
- ✓The percentage fee applies to the total amount paid by the buyer for the item and shipping entered here.
- ✓Sales tax is excluded from the calculation unless you add a related cost manually to other costs.
- ✓The fixed fee is charged once per order.
- ✓Breakeven and target sale price estimates assume the same shipping amount charged to the buyer remains unchanged.
Limitations
- !Actual eBay fees can vary by category, country, account type and optional services.
- !The calculator does not automatically include refunds, disputes, currency conversion or tax effects.
- !If gross revenue is zero, profit margin is not meaningful.
- !Real shipping costs can differ from estimates because of package weight, dimensions or carrier surcharges.
Common Mistakes to Avoid
Entering only the item price and forgetting to include shipping charged to the buyer.
Using your shipping charge instead of your actual shipping cost in the cost field.
Leaving promoted listing fees, packaging supplies or return allowances out of other costs.
Using an outdated fee percentage that does not match your category or account.
Comparing profit across items without using the same assumptions for fees and shipping.
Related Formulas
Frequently Asked Questions
What is the main formula for eBay profit?
A simple profit estimate is gross revenue minus all costs. Gross revenue is sale price plus shipping charged, and total costs include item cost, shipping cost, other costs, percentage fees and any fixed fee.
How do you calculate eBay fees in this formula?
The percentage fee is estimated as gross revenue multiplied by the eBay fee rate divided by 100. A fixed fee per order is then added.
Why is shipping charged included in revenue?
Because it is money paid by the buyer as part of the transaction. In many fee estimates, that amount also affects the percentage-based fee.
How is profit margin calculated for an eBay sale?
Profit margin is net profit divided by gross revenue, multiplied by 100 to convert it to a percentage.
How do you calculate breakeven sale price on eBay?
The breakeven item price is found by rearranging the profit formula so profit equals zero, while keeping shipping charged, fee rate and fixed fee the same.
How do you calculate the item price needed for a target profit?
Add the desired target profit to the cost side of the equation, then solve for the item price using the same fee and shipping assumptions.
Ready to calculate your result?
Use the calculator to get instant results with your own inputs.