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Finance Calc Kit
Business

Selling Price Calculator

Calculate the optimal selling price for online marketplace items including item cost, shipping, selling fees, transaction fees and sales tax.

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Costs

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$

Fees

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$
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$

Pricing

$
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Selling price

$75.88

List this price on your item

Item cost

$16.00

Shipping cost

$6.99

Selling fee

$12.43

Transaction fee

$2.65

Total cost

$38.07

Revenue

$76.13

Profit

$38.07

After all costs and tax

Buyer total

$85.62

Price + shipping + tax

Margin

50.00%

Markup

100.00%

Revenue breakdown

Revenue$76.13
  • Item cost$16.0021.0%
  • Shipping cost$6.999.2%
  • Fees$15.0819.8%
  • Profit$38.0750.0%
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What is a selling price calculator?

A selling price calculator helps online marketplace sellers find the list price needed to hit a profit goal after item cost, shipping, marketplace fees, payment processing fees, and sales tax. Instead of guessing a price and hoping fees leave enough margin, you set a target return and the calculator works backward to the required selling price.

This is especially useful on platforms like Amazon, eBay, Etsy, and Shopify where fees scale with the item price and shipping charge. For simple markup on cost without fees, use the markup calculator. To model PayPal processing fees directly, try the PayPal fee calculator. For Etsy-specific listing and transaction fees, use the Etsy fee calculator. When you already know a sale price and want the discount from list price, use the sale price calculator.

How selling price is calculated

The calculator solves for the item selling price where your chosen target is met. Revenue is the amount you keep after sales tax is collected from the buyer:

Revenue=Selling Price+Shipping Charge−Sales Tax\text{Revenue} = \text{Selling Price} + \text{Shipping Charge} - \text{Sales Tax}

Total cost includes your product cost, outbound shipping, marketplace selling fees, and payment transaction fees:

Total Cost=Item Cost+Shipping Cost+Selling Fee+Transaction Fee\text{Total Cost} = \text{Item Cost} + \text{Shipping Cost} + \text{Selling Fee} + \text{Transaction Fee}

Profit is revenue minus total cost. The calculator then checks your target:

Profit=Revenue−Total Cost\text{Profit} = \text{Revenue} - \text{Total Cost}

Margin, markup, and fixed profit targets

You can target any of three return types. Margin divides profit by revenue. Markup divides profit by total cost. A fixed profit target sets a dollar amount you want to keep:

Margin %=(ProfitRevenue)×100\text{Margin \%} = \left(\frac{\text{Profit}}{\text{Revenue}}\right) \times 100
Markup %=(ProfitTotal Cost)×100\text{Markup \%} = \left(\frac{\text{Profit}}{\text{Total Cost}}\right) \times 100

Because fees and tax depend on the selling price itself, there is no single closed-form formula when all inputs are included. The calculator uses an iterative search to find the price that satisfies your target.

Worked example

Suppose you source an item for $16, pay $6.99 to ship it, and charge the buyer $5 for shipping. Your marketplace takes 15% plus $0.30 on the item price plus shipping charge. Payment processing is 2.9% plus $0.30 on the same total. Sales tax is 6.25% on the item price only, and you want a 50% profit margin.

  • Item cost: $16.00
  • Shipping cost (you pay): $6.99
  • Shipping charge (buyer pays): $5.00
  • Target margin: 50%

The calculator returns a selling price of about $75.88. At that price, selling and transaction fees total roughly $15.08, revenue after tax is about $76.13, and profit is about $38.07, which is 50% of revenue. The buyer pays about $85.62 including shipping and tax.

Key pricing components

  • Item cost: What you pay to acquire or produce the product, including materials and labor.
  • Shipping cost: Your outbound shipping expense to deliver the order.
  • Shipping charge: The amount the buyer pays for shipping, which may be included in fee calculations.
  • Selling fee: Marketplace commission, usually a percentage of item price plus shipping plus a fixed per-order fee.
  • Transaction fee: Payment processor charge, typically a percentage plus a fixed amount per transaction.
  • Sales tax: Tax collected from the buyer. Whether tax applies to shipping varies by state and platform policy.

Frequently asked questions

What is the difference between margin and markup?
Margin is profit divided by revenue. Markup is profit divided by total cost. If an item costs $50 in all expenses and you keep $50 profit on $100 revenue, margin is 50% but markup is 100%.
Should I charge sales tax on shipping?
Rules vary by state. Some states tax shipping charges and others do not. Check your state revenue department guidance and your marketplace tax settings before enabling tax on shipping.
What are typical marketplace selling fees?
Fees differ by platform and category. Etsy charges a transaction fee near 6.5% plus listing fees. Amazon referral fees often range from 8% to 15%. eBay final value fees are commonly around 13% for many categories. Payment processing is often near 2.9% plus $0.30 per order.
How do I choose a target profit margin?
Start with industry benchmarks, then adjust for overhead, advertising, returns, and your desired net income. Many online sellers aim for 30% to 50% gross margin before operating expenses.
Can I use this for multiple sales channels?
Yes. Each channel has different fee structures. Enter the selling fee and transaction fee for each platform separately to compare the list price required on Amazon, Etsy, eBay, or your own store.
Are results stored on a server?
No. All math runs in your browser. Changing inputs updates the page URL so you can bookmark or share a specific scenario.

Resources and references

The formulas and methods in this calculator were checked against these independent sources.