Is this calculator specific to Shopify?

The math is ecommerce-specific and works especially well for Shopify stores because it includes the costs Shopify merchants usually need to model: COGS, payment fees, shipping, returns, ad spend, inventory, conversion rate, or repeat purchases depending on the tool.

Should I use gross margin or contribution margin?

Use contribution margin when you are making advertising, discount, or growth decisions. Gross margin is useful, but contribution margin is stricter because it accounts for variable costs like payment fees, fulfillment, shipping, returns, and app costs.

Why does the tool use default values?

Defaults make the calculator useful immediately and show the shape of the result before you enter your own numbers. Replace them with your store's actual numbers before making a final decision.

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Shopify Fee Calculator

Estimate Shopify payment fees, transaction fees, subscription cost, app costs, fee per order, and platform cost as a percent of revenue.

Shopify fee calculator

Estimate payment processing, subscription, app, and transaction fees so you can see the platform cost per order.

Monthly orders

Average order value

Monthly Shopify plan

Monthly app costs

Payment fee

Fixed payment fee

Extra transaction fee

Total monthly fees

$3,071

Fee per order

$2.56

Percent of revenue

3.8%

Payment fees

$2,726

Fixed platform costs

$345.00

Use fee per order as a real variable cost in pricing, discount, and ROAS math. App costs are not fixed if every order relies on them.

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About this tool

What this free tool calculates

Use this when app subscriptions and payment fees make contribution margin hard to read. It turns monthly platform costs into fee per order.

How to use the result

The calculator combines payment percentage fees, fixed payment fees, extra transaction fees, Shopify plan cost, and monthly app costs.

Use fee per order inside profit, discount, and AOV calculations so platform cost does not hide below the gross margin line.

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Why the calculator stays input-driven

This free ecommerce tool does not guess demand, scrape competitors, or invent benchmarks. Change the numbers to match your store, then use the result to decide whether a product, campaign, discount, or inventory move is worth doing.

Frequently Asked Questions

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Calculate the true cost of ecommerce returns from return rate, reverse shipping, restocking, resale markdown, AOV, and margin.

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Find the average order value needed to hit a target profit per order after margin, payment fees, and shipping subsidy.