Ecommerce profitability calculator
Ecommerce ROAS Calculator
A strong ecommerce ROAS can still lose money when COGS, shipping, payment fees, discounts, and refunds are ignored. Use this calculator to connect ad performance with contribution profit.
How it works
Use the tool in three steps
Keep the reporting period consistent across ad spend, attributed revenue, orders, and costs. The calculator updates the result when you calculate again.
Practical decision guide
How to use this ecommerce roas calculator
The ecommerce roas calculator is most useful when it supports a specific decision: whether to scale, change the offer, reduce an acquisition cost, or pause a campaign for better data. Keep the inputs visible and explain what the result includes before sharing it with a client or team.
Use this ecommerce roas calculator when a revenue-only result is too incomplete for an operating decision. Ecommerce stores often pay several costs on every order, so a campaign can report attractive ROAS while leaving too little contribution margin to cover refunds, support, overhead, and future growth.
The most useful ecommerce analysis keeps order economics close to the campaign report. Enter the same period for revenue, spend, and orders, then use realistic average costs rather than the best case from a single order. This makes the calculator a planning tool for offers, channels, products, and budget changes.
Run a conservative scenario alongside your expected scenario when costs are uncertain. Comparing a normal result with higher shipping, refund, or discount assumptions shows how much operating room the campaign really has before a budget increase becomes risky.
Before making a budget change, compare the calculated result with the full business context. Attribution can move, costs can change, and a result based on a short window may not represent mature customer behavior. Use the ecommerce roas calculator as a clear starting point, then validate the assumptions with order and financial data.
For recurring reviews, create a simple habit around the output. Check whether the numbers are complete, compare actual ROAS with the break-even or target threshold, and then inspect the cost lines that changed. If the result moves sharply, identify whether the cause was ad spend, conversion rate, average order value, supplier cost, or attribution. Recording the campaign name, date range, currency, attribution window, and whether the result is platform-attributed or blended makes later comparisons much safer.
Checks that improve the result
Transparent methodology
Why ecommerce ROAS needs cost inputs
Basic ROAS only compares revenue with ad spend. Ecommerce profitability requires contribution margin: revenue per order minus variable costs per order. Break-even ROAS is average order value divided by contribution margin per order.
The important distinction
Basic ROAS tells you how much attributed revenue came back for each currency unit spent on ads. Break-even and target ROAS add your unit economics, so they are more useful when the question is “can I scale this profitably?”
Accuracy and limitations
This tool is designed for planning and decision support. Use consistent numbers, check attribution settings, and compare the result with your full business P&L before making a large budget change.
- Use consistent attribution and order windows. Mixing platform revenue with total store orders can make the result look better or worse than reality.
- The calculator does not automatically include fixed salaries, rent, tax, software subscriptions, or inventory financing unless you model them as other costs.
FAQ
Questions about ROAS calculations
What is the difference between ROAS and ecommerce profit?
ROAS measures attributed revenue relative to ad spend. Ecommerce profit also depends on product cost, fulfillment, payment fees, refunds, discounts, overhead, and taxes.
Can I include payment fees in ecommerce ROAS?
Yes. Enter the average payment fee per order in the advanced cost inputs. You can include other variable costs such as packaging, returns, or marketplace fees in the same model.
What is a profitable ecommerce ROAS?
A profitable ROAS is above your break-even ROAS by enough to cover your target profit and business overhead. It is determined by your contribution margin, not by a universal 2x or 3x rule.
Does this work for Shopify stores?
Yes. Use Shopify revenue and order data for the same period, then enter the per-order costs that apply to your products and fulfillment model.