Free tools / Store Profit Calculator
Your real profit, after everything.
Revenue looks great until you subtract product cost, ads, shipping, fees and returns. Enter one month of numbers and see what you actually keep.
Real monthly profit
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See these numbers live, every day, without a spreadsheet — that's what a Kastana Data dashboard does.
WhatsApp usWhatsApp usHow we calculate: profit = revenue − product cost − returns − payment fees − shipping × orders − ad spend − fixed costs. Break-even ROAS is how much revenue each 1 spent on ads must bring back before the ads stop losing money, after product cost, returns, fees and shipping. Nothing you type is sent anywhere.
FAQ
Common questions.
What is break-even ROAS?
Break-even ROAS is the return on ad spend you need just to cover the costs of each sale — product cost, returns, payment fees and shipping. If your ROAS is below it, every sale from ads loses money, even if revenue looks good.
Why is my profit lower than revenue minus ad spend?
Because every order also carries product cost, shipping, payment fees and a share of returns — and the business has fixed costs. Many stores only track revenue and ad spend, which hides these.
What is a good profit margin for an online store?
It varies a lot by category, price point and how much you spend on ads. The more useful check is whether your ROAS stays above break-even and whether profit grows month after month.
Is my data saved or sent anywhere?
No. The calculator runs entirely in your browser. Nothing you type is stored or sent to us.
Want us to make it for you?
Book a free 30-minute consultation — or message us on WhatsApp.