True ecommerce profit calculator

Is your product actually profitable?

CartTruth shows what your order really earns after ads, payment fees, shipping, discounts, and returns.

Calculate true profit See example

No login. No spreadsheet. Runs in your browser.

30-second check

Calculate your real order profit

Enter rough numbers. CartTruth estimates your per-order economics and shows what is quietly eating margin.

Selling price Product cost Shipping cost Packaging / handling Payment fee % Fixed payment fee Ad cost per sale / CAC Discount % Return rate % Loss per returned order

Currency is flexible: dollars, euros, pounds — use one currency consistently.

What CartTruth checks

Revenue is not profit.

Shows whether paid acquisition still works after your true per-order costs.

Fees

Accounts for percentage and fixed payment fees that quietly lower margin.

Returns

Estimates expected return loss instead of pretending every order is clean.

Discounts

Shows how much promotions cut into your real profit before scaling.

FAQ

Common questions

Is this a replacement for accounting software?

No. CartTruth is an estimation tool for product decisions. Use accounting software or an accountant for official reporting, taxes, and bookkeeping.

What is break-even CAC?

The maximum customer acquisition cost you can pay before the order stops making profit, based on the numbers entered.

What is break-even ROAS?

An estimated return on ad spend needed to avoid losing money. Lower margins require higher ROAS.

Does CartTruth store my numbers?

No. This first version runs in your browser and does not send calculator inputs to a server.