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A–Z eCommerce Decision Intelligence. Decision frameworks, system blueprints, and cost realities for eCommerce operators.

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Decision Tools

Interactive Calculators

The frameworks from our articles, built as interactive tools. Enter your numbers, get clarity — then read the thinking behind each one.

📊

Break-Even Calculator

When does this business actually start making money?

Input revenue, costs, and margins to reveal your real break-even point — the one most P&Ls hide.

Open the calculator →Read the framework
💸

CAC Calculator

What does it really cost me to acquire one customer?

Most operators undercount CAC by 40–60%. This adds the hidden inputs back in and shows the full number.

Open the calculator →Read the framework
🔧

Tool Stack Audit

How much is my software stack really costing me?

Map every tool and surface the integration costs. Most operators find 30–40% more tools than they thought.

Open the calculator →Read the framework

What these calculators reveal

Every calculator exists to surface a number operators usually get wrong.

40–60%

how much operators typically undercount their CAC before adding hidden inputs.

30–40%

more tools in the average stack than operators estimate from memory.

1 number

the break-even point that decides whether to scale, hold, or cut — most P&Ls bury it.

Related decision frameworks

The full thinking behind each calculator.

All frameworks →
Cost AnalysisMed

Break-Even Math: When Does Your eCommerce Business Actually Make Money?

At what monthly order volume does your store actually break even?

For Founder, Finance Lead10 min
Cost AnalysisMed

Your Customer Acquisition Cost Is Probably Wrong

Are you calculating CAC at half its real number?

For Marketing Lead, Finance Lead6 min
Cost AnalysisMed

The Real Cost of Your eCommerce Tool Stack

What is your tool stack really costing once integration and switching are counted?

For Operator, Finance Lead7 min

Prefer a ready-to-use worksheet?

The same frameworks, packaged as templates you complete in under 90 minutes.

Browse the templates →

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