Ecommerce growth topic

Ecommerce Margin and Profitability Tools

Calculators and guides for break-even ROAS, contribution margin, free shipping thresholds, CAC, LTV, and order economics.

Best first move

Start with the margin or break-even ROAS calculator, then compare the result with the matching worked example.

How to use this collection

Use this collection before changing ad budgets, shipping thresholds, prices, or acquisition targets.

Start with the page that matches the decision in front of you. Use calculators for numbers, guides for context, and templates when the work needs to be handed to a teammate, agency, or future review.

Tools

Break-Even ROAS Calculator Know the ROAS floor before increasing budget on Google, Meta, TikTok, or affiliate campaigns. Ecommerce Profit Margin Calculator Model whether an order is profitable after the costs ecommerce teams actually feel. Free Shipping Threshold Calculator Set a shipping threshold from AOV, gross margin, shipping cost, and target basket lift. LTV:CAC Ratio Calculator Understand whether customer acquisition economics are healthy enough to scale.

Guides

Break-Even ROAS Explained Use contribution margin to decide whether ad spend can scale profitably. CAC Vs CPA Separate first-order acquisition economics from campaign-level conversion costs. LTV:CAC For DTC Brands Model acquisition quality with repeat purchase behavior and gross-profit LTV. Free Shipping Threshold Guide Choose a threshold from order economics, not a copied competitor number.

Templates and examples

ROAS Calculation Example Use example math to avoid scaling unprofitable campaigns.