Maximum CPA
Treat pre-ad contribution as the hard acquisition ceiling for a first-order model.
Decision map
Use the number to answer a business question.
Each tool on Profit Per Order exposes its assumptions. The purpose of this hub is to connect those formulas instead of treating every metric in isolation.
Free tools
Calculate with your own inputs.
Worked guidance
Read the model before you use the threshold.
These guides use explicit formulas, assumptions and worked examples. They are planning references, not market benchmarks.
Free Shipping Threshold Examples for Three Margin Profiles
Compare low-, medium- and high-margin products to see why one universal free-shipping threshold can quietly destroy contribution.
Break-even CPA vs Target CPA for Ecommerce
Separate the absolute acquisition ceiling from the CPA that still leaves a chosen contribution target, using the same order-cost stack for both.
Shopify Profit per Order Checklist: Costs Most Stores Miss
Reconcile revenue, COGS, payment fees, fulfillment, shipping, returns, apps, discounts and acquisition into one contribution view before scaling a store.
Ecommerce Unit Economics Audit: A 30-Minute Checklist
Run one repeatable monthly check from source documents through order contribution, break-even acquisition, returns, fixed costs and a downside scenario.
Why Fixed Payment Fees Hurt Low-AOV Products
See how a cents-per-order payment charge raises the effective fee rate on inexpensive products, then test price floors, bundles and minimums.
Contribution Margin vs Gross Margin: Ecommerce Formula & Example
Use the right profit layer for pricing, advertising and operating decisions—and avoid treating gross margin as money available for ads.
Free Shipping Threshold: Calculate the AOV That Protects Margin
Solve the minimum order value needed to fund seller-paid shipping without confusing revenue lift with contribution lift.
How to Calculate Break-even ROAS from Real Order Costs
Turn a complete order-cost stack into a defensible maximum CPA and break-even ROAS instead of relying on gross margin alone.
Adjacent decision areas
Follow the economics into the next constraint.
Profitability, pricing, acquisition, sourcing and inventory interact. These hubs keep the next calculation one click away without mixing unrelated search intent on the same page.