MarginCore blog
Ecommerce profit guides for operators who need better decisions.
Practical articles on margin, ROAS, COGS, attribution, product profitability, refunds, shipping, reporting, and weekly operating habits.
Profit basics · 8 min read
How to Calculate Ecommerce Profit Margin
Learn how ecommerce profit margin works, which costs to include, and why net margin is more useful than revenue alone.
Advertising · 9 min read
ROAS vs Profit: What Ecommerce Teams Should Track
ROAS can make campaigns look healthy while profit falls. Learn how to connect ad performance with real contribution margin.
Profit basics · 8 min read
Contribution Margin for Ecommerce: A Practical Guide
Understand contribution margin for ecommerce products, channels, campaigns, and growth decisions.
Cost accounting · 7 min read
What Is True COGS in Ecommerce?
A clear guide to ecommerce COGS, landed cost, product cost, packaging, freight, and how COGS affects margin.
Platforms · 8 min read
Shopify Profit Tracking: What to Measure
Learn how Shopify stores can track profit beyond top-line sales, including COGS, fees, ad spend, refunds, and product margin.
Advertising · 8 min read
Meta Ads Profitability for Ecommerce
Use profit, contribution margin, and break-even targets to understand whether Meta Ads campaigns are actually working.
Advertising · 8 min read
Google Ads Profit Tracking for Ecommerce
Connect Google Ads spend with ecommerce revenue, product margin, and contribution profit for better scaling decisions.
Advertising · 7 min read
Break-Even ROAS Formula for Ecommerce
Calculate break-even ROAS from contribution margin and use it to set smarter campaign targets.
Growth metrics · 8 min read
Customer Acquisition Cost in Ecommerce
Understand ecommerce CAC, blended CAC, channel CAC, and how acquisition cost connects to profit.
Growth metrics · 7 min read
Blended CAC vs Channel CAC
Compare blended CAC and channel CAC for ecommerce growth decisions, budget planning, and profitability.
Product analytics · 8 min read
Product Profitability Analysis for Ecommerce
Analyze ecommerce product profitability by SKU, channel, margin, ad spend, refunds, and contribution profit.
Operations · 7 min read
How Inventory Costs Affect Ecommerce Profit Margin
Learn how inventory carrying costs, landed cost, stockouts, and slow movers affect ecommerce profit.
Marketplaces · 7 min read
Marketplace Fees and Ecommerce Profit
Understand how Amazon, Etsy, Walmart, eBay, and other marketplace fees affect true ecommerce profitability.
Attribution · 8 min read
Attribution vs Actual Profit in Ecommerce
Learn why attribution and profit reporting often disagree, and how operators can use both without making poor decisions.
Reporting · 8 min read
How to Build a Weekly Ecommerce Profit Report
Create a weekly ecommerce profit report that helps operators act on revenue, margin, spend, refunds, and product performance.
Reporting · 7 min read
Ecommerce KPI Dashboard: Metrics That Matter
Build an ecommerce KPI dashboard around profit, margin, ROAS, CAC, product performance, and data health.
Profit basics · 6 min read
Net Profit vs Gross Profit in Ecommerce
Compare net profit and gross profit for ecommerce stores, and learn when each metric is useful.
Operations · 7 min read
How Refund Rate Impacts Ecommerce Profit
Refunds can erase product margin. Learn how to measure refund impact by product, channel, and campaign.
Operations · 7 min read
Shipping Cost Allocation for Ecommerce Profit
Learn how shipping costs affect ecommerce margin and how to allocate them in profit reporting.
Operations · 9 min read
How to Build a Profit Operating System for Ecommerce
Build a repeatable ecommerce operating system around data quality, margin visibility, weekly decisions, and accountability.