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📊 Marjn

Shopify Profit &
True Margin Guides

Why revenue is not profit, how to calculate your true margin with landed cost and ad spend, break-even ROAS, and why the products you sell most might be losing you money.

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Line-by-line Shopify profit-and-loss breakdown from revenue down to net profit
Shopify12 min readAug 21, 2026

Why Is My Shopify Store Not Profitable? The Real P&L Breakdown

Revenue is up but the bank account is not. The full line-by-line P&L of a Shopify order, from the gross sale down to what is left, with real 2026 numbers.

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Waterfall from $18,400 revenue to a $1,082 loss showing why a 3.8 ROAS lost money
Ad Spend10 min readAug 21, 2026

Why a 3.8 ROAS Still Lost $1,082: The Break-Even ROAS Trap

A great-looking ROAS that lost money, explained line by line, plus the break-even ROAS formula that tells you your real floor per product.

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A top-selling product losing money per order after discounts and ad spend
Margin10 min readAug 21, 2026

Your Bestseller Is Your Biggest Loser: The Hidden Margin Trap

The products you promote hardest carry the heaviest discount and ad load, so a bestseller can lose money on every sale. Why it happens and how to spot it.

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