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How do I know if my CPA is acceptable when I don't have a ROAS target yet?

Work backwards from gross profit. Your maximum acceptable CPA = gross profit per order. If your product sells for $59, costs $18 in COGS (product + shipping + Shopify fees), your gross profit is $41. That means your absolute maximum CPA to break even is $41 — and for a real profit margin, you want your CPA to be 60-70% of gross profit or lower (around $25-30 in this example). This is why calculating break-even ROAS before launching is mandatory. "Good CPA" is entirely relative to your margin, not to industry benchmarks.

Tactical FixUse the Break-Even ROAS calculator in Module 05 before your first campaign. Print your gross profit number on a sticky note near your monitor. Every CPA number you see in Ads Manager should be instantly compared to that number — not to someone else's niche.

See this in practice: Read Your Data

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