What ROAS do I need to be profitable?

Break-even ROAS = 1 / gross margin. If your gross margin is 40%, you need ROAS of 2.5× just to break even after cost of goods — before any overhead or other costs. Most ecommerce brands target 3-4× ROAS to cover overhead and generate profit. The headline number (e.g. '5× ROAS') means nothing without margin context.

How is ROAS different from ROI?

ROAS = revenue / ad spend. ROI = (profit - investment) / investment. ROAS is a gross-revenue ratio; ROI accounts for cost of goods, shipping, overhead. A 5× ROAS with 10% margin is actually a money loser. ROI is the more rigorous metric but harder to calculate mid-flight.

What's break-even CPA?

The maximum you can spend to acquire one customer before losing money. For a $100 AOV with 40% gross margin, each customer generates $40 of contribution. Break-even CPA is $40. Push higher than that and you're subsidizing customers — which can still be fine if their lifetime value (LTV) justifies it.

ROAS Calculator (Return on Ad Spend + Break-Even CPA)

SEO & Marketing· 10 tools

Free ROAS calculator. Enter ad spend and revenue to get Return on Ad Spend as a ratio and percentage. Add your gross margin and you'll also see profit, profit margin, break-even ROAS, and break-even cost per acquisition (CPA). Use it to price campaigns, compare channels, and judge whether a ROAS number is actually profitable or just looks high.

Ad spend ($)

Revenue generated ($)

Gross margin (%)

Orders / customers (optional)

ROAS

4.00×

+300% vs 1× (break-even on revenue)

Break-even ROAS

2.50×

Minimum ROAS to cover COGS at 40% margin

Net profit

$3,000

Net margin: 15.0%

AOV (avg order value)

$200

Actual CPA

$50

Break-even CPA

$80

Gross profit (revenue × margin)$8,000

Ad spend−$5,000

Net profit$3,000

Break-even ROAS = 1 / gross margin. Above that you profit on each dollar spent; below that the campaign loses money no matter how good the "×" headline looks. Include CAC-payback and LTV for a full picture.

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