ROAS: what it is and how to judge return on ad spend

ROAS means return on ad spend: attributed revenue divided by advertising spend. For example, US$ 12,000 of attributed revenue from US$ 3,000 in ads produces a ROAS of 4. That is four dollars of attributed revenue per dollar of media, not four dollars of profit. Product costs, fulfillment, fees, returns and payroll can change whether that campaign actually supports the business.

Formula

ROAS = attributed revenue ÷ ad spend.

Keep the same currency and identify the attribution window. A multiple of 4 can also be written as 400%, but choose one format consistently. With no spend, a calculated return from this division is undefined.

Do not add platform ROAS values. Also avoid presenting the sum of Meta and Google attributed revenue as unique store revenue: both may claim the same order.

What makes a good number

Start with contribution margin before media. In a simplified model, media break-even ROAS equals one divided by that margin as a decimal. These are illustrative examples:

This threshold does not automatically cover fixed costs or desired profit. Include returns and discounting in the margin assumptions, and consider whether the sales are from new or returning customers. A very high ROAS on tiny spend may contribute less cash than a larger sustainable campaign.

What changes the number

Average order value, conversion rate, delivery cost and product mix can move ROAS. So can a broken purchase value, duplicated event or changed attribution setting. Verify the underlying orders before treating an abrupt increase as a breakthrough.

For lead generation, an arbitrary assigned lead value is not realized revenue. Track CPL and reconcile qualified opportunities and sales separately. A forecast can be useful, but label its assumptions and do not present it as collected cash.

Reconcile before scaling

Compare attributed sales with actual orders, refunds and the reporting window. The guide to Meta and Google Ads in one dashboard explains why platform totals need separate labels. Use the paid media reporting workflow to review return with spend and volume, then set a target that reflects your actual economics rather than a universal multiple. And to see how much of your whole revenue depends on advertising, rather than only what the campaign claims, see ROAS or TACoS.