Formula: ROAS = Revenue from ads / Ad spend. So ₹3 revenue from ₹1 spent = 3x ROAS. Reported as a multiple, not a percentage.
ROAS is better for ads with direct attribution (Meta, Google, Amazon Ads) and worse for top-of-funnel (display, awareness). For full-funnel measurement, blended ROAS (revenue / total marketing spend) is more honest.
Industry ROAS benchmarks vary wildly: ecommerce often runs 3-5x, retargeting can hit 10-15x, prospecting 1.5-3x. SaaS uses MQL → SQL conversion plus deal-cycle ROAS instead.