ROAS (Return on Ad Spend) = revenue from ads ÷ ad spend. Spend 1,000 and make 4,000 back → ROAS 4x. Simple — but 4x is not automatically 'profitable'.
Break-even ROAS = 1 ÷ profit margin. If your product margin (excluding ads) is 25%, break-even is 1 ÷ 0.25 = 4x. Below 4x you lose money even though revenue looks great.
Margin 30% → break-even 3.33x. Your campaign runs at 2.8x? You're paying customers to buy. At 4.5x? Every ad lira returns profit — scale it.
Bottom line: know your margin, compute your break-even ROAS, and judge every campaign against that line — not against gut feeling. Our free ROAS calculator on the Tools page does the math for you.