Break-even ROAS Calculator

Break-even ROAS is the minimum return on ad spend needed to cover your cost of goods sold (COGS), the point where ad-driven revenue pays for product delivery, not yet profit. If your gross margin is 50%, break-even ROAS is 2:1 ($2 revenue per $1 ad spend). Any ROAS below that loses money on variable costs alone.

Divide 1 by your gross margin as a decimal: Break-even ROAS = 1 ÷ Gross Margin. Examples: 40% margin → 1 ÷ 0.40 = 2.5:1; 75% SaaS margin → 1 ÷ 0.75 = 1.33:1; 20% margin → 1 ÷ 0.20 = 5:1. Enter your margin in this calculator for an instant result. This formula covers COGS only, add buffer for CAC, overhead, and profit targets.

Most SaaS products have gross margins of 70–85%, giving a break-even ROAS of roughly 1.18:1 to 1.43:1. That means SaaS ads can cover product costs at lower ROAS than e-commerce (often 40–60% margins). However, you still need to cover sales, marketing overhead, and R&D, so target ROAS well above break-even for true profitability.

Break-even ROAS is the floor, the minimum to cover COGS. Target ROAS adds a profit buffer on top. If break-even is 1.33:1 at 75% margin, a target of 1.6:1–2:1 covers COGS plus margin for acquisition overhead and profit. For subscription businesses, target ROAS should eventually reflect LTV, not just first-purchase or first-month revenue.

Break-even ROAS only covers product costs, not full acquisition or operating expenses. A 4:1 ROAS looks strong but may still lose money if margins are thin, returns and discounts are excluded, or attribution windows are too short to capture SaaS trial-to-paid revenue. Compare ROAS to break-even first, then layer in CAC payback and LTV for true ad profitability.