SignalSprout

Profitability before vanity metrics

Break-even ROAS Calculator

A campaign can show positive ROAS and still lose money. Use gross margin to calculate the minimum return your ads must produce.

✓ Private by default: calculations run in your browser and inputs are not uploaded.

Enter your gross margin to find the minimum ROAS required to avoid losing money on ad spend.

Break-even ROAS

2.50×

Every $1 in ad spend must generate $2.50 in revenue.

How to use it

  1. Enter gross margin as a percentage.
  2. Calculate the break-even ROAS.
  3. Compare this threshold with actual ROAS from the same attribution period.

Method and formula

Simplified break-even ROAS = 1 ÷ gross margin as a decimal. A 40% margin is 0.40, so 1 ÷ 0.40 = 2.5×.

Worked example

At a 25% gross margin, break-even ROAS is 4×. A campaign returning 3.5× does not cover the product cost under this simplified model.

Limitations

  • This simplified model excludes fixed costs, agency fees, payment fees, returns, taxes and lifetime value.
  • Gross margin should be based on the revenue and variable product costs attributable to the same sales.
  • Use a contribution-margin model when other variable costs are material.

Method reviewed September 22, 2026