Break-even ROAS Calculator

What is break-even ROAS?

Break-even ROAS — also written breakeven ROAS, the same thing — is the point where your ads exactly pay for themselves: every dollar they earn covers both the ad cost and the cost of the product you sold, with nothing lost and nothing gained. Earn a higher ROAS than this and you're in profit; earn less and you're losing money on every sale, even though sales are coming in.

The useful part: it's set entirely by your profit margin. Know your margin and you know the exact ROAS you have to beat — which is why it's the first number to work out before judging whether any campaign is "good."

How to calculate break-even ROAS

To calculate break-even ROAS, divide 1 by your profit margin (written as a decimal):

Break-even ROAS = 1 ÷ profit margin

A 40% profit margin (0.40) gives a break-even ROAS of 1 ÷ 0.40 = 2.5× — so every $1 of ad spend has to bring back at least $2.50 in sales just to avoid a loss. The lower your margin, the higher that hurdle: a thin 20% margin needs a 5× ROAS, while a healthy 50% margin breaks even at just 2×.

A worked example

Say you keep 40 cents of every sales dollar after the cost of the product — a 40% margin. Your break-even ROAS is:

2.5× = 1 ÷ 40%

Breaking even isn't the goal, though — you want a profit. If you want $50 of profit for every $100 you spend on ads (a 50% return), switch the calculator to Target ROAS mode: (1 + 0.50) ÷ 0.40 = 3.75×. Now you know the exact ROAS to aim for, not just the one to survive at.

How to use this calculator

1. Pick a mode — Break-even (just avoid a loss) or Target ROAS (hit a profit goal).
2. Enter your profit margin. In Target mode, also enter the profit you want on your ad spend.
3. Read the ROAS you need. The result updates instantly as you type.
4. Use Copy shareable link to send the exact scenario to a colleague — the numbers are saved in the URL.

Break-even ROAS by profit margin

Because break-even ROAS is just 1 ÷ margin, you can read it straight off your margin. A quick lookup:

Why break-even ROAS matters

It turns a vague question ("is my ROAS good?") into a clear one ("is my ROAS above my break-even?"). A 4× ROAS sounds great, but at a 20% margin your break-even is 5× — so that campaign is quietly losing money. The same 4× at a 50% margin (break-even 2×) is very profitable. This is exactly why we never quote a single "good ROAS" number — see what is a good ROAS? for the full picture.

How to lower your break-even ROAS

There's only one lever: raise your profit margin. A higher margin lowers the ROAS you need to break even, giving every campaign more room to be profitable. You can do that by:

• Raising prices or reducing discounts, where the market allows.
• Lowering product costs — better sourcing, shipping or fulfilment.
• Increasing average order value so fixed costs spread over a bigger sale.

Once you know your break-even, use the ROAS calculator to check where a campaign actually lands, and the Campaign Forecast to model profit before you spend. For the levers that push your real ROAS up, see how to increase ROAS.

Use the right margin (what break-even ROAS leaves out)

The formula uses your profit margin, and the answer is only as honest as the margin you put in. If you use your gross margin — sales price minus just the cost of the product — your break-even ROAS ignores everything else it takes to run the business: shipping, payment fees, returns, and overhead like staff and software. A campaign that clears that gross break-even can still lose money once those are counted.

For a stricter, more truthful figure, use your contribution margin — what's left after all the variable costs of making and delivering one more sale, not just the product cost. It's a lower margin, so it gives a higher (safer) break-even ROAS to aim above. The rule of thumb: the more costs you fold into the margin, the more trustworthy your break-even number becomes.