What is a break-even ROAS calculator and when to use it
A break-even ROAS calculator finds the return on ad spend at which a campaign makes exactly zero profit and zero loss. ROAS is revenue divided by ad spend; a break-even ROAS of 2.5 means you need $2.50 in revenue for every $1 spent on ads to cover product cost, payment fees and fulfillment. Below that ROAS, the campaign loses money per unit. This minimum ROAS threshold is different for every business because cost structures vary. The ROAS profitability calculator handles ecommerce and app installs differently (subscription lifetime value vs. one-time purchase).
Ecommerce managers and app marketers use a ROAS profitability calculator before scaling spend. Many campaigns at 2.0 or 2.5 ROAS feel good until you account for payment processing, shipping, refunds, customer service and overhead. A proper break-even ROAS analysis shows you the minimum threshold, then helps you decide how much profit margin you want above breakeven before you scale.
contribution margin = price - cost of goods - payment fees - other variable cost
break-even ROAS = price / contribution margin
max cost per order = contribution margin
max cost per install = contribution margin x install-to-paid rate (app mode)
ROAS for X% net = 1 / (margin% - X%)
ROAS is revenue divided by ad spend. Break-even ROAS is the point where the profit on the revenue the ads produced exactly equals what you paid for the ads. It depends only on your margin. A 40% contribution margin gives a 2.5x break-even, a 25% margin gives 4x, a 60% margin gives 1.67x.
A worked example
An $80 order with $30 cost of goods, 3% payment fees ($2.40) and no other variable cost:
- Contribution margin = 80 - 30 - 2.40 = $47.60, which is 59.5%
- Break-even ROAS = 80 / 47.60 = 1.68x
- Maximum cost per order = $47.60
- At a 2.5x ROAS on $10,000 a month: revenue $25,000, margin $14,875, profit $4,875
App mode: a paying user worth $80 with a 30% store fee and a 4% install-to-paid rate gives a $56 margin per payer and a maximum cost per install of $2.24. If your CPI is above that, the funnel loses money before anyone pays.
Meta and Google report ROAS because revenue is what their pixel can see. They cannot see your cost of goods. A 3x ROAS is a great campaign for a 60% margin product and a loss for a 25% margin product. The same number means opposite things.
Three habits fix this:
- Set the campaign target at break-even ROAS times 1.3, not at a round number someone picked.
- Watch marginal ROAS as you scale. The average stays fine long after the last $1,000 of spend has gone below break-even.
- Recalculate whenever price, shipping or fees change. Most teams set the target once and never touch it.
Break-even ROAS for apps is a CPI problem
For apps the chain is longer: install, activate, trial, pay. Ad platforms optimise to installs, so the number you actually control is cost per install. Work backwards: margin per paying user, times the install-to-paid rate, is the most you can pay per install. A subscription app with a $40 first-year value after store fees and a 3% install-to-paid rate can pay $1.20 per install and no more.
The subscription app LTV calculator takes churn into account and gives a lifetime figure rather than first payment.
How to use this break-even ROAS calculator
- Choose What are you selling?.
- Enter Average order value or price: Product mode: average order value.
- Enter Cost of goods per order: Product cost, shipping you pay for, packaging.
- Enter Payment and platform fees: Card processing, marketplace fee.
- Enter Other variable cost per order: Returns allowance, support cost, packaging.
- Enter Install-to-paid rate: Share of installs that become paying users.
- Enter Your current ROAS (optional): Revenue divided by ad spend.
- Enter Monthly ad spend (optional).
- Read Break-even ROAS, which updates as you type: Below this you lose money on every order.
- Check the supporting figures: Contribution margin, Margin per order, Maximum cost per order, Maximum cost per install (app mode).
- Read the verdict under the result. It says what the number means for you and what to change first.
- Use Copy results to paste the figures anywhere, Copy link to this result to share the exact scenario, or Embed on your site to put the calculator on your own page.
Questions people ask
What is a good ROAS?
One above your break-even with room to spare. There is no universal number. A 4x ROAS is a loss at a 20% margin and a strong result at a 50% margin. Compute your break-even first, then aim for 1.3x to 2x that.
Should I include fixed costs in break-even ROAS?
No. Break-even ROAS is a per-order decision: does this order make money after the ad that produced it. Fixed costs (salaries, rent, software) are covered by the total margin across all orders, so they belong in a monthly P and L, not in the ROAS target.
Is break-even ROAS the same as 1 divided by margin?
Yes. Price divided by contribution margin is the same as 1 divided by margin percentage. A 40% margin gives 1 / 0.4 = 2.5x.
What about returning customers?
If a customer buys again without another ad, that revenue lowers your true break-even. Use lifetime margin instead of first-order margin in the price field if you have reliable repeat data. Be honest about it, because this is where most optimistic ROAS targets come from.
How do I use this for Google Ads target ROAS bidding?
Google expresses target ROAS as a percentage. A 2.5x break-even is 250%. Set the bid target at break-even times 1.3 or more, expressed as a percentage, and lower it only when the conversion value you send Google is already net of fees and returns.
Is a 2x ROAS profitable?
Depends on your margins. If your break-even ROAS is 1.8, then 2x is profitable. If it is 2.5, then 2x loses money. Use this calculator to find your breakeven first, then set a profit target (e.g. 3.5x) before scaling spend.
How do I calculate break-even ROAS for a subscription app?
Subscription break-even is different: you need customer lifetime value, not just the first purchase. Choose the app mode in the calculator, enter your subscription price and estimated customer lifetime (years or months), and the ROAS breakeven calculator will show your minimum ROAS based on LTV.
Sources
Last reviewed 23 September 2026. Formulas and benchmarks are published on the page so you can check them. This tool gives estimates, not quotes.
