Break-Even ROAS Calculator
Know the exact return on ad spend you need before an ad campaign starts losing money, from your average order value and profit margin. Instant, no email.
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Break-even is the floor before you scale, not a target. Anything above your break-even ROAS is profit, anything below it is loss. Figures use your gross profit margin and exclude other fixed costs, so treat them as a planning guide, not a guarantee.
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From margin to the number you cannot go below
Break-even ROAS is simpler than it looks. It comes down to how much revenue each ad dollar returns, how much profit sits in each sale, and where the two meet.
1. ROAS is revenue over spend
Return on ad spend is simply revenue divided by ad spend. A 4x ROAS means four dollars back for every dollar spent, before you account for the cost of what you sold.
2. Break-even ROAS is 1 over your margin
Divide one by your gross profit margin and you get the ROAS where ad revenue exactly covers cost of goods plus ad spend. A 40 percent margin lands at 2.5x.
3. Above it is profit, below it is loss
This is the floor before you scale, not a goal. Organic search from SEO has no per-sale ad cost, so it sidesteps this maths entirely.
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Questions about break-even ROAS
Break-even ROAS is the return on ad spend at which your ad revenue exactly covers the cost of the goods and the ad spend, so you make no profit and no loss. It equals 1 divided by your gross profit margin. If your margin is 40 percent, your break-even ROAS is 2.5x, meaning every dollar of ad spend must return at least 2.50 in revenue before the campaign starts making money.
ACOS, or advertising cost of sale, is ad spend divided by revenue, expressed as a percentage. It is the inverse of ROAS. Your break-even ACOS equals your gross profit margin, because at that point the share of revenue spent on ads matches the profit each sale generates. A 40 percent margin means a 40 percent break-even ACOS.
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The thinner your margin, the higher the ROAS you need to break even. A 20 percent margin needs a 5x break-even ROAS, while a 50 percent margin needs only 2x. Higher margins give you more room to spend on ads and still profit, which is why margin is the single biggest driver of what a campaign can afford.
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