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Break-Even ROAS Calculator - Calculate Your Minimum ROAS

Calculate break-even ROAS from gross margin and additional variable costs to estimate the minimum revenue multiple needed for advertising to cover its own cost.

Gross Margin and Variable Cost Inputs

Use percentages of the same revenue base. Gross margin should already reflect COGS or direct delivery costs; enter only additional revenue-linked variable costs that are not already included.

Use the share of revenue remaining after COGS or direct service delivery, before advertising and the extra variable costs entered below.
Include payment fees, variable fulfillment, shipping subsidies, return allowances or other revenue-linked costs not already inside gross margin.
Effective Contribution Margin-
Break-Even ROAS-
Break-Even ROAS Percentage-
Revenue Required per $1 of Ad Spend-
Maximum Ad Cost per $100 Revenue-
Total Non-Ad Variable Cost Rate-
Break-Even Interpretation-

Example: 40% Margin With 5% Extra Variable Costs

Gross margin: 40.00%

Additional variable costs: 5.00%

Effective contribution margin: 35.00%

Break-even ROAS: 2.86x

Break-even ROAS percentage: 285.71%

Maximum ad cost per $100 revenue: $35.00

The sample inputs shown here match the default calculator values so the example can be reproduced directly.

Break-Even ROAS Calculator Formulas

Contribution Margin = Gross Margin - Additional Variable Cost RateBreak-Even ROAS = 1 / Contribution Margin as a DecimalMaximum Ad Cost = Revenue x Contribution MarginBreak-Even ROAS Percentage = Break-Even ROAS x 100

Input Checklist

Start with gross margin: Use revenue after COGS or direct delivery cost, before advertising.Avoid double counting: Add payment fees, returns or fulfillment only when they are not already included in gross margin.Keep the same revenue basis: Use a product, campaign or blended margin that matches the revenue whose break-even threshold you are evaluating.

Add This Break-Even ROAS Calculator to Your Website

Embed this free calculator on a marketing, PPC or analytics resource page. The ?embed=1 view keeps the calculator focused and supports responsive iframe resizing.

Embedding requirement: Keep the SolveIndex attribution and source link visible and unchanged.
  
Marketing - Google Ads & PPC
Understand the profitability floor before setting a ROAS target
Read the detailed guide for the break-even ROAS formula, gross margin versus contribution margin, worked examples, target setting and ecommerce cost adjustments.
Read how to calculate break-even ROASBrowse all guides
Break-Even ROAS Calculator Frequently Asked Questions
Subtract additional revenue-linked variable costs from gross margin to get the contribution margin available before advertising. Convert that margin to a decimal, then divide 1 by it. A 35% contribution margin produces a break-even ROAS of about 2.86x.
It means the modeled transactions need about $2.86 of revenue for each $1 of ad spend so the contribution remaining after non-ad variable costs can cover that advertising dollar. It is a profitability floor, not a guarantee of net profit.
Use contribution margin before advertising when possible. If gross margin already captures every relevant non-ad variable cost, the extra variable-cost field can stay at zero. Otherwise, use it to deduct costs such as payment fees, variable fulfillment or expected returns.
No. Break-even ROAS is an economics-based floor from your margin assumptions. Target ROAS is a chosen operating or bidding goal and normally needs headroom above the break-even floor for fixed overhead, profit, risk and measurement uncertainty.
Yes, when the margin inputs reflect the products and markets being advertised. Include variable costs such as payment fees, shipping subsidies, fulfillment and expected returns only once, and use a weighted margin when product mix differs materially.
Compare the break-even floor with actual ad efficiency, acquisition cost and broader profit before changing spend.
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Break-Even ROAS Calculator Disclaimer: This is a contribution-margin planning model. It does not automatically include fixed overhead, taxes, financing, desired profit, lifetime value or costs omitted from your inputs. Reconcile the threshold with current accounting data, attribution settings and your complete cost structure before making material budget decisions.