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Break-Even ROAS Calculator

Calculate break-even and target-profit CPA and ROAS using detailed order, fulfillment and refund assumptions.

◈ Local Processing · Inputs Are Not Uploaded

Inputs & Settings

Orders & Products
Splits are calculated solely based on your submitted assumptions without automatically judging tax laws.
Fulfillment & Payment
Ads & Refunds
Included only in refund models; recovered inventory value is not cash income.
Applies to total percentage fees and fixed fees in the refund model.
Included in refund-only models.
Included in refund-only models.
Operations & goals
Uses retained net revenue after deducting refunds and sales tax as the denominator.

This workspace processes data in the current browser; input is not saved upon refresh.

Results workbench

Fill in the details, then click Generate Results.

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Results will be displayed here

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How to use Break-Even ROAS Calculator

  1. Enter product, tax, fulfillment, payment, and refund costs based on the same average order value metric.
  2. Enter your desired profit margin to calculate break-even and target profit CPA.
  3. Select ROAS based on the sales metric used in ad reports and review alongside actual attribution.

Try a concrete example

With the default assumptions, pre-ad contribution is 46.95; a 15% retained-revenue profit target leaves CPA of 32.70.

How to interpret results

Break-even CPA is retained net revenue minus non-ad costs and overhead. ROAS can use original customer payment or retained revenue after refunds and sales tax; the two bases are not interchangeable. If no positive ad budget remains, no finite usable ROAS is invented.

Frequently asked questions

Why are two ROAS values displayed?

Ad platforms may report gross order revenue, whereas business analytics focuses on net retained revenue after refunds and taxes. Because the numerators differ, the two ROAS metrics cannot be directly compared.

Is reaching break-even ROAS a guarantee of profit?

Applies only when input costs, refund rates, and attribution assumptions hold true; uncalculated taxes and cash flow still require verification.

Why is there no positive CPA?

Current costs or target profits have exhausted all retained revenue. The model cannot allocate a positive ad budget.

break-even ROAS calculator practical guide and common questions

What does a break-even ROAS calculator do?

Break-even ROAS translates the order contribution available for advertising into a revenue-to-ad-cost boundary.

Who is this for, and when is it useful?

Advertisers comparing product economics and setting acquisition limits.

How do I use this break-even ROAS calculator?

Enter retained revenue and order-cost assumptions, review break-even ROAS and CPA, then validate against refunds, taxes and channel data.

How should I interpret the results?

If pre-ad contribution is low or negative, address product economics first. Compare actual ROAS using the same refund, tax and attribution basis rather than gross sales alone.

Where is the work performed, and which services receive data?

Contribution, break-even ROAS and CPA are calculated in your browser without reading ad accounts or live attribution reports.