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Break-Even ROAS & Max CPA Calculator

Break-even ROAS is the return your ads must hit just to not lose money — it depends entirely on your margin. Enter your economics and see the exact threshold, plus the maximum you can pay per acquisition (CPA) before a sale stops being profitable.

Your unit economics

Materials, labour, software, delivery — everything except ads.

How to use break-even ROAS

Max CPA works the other direction: it is the most you can pay per sale before the sale stops being profitable. If your dashboard shows CPA above this number, the campaign is underwater regardless of how good the ROAS % looks.

For course and training businesses: margins are usually high (70–85%), so break-even ROAS is low — often under 1.5×. That is why education ads scale so well in Singapore when the offer is right.

Want these numbers checked by a human?

Digimau reviews existing ad accounts, funnels and metrics free — including whether your Break-Even ROAS targets are realistic for Singapore in 2026. Reply times are usually under an hour on weekdays.

Methodology: standard performance-marketing formulas (see copy above). Estimates are planning aids — actual results depend on creative, offer and market. Pair this tool with the ROAS Calculator and our Marketing Budget Calculator. © Digimau Pte Ltd. Cite with a link.

Frequently asked questions

What is break-even ROAS?

Break-even ROAS is the ad return at which a campaign makes neither profit nor loss, given your margin. Formula: 1 ÷ gross margin. At a 50% margin, break-even ROAS is 2× — below it, every sale loses money.

How do I calculate break-even ROAS?

Break-even ROAS = 1 ÷ gross margin percentage. Example: you sell a course at S$1,500 with S$300 delivery cost — margin is 80%, so break-even ROAS is 1.25×. Any campaign above 1.25× is profitable.

What is maximum CPA?

Maximum CPA is the highest cost-per-acquisition that keeps a sale profitable: selling price minus delivery cost. At a S$1,200 price and S$480 cost, max CPA is S$720 — above that, ads lose money on every sale.

Why did my profitable campaign stop being profitable?

Usually margin compression (rising costs without price increases), CPM inflation (audience fatigue or seasonal competition), or tracking drift. Re-run break-even maths whenever costs or prices change.

Is this calculator free?

Yes — no email or sign-up. It computes break-even ROAS, gross margin and maximum profitable CPA from your price and delivery cost.