Marketing & Ads

Break-Even ROAS Calculator

Find the minimum ROAS (and maximum ACoS) your ads need to stay profitable — and the target that keeps the profit margin you want.

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Your numbers

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Per sale — use our fee calculators

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Packaging, returns allowance…

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Results

Break-even ROAS

2.5×

Ads must return at least $2.50 per $1 — a maximum ACoS of 40%

Profit per sale before ads
$16.00
Break-even ACoS (max)
40%
Break-even ROAS (min)
2.5×
Target ACoS for 10% margin
30%
Target ROAS for 10% margin
3.33×

Download your results

Branded KleverKlimb report with your inputs and results.

How it works

The formula

Exactly what this calculator does with your numbers — no hidden assumptions.

01payments

Profit before ads

Price − product cost − fees − shipping − other costs. This is the most you could spend on ads per sale.

02balance

Break-even point

Break-even ACoS = profit before ads ÷ price. Break-even ROAS = price ÷ profit before ads.

03flag

Target for profit

Target ACoS = break-even ACoS − the margin you want to keep. Target ROAS = 100 ÷ target ACoS.

ACoS vs ROAS: What’s a Good Number for Your Ads?

5-minute guide · ACoS and ROAS explained for Amazon, Walmart, Google and Meta sellers — how they relate, TACoS, and how to find your own break-even target.

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FAQ

Questions, answered

Q1What does break-even ROAS mean?
It’s the ROAS at which ad spend uses up all your profit — you neither make nor lose money on ad-driven sales. Below it, every ad sale loses money.
Q2Should I always aim above break-even?
Usually yes. Some sellers accept break-even or a small loss for a new product launch to build reviews and rankings, but it should be a deliberate, time-limited choice.
Q3Why is my target “not reachable”?
The margin you want is higher than your profit before ads. Lower costs, raise the price, or reduce your target margin.
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