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Free Tool · Amazon PPC

Amazon ACOS Calculator & Profitability Estimator

Calculate your current ACOS, find your break-even ACOS, and estimate the maximum profitable bid for any keyword. Free, no signup required.

Your numbers

Your results

Current ACOS

20.0%

Break-even ACOS

55.0%

Product margin

55.0%

TACOS

8.3%

Max profitable bid

$1.10

Verdict

Your ACOS is well below your break-even point. Your campaigns are profitable.

How to read these numbers

ACOS

Advertising Cost of Sale

Ad Spend ÷ Ad Revenue × 100. Should be lower than your product margin for profitable campaigns. Aim for 30–50% below break-even for a comfortable cushion.

Break-even ACOS

Your maximum sustainable ACOS

This is the ACOS at which you make exactly zero profit on ad-driven sales. If your current ACOS is close to or above this number, your campaigns are unprofitable.

TACOS

Total Advertising Cost of Sale

Ad Spend ÷ Total Revenue. A healthier metric than ACOS because it captures the organic sales lift from your advertising investment. Target: 5–15% for most categories.

Need help improving your ACOS?

Our Amazon PPC team manages campaigns for sellers across the globe. We run weekly bid reviews, search term audits, and listing conversion analysis. Read our ACOS reduction guide or talk to us directly.

Our PPC management service →

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