ProfitHelm

Break-Even ACOS Calculator

Find your maximum profitable ACOS. Know exactly how much you can spend on ads without losing money.

Break-even ACOS equals your profit margin percentage. If your profit margin is 30%, your ACOS must stay below 30% to remain profitable. Formula: (Product Price - COGS - Fees) ÷ Product Price × 100.

Product Economics

Enter costs for one product sale

$

What you charge customers

$

Cost to manufacture or purchase

$

Cost to ship to customer

$

Payment processing, platform fees

$

Packaging, returns allowance, etc.

%

Optional: See if you're profitable

ACOS Analysis

Your advertising thresholds

Break-Even ACOS

0.0%

Max ad spend: $0.00 per sale

Target ACOS Zones

0%ProfitableRisky0.0%
Conservative

High profit, slower growth

< 0.0%
Moderate

Balanced approach

< 0.0%
Aggressive

Growth focus, thin margins

< 0.0%
Total Costs$0.00
Profit Before Ads$0.00

ACOS Strategy by Goal

Maximize Profit

Target: 40-50% of break-even ACOS

Best for: Established products, cash-conscious brands

Trade-off: Slower volume growth

Balanced Growth

Target: 60-70% of break-even ACOS

Best for: Scaling products, most businesses

Trade-off: Moderate profits + growth

Aggressive Scaling

Target: 80-95% of break-even ACOS

Best for: Launches, market capture, high LTV products

Trade-off: Minimal profit, maximum volume

ACOS Benchmarks by Ad Platform

PlatformAverage ACOSBest-in-Class
Facebook Ads25–35%12–18%
Google Shopping20–30%10–15%
Google Search15–25%8–12%
TikTok Ads30–45%15–22%
Instagram Ads25–35%12–18%
Pinterest Ads20–30%10–16%

Benchmarks based on e-commerce averages. Your results vary by product, targeting, and creative quality.

Real-World ACOS Examples

Fashion Brand

AOV: $65.00

COGS$18.00
Shipping$5.00
Fees$2.50
Ad spend/sale$14.00
Break-even ACOS61.5%
Actual ACOS21.5%

Profitable — 40.0% below break-even

Electronics Store

AOV: $120.00

COGS$68.00
Shipping$8.00
Fees$4.50
Ad spend/sale$22.00
Break-even ACOS32.9%
Actual ACOS18.3%

Profitable — 14.6% below break-even

Beauty & Skincare

AOV: $42.00

COGS$8.00
Shipping$4.00
Fees$1.50
Ad spend/sale$12.00
Break-even ACOS67.9%
Actual ACOS28.6%

Profitable — 39.3% below break-even

Related Calculators

Profit Margin

Calculate gross and net margins

Customer LTV

Justify higher ACOS with LTV

Shopify Fees

Include transaction fees in ACOS

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Frequently Asked Questions

What is break-even ACOS?

Break-even ACOS (Advertising Cost of Sale) is the percentage of revenue you can spend on ads without losing money. If your break-even ACOS is 30%, spending more than 30% on ads means you're losing money on that sale.

How do I calculate break-even ACOS?

Break-even ACOS = Profit Margin %. If your product sells for $100 with $60 in costs (COGS + fees), your profit margin is 40%, so your break-even ACOS is 40%. Any ACOS below this is profitable.

What is a good ACOS for e-commerce?

A good ACOS depends on your profit margin. Target an ACOS that's 50-70% of your break-even ACOS to maintain healthy profits. For example, if break-even is 40%, aim for 20-28% ACOS for profitable campaigns.

Why is my ACOS higher than my profit margin?

If your ACOS exceeds your profit margin, you're losing money on ads. Either reduce ad spend, improve ad targeting, raise prices, lower COGS, or accept the loss for customer acquisition (if LTV justifies it).

What is the difference between ACOS and ROAS?

ACOS (Advertising Cost of Sale) = Ad Spend / Revenue × 100. ROAS (Return on Ad Spend) = Revenue / Ad Spend. They are inverses: 25% ACOS = 4x ROAS. ACOS is preferred for profitability analysis because it directly compares to profit margin.

Should I set different ACOS targets per product?

Yes. Each product has different margins, so break-even ACOS varies. A 60% margin product can sustain 40% ACOS, while a 25% margin product needs ACOS under 15%. Set per-product targets based on individual unit economics.

How does customer LTV affect my ACOS target?

If customers reorder, you can justify higher first-order ACOS. For example, if LTV is 3x first order value, you can afford up to 3x your single-order break-even ACOS on acquisition campaigns while still being profitable long-term.

What ACOS should I target when launching a new product?

During launch, accept ACOS at or slightly above break-even (90-110% of margin) for 2-4 weeks. This seeds the algorithm with conversion data. Once you hit 50+ conversions, optimize toward 60-70% of break-even ACOS for sustainable scaling.

How do I lower my ACOS on Facebook and Google Ads?

Key tactics: 1) Improve ad creative (biggest lever), 2) Tighten audience targeting, 3) Use lookalike audiences from best customers, 4) Optimize landing pages for conversion, 5) Increase AOV with bundles/upsells, 6) Exclude unprofitable placements, 7) Test different bid strategies.

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