TACoS Calculator (Total Advertising Cost of Sales)
Calculate your Total Advertising Cost of Sales (TACoS). Measure ad spend as a percentage of total revenue to evaluate overall advertising efficiency.
Amazon ACoS Calculator
Calculate your Amazon Advertising Cost of Sales (ACoS). Enter ad spend and ad revenue to find your ACoS percentage and determine if campaigns are profitable.
$
$
Your margin before ad costs
%
✅ Profitable — ACoS is 10.00% below break-even
ACoS⧉
25.00%
Break-even: 35.00%
ROAS⧉
4.00×
$4.00 revenue per $1 ad spend
Ad Profit⧉
$200.00
Revenue margin minus ad spend
Ad Spend⧉
$500.00
25.00% of ad revenue
Planning notes, formulas, and examples
About the Amazon ACoS Calculator
ACoS (Advertising Cost of Sales) is the most important metric for Amazon PPC campaigns. It measures what percentage of your ad-driven revenue is spent on advertising. An ACoS of 30% means you spend $0.30 on ads for every $1.00 of ad-attributed revenue.
Lower ACoS is generally better, but the "right" ACoS depends on your profit margins. If your pre-ad margin is 40%, any ACoS below 40% means you're still profitable on ad-driven sales. An ACoS above your margin means you're losing money on each ad sale.
This calculator computes your ACoS from ad spend and revenue, and compares it to your profit margin to determine if your campaigns are profitable, breaking even, or losing money.
When This Page Helps
ACoS is the core metric for Amazon advertising profitability. This calculator compares ACoS to margin so you can see whether campaigns are making money, breaking even, or burning contribution.
How to Use the Inputs
- Enter your total Amazon ad spend for the period.
- Enter the total revenue generated from those ads.
- Enter your product's profit margin (before ad costs).
- View your ACoS and whether it's profitable.
- Compare to your break-even ACoS threshold.
Formula used
ACoS = (Ad Spend / Ad Revenue) × 100
Ad Profit = Ad Revenue − (Ad Revenue × COGS%) − Ad Spend
Break-Even ACoS = Pre-Ad Profit Margin%
ROAS = Ad Revenue / Ad SpendExample Calculation
Result: ACoS: 25.0% | ROAS: 4.0× | Status: Profitable
Ad spend: $500. Ad revenue: $2,000. ACoS: $500 / $2,000 = 25%. Your margin is 35%, so break-even ACoS is 35%. At 25% ACoS you're 10 points below break-even, meaning each ad dollar generates profit. ROAS: $2,000 / $500 = 4.0×. Ad profit: $2,000 × 35% − $500 = $200.
Tips & Best Practices
- A "good" ACoS depends entirely on your margins — 25% ACoS is great at 40% margin but terrible at 20% margin.
- For new product launches, accept higher ACoS (even unprofitable) to build ranking and reviews.
- Optimize ACoS by: adding negative keywords, adjusting bids, improving listing conversion rate.
- Separate branded keywords (low ACoS) from generic keywords (higher ACoS) in different campaigns.
- Monitor ACoS at the keyword level, not just the campaign level, to find hidden winners and losers.
- Don't chase the lowest possible ACoS — sometimes higher ACoS drives more total profit at higher volume.
ACoS Benchmarks by Category
Electronics: 15‒25% average ACoS. Home & Kitchen: 20‒30%. Beauty: 20‒35%. Grocery: 15‒25%. Pet Supplies: 20‒30%. Clothing: 25‒40%. These are averages — your target ACoS should be based on YOUR margin, not category averages.
The ACoS Optimization Cycle
Week 1–2: Launch campaigns with broad and phrase match, collect data. Week 3–4: Add negative keywords, move winning search terms to exact match. Month 2–3: Optimize bids based on keyword-level ACoS data. Month 3+: Scale profitable campaigns, pause losers, test new keywords. Continuous optimization is key — ACoS is never "set and forget."
ACoS vs. TACoS
ACoS only measures ad-driven sales efficiency. TACoS (Total Advertising Cost of Sales) measures ad spend against TOTAL revenue including organic. TACoS is a better indicator of overall advertising efficiency because successful PPC campaigns also boost organic ranking and sales.
Sources & Methodology
Last updated:
Frequently Asked Questions
ACoS (Advertising Cost of Sales) is the percentage of ad-attributed revenue spent on advertising. ACoS = Ad Spend / Ad Revenue × 100. A 25% ACoS means you spent $25 in ads to generate $100 in revenue. It's the inverse of ROAS (Return on Ad Spend).
A "good" ACoS is anything below your pre-ad profit margin. If your margin is 30%, ACoS below 30% is profitable. Average ACoS across Amazon is 15–30%. Top performers achieve 10–20% ACoS. New product launches often run 40–70% ACoS intentionally to build momentum.
They're inverses. ACoS = Ad Spend / Revenue. ROAS = Revenue / Ad Spend. An ACoS of 25% means ROAS is 4× ($4 revenue per $1 spent). ACoS is Amazon's standard metric; ROAS is more common on other advertising platforms (Google, Facebook).
Optimize for total profit, not ACoS alone. A 15% ACoS generating $1,000 in sales ($150 ad cost, $200 profit) is worse than a 25% ACoS generating $5,000 in sales ($1,250 ad cost, $500 profit). Lower ACoS at lower volume doesn't always mean more money in your pocket.
Common causes of high ACoS: too many broad match keywords catching irrelevant searches, low listing conversion rate (poor photos, reviews, or pricing), high CPC from competitive bidding, targeting expensive high-volume keywords, or a new listing without enough reviews. Diagnosing the root cause requires checking your search term report for wasted spend and comparing your listing quality against top competitors in the category.
Top strategies: (1) Add negative keywords to eliminate irrelevant clicks, (2) Lower bids on unprofitable keywords, (3) Improve listing conversion (better photos, A+ Content, reviews), (4) Target long-tail keywords with less competition, (5) Use exact match for proven keywords, (6) Increase price (if market allows) to improve margin. Consistently applying these optimizations week over week typically reduces ACoS by 20–40% within two to three months.
More in this topic
Break-Even ACoS Calculator
Calculate your break-even ACoS on Amazon. Enter sale price, COGS, FBA fees, and referral fee to find the maximum ACoS for profitable advertising.