Profit on Ad Spend (POAS)
Profit on Ad Spend (POAS) measures the gross profit generated for every dollar spent on advertising. Unlike ROAS which measures revenue, POAS accounts for the cost of goods sold (COGS), giving a more accurate picture of advertising profitability.
Calculate Your Profit on Ad Spend
Use our free interactive calculator
Formula
POAS = (Revenue - COGS) ÷ Ad SpendWhere:
Revenue=Total revenue generated from advertisingCOGS=Cost of Goods Sold - direct costs to produce the products soldAd Spend=Total amount spent on advertisingExample
Scenario
Your campaign generated $50,000 in revenue with a 60% gross margin (COGS = $20,000), and you spent $10,000 on ads.
Calculation
POAS = ($50,000 - $20,000) ÷ $10,000 = 3.0Result
Your POAS is 3.0x, meaning you earned $3 in gross profit for every $1 spent on ads.
When to Use Profit on Ad Spend
- 1Making decisions about campaign profitability, not just revenue
- 2Comparing products with different profit margins
- 3Setting accurate break-even targets for advertising
- 4Optimizing campaigns for profit rather than revenue
- 5Businesses with variable product margins across SKUs
Common Mistakes
- ✗Using ROAS when margin varies significantly across products
- ✗Not updating COGS data when costs change
- ✗Ignoring shipping costs and returns in COGS calculations
- ✗Comparing POAS targets across products with different margins
POAS vs ROAS: A Real Example
Consider two products from the same campaign:
- Product A: $100 revenue, $70 COGS (30% margin), $20 ad spend → ROAS = 5.0, POAS = 1.5
- Product B: $100 revenue, $30 COGS (70% margin), $25 ad spend → ROAS = 4.0, POAS = 2.8
Looking at ROAS alone, Product A appears more efficient. But POAS reveals Product B is actually more profitable despite higher ad costs. This is why POAS is essential for e-commerce businesses with varying margins.
Implementing POAS in Your Campaigns
To optimize for POAS, you need to pass profit or margin data to your advertising platforms. Google Ads supports conversion value rules that can adjust for margins. Alternatively, use Xplainr to calculate POAS across all channels automatically.
Frequently Asked Questions
What is a good POAS?
A POAS of 2.0 or higher is generally considered good, meaning you're making at least $2 in gross profit for every $1 spent on ads. However, your target should account for other operating costs like shipping, returns, and overhead to ensure true profitability.
Why use POAS instead of ROAS?
POAS gives a more accurate picture of profitability because it accounts for product costs. A 5x ROAS on a 20% margin product is less profitable than a 3x ROAS on a 70% margin product. POAS helps you compare apples to apples.
How do I calculate COGS for POAS?
COGS typically includes direct production or wholesale costs, packaging, and sometimes fulfillment. For accurate POAS, use order-level COGS data. Many e-commerce platforms can provide this automatically.
Can I use POAS for service businesses?
POAS is most useful for product businesses with clear COGS. Service businesses can use a modified version by estimating the direct cost of service delivery, but ROI might be a more appropriate metric.
Related Terms
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