Profit on Ad Spend (POAS)

Profit on ad spend is a profitability-oriented advertising efficiency measure. A common working definition divides contribution profit attributed to advertising by advertising spend, but teams must write down whether their profit figure is calculated before or after media cost and which direct expenses are deducted. Without those choices, two businesses may report incompatible POAS values.

Suppose an appliance installation business receives $10,000 in attributed revenue, incurs $6,500 in labor, materials, and variable fulfillment costs, and spends $1,000 on ads. Contribution before media cost is $3,500; a pre-media-cost contribution-to-ad-spend ratio is 3.5. If instead the firm uses contribution after ad expense, the numerator becomes $2,500 and the ratio becomes 2.5. Neither convention should be presented without a label.

POAS differs from return on ad spend (ROAS), which normally uses advertising-attributed revenue rather than profit. Gross margin may vary dramatically between two jobs with the same invoice amount, so a revenue-only target can favor work that brings little actual margin. Report assumptions about attribution, cancellations, refunds, overhead, and repeat purchases. POAS is a useful decision framework, not a universally standardized metric or a claim that ad platforms expose an identical POAS column.