Return on ad spend (ROAS) divides revenue attributed to advertising by ad spend; return on investment (ROI) compares profit or net gain with the full investment cost. A campaign producing $8,000 of attributed revenue from $1,000 of ads has 8.00x ROAS, but it can have a loss if product, fulfillment, refunds, and campaign costs exceed the remaining $7,000.
What roas vs roi means
ROAS is attributed revenue divided by advertising spend, while ROI is net gain divided by the investment cost named in the calculation. ROAS evaluates revenue efficiency of media spend; ROI evaluates profitability after the cost set selected for the investment decision.
| Attributed revenue | $8,000 |
|---|---|
| Ad spend | $1,000 |
| ROAS | 8.00x |
| All illustrated cost | $7,400 |
| Simplified ROI | 8.11% |
ROAS vs. ROI: why a campaign can have strong revenue and weak profit: worked example
A campaign spends $1,000 on ads and attributes $8,000 of sales to those ads. ROAS is $8,000 divided by $1,000, or 8.00x. Suppose the $8,000 of sales requires $4,800 of product cost, $1,200 of fulfillment and returns, and $1,400 of campaign labor and creative in addition to the ads. Simplified profit is $600: $8,000 minus $7,400. ROI using total $7,400 cost is $600 divided by $7,400, or 8.11%, not 700%.
How to calculate roas vs roi
Write the attribution rule first. ROAS = attributed revenue divided by ad spend. For ROI, list every cost included, calculate revenue minus those costs, then divide that net gain by the same stated investment base. A ratio is comparable only when the revenue window and cost inclusion are comparable.
Use the relevant inputs with these related Calculatort pages: ROAS calculator · ROI calculator · profit margin tool.
Common mistakes
Do not label revenue minus ad spend as profit, mix a 7-day revenue window with a 30-day cost window, count an organic sale as paid attribution without a rule, or use an ROI denominator that omits costs named in the numerator.
Where this calculation stops
Attribution models, repeat purchases, returns, taxes, inventory write-downs, agency fees, and customer support can materially change the result. Neither metric proves that an ad caused a future sale.
Source and verification
The U.S. Small Business Administration advises businesses to use financial statements and cash-flow records when evaluating business finances; those records identify costs that a revenue-only ratio omits. Read the named source. Verify the source date and the controlling statement, agreement, payroll record, or accounting record before relying on the illustrated result.