ROAS answers a specific question
Return on ad spend is measured conversion value divided by advertising cost. If the value is actual revenue, it tells you how much attributed revenue you recorded for each unit of media spend. It does not subtract product costs, service delivery, management fees or refunds automatically.
If the conversion value is an estimated lead value instead of a sale, say so. A dashboard labelled “4x ROAS” can describe different economics depending on what the numerator contains. Google's conversion-value guide explains value measurement and its use in bidding.
Worked example: 4x revenue ROAS, modest contribution
Hypothetical calculation, not a customer result. A shop attributes A$2,000 of revenue to A$500 of media spend. Revenue ROAS is 2,000 ÷ 500 = 4x, or 400%.
Suppose the orders have a 30% contribution margin before advertising. That gives A$600 of contribution. Subtract A$500 media spend and A$100 remains before the management fee and other costs. The campaign's 4x revenue figure has not established a large profit.
With that simplified margin and no other acquisition costs, media break-even revenue ROAS would be 1 ÷ 0.30, or about 3.33x. Returns, fixed fees and repeat purchases can change the business decision. Use your own accounting assumptions rather than adopting the example's margin.
Lead values need an explicit method
For a service business, an enquiry is not completed revenue. If a documented estimate is useful, show the close rate, expected contribution and period used. For example, a hypothetical 20% close rate and A$300 contribution per customer imply A$60 expected contribution per comparable lead, before lead acquisition and handling costs.
That estimate is only as good as the data and definition behind it. Ten spam submissions are not ten equivalent leads. Update the estimate when qualification or sales outcomes change; do not claim booked revenue from a button click.
Check the value before optimising towards it
- Actual sale or estimated lead value?
- Correct amount and currency?
- One count per logical order or enquiry?
- Handling of refunds, cancellations and repeat purchases?
- Conversion action and attribution window used?
- Comparable reporting period, with conversion delay allowed?
Use the tracking checklist to test the event. A value multiplied by the wrong currency or duplicated checkout event can make an unprofitable campaign look strong.
A target is not a guarantee
Value-based bidding uses the configured measurement to pursue an outcome. It cannot guarantee revenue or know your margin unless the signal and business model express what matters. Setting a very high target can restrict delivery rather than manufacture a better offer.
Read the bidding guide before changing targets. Keep platform efficiency and full business acquisition cost as separate views.
Make the decision with complete costs
Include media spend, management, creative or landing-page costs where appropriate, and the team's lead-handling time. The management-cost example explains that comparison.
For multiple channels, reconcile unique business outcomes instead of adding every platform's attributed sales. Use our measurement plan and compare current fees before deciding whether the campaign economics support more spend.