A good marketing ROI leaves enough money after delivery costs and marketing costs to justify the investment, support the business, and compensate for the risk.
That answer is less convenient than “aim for 5:1.” It is also considerably more useful.
The same revenue return can look excellent for one business and lose money for another. Before adopting somebody else’s target, check what they sell, what it costs to deliver, and which costs their impressive number quietly excludes.
First, decide which return you mean
Revenue ROAS measures revenue attributed to advertising divided by ad spend. Spend $10,000 on ads and attribute $50,000 in revenue to them, and you have 5x revenue ROAS.
Google Ads describes target ROAS bidding around conversion value per advertising cost. That value depends on your setup, so check what your conversion values represent before assuming the dashboard shows revenue or profit.
For the decision here, contribution-based marketing ROI means incremental revenue minus variable delivery costs and the marketing costs being evaluated, divided by those marketing costs. Contribution margin is the share of revenue left after those variable delivery costs, before marketing. Include relevant fulfillment, payment processing, returns, commissions, or service labor. Gross margin may leave some of those out.
If you need the calculation mechanics, start with how to calculate marketing ROI. Here, the question is whether the result clears your business’s hurdle.
Two businesses, identical ROAS, opposite decisions
Consider two hypothetical campaigns. Each spends $10,000 on ads and $2,000 on campaign production and management. Each generates $50,000 in revenue. Assume, for now, those sales were caused by the campaign.
Both report 5x revenue ROAS. Both cost $12,000 in total marketing investment.
| Measure | Business A | Business B |
|---|---|---|
| Revenue | $50,000 | $50,000 |
| Contribution margin before marketing | 60% | 20% |
| Contribution before marketing | $30,000 | $10,000 |
| Total campaign cost | $12,000 | $12,000 |
| Contribution after campaign cost | $18,000 | −$2,000 |
| Marketing ROI | 150% | −16.7% |
Business A has $18,000 left to help cover overhead and profit. Business B has lost $2,000 before considering other overhead. The matching dashboard badges are doing very different work.
Keep the cost categories consistent. The $12,000 includes the ad spend, so do not subtract another $10,000 afterward. Likewise, a cost already included in the contribution margin should not appear again in the marketing deduction.
Calculate your floor, then set your target
For this simplified campaign model, break-even incremental revenue equals total campaign cost divided by the contribution margin ratio. This assumes the margin stays applicable across those additional sales.
Business A needs $20,000 in incremental revenue to cover its $12,000 campaign cost at a 60% margin. Business B needs $60,000 at a 20% margin. Relative to their $10,000 ad budgets, those floors are 2x and 6x revenue ROAS, if the attributed revenue is also incremental.
Those are campaign break-even points. Neither proves that the entire company is profitable.
Now add an explicit contribution requirement. If Business A needs $6,000 left after campaign costs, it needs $30,000 in incremental revenue: ($12,000 + $6,000) ÷ 60%. That implies 3x revenue ROAS for this particular budget and cost structure, under the same incrementality assumption.
The $6,000 is a hypothetical management choice, not an industry benchmark. Your requirement should reflect overhead, competing uses of cash, and uncertainty.
Make the target survive actual operations
Before calling a return good, answer four questions:
- Can we deliver the extra demand? Overtime, contractors, expedited shipping, or capacity investments can change the margin on additional sales.
- When does the money arrive? A profitable campaign can strain cash when advertising is paid now and customers pay months later.
- Has the buying cycle had time to finish? Compare mature customer cohorts and consistent windows. Do not compare a completed quarter with last week’s leads.
- How much revenue did marketing actually create? Attribution assigns credit. It does not prove every credited customer would otherwise have disappeared.
Repeat purchases can justify a higher acquisition cost, but use observed contribution over a defined period. An optimistic lifetime-value estimate is a poor substitute for cash.
Turn the number into a decision
Start with a conservative incremental-revenue estimate. If Business A’s campaign caused only $30,000 of its $50,000 attributed revenue, its contribution after marketing falls to $6,000. Its ROI becomes 50%, rather than 150%.
Where feasible, use holdouts or controlled experiments to test incrementality. Until then, show a plausible range and explain the uncertainty. Read how to build a credible ROI case before treating a dashboard number as proof.
Set three decision points: the break-even floor, the contribution target, and the conditions required to increase spending. Scale when mature results clear the target and additional demand remains profitable. Run a bounded test when uncertainty could change the decision. Reduce or stop spending when credible results stay below the floor.
Use a practical tracking system and the marketing measurement resources to document those assumptions. If the numbers need a more thorough review, work with me on your marketing economics.
A good marketing ROI is a return your business can afford to repeat.
