What Is ROI? (Return on Investment)
The overall profitability measure of a business: the net gain an investment produces relative to its cost.
Book a free callROI (Return on Investment) is the ratio of the net gain an investment produces to its cost. It’s calculated as (Total Revenue − Total Cost) ÷ Total Cost and is usually expressed as a percentage. Unlike ROAS, it covers all costs — including product, staff and infrastructure — not just ad spend.
How is ROI calculated?
Example
A campaign period generated $250,000 in revenue. The total cost behind that revenue: $120,000 in ads, $35,000 in agency fees, $25,000 in creative production and $40,000 in team costs — $220,000 in total.
This example shows why the difference between the two metrics matters: a campaign that looks great at 2.08x ROAS delivers only a 13.6% return once all costs are included.
ROI vs. ROAS
| ROAS | ROI | |
|---|---|---|
| Cost in the denominator | Ad spend only | Total investment cost |
| Revenue in the numerator | Gross ad revenue | Net gain (revenue − cost) |
| What it measures | Channel / campaign efficiency | Overall business profitability |
| Whose metric | Marketing team | Leadership, finance, investors |
Rule of thumb: make in-campaign optimization decisions with ROAS, and budget and resource allocation decisions with ROI. A campaign can deliver high ROAS while having negative ROI — that’s not a contradiction, just two metrics answering different questions.
Common marketing ROI mistakes
- Skipping hidden costs. When agency fees, tool licenses, creative production and team time are left out, ROI looks systematically inflated.
- Timing mismatch. In models where this month’s spend generates revenue over the coming months, dividing a calendar month’s revenue by that same month’s costs is misleading. You need a cohort-based view.
- Getting attribution wrong. Crediting all revenue to a single channel inflates that channel’s ROI and makes the others look needlessly weak.
- Ignoring brand impact. Upper-funnel campaigns may not drive direct conversions, but they feed search volume and organic traffic; that contribution is invisible in most ROI calculations.
- Overlooking opportunity cost. A 15% ROI isn’t a good result if the same budget could have produced 40% in another channel.
Frequently asked questions
What is a good marketing ROI?
It depends on the industry and business model. Being positive is necessary but not sufficient; the real comparison is against alternative uses of the same budget. Growth-stage companies may also deliberately accept low or negative short-term ROI to win market share.
Should you stop a campaign if ROI is negative?
Not always. In subscription and high-LTV models, first-period ROI is naturally negative; the profit comes from later renewals. Base the decision on the payback period and how your cohorts mature over time.
Should you track ROI and ROAS at the same time?
Yes, they complement each other. ROAS is fast and granular enough for day-to-day campaign optimization. ROI is calculated periodically to confirm that the business is actually generating profit.
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