"Half the money I spend on advertising is wasted; the trouble is I don't know which half." — John Wanamaker
In 2026, with advanced analytics and tracking, you have no excuse for not knowing. Return on Investment (ROI) is the ultimate truth-teller of your business.
What is Marketing ROI?
Marketing ROI measures the profit generated by marketing activities relative to the cost of those activities. It tells you if your campaigns are actually making money.
The Formula
$$ \text{ROI} = \left( \frac{\text{Revenue from Marketing} - \text{Marketing Cost}}{\text{Marketing Cost}} \right) \times 100 $$
Example:
- You spend $1,000 on Google Ads.
- These ads generate $5,000 in sales.
- Profit = $5,000 - $1,000 = $4,000.
- ROI = ($4,000 / $1,000) × 100 = 400%.
A 400% ROI means for every $1 you spent, you got $4 back in profit (plus your original $1).
ROI vs. ROAS
People often confuse ROI with ROAS (Return on Ad Spend).
- ROAS looks at gross revenue. (Revenue / Cost). In the example above, ROAS is 500% (or 5:1).
- ROI accounts for profit and is a better metric for overall business health.
What is a "Good" ROI?
- 5:1 (500%) is considered strong for most industries.
- 2:1 (200%) is often the breakeven point when you factor in producing the goods/services.
- 10:1 (1000%) is exceptional.
Common Mistakes
- Ignoring Customer Lifestime Value (CLTV): Sometimes a campaign breaks even on the first sale but gains a customer who buys for years.
- Attribution Errors: Giving 100% credit to the last click (e.g., Google Ad) when an Instagram post actually introduced the customer to your brand.
Crunch the Numbers Instantly
Don't waste time with spreadsheets. Input your campaign numbers into our free calculator:
Test different scenarios and see exactly how much you can afford to spend to acquire a customer!