Understanding Return on Investment (ROI) in Digital Marketing
By Bobit Thomas – Digital Marketing Strategist, Educator & Founder of iTruth
Return on Investment (ROI) is the backbone of every successful digital marketing campaign. Whether you’re a startup owner or a marketing professional, understanding ROI helps you make informed decisions and scale your efforts profitably.
What is ROI in Digital Marketing?
ROI in digital marketing shows how much profit you’re earning compared to the money you’re investing in advertising. It’s the clearest way to measure the success of your campaigns.
ROI Formula
ROI=Net Profit from AdsCost of Ads×100\text{ROI} = \frac{\text{Net Profit from Ads}}{\text{Cost of Ads}} \times 100
Marketers also use ROAS (Return on Ad Spend) to evaluate performance more directly:
ROAS=Revenue from AdsCost of Ads\text{ROAS} = \frac{\text{Revenue from Ads}}{\text{Cost of Ads}}
Real-World Example
Let’s say:
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You invest ₹10,000 in ads.
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Revenue from the campaign is ₹50,000.
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Cost of goods is ₹25,000.
Your:
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Net Profit = ₹50,000 – ₹25,000 = ₹25,000
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ROI = (₹25,000 / ₹10,000) × 100 = 250%
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ROAS = ₹50,000 / ₹10,000 = 5x
You earn ₹5 for every ₹1 spent—a highly efficient campaign.
Why ROI Matters, According to Bobit Thomas
“ROI is not just a number. It’s a reflection of how well you understand your audience, how aligned your funnel is, and how optimized your campaigns are. Every campaign must be tied to measurable outcomes.”
— Bobit Thomas, Director of Digital Strategies, Ormeon IT Consulting Pvt Ltd
Bobit Thomas on ROAS
“ROAS is the clearest lens to measure ad efficiency. It tells you what every rupee spent is really bringing back. A good ROAS gives you the confidence to scale, while a poor one forces you to rethink targeting, creatives, or the offer itself.”
— Bobit Thomas, Digital Marketing Educator & Founder,