ReckonBoxWhat a campaign actually returned
Marketing ROI is revenue minus the cost of the campaign, divided by that cost, times 100. Spend $10,000, bring in $50,000, and the return is $40,000 over $10,000, or 400%.
The same three numbers hide two more that matter. Return on ad spend, ROAS, is just revenue over spend, so this campaign is 5:1. And the 400% is a revenue figure, which counts sales the product still had to be made or bought to fulfill. At a 60% gross margin, only $30,000 of that $50,000 is gross profit, so the true profit ROI is $20,000 over $10,000, or 200%. The campaign looked like it quadrupled the money and actually tripled it.
ROI, ROAS, and the step between them
ROAS is a gross ratio of revenue to spend, while ROI nets the spend back out, so a 5:1 ROAS is always a 400% ROI. Marketers quote ROAS because it is the bigger, simpler number.
The two are one step apart: subtract the 1x you spent and turn the remainder into a percentage. A 3:1 ROAS is a 200% ROI, a 2:1 is 100%, and a 1:1 breaks even at 0% ROI. Knowing which one a report is quoting matters, because a 4:1 ROAS and a 400% ROI describe very different campaigns, and the words get used loosely.
| Spend $10,000 | ROAS | Revenue ROI |
|---|---|---|
| Revenue $20,000 | 2:1 | 100% |
| Revenue $30,000 | 3:1 | 200% |
| Revenue $50,000 | 5:1 | 400% |
Revenue flatters, profit tells the truth
Nearly every ranked ROI tool uses revenue, and that is the trap. Revenue has not paid for the goods sold, the shipping, or the payment fees, so a revenue-based ROI on a thin-margin product can look great while the campaign barely broke even in profit. The margin is the lever: at 100% margin, a software product say, the revenue ROI and profit ROI are the same, but at 30% margin a 400% revenue ROI collapses to a 20% profit ROI. This tool puts both on screen, because the gap between them is where money quietly disappears.
What this does not cover
This scores one period of spend against the revenue it drove, at a single gross margin. It does not track the lifetime value of a customer the campaign won, which can make a break-even acquisition profitable over years, nor the lag between spend and sales, nor attribution when a sale touched several channels first. As a benchmark, a 2:1 return is the usual floor for acceptable and 5:1 a good goal, but the right target bends to your margins: a low-margin business needs a higher ROAS to see the same profit. Use this as a clean campaign scorecard next to your own analytics.
Check the margin before you celebrate the ROI, because a 400% headline can be a 20% reality.
Frequently asked questions
How do I calculate marketing ROI? Marketing ROI is revenue minus cost, divided by cost, times 100. Spend $10,000 and bring in $50,000, and that is $40,000 over $10,000, a 400% ROI. It is the same formula as any ROI, applied to a campaign. The honest version uses gross profit instead of revenue, which lands lower once the cost of the product sold is taken out.
What is the difference between ROI and ROAS? ROAS, return on ad spend, is revenue divided by spend, so $50,000 on $10,000 is a 5:1 ROAS. ROI is the profit relative to spend, revenue minus cost over cost, so the same numbers are a 400% ROI. ROAS is a gross ratio marketers quote, while ROI nets out the spend, and a 5:1 ROAS is always a 400% ROI, one step apart.
Should I use revenue or profit for ROI? Revenue is the common shortcut and it overstates the return, because it counts sales the product cost has not been taken out of. At a 60% gross margin, a $50,000 revenue on $10,000 spend is a 400% revenue ROI but only a 200% profit ROI. This tool shows both, so a campaign that looks like it quadrupled your money may have merely tripled it.
What is a good marketing ROI? A common benchmark is that a 2:1 return, a 100% ROI, is the floor for acceptable, and 5:1, a 500% ROI, is a good goal. Channels vary widely: email is often cited at 36:1 to 42:1, while paid social can sit far lower. The right target depends on your margins, since a low-margin business needs a higher ROAS to actually profit from the same spend.
What does this leave out? It measures one period of spend against the revenue it drove, using a single gross margin. It does not model the lifetime value of a customer acquired, the lag between spend and sales, or attribution across channels, all of which shift the real return. Treat it as a clean scorecard for a campaign, and pair it with your own analytics for the fuller picture.