How to Calculate Influencer Marketing ROI

The short answer

Influencer marketing ROI is (gross profit from tracked sales − total campaign cost) ÷ total campaign cost × 100. The formula needs your gross margin, not just revenue — use revenue in place of gross profit and you are calculating ROAS (Return on Ad Spend), not ROI. The two numbers can point in opposite directions on the exact same campaign. Below: the formula, a full worked example, and the mistakes that most often distort the number.

ROI vs ROAS vs contribution — what's the difference?

All three get used to judge whether a campaign was worth it, but they answer different questions. Knowing only one of them means you are missing part of the picture.

Metric	Formula	What it shows	What it MISSES
ROI	(Gross profit − cost) ÷ cost × 100	Real profit relative to what you spent	Needs a known gross margin to be accurate
ROAS	Revenue ÷ cost	Revenue generated per unit spent	Blind to margin — can look strong on a loss-making product
Contribution	Gross profit − cost	The actual currency amount left to cover overhead	Not a percentage — hard to compare across campaigns of different size

ROAS is the single most common source of confusion in influencer reporting, because it looks like a profitability metric but is really only a revenue metric. A campaign with a ROAS of 5 can be deeply unprofitable if gross margin is low enough — the calculation below shows exactly how.

The ROI formula

Write it out in full so you don't accidentally substitute revenue:

ROI (%) = ((Tracked revenue × Gross margin %) − Total campaign cost) ÷ Total campaign cost × 100

Input	What it is	Where to find it
Tracked revenue	Revenue attributed to the influencer campaign inside your attribution window	Tracked links, discount codes, UTMs — see how to track influencer marketing performance
Gross margin %	(Revenue − cost of goods) ÷ revenue	Your own accounts, not an industry figure
Total campaign cost	Upfront fees + commission + UGC/usage rights + any product cost or ad spend if content is reused	Your agreement with each creator — see upfront vs commission

How to calculate it, step by step

1. Get tracked revenue for the campaign, inside your defined attribution window.
2. Get your gross margin on the products actually sold — not a company-wide average, the margin on what the campaign sold.
3. Calculate gross profit = tracked revenue × gross margin %.
4. Add up every cost: upfront fees, commission, UGC and usage rights, product cost if seeded, and ad spend if the content ran as paid ads.
5. Subtract cost from gross profit to get net profit.
6. Divide net profit by cost and multiply by 100 to get ROI as a percentage.

Worked example

All numbers below are hypothetical and for illustration only. This is not a real Make Influence customer case, and none of the figures are benchmarks. Replace every number with your own.

A brand works with one creator: a DKK 5,000 upfront fee and 8% commission on tracked sales. The campaign generates DKK 40,000 in tracked revenue at a 50% gross margin.

• Commission = 8% × 40,000 = DKK 3,200
• Total cost = 5,000 + 3,200 = DKK 8,200
• Gross profit = 40,000 × 50% = DKK 20,000
• Net profit = 20,000 − 8,200 = DKK 11,800
• ROI = 11,800 ÷ 8,200 × 100 = 143.9%
• For comparison, ROAS = 40,000 ÷ 8,200 = 4.9

For how the same maths looks across a full campaign with ten creators and mixed deals, see worked example: 10 influencers, UGC + commission.

Sensitivity: what moves ROI the most?

Scenario	Gross profit	Net profit	ROI	ROAS
Base	20,000	11,800	143.9%	4.9
A: margin falls to 25%	10,000	1,800	22.0%	4.9
B: revenue halves to 20,000	10,000	3,400	51.5%	3.0

Scenario A is the single most important point in this article: ROAS does not move at all when margin falls from 50% to 25% — it is blind to margin. ROI, meanwhile, collapses from 143.9% to 22.0%, because it is the number actually measuring profit. Judge campaigns on ROAS alone and you can keep "winning" on a product that is genuinely earning less and less.

Scenario B shows why a fixed upfront fee is a risk at lower volume: revenue halves, but the DKK 5,000 upfront does not. ROI falls by a larger proportion than revenue does. The bigger the fixed share of your cost, the more ROI depends on volume holding up.

Breakeven: how much revenue do you need?

Set net profit to 0 and solve for revenue (R), keeping the same DKK 5,000 upfront, 8% commission and 50% margin:

0.50R − 5,000 − 0.08R = 0 → 0.42R = 5,000 → R = DKK 11,905

Below DKK 11,905 in tracked revenue, this deal loses money. Running this calculation before you sign a deal — not after — tells you exactly how little the campaign needs to sell for the economics to work.

The most common mistakes in an ROI calculation

• Using revenue instead of gross profit. This turns the calculation into ROAS with a different label — see scenario A above for how large the gap can be.
• Leaving UGC and usage rights out of the cost side, while counting reused content on the sales side. Pay for it, use it, and count both — see worked example: upfront + UGC rights + commission for how to keep the three value layers separate.
• Too short an attribution window. Influencer sales often trail the post by several days. A window that's too tight systematically undercounts revenue and makes ROI look artificially low — see how to track influencer marketing performance.
• Ignoring the fixed upfront fee when scaling up or down. ROI on a single creator doesn't automatically tell you ROI at ten — fixed costs behave differently at different volumes.
• Forgetting returns and refunds. They reduce real revenue and gross profit after the campaign has closed, but rarely get subtracted in the first-pass calculation.
• Comparing ROI percentages across campaigns with very different gross margins without naming the margin. Two campaigns with the same ROI can represent very different products and strategies.

What's a "good" ROI?

There is no universal number, and any source giving you one is guessing. A "good" ROI depends on your gross margin, your alternative use for the same money, and what else you bought beyond direct sales — content, rights, reach. A brand at 60% margin can accept a much lower ROI percentage and still earn more currency than a brand at 20% margin hitting a high ROI percentage.

Rather than chasing an industry figure: track ROI on your own campaigns over time, and use the breakeven calculation above to set a floor you know you can defend. For how to size the campaign budget itself before you get this far, see how to set an influencer marketing budget.

Make Influence's operational perspective

In Make Influence's experience, the most common reason a brand keeps running a campaign that is genuinely losing money is that it is only looking at ROAS. The ROAS figure stays flattering even as margin erodes — that is exactly what scenario A above shows. We recommend recalculating ROI whenever gross margin changes meaningfully: after a price change, a change in cost of goods, or a new discount code, not just once at campaign launch.

The other recurring problem is clean input data. The ROI formula is only as good as "tracked revenue" and "total cost" — both require reliable per-creator attribution and commission that reconciles against real orders. In Make Influence, every creator gets their own tracked link and code, and commission reconciles against attributed sales automatically, so the inputs to this formula come out of the system rather than a spreadsheet.

Checklist before you calculate ROI

• Know your gross margin on the products actually sold — not a company-wide average
• Do you have tracked revenue per creator, not just per campaign? See how to track influencer marketing performance
• Have you counted every cost — upfront, commission, UGC, usage rights, product and ad spend?
• Is the attribution window set before you compare figures across campaigns?
• Have you calculated the breakeven revenue before signing the deal?
• Are you combining both discount codes and tracking links, rather than relying on just one? See discount codes vs tracking links

FAQ

Is ROI the same as ROAS?

No. ROAS is revenue divided by cost and is blind to gross margin. ROI uses profit — revenue multiplied by gross margin, minus cost — which is why it's the number that actually shows whether a campaign made money. For what actually counts as a "good" ROAS number on its own terms, see what is a good ROAS for influencer marketing.

What counts as "cost" in the ROI formula?

Everything you paid to run the campaign: upfront fees, commission, UGC production, usage rights, product cost if seeded, and ad spend if you ran the content as paid ads.

What's a good ROI for influencer marketing?

There is no universal number. It depends on your gross margin and your alternative uses for the same money. Use the breakeven calculation to set your own floor instead of looking for an industry average.

Can I calculate ROI if I can't track every sale?

Use the best tracking you have, set a realistic attribution window, and watch lift in direct traffic and branded search as a supplementary, unattributed signal. See how to track influencer marketing performance for how to handle attribution gaps.

Should I count the value of reusable content in ROI?

Yes, if you actually run it as ads — but count it as its own contribution to gross profit over the period the content is used, not as part of the original campaign's tracked sales. See worked example: upfront + UGC rights + commission for the model.