What is CPM in influencer marketing?
CPM, or cost per mille, is the cost of a thousand impressions or views: what was spent, divided by the impressions it bought, multiplied by a thousand. In influencer marketing it is a media-buying unit for comparing paid amplification across creators and platforms, not a fee a creator is paid directly.
GlossaryBuying and measurement3 min read
How it is worked out
Take what was spent on the content you are measuring, divide it by the impressions that content earned, and multiply by a thousand. Where a platform reports views instead of impressions, the same sum gives a cost per thousand views, and the report should call it that, because a view and an impression are not counted the same way.
What goes into “spent” decides what the number means. A CPM worked out on the paid media alone describes the ad buy. One worked out on the content fee, the usage fee and the media together describes the campaign. Both are honest; they cannot be compared with each other, so a report states which one it printed.
CPM prices exposure, not attention and not sales. A cheap thousand impressions on content nobody acts on is not a saving, which is why the figure is read beside a cost per acquisition rather than on its own.
In India
Indian budgets are quoted in lakh and crore rather than millions, so the spend in the sum is usually written in lakh while the result is rupees per thousand impressions. Keep the unit visible in the report; a CPM is per thousand whatever unit the budget arrived in.
GST is added on top of a creator’s or an agency’s fee at the rate that applies to the service. Compare CPMs either both before GST or both after it: mixing the two makes one buy look dearer than it was. CPM is a buying convention, not a regulated measure: the platform counts the impressions, and the advertiser decides what goes into the cost.
How the desk uses it
CPM is one of the five columns on the desk’s weekly report, sent every Monday: reach, engagement rate, cost per acquisition, CPM and the next move (the report, column by column). It sits beside cost per acquisition on purpose. One says what exposure cost and the other what a customer cost, and each corrects the other.
Two rules hold on the sheet. A figure that has not been verified is marked as unverified rather than printed as fact, and a CPM is never totalled or averaged across creators: rates do not sum, and an average of rates is not a rate. On a roster of many small creators the desk also counts its own coordination hours back onto the CPM, because a rate card that leaves the hours out makes the cheapest option look cheaper than it is.
Questions brands ask
Is CPM what an influencer charges?
No. A creator quotes a fee per deliverable, with usage, production and exclusivity as separate lines. CPM is worked out afterwards, from what was spent and the impressions it bought, so that different buys can be compared.
Should a CPM include the creator’s fee or only the ad spend?
Either, as long as the report says which. A CPM on the media alone describes the ad buy; one on the fee, the usage and the media together describes the whole campaign. The two cannot be compared with each other.
Is a low CPM always a good result?
No. CPM prices exposure, not attention or sales. Read it beside a cost per acquisition: a low CPM on content nobody acts on is not a saving.
