Target Rating Points (TRPs)

Target rating points (TRPs) are gross rating points measured specifically against a campaign's defined target audience rather than against the whole population. Like gross rating points, they equal reach multiplied by frequency — but the reach and frequency are calculated among the target audience only. So if a schedule reaches half of the target audience an average of four times, it delivers two hundred target rating points. The point of TRPs is precision: a campaign almost never wants to reach everyone, it wants to reach a particular audience — a demographic, a category buyer, a defined segment — and TRPs measure delivery against exactly those people. They strip out the audience the advertiser does not care about and count only the weight delivered to the target, which makes them a sharper planning currency than population-wide rating points for any campaign with a specific audience in mind.

Target rating points matter because most advertising is aimed at a defined audience, and weight delivered to the wrong people is wasted weight. A schedule can rack up impressive gross rating points across the whole population while delivering far fewer target rating points, because much of its audience falls outside the target. Planning and buying on TRPs keeps the focus on the people who matter, and it lets buyers compare schedules on how efficiently they deliver the target audience rather than just bodies. TRPs are the natural denominator for target-audience reach-and-frequency planning and for efficiency metrics built on the target, ensuring a campaign's measured weight reflects the audience it was actually designed to influence rather than a flattering but irrelevant population total.

The defining difference between target rating points and gross rating points (GRPs) is the audience they count. GRPs are reach times frequency against the general population — every household or person in the measured universe, target or not. TRPs are the same reach-times-frequency calculation, but restricted to the target audience. So GRPs answer how much total weight a schedule delivered to everyone, while TRPs answer how much weight it delivered to the people the campaign cares about. A schedule can score high GRPs but lower TRPs if a lot of its audience sits outside the target, or it can be tightly aligned so the two are close. Because TRPs count only the relevant audience, they are the more meaningful figure for a targeted campaign, while GRPs describe gross reach into the whole population.

This distinction connects to cost per point as well. When efficiency is measured as cost per point, the points can be gross rating points or target rating points, and which one matters depends on the campaign. For a targeted campaign, cost per target rating point is the truer efficiency measure, because it prices weight delivered to the right audience rather than weight delivered to everyone. Confusing the two — planning a targeted campaign on GRPs, or comparing a GRP-based cost per point with a TRP-based one — overstates how efficiently the target was reached. The clean practice is to name the audience explicitly: say target rating points when the points are counted against the target, gross rating points when they are counted against the population, and never let one stand in for the other.

Using target rating points well means planning and buying targeted campaigns on the target audience, not the population — calculating reach and frequency among the people the campaign is meant to influence and expressing weight as target rating points. It means defining the target audience clearly and consistently (so the points are counted against a stable definition), comparing schedules on the target rating points they deliver rather than population-wide gross rating points, and pricing efficiency as cost per target rating point when the goal is a specific audience. It means reading TRPs as reach times frequency among the target, so you can trade reach against frequency deliberately, and being explicit in every plan about whether a figure is a target or a gross rating point, since mixing them quietly distorts both weight and efficiency.

The failures are planning a targeted campaign on gross rating points (so weight delivered to the wrong audience inflates the numbers), defining the target audience loosely or inconsistently (so the points lose meaning), comparing GRP-based and TRP-based figures as though they were the same, and treating accumulated target rating points as proof of effect when they measure delivered weight, not response. The discipline is to count rating points against a clearly defined target, use target rating points as the planning currency for targeted campaigns, price efficiency on the target, and always label whether a figure is gross or target — so a campaign's measured weight reflects the audience it was built to reach.

Target rating points (TRPs) — gross rating points counted against the target audience as reach times frequency — measure the advertising weight delivered to the people a campaign was built to reach.

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