LinkedIn is your priciest channel — and half of it comes back unqualified

1 What I look at (before I blame the platform)

• Audience expansion — is it on? LinkedIn quietly widens your audience "to people similar to your target." On a platform whose whole value is precision, that's the fastest way to pay top-dollar CPMs for lookalikes who don't fit. It's the first switch I look for, and usually the first one I turn off.
• Exclusions — who are you not paying to reach? Most accounts have none. Students, "open to work" job-seekers, interns, sub-scale companies, seniorities that can't sign off — all reachable, all excludable. An empty exclusion list means you're paying premium prices to reach every one of them.
• Seniority and job title — not skills alone. Skills-only targeting catches everyone who listed the skill: researchers, students, job-hunters, the curious. Layering job title + seniority tightens it to people who could actually put your product on a PO.
• Company size and industry — does it match who actually pays you? The most common miss on the whole platform: the audience isn't built from your real customers. It's built from what "sounded like" your market.
• The ICP itself — where did it come from? If the honest answer is "we picked functions and seniorities that felt right," there's the leak. Your best customers already define your ICP. The targeting should be reverse-engineered from them, not guessed at.

2 What I usually find (one real account)

Almost always: the audience is far too broad, and the premium CPMs are spraying across people who were never the buyer. The platform isn't overcharging — it's charging premium rates to reach a crowd you never meant to target.

Straight talk: this was a diagnosis, not a before-and-after. It's a pre-fix audit, so I'm not going to hand you a made-up "and then leads tripled" number. What I can show you is the exact same set of leaks, in your account.

3 What I changed

• Built the ICP from their customers, not their guesses. Started from who actually buys and closes, then rebuilt the audience backward from that.
• Split one bloated audience into per-persona campaigns. So each ad could speak to one buyer instead of shouting at four (in their case, ACOs vs. health plans — separate campaigns, separate messaging).
• Switched skills-only to job title + seniority. Cut the researchers, students and job-seekers who list the skill but never sign a contract.
• Turned off audience expansion and added exclusion lists. Stopped paying premium CPMs to reach lookalikes and the obvious non-buyers.

4 What happens next — and why it fixes your exact problem

And it's why the platform genuinely works when it's run tight. In 2025, LinkedIn was the only major B2B channel with positive return on ad spend — 121%, versus 67% for Google Search and 51% for Meta (eMarketer, 2025). That's the industry's number, not a client's — but it only shows up for accounts that earn the premium with precise targeting. Loose targeting is exactly what turns the most expensive platform into a money pit.

What that changes for you: the next time you pull the LinkedIn report, the leads in it look like your customers — right seniority, right company size, right function — because the audience was finally built from the people who actually pay you. The premium stops feeling like a tax and starts feeling like access.