LinkedIn Ads have the highest CPMs of any major platform — often $40–80+ per thousand impressions. That cost is justified when you can precisely target senior decision-makers in specific industries who are genuinely in-market. It’s not justified when your targeting is too broad, your creative is generic, or your offer isn’t calibrated to a B2B buying journey. Let’s be honest about both sides.
The Targeting That Actually Works
Job title + company size + industry is the classic combination and still effective for reaching decision-makers at a relevant company type. The key is being specific: “Marketing Director” performs differently to “Director of Marketing” in some verticals because of how people self-select job titles.
Company list targeting (uploading a list of target accounts) is the most effective targeting available for enterprise B2B. If you’re running account-based marketing, LinkedIn’s Matched Audiences product is genuinely powerful when your account list is well-defined.
Retargeting website visitors is one of the best uses of LinkedIn budget — you’re reaching people who have already demonstrated intent, at a premium placement that reinforces your brand among professional audiences.
What Doesn’t Justify the CPM
Brand awareness at scale for SMB audiences — the cost-per-reach is too high compared to alternatives. For brand building, LinkedIn makes sense for enterprise audiences where the deal size justifies it.
Generic lead gen forms with a “Download our whitepaper” offer — these generate high volume, low-quality leads. The platform incentivises form submissions; the algorithm will find people who click forms. They’re often not your buyers.
Interest-based targeting alone — interests on LinkedIn are self-reported and broadly defined. Behavioural interest targeting is far stronger on Meta. Use job-based signals on LinkedIn.
The Ad Formats Worth Testing
Single image ads with direct, specific copy outperform generic brand messaging in most B2B categories. State the problem and the outcome — don’t save it for the landing page.
Thought leadership ads (boosting executive personal posts) drive strong engagement at lower CPMs than standard sponsored content because they look organic. Worth testing if your executives post quality content.
Conversation ads (formerly message ads) have higher CPM but very high visibility — they land in the inbox. Use them for highly targeted, high-value offers to small, specific audiences.
Measurement: The LinkedIn Attribution Problem
LinkedIn’s default attribution heavily over-credits itself via view-through attribution. Set your attribution window to “1-day click, 7-day view” as a starting point and triangulate with offline conversion data. The view-through conversions LinkedIn reports by default include anyone who was served an ad — even if they never clicked — and converted within a 30-day window. That’s not a LinkedIn conversion in any meaningful sense.
