LinkedIn ads for B2B: warm up your market before outbound

LinkedIn ads for B2B work when they reach the specific people you'll later sell to, and run long enough for those people to know your name before a rep gets in touch. Job-title targeting gets you close to your market. Contact-level targeting gets you the market itself: the exact people on your list, matched on LinkedIn and the other ad platforms they use.

That's the job for your Marketing-ready TAM. LinkedIn's research with the Ehrenberg-Bass Institute found that 95% of the buyers you could sell to aren't ready to buy today (LinkedIn, 2022). You won't close them this quarter. Ads are how they get to know you before they're ready, and why your reps' first call later isn't a cold one. The Marketing-ready TAM guide covers the 95:5 rule in more depth.

Why LinkedIn ads targeting falls short on its own

LinkedIn knows what people say about themselves: job title, company, seniority, skills. Targeting "VP Marketing, 50–500 employees, software, United States" gets you thousands of people who look like your buyers, and plenty who don't. Titles are inconsistent. Company data is approximate. Your best-fit accounts sit in the same audience as companies you'd never sell to.

And it never matches your sales team's list. In our Acme example, reps work 2,346 named Sales-ready contacts out of a 46,910-contact TAM. Title targeting reaches a different crowd, so marketing and sales end up warming and chasing different people.

Matched Audiences should fix that: you upload a contact list and LinkedIn matches it to members. The catch is that people sign up to LinkedIn with personal emails, so lists of work emails match poorly. Contactlevel's B2B match-rate benchmarks put raw business-email lists at 2–20% on most ad platforms. The contacts that don't match never see an ad at all.

Contact-level targeting with Contactlevel

Contact-level targeting means your ads reach specific people by name, instead of people who share their job title. Contactlevel, the ad platform AdsGTM is part of, does it in three steps:

1. Load your list. Upload a CSV, sync from HubSpot or Salesforce, or use Contactlevel's contact search. One data point per contact is enough: a LinkedIn URL, a work email, or name plus job title plus company domain.
2. Contactlevel enriches and matches it. Each contact gets 50–70 data points from Contactlevel's identity graph, and the audience syncs to your ad accounts.
3. Run campaigns as usual. The audience appears as a custom audience in your own ad accounts. You keep control of campaigns, creative and budget, and you pay ad spend to the platforms directly.

Contactlevel audiences match at 70–99% on LinkedIn, according to Contactlevel's LinkedIn ads page. Diane Seidle, Media Manager at Hilco Global: "They matched 20,000 prospects from a list that only gave us 7,700 before." B2Linked, a LinkedIn Ads agency, uses Contactlevel to reach nearly 100% of its customers' target lists.

In Campaign Manager, the audience shows up as a third-party contact list under Audience > Third Party > Contact List. LinkedIn needs at least 300 matched members before an audience can serve, and it takes 24–48 hours to populate after the sync. How contact-level targeting works goes deeper on the matching.

How to warm up your Marketing-ready TAM

Acme's Marketing-ready list is 44,564 contacts at 17,328 companies, split into Tier A (3,912 companies), Tier B (6,204) and Tier C (7,212). Here's how to turn that into campaigns.

1. Split by tier and persona. Give Tier A most of the budget. Run separate audiences for the economic buyer and the practitioner, because they care about different things.
2. Exclude who you don't want to pay for. Suppress customers, open opportunities and competitors. In Contactlevel, exclusions sync across every connected platform.
3. Keep the audience in step with your CRM. HubSpot and Salesforce audiences add and remove contacts from CRM filters on a schedule you choose, so a contact drops out of the warm-up campaign when a deal opens.
4. Lead with people, back it with proof. Thought leader ads for reach, company content for proof. Both are below.
5. Retarget the ones who engage. Give people who watched, clicked or visited a stronger next step.
6. Hand them to sales. Engaged contacts go to outbound, with context.

Plan for months, not a two-week test. Most of this list isn't buying this quarter, so you're paying for recognition that pays off when they are.

Thought leader ads

Thought leader ads promote a post from a person instead of your company page. LinkedIn says you can "boost thoughts from company employees, industry experts, customers, or content creators," using the Brand Awareness, Engagement or Video View objectives (LinkedIn).

I think they're the most underrated format in B2B. They work because they don't look like ads. A post from your founder about a mistake they made with their own pipeline gets read. A banner with "Book a demo" gets scrolled past.

Run them to your matched audience, not to your founder's followers. The post your head of product wrote last week, shown to 44,564 people who fit your ICP, is worth far more than the same post shown to whoever follows them. There's no extra fee for the format, since you pay LinkedIn's standard auction rates. Setup, specs and costs are in Contactlevel's thought leader ads guide.

What to post: one useful idea per post, in the poster's own voice. The intent topics on your Sales-ready list are a good guide to what the rest of the market will care about next. If a few hundred in-market accounts are researching a topic, write about the problem behind it.

Branded content

Thought leader ads build familiarity with a face. Company page content carries the proof: customer stories, short product clips, and document ads with a checklist or benchmark people will save. Give the 95% something useful now, without a form in the way. Lead gen forms make more sense later, for the people who've already engaged.

Put most of your reach budget behind thought leader ads and use company content for proof and for retargeting. Measure both on the same audience, so you're comparing like with like.

LinkedIn retargeting

LinkedIn builds retargeting audiences from website visitors (via the Insight Tag), video viewers, lead gen form openers and company page engagement. A website audience needs at least 300 matched member accounts before it goes live, and can take 48 hours to process (LinkedIn Help).

Retargeting is where you ask for more. People in your TAM who watched most of a video or read your pricing page get a stronger offer: a teardown of their setup, an event invite, a short call.

Know what you can and can't see. Contactlevel shows which named contacts clicked through and visited your site. LinkedIn reports ad engagement at company level.

Sequence ads before outbound

Warm outbound is outbound to people who've already seen you. The simplest version runs ads first and reaches out second.

Reps shouldn't say "I saw you clicked our ad." Reference the idea instead: "Dana posted about this last month. The short version is..." The outbound guide covers the LinkedIn, email and phone side, and one list for sales and marketing covers how both teams share the same accounts.

Beyond LinkedIn

Your buyers don't only spend time on LinkedIn. Contactlevel syncs the same audience to Meta, Google (including YouTube), Reddit, Microsoft and more.

Contactlevel reports Meta matching at 70–80% and Google Customer Match at 60–70%. Match rates are highest in North America, with the EU close behind and APAC about 20% lower (Contactlevel Audiences). Every platform has its own minimum audience size, covered in Contactlevel's guide to audience minimums. For which platform suits which job, see B2B advertising platforms compared.

What LinkedIn ads for B2B cost

Three separate costs, paid to three different places:

• The list. AdsGTM is a one-time price, from $2,900 for up to 50,000 contacts with LinkedIn URLs and work emails. Tiers are on the pricing section.
• Contactlevel Audiences. From $500 a month for 5,000 contacts as of October 2026, with larger, quarterly and annual plans on Contactlevel's pricing page. You only use credits for net-new contacts, so re-syncing costs nothing.
• Ad spend. Paid directly to LinkedIn and the other platforms. Benchmarks are in Contactlevel's LinkedIn ads cost guide.