LinkedIn Ads budget calculator for the most expensive click in B2B

LinkedIn sells the one thing no other platform can: the audience filtered by job title, seniority, company size and industry, declared by the people themselves. That precision is why a CPM of €45 to €70 is normal and why a €70 lead can be the cheapest customer on the account. It is also why a LinkedIn plan built on Meta's assumptions fails: half the click-through rate, five times the impression price, and a conversion rate that depends heavily on whether the lead stays inside LinkedIn (Lead Gen Forms convert 10 to 15 percent of clicks) or leaves for a landing page (3 to 5 percent).

The planner loads typical values per ad format for B2B lead generation and lets you overwrite each one. Use Campaign Manager's numbers as soon as you have four weeks of data; the presets are for the first plan, not the tenth.

Start from a goal when you know the pipeline sales needs; the planner returns the monthly budget and the daily figure for the campaign. Start from a budget when the number is set; the planner returns the leads, clicks and impressions it buys. On LinkedIn the second mode is often the honest one, because the answer to "how many leads does €3,000 buy" is usually "about forty", and it is better to say so before the campaign than after.

Add the close rate and deal size and the plan shows customers, CAC and ROAS. This is where LinkedIn tends to win: a €68 lead that closes at 15 percent into a €12,000 contract is a €453 CAC and a 26x return, and no cheaper channel gets near that for a B2B offer.

LinkedIn's Insight Tag attributes within a 30-day click window and needs the conversion to happen in the same browser. B2B buying does neither. The click happens on a phone in a feed, the demo request happens on a laptop a week later, the deal closes three months after that, and the person who signed the contract is not the person who clicked. Campaign Manager credits a fraction of the leads and almost none of the revenue, which is why LinkedIn looks expensive in every platform report and cheap in every CRM that carries the channel on the customer record.

The fix is to capture the li_fat_id click id server side, match the lead to it in the CRM regardless of device, and send the qualified lead and the closed deal back through LinkedIn's Conversions API, so the platform sees what its expensive impressions actually produced.