LinkedIn Ad Cost Threshold Calculator
Check whether your contract value justifies premium B2B LinkedIn CPCs.
Justified, a $9,000 contract at 70% margin absorbs your $750 CAC. LinkedIn's premium CPC pays off here.
CAC here is media-only. Fully-loaded CAC (SDR time, tooling, content) is higher, hold extra headroom below the ceiling.
About this calculator
LinkedIn's CPCs routinely run $8-15, several times what Google or Meta charge, and whether that premium is worth paying depends entirely on what a closed deal is worth to you. This calculator chains CPC through landing conversion and lead-to-customer close rate into an implied CAC, then checks that CAC against what your contract value and margin can actually support.
How to use it
- Enter your LinkedIn CPC, landing page conversion rate, and lead-to-customer close rate.
- Enter your typical contract value and gross margin.
- Read cost per lead, implied CAC, and the max supportable CAC your contract value and margin allow.
- If implied CAC is below the max supportable line, the spend is justified; if it exceeds it, LinkedIn is too rich for this deal size as configured.
Methodology
Clicks per lead is 100 ÷ landing conversion rate, and cost per lead (CPL) is CPC × clicks per lead, the cost to generate one lead from a given click cost and landing page performance.
Leads per customer is 100 ÷ close rate, and implied CAC is CPL × leads per customer, chaining media cost all the way through to an acquired customer.
Max supportable CAC is contract value × gross margin, the ceiling that keeps the deal profitable after acquisition cost, before any other cost of delivery.
This is media-only CAC, it does not include SDR time, sales headcount, tooling, or content production. Fully-loaded CAC will run higher, so treat any "viable" verdict here as needing extra headroom below the ceiling, not as the full picture.
FAQ
LinkedIn's targeting runs on verified professional data, job title, seniority, company size, which advertisers pay a premium for because it reaches decision-makers more precisely than interest or keyword targeting elsewhere. That precision is the entire case for using it despite the cost.
Use your own historical landing page and close rates for LinkedIn-sourced leads specifically if you have them, B2B benchmarks vary too widely by industry and offer to be reliable defaults. If you don't yet have LinkedIn-specific data, use your blended paid-lead conversion rates as a starting estimate.
Improve landing page conversion or close rate to shrink the implied CAC, raise contract value by upselling or targeting larger accounts, or reserve LinkedIn spend specifically for your highest-value segment rather than running it across your full funnel.
It means the unit economics work at current volume and rates. Scaling further usually raises CPC and can compress conversion and close rates as you move past your best-fit audience, re-run the numbers with updated inputs before committing to a much larger budget.