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How to audit your LinkedIn ads agency: five numbers to ask for, four settings to check, ten red flags

Quick Answer
To audit your LinkedIn ads agency, ask for five numbers and check four settings. The numbers, against the 2026 benchmarks: cost per landing page click ($17.54 median, $9.18 good), landing page CTR (0.23% median, 0.38% good), cost per lead split by content and demo ($164 and $343 median; $67 and $131 good), account-level frequency (2 to 4ร— a month is average) and the share of spend on the LinkedIn Audience Network (should be zero). The settings: Audience Network and Audience Expansion off, the objective matching the goal (website visits for traffic, not brand awareness), manual bidding rather than maximum delivery, and no demo form on a single image in the feed. An agency that cannot produce the numbers in a day, or produces them from LinkedIn's default clicks column, has answered the question. Three or more of the ten red flags below at day 90 is the reason to switch.

The eight-layer audit is the one we run inside an account. This is the version for the client: what to ask an agency for, what the answer should be, and how to read it without logging in. Benchmarks are the median and good quarter across 944 accounts in Kiin Labs' 2026 panel.

The five numbers to ask for

Ask forMedianGoodWhat it tells youWatch for
Cost per landing page click (spend รท landing page clicks)$17.54$9.18What a visitor costs; the number the whole account runs onA "CPC" of $2 to $5: that is LinkedIn's clicks column, which counts reactions and comments
Landing page CTR (landing page clicks รท impressions)0.23%0.38%Whether the creative and audience fitA "CTR" over 1% on feed ads: total CTR again
Cost per lead, by offer$164 content ยท $343 demo$67 ยท $131Whether the offer and format fitOne blended number; a demo lead over $600 (a single image with a demo form)
Account-level frequency (from the reach report, not the campaign column)2 to 4ร— a month1.5 to 2ร—Whether the audience is being burned; campaigns report 3.5 when the account delivers 9.5Over 4ร— on an audience under 30,000 with no creative refresh
Share of spend on the Audience Network0%0%Whether budget is leaving LinkedInAny number; $274,000 across 107 audited accounts, up to 99% of one budget

Two more if you sell through forms or the inbox: form completion rate (10.8% content and 2.2% demo in the feed at the median; 40.7% in a message ad) and message ad open rate (42.6% median, 48.8% good) with cost per send ($0.42 median). All of these are one report away in Campaign Manager; an agency that needs a week to produce them is not looking at them.

The four settings to check yourself

You need read access to the ad account in your own Business Manager. If the account lives in the agency's Business Manager, that is the first finding: you do not own the history, the audiences or the data, and switching agencies means starting from zero.

  1. Audience Network and Audience Expansion. Open any ad set; both boxes should be unticked. Then in the report, Breakdown โ†’ Audience Network on/off. Any off-platform spend on a B2B account is waste until proven otherwise.
  2. Objective. Traffic campaigns on website visits (the cheapest visit, $11.33 on single image), thought leader ads on engagement (brand awareness only on cold audiences over 30,000), video on video views. Brand awareness used for traffic buys a $48 visit.
  3. Bid type. Manual bids, set low. Maximum delivery on every campaign is the setting that costs 128% more per engagement at the top of the bid range than the bottom, in the same account.
  4. Where the demo ask lives. A demo form on a single image in the feed: 2.1% completion, $600 a lead, 48 form opens per lead. The demo belongs in a message ad (31 to 40% completion) or behind a content offer.

Ten red flags

  1. The account is theirs, not yours.
  2. The report leads with impressions, clicks and CTR from LinkedIn's default column, and the cost per click looks four times better than the visit costs.
  3. One blended cost per lead that mixes downloads and demos.
  4. The Audience Network is on, or nobody knows.
  5. Brand awareness for traffic, or maximum delivery everywhere.
  6. A demo form on a single image in the feed still running after month one.
  7. No retargeting campaign after week six, or no exclusions from the demographics report.
  8. The same creative since launch. Engagement is down 9% after one pass of the audience and 22% after five; a small audience has seen it in 14 days.
  9. Leads reach the CRM late or not at all, and nobody has checked LinkedIn's 90-day retention or reconciled the counts.
  10. The fee is a percentage of spend, so the agency is paid more when the account is less efficient.

What a good report looks like

One page a month, in this order: spend and reach into the list with account-level frequency; landing page clicks, landing page CTR and cost per landing page click by campaign against the benchmark; leads and cost per lead by offer with the trend; form completion by format; message ad opens, sends and cost per send; engaged companies from the Companies tab and what sales did with them; opportunities and pipeline by source from the CRM; and the three changes for next month with the reason for each. Total CTR and LinkedIn's clicks can appear as an engagement line, labelled as such, never as traffic. The format we use is on the paid media page.

Five questions for the next call

  1. "What is our cost per landing page click, and how does it compare with the benchmark for our audience?" (The answer should be a number and a source.)
  2. "Which functions and titles did we exclude last month from the demographics report, and why?"
  3. "When was the creative last refreshed on each campaign, and what is the account-level frequency?"
  4. "Which companies engaged in the Companies tab last month, and who received the list?"
  5. "What will be different next quarter, and what number will tell us it worked?"

Stay, fix or switch

What you findDo
Numbers at or better than the good quarter; settings right; report readableStay. Ask for the next quarter's plan and leave them to it.
Numbers around the median; one or two settings wrong; the agency can explain each number and what changes nextFix. Give them 90 days against this page; accounts reach the good quarter between months three and six.
Three or more red flags at day 90; numbers in the bottom quarter; the five numbers took a week and came from the clicks columnSwitch. Move the account into your Business Manager first, export the audiences and leads, then choose with the twenty questions.

We run this audit free on read-only access and send one page. Most accounts we audit stay with their agency with a shorter list of changes; the ones that switch usually failed the first red flag. What the first 90 days with a new agency should look like is here.

FAQ

How do I know if my LinkedIn ads agency is doing a good job? +
Ask for five numbers and compare them with the benchmarks: cost per landing page click ($17.54 median, $9.18 good), landing page CTR (0.23% median, 0.38% good), cost per lead split by content and demo ($164 and $343 median; $67 and $131 good), account-level frequency (2 to 4ร— a month average), and the share of spend on the LinkedIn Audience Network (should be zero). An agency that cannot produce those five within a day, or produces them from LinkedIn's clicks column, is the answer.
What should I ask my LinkedIn ads agency for? +
Read access to the ad account in your own Business Manager (if the account is theirs, ask why); a report led by landing page clicks rather than clicks; cost per lead by offer type; the demographics report and what was excluded from it; the Companies tab export and who received it; the Audience Network breakdown; the creative refresh dates; and the bid strategy per campaign with the current bids.
What are the red flags with a LinkedIn ads agency? +
The account is in the agency's Business Manager rather than yours; reports lead with impressions, clicks and CTR from LinkedIn's default column; a blended cost per lead; the Audience Network on; brand awareness objective used for traffic; a demo form on a single image in the feed; maximum delivery bidding everywhere; the same creative for three months; no retargeting campaign; leads that reach the CRM late or not at all; and a fee that is a percentage of spend.
Is it normal for LinkedIn ads cost per lead to go up? +
On lead gen forms, yes, by about 37% by month three as completion falls 22%, while CPM falls 9%. A rising cost per lead with a falling CPM is creative and form fatigue, which a good agency refreshes around week four. A rising cost per lead with a rising CPM on the same audience is budget pressure or a bid change and should be explained.
How do I check the Audience Network setting myself? +
In Campaign Manager, open the ad set (campaign), scroll to the targeting block and look for 'LinkedIn Audience Network': it should be unticked. Then in the Advertise report, use Breakdown โ†’ Audience Network on/off to see how much spend went off-platform. Across 107 accounts we audited, $274,000 had, and in the worst case 99% of a budget.
Should I switch LinkedIn ads agencies? +
If three or more of the ten red flags apply at day 90, or the five numbers sit in the bottom quarter with no plan to move them, yes. If the numbers are median and the agency can explain each one and what changes next quarter, give it another 90 days; accounts that reach the good quarter usually do so between months three and six.
What is a fair way to run an agency audit? +
Ask for the five numbers and read access on a Monday; expect them by Wednesday. Compare with the benchmark ranges on this page, not with what the agency says is normal. Check the four settings yourself (Audience Network, objective, bid type, form placement). Then ask one question: what will be different next quarter and why. Kiin runs this audit free on read-only access and sends one page; there is no obligation and most accounts we audit stay where they are with a shorter list of changes.
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The full audit
LinkedIn Ads Audit: the eight-layer checklist we run inside an account โ†’

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Read-only access, one page back within a week: the five numbers against the benchmarks, the four settings, and what we would change. Free, no obligation.

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