A Series-B B2B SaaS company building an AI-assisted finance ops tool (think reconciliation, close automation, AP workflows) for mid-market CFO teams. ACV $4,800/year, 90-day average sales cycle, ICP is finance ops managers at companies with $20M-$200M revenue. They had grown to $18M ARR mostly on paid search and outbound, but search CPCs on "AR automation" and adjacent terms had hit $42 and their blended CAC was at $1,640. They wanted to test whether creator-led demand gen could break that ceiling. Internal benchmark: anything below $400 blended CPA on a qualified demo request would be considered a win.
They were skeptical. Most B2B teams have been burned on LinkedIn influencer programs that delivered impressions but no pipeline. Fair.
What we forecast
Forecast engine output: predicted blended CPA of $340 on qualified demo requests (CI: $278 – $419, 80% band). Predicted demo volume: 380 – 480 across 14 weeks. We were upfront that this was the highest-variance forecast we'd issued — B2B SaaS creator data is thinner than consumer, our model leans on 31 prior B2B placements vs 400+ for consumer.
Platform split: 55% LinkedIn native posts and newsletters, 30% YouTube finance/ops creators, 15% niche podcasts (audio-only, two episodes). We rejected Twitter/X — too noisy, too political, and our model couldn't find a B2B finance creator with intent-density above 6% on that platform in 2026.
Creator selection logic: we ranked candidates by a composite score combining (a) % of audience self-identified as finance/ops at companies in ICP revenue band, (b) prior post engagement from companies showing up in the client's HubSpot as in-pipeline or closed-won, (c) creator's own credibility signals (CPA, controller background, etc.). Final 9 candidates ranged from 18K to 240K followers — small audiences, very dense.
What we did
Final roster: 6 LinkedIn finance/ops creators (4 US, 1 UK, 1 CA), 2 YouTube channels (one US controller-turned-creator at 180K subs, one UK fractional CFO at 62K subs), and 2 podcast sponsorships on finance ops shows.
Format mix: LinkedIn creators produced one long-form post, one carousel, and one short demo video each. YouTube creators produced 1 full review video each. Briefs were tightly structured but creators had full editorial control on critique — and three creators did include "here's what's still missing" sections, which our client's CMO initially pushed back on. We held the line. Honest reviews convert in B2B.
Attribution stack: dedicated landing pages with UTMs per creator, plus a self-reported "how did you hear about us" field on the demo form, plus a 90-day post-campaign cohort comparison vs the prior quarter's organic baseline.
What happened
D90 final numbers: 412 qualified demo requests at a blended CPA of $312. That's 8.2% below our point forecast — solidly inside the band. Of those, 67 progressed to opportunity stage, and at D120 the closed-won attribution was $284K in new ARR, which against $145K spend is a payback period of under 7 months on ACV alone.
By creator: the UK fractional CFO with 62K subs was the standout — 84 qualified demos, $94 CPA, the lowest CPA we've ever recorded on a B2B campaign. Smallest audience, highest intent-density (her audience was 71% finance ops managers in ICP). The largest creator (240K LinkedIn) delivered the most impressions but only 38 demos at $612 CPA. Audience size is genuinely uncorrelated with B2B conversion above a 20K floor.
Outlier moment: one of the podcast sponsorships drove 27 demos from a single 90-second host-read. We've now seen this twice — host-read podcast ads in finance verticals punch far above their forecast weight.
What we got wrong: we under-forecast LinkedIn newsletter volume by ~40%. Newsletters in B2B are a sleeping channel and our model is still catching up to it.
The lesson
For B2B SaaS in considered-purchase categories, follower count is a vanity metric that actively misleads media planning. What matters is the % of an audience that fits your ICP and trusts the creator on the specific topic. A 60K-follower fractional CFO who built her audience by posting close-process workflows for 4 years will out-convert a 500K generalist business creator by 5-8x, every time. We've now validated this across 6 B2B campaigns.
What it means for your campaign
If you sell B2B software with ACV between $2K and $25K and a 60-120 day sales cycle, creator-led demand gen on LinkedIn and niche YouTube is probably the most underpriced channel in your mix right now. Do not run this playbook if your ACV is under $1,200 (the math gets ugly fast) or if your buying committee has more than 6 stakeholders (you need air cover from longer-form content marketing, not creator posts).