CAC by channel for B2B SaaS: the 2026 benchmark
Not all acquisition channels cost the same per customer. A customer won through referral costs a fraction of one won through account-based marketing. For a B2B SaaS, picking channels without looking at their acquisition cost means flying blind. Here is what the public benchmarks say, channel by channel, and how to read these numbers for your own SaaS.
By Mathéo Ballasse · June 23, 2026
CAC by channel
Customer acquisition cost by channel, ranked from cheapest to most expensive. Figures in euros, see the methodology.
| Channel | CAC | Why |
|---|---|---|
| Referral | €157 | The lowest-CAC channel, carried by the referrer's trust. Often underused. |
| Email marketing | €469 | Very efficient when a base already exists to activate and warm up. |
| Public speaking | €477 | Conference speaking slots: strong credibility, but depends on getting stage opportunities. |
| Webinars | €555 | A good balance between live engagement and cost, especially for topics that need explaining. |
| Thought leadership SEO | €595 | In-depth SEO signed by experts, more efficient than generic SEO. |
| SEA (PPC / SEM) | €738 | Captures warm intent, but cost per click climbs on competitive keywords. |
| Video marketing | €750 | An engaging format but costly to produce at a professional level. |
| LinkedIn Ads | €903 | Very precise targeting of the B2B ICP, at the price of one of the highest costs per click. |
| Content marketing | €1,154 | Costly to kick off, but the compounding asset brings the CAC down over time. |
| Trade shows | €1,279 | Highly qualified leads and in-person relationships, but heavy logistics and cost. |
| SDR (human outbound) | €1,822 | Lets you target specific accounts, but the human cost weighs heavily on CAC. |
| Account-based marketing (ABM) | €4,291 | The highest CAC, reserved for very high-ticket accounts where it still stays profitable. |
How to read these CAC gaps
The gap between the cheapest and the most expensive channel is more than fivefold. The pattern is clear: the cheapest channels borrow trust or an audience that already exists, like referral or email on a base you can activate. The most expensive ones rent attention you do not own, advertising leading the pack.
Another important read: these numbers are climbing. Acquisition cost has risen 40 to 60% in two years, across all channels. A channel that is profitable today will not stay that way automatically tomorrow, and a channel built on your own audience protects you from that inflation.
The lowest CAC is not always the right channel
A cheap channel that does not reach your buyers, or that you cannot feed at volume, is worth nothing. Referral shows the best cost, but you cannot force it until you have happy customers willing to talk. It is a channel you earn, not a starting channel.
Before choosing, weigh each channel on three axes beyond cost. Volume: can it bring enough customers to matter. Fit: does it truly reach the people who decide the purchase at your company. And payback: how many months it takes to recover the CAC against what a customer brings in. A high CAC can still be excellent if the customer's lifetime value clears it by a wide margin.
Calculate your own CAC before choosing
These figures are international benchmarks from hundreds of companies, not your numbers. Your real CAC depends on your price, your close rate, and how mature your market is. The real test that matters is the ratio between a customer's lifetime value and their acquisition cost, a minimum of three to one is healthy for a SaaS.
The useful habit: calculate your CAC channel by channel with your own numbers, compare it to what a customer brings in, and concentrate your budget where the math holds up. It is this small calculation, done early, that saves you from burning months on a channel that never pays off.
Your tailor-made acquisition plan
We read your SaaS and hand you a complete plan: who to target, which channel, what to do.
Methodology
This study aggregates public customer acquisition cost (CAC) benchmarks by channel for B2B SaaS. This is not primary data, every figure links back to its published source. The CAC by channel figures come from an international benchmark with a uniform methodology (First Page Sage, roughly 120 companies, campaigns run between December 2021 and November 2024) and are converted here to euros (the sources are in US dollars, using 1 $ ≈ 0.92 €). Markets can differ from country to country in media costs, channel maturity, and deal size, so these figures are a general reference, not a guarantee. The complementary benchmarks and aggregated ratios come from additional sources cited below.
Sources
- B2B CAC by Channel, 2026 Benchmarks (First Page Sage, 2025)
- Coût d'acquisition client B2B : calculez le vôtre et comparez-le aux benchmarks (Oltega, 2025)
- Average Customer Acquisition Cost (CAC) Industry Benchmarks (Userpilot, 2026)
- CAC Benchmarks by Channel for 2025 (Phoenix Strategy Group, 2025)
To estimate your own cost per channel, use the channel cost calculator.