Which channels pay back fastest?

MetricMonths to recover fully loaded acquisition cost per channel, on a gross-margin-adjusted basis

Unitmonths

Bar of days-to-CAC-payback per channel. Below 90 days typically healthy. Build by tracking cumulative contribution margin until it crosses CAC per channel. Channels above 180 days usually unsustainable. Example: Search 42 days, Meta 78, Affiliate 56, Display 124 (Display the marginal one).

CAC

Customer acquisition cost. Fully loaded sales and marketing spend in a period divided by new customers won in that period.

B2B SaaS and AI-native software, full-year 2025 actuals, gross-margin-adjusted CAC payback measured on new-customer acquisition cost divided by monthly gross profit; channel-level splits are the operator's own allocation of that same denominator · No large-sample public dataset publishes payback split by acquisition channel, so the global row is company-level payback and the channel reading has to be constructed internally by allocating S&M cost to channels. Definitions diverge materially: Benchmarkit and Aleph use gross-margin-adjusted new-customer CAC and land at 15 to 16 months, while the 2024 KeyBanc and Sapphire survey is reported near 20 months and consumer app datasets citing 4 to 7 months use ad spend over ARPU with no salary or margin adjustment. Net payback including expansion runs 30 to 40% shorter than gross for land-and-expand models, which is a different metric again. The KeyBanc figure is 2024 vintage in a 2026 reference.

The channel bars cluster tightly above 18 months with no fast-payback channel at all, so there is nothing in the mix that recycles cash and every growth increment has to be funded from the balance sheet.

Paid search 22 months, paid social 26 months, outbound 31 months, referral 19 months, with no channel under 18 and blended sitting at 25 months against a 14-month cash runway assumption.

• Allocate fully loaded cost, not media spend, before ranking channels; median B2B SaaS spends $2.00 in sales and marketing per $1 of new ARR and the majority of that is salary rather than media (Benchmarkit 2025), so a media-only denominator will rank outbound as cheap and it is not.
• Shift mix toward the channels the same datasets show as structurally cheaper rather than trying to optimize the expensive ones; referral runs approx. $150 CAC for B2B SaaS against $1,980 for outbound sales, a 13x gap that no bid optimization closes (Phoenix Strategy Group).
• Report gross and net payback side by side where expansion exists; net payback including expansion revenue is 30 to 40% shorter than gross for land-and-expand businesses, and using gross alone will kill channels that land small and expand well (Foundry CRO, drawing on ICONIQ 2026 and Benchmarkit 2025).
• Set the payback threshold from the cash position rather than the benchmark; under 12 months is the bar for self-funding growth and under 18 the efficiency zone, so a company with 14 months of runway should be cutting anything above 12 regardless of where the median sits.

1. Aleph x BenchmarkitCAC Payback Period Benchmarks for SaaS, 2026 SaaS & AI Performance Benchmarks · 2026 · n=342 SaaS and AI-native software companies, full-year 2025 actuals Median CAC payback 16 months, top quartile 6 months or fewer, bottom quartile 24 months or more, worst case in sample 48 months getaleph.com ↗
2. Benchmarkit2025 SaaS Performance Metrics Benchmarks · 2025 · approx. 1,000 B2B SaaS companies Median new CAC ratio $2.00 of S&M spend per $1 of new ARR in 2024, up 14% YoY, fourth quartile $2.82; CAC payback highly correlated to ACV band benchmarkit.ai ↗
3. Foundry CROCAC Payback Period Benchmarks 2026 · 2026 · aggregation of ICONIQ 2026 State of Software and Benchmarkit 2025, plus public filings Median B2B SaaS payback 15 to 16 months, top quartile 6 to 8; PLG 6 to 12 months at $702 median CAC, enterprise 18 to 36 months at $11,400 median CAC; net payback 30 to 40% shorter than gross for land-and-expand foundrycro.com ↗
4. SaaS MagSaaS Capital Efficiency Metrics: 2026 Benchmarks Guide · 2026 · aggregation of Benchmarkit 2025, ScaleXP 2025 and SaaS Capital 2025 survey data Payback by ACV band: SMB under $15K ACV 8 to 12 months, mid-market $15K to $100K 14 to 18 months, enterprise above $100K 18 to 24 months saasmag.com ↗
5. ICONIQ GrowthState of Software 2025: Rethinking the Playbook · 2025 · ICONIQ portfolio and broader software market panel CAC payback, net magic number, burn multiple and Rule of 40 stabilizing; net dollar retention settling at roughly 110 to 120% iconiq.com ↗
6. CO ConsultingCustomer Acquisition Cost Benchmarks by Industry (2026 Data) · 2026 · aggregation of First Page Sage, Benchmarkit and KeyBanc/Sapphire datasets Median CAC payback for private SaaS reported near 20 months in the 2024 KeyBanc Capital Markets and Sapphire Ventures SaaS Survey; First Page Sage LTV:CAC by industry runs 2.5:1 to 5:1 christopholivierconsulting.com ↗
7. Phoenix Strategy GroupCAC Benchmarks by Channel for 2025 · 2025 · aggregated channel CAC benchmarks across B2B and B2C campaigns Paid search CAC $802 B2B, Facebook $230, LinkedIn $982, organic search $290 to $942, referral $150 for B2B SaaS, outbound sales $1,980; CAC up 40 to 60% between 2023 and 2025 phoenixstrategy.group ↗
8. First Page SageCAC by Channel, 2026 Benchmarks · 2026 · First Page Sage client dataset across organic and paid channels Publishes CAC per channel for organic and inorganic lead generation and frames 3:1 LTV:CAC as the healthy floor firstpagesage.com ↗
9. The Zulu MethodSaaS LTV:CAC Ratio Benchmarks 2026 · 2026 · Benchmarkit 2025, Gartner 2025 CMO Spend Survey and SaaS Capital 2026 spending survey of 1,000+ companies Private B2B SaaS spends about 8% of ARR on marketing at the median per SaaS Capital 2026; median company spends $2.00 in S&M per $1 of new ARR thezulumethod.com ↗