Average CAC for Series A Enterprise SaaS B2B Companies

24 months

Best-in-class (top quartile): 18 months · n=939

Methodology note: This source segments CAC payback by industry × customer size, not by company stage. The same 24-month payback applies across all 5 stages for saas b2b × enterprise. For more on this site's methodology, see methodology.

Sources

• Optifai B2B SaaS CAC Payback Benchmark (n=939) · Payback by Segment (SMB / Mid-Market / Enterprise ACV bands) · 2026-04-20

Optifai publishes CAC payback as a range per ACV band rather than a point estimate. The number above is the upper bound of Optifai's published range for this band (their conservative-case median); the 'best-in-class' value is the lower bound. The overall B2B SaaS median across all ACV bands in Optifai's n=939 dataset is 15 months. Optifai does not segment by company stage either, so the same range applies across all 5 stages within this band.