SaaS CAC follows the same formula as any other CAC — total acquisition spend divided by new customers. What is different is the composition of that spend, the typical absolute level, and the LTV that justifies it. SaaS CAC of $1,000 is healthy when LTV is $5,000. The same CAC is catastrophic for a DTC store with $200 LTV.
What is included in SaaS CAC
- Sales team costs — fully loaded (salary, benefits, commission, ramp). For B2B SaaS, this is often the single largest line.
- Marketing spend — paid ads, content production, SEO tooling, conferences, sponsored research, lifecycle marketing.
- SDR and BDR costs — lead generation team.
- Sales tooling — CRM, sequencing, intelligence, prospecting tools.
- Demo and trial infrastructure — including the cost of free trials if you offer them.
This is why B2B SaaS CAC is often 10–50x higher than DTC ecommerce CAC. A sales team is expensive.
What is different about SaaS CAC compared to ecommerce
- Higher absolute CAC. B2B SaaS CAC commonly ranges $500–10,000+; ecommerce CAC commonly ranges $30–300.
- Longer payback periods. SaaS often pays back CAC over 12–24 months. DTC ecommerce typically aims for 3–9 month payback.
- Higher LTV. SaaS annual contracts with low churn compound LTV faster than monthly DTC cycles.
- Different healthy ratios. SaaS targets the same LTV:CAC ≥ 3:1 benchmark but with much higher absolute numbers on both sides.
SaaS CAC benchmarks
Rough ranges by go-to-market motion:
- Self-serve SaaS (PLG): $100–500 CAC.
- SMB sales-led SaaS: $500–2,500 CAC.
- Mid-market sales-led SaaS: $2,500–10,000 CAC.
- Enterprise sales-led SaaS: $10,000–100,000+ CAC.
What is sustainable depends on ARPU and retention. See customer lifetime value SaaS for the matching LTV picture.
Why this matters for Shopify subscription brands
Most Shopify subscription merchants are not SaaS — but some sell B2B subscriptions through Shopify (wholesale, professional, office), and those CAC numbers look much more like SaaS than DTC. If you sell B2B through Shopify, benchmark your CAC against SaaS comparables, not DTC ecommerce. See customer retention B2B for the matching retention math.