Median B2B SaaS LTV:CAC is 3.2:1 across 939 companies. Top quartile sits at 5:1+; bottom quartile loses money on every customer. CAC payback should be under 12 months for SMB, under 18 for mid-market, under 24 for enterprise. Monthly churn under 3% separates winners.
“Aim for 3:1” is a useful starting point. It’s also lazy — that single number hides huge variance. A 3:1 ratio means very different things at pre-seed than at Series B. A 3:1 ratio with 24-month payback is worse than 2.5:1 with 8-month payback for any cash-constrained startup.
This article is a one-stop reference, pulled from public reports and benchmark studies surveying thousands of companies. Find your row and judge yourself against it.
LTV:CAC ratio benchmarks (B2B SaaS, 2025–2026)
| Segment | Below | Healthy | Best-in-class |
|---|---|---|---|
| Pre-seed / Seed | <1.5:1 | 2:1 — 3:1 | 3:1+ |
| Series A — B | <2:1 | 3:1 — 4:1 | 4:1+ |
| Series C+ | <2:1 | 3:1 — 5:1 | 5:1+ |
| B2B SaaS overall | <2:1 | 3:1 — 4:1 | 5:1+ |
| B2C SaaS | <1.5:1 | 2.5:1 — 3:1 | 4:1+ |
| Fintech | <3:1 | 4:1 — 5:1 | 5:1+ |
| Ecommerce | <1:1 (loss) | 2:1 — 3:1 | 3:1+ with retention |
Median B2B SaaS is 3.2:1 across 939 companies (Optifai, Q2 2025–Q1 2026). Top-quartile is 4:1–6:1 (Bessemer 2026). The bottom 20% are at 0.8:1 — losing money on every customer.
What this tells you: if you’re pre-seed at 2:1, you’re normal. At Series A, that same 2:1 is a problem. Stage-specific medians matter more than industry medians.
CAC payback period — the metric founders ignore until they can’t
If you commit one number to memory beyond LTV:CAC, make it CAC payback. It determines how much capital you raise and how long the runway has to be.
| Segment | Concerning | Healthy | Best-in-class |
|---|---|---|---|
| SMB ($10K–$50K ACV) | >18 mo | 8 — 12 mo | <8 mo |
| Mid-market ($50K–$250K) | >24 mo | 14 — 18 mo | <14 mo |
| Enterprise ($250K+) | >36 mo | 18 — 24 mo | <18 mo |
| Ecommerce / DTC | >12 mo | 3 — 6 mo | <3 mo |
| B2B SaaS median | >24 mo | 12 — 18 mo | <12 mo |
Median has stretched from 14 months in 2023 to 18 months in 2024 (Benchmarkit 2025). Payback also worsens as you scale — early-stage companies hit ~5 months; growth-stage SaaS extends to ~9 as core audiences exhaust.
Churn benchmarks — and the 1pp rule
| Segment | Concerning | Healthy | Best-in-class |
|---|---|---|---|
| B2B SaaS overall | >5%/mo | 2.5% — 5%/mo | <2%/mo |
| B2C SaaS | >10%/mo | 5% — 10%/mo | <5%/mo |
| Enterprise SaaS | >1.5%/mo | 0.5% — 1.5%/mo | <0.5%/mo |
Average B2B SaaS churn in 2025 is 3.5%/month. Cutting it from 3.5% to 2.5% lifts LTV by ~40%. A 1pp drop in monthly churn extends customer lifetime by 12+ months and lifts every other metric.
You can lower CAC by 20%, or lower churn by 1pp — both have similar effects on LTV:CAC. Retention compounds. CAC reduction doesn’t.
CAC by industry (2026)
| Industry | SMB | Mid-market | Enterprise |
|---|---|---|---|
| Fintech | $300 — $700 | $1,000 — $2,500 | $5,000 — $14,772 |
| SaaS general | $200 — $500 | $500 — $1,500 | $2,000 — $8,000 |
| Healthcare | $400 — $900 | $1,500 — $3,000 | $4,000 — $10,000 |
| EdTech | $50 — $300 | $500 — $1,500 | $2,000 — $5,000 |
| Ecommerce | £25 — £50 | £40 — £100 | (deal-based) |
Average B2B SaaS CAC in 2026 sits at ~$1,200 across all channels — up 14% from 2025. Sales cycles: SMB 1–3mo, mid-market 3–6mo, enterprise 6–18mo.
Ecommerce ROAS benchmarks by channel
| Channel | Concerning | Healthy | Best-in-class |
|---|---|---|---|
| Google Search | <3:1 | 4:1 — 6:1 | 8:1+ |
| Meta Ads (FB / IG) | <2:1 | 2.5:1 — 4:1 | 5:1+ |
| TikTok Ads | <1.5:1 | 2:1 — 3.5:1 | 4:1+ |
| Email (owned) | <5:1 | 10:1 — 30:1 | 40:1+ |
| Blended (MER) | <2:1 | 2.5:1 — 3.5:1 | 4:1+ |
2026 average ecommerce ROAS is 2.87:1, down from 2024. Always pair ROAS with CAC payback and contribution margin — a 4.5x ROAS campaign can yield just 7.8% effective margin after all costs.
What to do once you know your numbers
- Find your weakest dimension against the tables above.
- Move it by one band. Going from “concerning” to “healthy” on one metric beats tweaking three.
- Re-measure quarterly, not yearly. Cohort drift is real — Q1 customers behave differently to Q3 customers.
The most common failure pattern we see: fintech and SaaS startups who hit their CAC target but ignored payback. They scale on a 3:1 ratio with 24-month payback — and run out of cash before the model proves itself. Fix payback first, then scale acquisition.
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