As of the latest data, the median Series B post-money valuation is $150–200M for B2B SaaS — down roughly 40% from the 2021 peak, though Carta's Q1 2026 data shows Series B pre-money valuations climbing again, up 17.2% year over year.
This is the new normal. The founders who are still anchoring to 2021 peak comps when entering Series B conversations are wasting their own time and burning trust with investors who have watched the market reprice in real time. The good news is the bar is clear, the data is clean, and the investors who are writing Series B checks in 2026 are doing so with genuine conviction — not FOMO capital.
Median Series B Post-Money Valuation: The Latest Data by Company Type
Based on Carta State of Private Markets 2025, PitchBook US VC Valuations Report Q4 2024, and CB Insights data, here is where the market has settled for Series B post-money valuations, check sizes, and dilution by company type.
| Company Type | Median Check | Pre-Money (Median) | Post-Money (Median) | ARR Required |
|---|---|---|---|---|
| B2B SaaS | $30–40M | $120–160M | $155–200M | $5–10M ARR |
| AI-Native SaaS | $40–60M | $260–440M | $300–500M | $3–8M ARR |
| Dev Tools / Infra | $35–50M | $140–200M | $180–250M | $3–7M ARR |
| Fintech / Regulated | $30–50M | $130–180M | $165–230M | $8–15M ARR |
| Consumer / PLG | $25–35M | $90–130M | $120–165M | Strong growth + retention |
Sources: Carta State of Private Markets 2025, PitchBook US VC Valuations Report Q4 2024, CB Insights Global Venture Report 2025.
2021 Peak vs Today's Median: The Full Correction in Numbers
The 2021 Series B market was driven by near-zero interest rates, crossover hedge funds flooding private markets with capital, and a consensus that SaaS multiples would hold at 30–40x revenue. All three of those assumptions broke simultaneously in 2022. Here is the delta across the metrics that matter.
Median Post-Money Valuation
2021 Peak
$280–400M
–40–50%
Current Median
$150–200M
Median Check Size
2021 Peak
$40–60M
–25–30%
Current Median
$30–40M
Median Pre-Money Valuation
2021 Peak
$230–360M
–40–45%
Current Median
$120–160M
Founder Dilution
2021 Peak
14–18%
+3–4pp
Current Median
18–22%
Median ARR at Series B
2021 Peak
$3–5M
+50–100% bar
Current Median
$5–10M
Series A → B Conversion
2021 Peak
~55%
–15pp
Current Median
~40%
What Series B Investors Actually Require in 2026
Series B is a fundamentally different raise from Series A. A Series A investor bets on a thesis and a team. A Series B investor bets on a machine — repeatable revenue, predictable expansion, and a unit economics story that holds under scrutiny. The bar has risen significantly from where it sat even in 2023.
The firms writing the largest Series B checks in 2026 — Bessemer, Andreessen, General Catalyst, Lightspeed — are running deeper diligence than at any point in the last decade. You can compare how these metrics benchmark against public SaaS peers on the SaaS Valuations Dashboard.
ARR: $5–10M with 80%+ YoY growth
Hard minimum for most top-tier Series B leads — sub-$5M raises require exceptional growth or large market signal
Net Revenue Retention >110%
Non-negotiable for a premium valuation — NRR below 100% will compress your post-money by 40–60%
CAC payback under 18 months
Anything above 24 months raises structural questions about go-to-market efficiency that haunt the entire process
Gross margin >70%
The baseline for SaaS — sub-60% gross margin means you are either early or have a pricing problem
Clear path to $50M ARR
Investors need to model a 4–5x return — at a $200M post-money, they need to see a pathway to $500M+ valuation in the next round
The AI Premium at Series B: Bigger Checks, Higher Post-Money Valuations
As of the latest data, the median Series B post-money valuation for AI-native companies is $300–500M — 2–3x the non-AI median. This premium is real and persistent, but it is no longer unconditional. Investors who wrote AI Series B checks at $400–600M post-money in 2023 have now seen enough two-year outcomes to know which factors actually predict retention.
The signal investors are now using to separate real AI companies from hype-inflated ones is NRR over time. An AI company with 130% NRR 18 months after first enterprise deployment is genuinely different from one with 85% NRR and a dashboard full of churned pilots. The former commands full premium; the latter gets priced like traditional SaaS.
AI-native: NRR >120%
$350–500M
Check: $50–70M
Full premium — top tier of current market
AI-native: NRR 100–120%
$250–350M
Check: $40–55M
Strong premium — still 1.5–2x non-AI median
AI-native: NRR <100%
$160–220M
Check: $30–40M
No premium — priced like traditional SaaS
Traditional SaaS: NRR >120%
$200–280M
Check: $35–50M
Top-quartile non-AI — quality retention commands premium
How the Dilution Math Works at Series B
Series B dilution mechanics are more complex than Series A because secondary components, bridge notes, and option pool expansions often layer together at close. Founders who do not model every piece before signing a term sheet regularly discover they sold 28% when they thought they sold 20%.
| Scenario | Pre-Money | Check | Post-Money | New Dilution | w/ Option Pool |
|---|---|---|---|---|---|
| Typical B2B SaaS | $140M | $35M | $175M | 20.0% | ~24–25% |
| Top quartile (no AI) | $200M | $50M | $250M | 20.0% | ~23–24% |
| AI-native median | $320M | $50M | $370M | 13.5% | ~17–18% |
| AI top quartile | $450M | $70M | $520M | 13.5% | ~16–17% |
Option pool expansions of 4–6% are standard at Series B. Always negotiate pool size and pre-money together — a 5% pool expansion on a $140M pre-money adds ~3.5% dilution that is invisible in the headline term sheet number.
Top-Quartile Series B in 2026: The Metrics That Get You There
Top-quartile Series B companies in 2026 are not just companies with higher ARR — they are companies that have demonstrated operating leverage and machine-like go-to-market execution. You can track how your metrics stack up against public-company benchmarks on the VC Benchmarking Dashboard.
ARR at close
$10–20M+
vs $5–10M median
YoY ARR growth
100–200%+
vs 80% as minimum acceptable
Net revenue retention
>125%
vs >110% as strong bar
CAC payback period
<12 months
vs 18 months acceptable
Gross margin
>75%
vs >70% as minimum
Post-money valuation
$280–500M+
vs $150–200M median
How to Navigate the 2026 Series B Market
The Series B process in 2026 is longer, more rigorous, and less forgiving than it was in 2021. Here is what actually moves the needle from a $150M post-money close to a $300M+ post-money close.
- →Do not start the Series B process until NRR is above 110%. This is the single variable with the most leverage on valuation. A company going from 95% to 115% NRR before pitching can add $50–100M to its post-money valuation without changing any other metric.
- →Lead with cohort data, not headline ARR. Investors who have been burned by top-line growth masking churn will dissect your cohort retention before they even look at revenue growth. Have 12+ month cohort data ready before your first meeting.
- →Time the raise to your growth curve, not your runway. The best Series B valuations come when trailing 3-month ARR growth is at its steepest. Raising 6 months ahead of a potential inflection point costs you real multiple on the post-money.
- →Model what $150M post-money vs $300M post-money means at exit. A 2x valuation premium at Series B creates enormous optionality at Series C — it buys you a higher bar but also a much better negotiating position in every subsequent raise.
As of the latest data, the median Series B post-money is $150–200M. Getting to $300M+ post-money is not about timing the market.
It is about building the metrics that make the valuation argument obvious before you walk in the room — NRR above 110%, CAC payback under 18 months, and a growth curve that is still steepening.
Track live SaaS and private company valuations on the SaaS Valuations Dashboard and benchmark your portfolio against top-quartile returns at Value Add VC. Originally published in the Trace Cohen newsletter.
Get VC data most people never see — free.
Weekly benchmarks, valuations, and fund data. No spam, unsubscribe anytime.