Raising a Series B requires shifting from storytelling to data. Investors expect $2M-$8M in ARR with 2.5x-3x YoY growth, strong unit economics (LTV:CAC > 3:1, <18 month payback), and a clear plan to scale. Prepare for deep diligence by building a data room and knowing your numbers cold.
Key takeaways
- Master your metrics: Aim for 3x YoY growth on $2M+ ARR with 80%+ gross margins.
- Prove scalability: Show a repeatable growth engine, not just founder-led sales.
- Raise for 18-24 months of runway, targeting 15-25% dilution.
- Build your data room before outreach; diligence is forensic.
- Run a structured process to create competition, even with inbound interest.
- Fix broken unit economics before you try to raise; capital magnifies flaws.
Your Series A was about selling the dream. You had a compelling insight, a core team, and early signs of product-market fit. An investor backed your conviction.
A Series B is where your story meets the spreadsheet. It’s not just a bigger Series A; it’s a transition from demonstrating potential to proving performance. The conversation shifts from vision to velocity, from narrative to numbers. Investors are no longer just betting on a team and a market. They are underwriting a predictable, scalable revenue machine.
If your Series A funded the search for a repeatable growth model, your Series B funds the factory that mass-produces it. You’re pouring fuel on a fire you’ve already proven you can control.
You cannot raise a Series B with a great story alone. You need data that proves your model works. While every business is unique, investors have clear benchmarks for what "good" looks like at this stage.
Annual Recurring Revenue (ARR): Most companies raising a Series B are between $2M and $8M ARR . Below $2M is possible only with truly explosive growth (e.g., 4-5x YoY) or elite capital efficiency.
YoY Growth Rate: 3x YoY is the gold standard. 2.5x is solid. Below 2x is very difficult unless you have other god-tier metrics. Investors will look at T6M (trailing six month) and T3M (trailing three month) growth to see recent acceleration.
Gross Margin: This must be a software business, not a services business in disguise. Aim for at least 75% , with top-tier companies at 80-85%+. If you have high implementation or support costs, be prepared to defend them.
Net Revenue Retention (NRR): This is a critical indicator of product stickiness and expansion. Good: >100%. Great: >120%. Elite: >140%. NRR below 100% (net churn) is a major red flag.
Customer Acquisition Cost (CAC) Payback Period: How many months of gross margin does it take to recoup the cost of acquiring a customer? Good: 12-18 months. Great: 6-12 months. Elite:
LTV:CAC Ratio: While harder to calculate accurately early on, a…
GMV…
Frequently asked questions
- What is a typical Series B valuation?
- It varies widely, but most Series B rounds land in the $60M to $150M post-money valuation range. Your specific valuation depends on your growth rate, margin profile, market size, and the competitive dynamics of your process.
- How long does it take to raise a Series B?
- Plan for a 4-6 month process from the first conversation to money in the bank. The intensive due diligence phase alone can take 6-8 weeks, so you need to start the process with at least 9 months of runway.
- Is it bad if my Series A investor doesn't lead the Series B?
- No, this is normal and expected. A new outside investor almost always leads the Series B. The critical signal is whether your existing major investors *participate* in the round by contributing their pro-rata share.
- What if I can't hit 3x YoY growth?
- You can still raise on sub-3x growth, but you must have a stellar compensating factor. This could be best-in-class capital efficiency (approaching profitability), elite net revenue retention (>140%), or signing a category-defining customer.
