Scaling Success: The Must-Have KPIs for Series A and B Tech Startups on Their Growth Journey
- Jeff Skinner
- Aug 28, 2024
- 4 min read

As an emerging tech startup, moving from Series A to Series B is an exhilarating yet challenging phase. You've secured your initial funding, validated your product-market fit, and now it's time to scale. But how do you ensure that your growth trajectory is on the right path? The answer lies in focusing on the right Key Performance Indicators (KPIs).
1. Revenue Growth Rate: The Pulse of Your Startup
Your revenue growth rate is the heartbeat of your startup. In the early stages, particularly for Series A companies, a 50-100% annual growth rate is not just impressive—it's essential. Investors want to see rapid growth that justifies their investment, and this metric is a clear indicator of your startup's potential.
As you move into Series B, while the growth rate might slow to 30-50% annually, the focus shifts towards sustainable and scalable growth. At this stage, you're no longer just proving your concept; you're building a solid foundation for long-term success.
2. Customer Acquisition Cost (CAC): Balancing Growth and Efficiency
Early-stage companies often face higher CAC as they aggressively push to acquire customers and capture market share. For Series A startups, expect a CAC ranging from $500 to $2,000. This is normal, especially as you're investing heavily in marketing and sales to build brand awareness.
However, as you scale into Series B, your CAC might increase slightly, falling between $1,500 to $3,000. The key here is not just to acquire customers but to do so efficiently. A lower CAC combined with a high customer lifetime value (CLTV) means your acquisition efforts are paying off.
3. Customer Lifetime Value (CLTV): Maximizing Your Customer Relationships
Speaking of CLTV, this metric becomes increasingly important as you scale. For Series A startups, your CLTV should ideally be 3-5x your CAC. This ratio indicates that the customers you're acquiring are generating significantly more revenue than what it costs to acquire them.
In Series B, as your customer base grows and you refine your offerings, aim for a CLTV that's 4-7x your CAC. This reflects a strong product-market fit, effective customer success strategies, and the ability to upsell and cross-sell effectively.
4. Sales Cycle Length: Speed vs. Strategy
The length of your sales cycle can be a double-edged sword. For Series A companies, a shorter sales cycle—30-60 days—is crucial for quickly generating revenue and building momentum. Speed is your ally as you close deals and grow your customer base.
However, as you enter Series B, the sales cycle may extend to 60-90 days. This isn't necessarily a negative; it often reflects a shift towards larger, more complex deals that require a more strategic approach. The goal here is to balance speed with the quality of deals you're closing.
5. Win Rate: Proving Your Value in the Market
Your win rate is a direct reflection of your competitive positioning and sales effectiveness. For Series A startups, a 10-20% win rate is common as you navigate the challenges of breaking into the market and competing against established players.
By the time you're in Series B, your win rate should improve to 20-30%. This increase demonstrates that your go-to-market strategies are working, your value proposition is resonating with customers, and your sales processes are becoming more refined.
6. Churn Rate: Retain to Gain
High churn can be a growth killer, especially for SaaS and subscription-based models. In Series A, expect an annual churn rate of 15-25%. This higher churn rate often reflects the growing pains of refining your product and finding the right customer fit.
As you scale into Series B, aim to reduce churn to 10-15% annually. A lower churn rate indicates that you're successfully retaining customers, which is crucial for sustaining growth and maximizing customer lifetime value.
7. Sales Pipeline Velocity: Driving Growth with Momentum
Sales pipeline velocity measures how quickly deals are moving through your pipeline and how much revenue you can expect to generate. For Series A startups, a velocity of $100,000 to $300,000 per month is typical, reflecting your efforts to build a robust pipeline.
In Series B, as your deal sizes grow and your sales processes mature, pipeline velocity should increase to $300,000 to $700,000 per month. Maintaining a high pipeline velocity ensures that you're not just growing but doing so at a pace that supports your long-term objectives.
8. Net Revenue Retention (NRR): Growing Through Your Existing Customers
NRR is a powerful metric that reflects how much of your revenue growth comes from your existing customer base. For Series A companies, an NRR of 100-110% is a solid start, indicating that you're retaining customers and generating additional revenue through upsells and cross-sells.
As you transition to Series B, aim for an NRR of 110-120%. This growth is driven by a strong customer success program that not only retains customers but also maximizes their lifetime value by expanding their usage of your products or services.
Conclusion: Scaling Smart with the Right KPIs
As a Series A or Series B tech startup, your growth journey is defined by the KPIs you choose to focus on. These metrics are not just numbers—they are the building blocks of your strategy, the indicators of your success, and the drivers of your decisions.
By tracking and optimizing these KPIs, you'll be better equipped to navigate the challenges of scaling, attract further investment, and ultimately achieve the long-term growth and success that every startup dreams of.
Keep these KPIs at the forefront of your strategy, and let them guide you through the exciting journey of scaling your startup to new heights.