SaaS MRR Growth Calculator
Project your subscription revenue growth
How to Use This Tool
Enter your current Monthly Recurring Revenue in the first field. Input your expected monthly growth rate as a percentage, and specify how many months you want to project forward. Include your estimated monthly churn rate to get a more accurate net growth projection. Select your preferred growth model - exponential for typical SaaS growth, linear for steady predictable growth, or decelerating for more realistic long-term projections.
Formula and Logic
The calculator uses three different growth models:
- Exponential Growth: Final MRR = Current MRR × (1 + net growth rate)^period
- Linear Growth: Final MRR = Current MRR + (monthly gain × period)
- Decelerating Growth: Applies a decreasing growth rate over time to model realistic market saturation
Net growth rate accounts for both new customer acquisition and churn: (growth rate - churn rate) / 100.
Practical Notes
For SaaS businesses, typical monthly growth rates range from 5-25% depending on stage and market. Early-stage startups might see 20-50% growth, while mature companies often target 5-15%. Churn rates vary significantly by industry - B2B SaaS typically sees 3-7% monthly churn, while consumer SaaS can range from 5-15%. Consider your pricing strategy: higher prices might reduce churn but also slow growth. Market benchmarks suggest aiming for net revenue retention above 100% (negative churn) for sustainable growth.
Why This Tool Is Useful
This calculator helps SaaS founders make data-driven decisions about hiring, fundraising, and resource allocation. By projecting MRR growth, you can set realistic targets for your sales team, plan infrastructure scaling, and communicate growth expectations to investors. Understanding the relationship between growth rate and churn is crucial for pricing strategy and customer success investments. The tool also helps identify when growth might plateau, allowing proactive adjustments to your go-to-market strategy.
Frequently Asked Questions
What's a good MRR growth rate for SaaS?
Early-stage SaaS companies typically aim for 15-30% monthly growth, while mature public SaaS companies often target 5-15% annually. The right rate depends on your market, competition, and business model. Focus on sustainable growth rather than unsustainable hockey stick projections.
How does churn affect my growth projections?
High churn can completely offset new customer acquisition. For example, with 10% monthly growth but 8% churn, your net growth is only 2%. This tool accounts for this by calculating net growth rate, giving you a realistic picture of sustainable expansion.
Should I use exponential or linear growth model?
Exponential growth assumes constant percentage increases, which works well for early-stage startups with accelerating momentum. Linear growth assumes steady dollar increases, better for mature businesses with predictable sales cycles. Decelerating growth is often most realistic for long-term projections as markets saturate.
Additional Guidance
When using this calculator, consider your customer acquisition cost (CAC) and lifetime value (LTV) ratios. Sustainable SaaS businesses typically maintain LTV:CAC ratios above 3:1. Also factor in expansion revenue from existing customers - upsells and cross-sells can significantly boost growth beyond new customer acquisition. Monitor your MRR growth alongside other metrics like customer count, average revenue per user (ARPU), and cohort retention for a complete picture of business health.