What is Growth Rate?
The rate at which a business metric is increasing over time, most commonly applied to revenue (MRR/ARR growth) but also to users, traffic, or other key metrics.
Understanding the Details
Growth rate is the velocity indicator for your business. Month-over-month MRR growth, year-over-year ARR growth, and compounding growth rates tell you how fast you're moving and whether you're accelerating or decelerating. In SaaS, the 'Rule of 40' benchmarks health as growth rate + profit margin = 40%+, allowing trade-offs between growth and profitability. Growth rate contextualises other metrics: 5% monthly MRR growth from £10K is very different from 5% growth from £1M. Sustainable growth rate depends on the quality of that growth — customer retention, unit economics, and capital efficiency determine whether current growth rates are maintainable. Vanity growth (growing fast but burning cash on customers who churn) is worse than slower sustainable growth.
How It Works in Practice
MRR growth tracking
Monthly MRR growth of 8% compounds to 152% annual growth, putting the company in strong position for Series A fundraising.
Growth rate deceleration
Monthly growth declining from 10% to 6% over six months triggers investigation into slowing pipeline, increasing churn, or market saturation.
Growth efficiency
A company grows ARR by 100% while keeping CAC payback under 12 months, demonstrating efficient, sustainable growth.
Why It Matters
Growth rate determines fundraising potential, valuation, and competitive trajectory. Understanding and maintaining healthy growth rates is central to SaaS strategy.
What People Often Get Wrong
Higher growth rate is always better. Actually, growth quality (retention, margins, efficiency) matters as much as growth speed.
Growth rate should be constant. Actually, growth rates naturally decelerate as the base grows — maintaining the same percentage requires accelerating absolute numbers.
Growth rate equals business health. Actually, rapid growth with poor retention or unsustainable economics creates fragile businesses.
How We Handle Growth Rate
We help companies build sustainable growth by optimising the full funnel — acquisition, activation, retention, and expansion — rather than pursuing growth at any cost.
Related Terms
Common Questions
Need Help With Growth Rate?
If you'd like to discuss how growth rate applies to your business, we're happy to explain further.