Revenue growth rate measures the percentage change in a company's sales over a defined time period, typically calculated quarter-over-quarter or year-over-year. This metric serves as a primary indicator of business momentum and market demand, showing whether a company is expanding its customer base, increasing prices, or capturing larger market share.
The calculation is straightforward: subtract the previous period's revenue from the current period's revenue, divide by the previous period's revenue, and multiply by 100. For example, if a company generates $5 million in revenue this year versus $4 million last year, the revenue growth rate is 25%.
Why It Matters
For angel investors, revenue growth rate often carries more weight than profitability when evaluating early-stage companies. A startup burning cash but growing revenue at 200% annually demonstrates product-market fit and scaling potential that can justify continued investment. Sustained growth rates above 20-30% annually indicate a company is outpacing most competitors and gaining market traction. However, investors must distinguish between healthy, sustainable growth and artificial expansion driven by unsustainable customer acquisition costs or unprofitable pricing strategies.
Example
Consider a SaaS company that reported $2 million in Q1 revenue and $2.6 million in Q2 revenue. The quarterly growth rate is 30% ($600,000 increase divided by $2 million). If this company maintains similar quarterly growth, it would achieve approximately 120% annual growth—a rate that would attract significant investor interest in the software sector. However, if Q3 revenue only reaches $2.7 million, the growth rate drops to just 3.8%, signaling potential market saturation or competitive pressure. Angel investors would scrutinize this deceleration closely, examining whether it represents seasonal variation, operational hiccups, or fundamental business challenges requiring strategic intervention.