Calculate revenue growth rate and CAGR (Compound Annual Growth Rate) between any two periods.
Revenue growth rate measures how quickly your revenue is expanding from one period to the next. The same formula applies whether you're measuring month-over-month (MoM), quarter-over-quarter (QoQ), or year-over-year (YoY) growth — just make sure both inputs cover the same length of time.
YoY growth is the most meaningful for most businesses because it eliminates seasonality. A retail business might grow 60% from November to December every year — that's not a signal of acceleration, just the holiday season. Comparing December this year to December last year (YoY) removes that seasonal effect and gives a true picture of business trajectory.
MoM growth is useful for very fast-growing businesses (where YoY would lag the current reality) and for spotting short-term trends or anomalies. A business growing 15% MoM is growing approximately 435% YoY — extraordinary if sustained, unsustainable if it implies exponential scale forever.
CAGR (Compound Annual Growth Rate) converts multi-year total growth into an equivalent steady annual rate. Growing from $1M to $3M over 4 years is 200% total growth — but what was the annual rate? CAGR = (3/1)^(1/4) - 1 = 31.6% per year. That single number lets you compare this business's performance against any other investment or benchmark on a level playing field.
CAGR is always lower than the arithmetic average of annual growth rates for the same period. If revenue grew 50%, 20%, 30%, and 10% in four consecutive years, the arithmetic average is 27.5%. But the CAGR of the actual ending value compared to starting value would be lower, because compounding means the 30% growth in year 3 applies to a different (and likely larger) base than you might expect.
Investors and analysts frequently use CAGR to evaluate business performance over 3-5 year periods. It smooths out volatile individual years to show the underlying growth trajectory. When pitching to investors, CAGR from a low base year can look impressive — context about what the base was matters.
Growth rate expectations vary dramatically by company stage and industry. For early-stage startups (under $1M ARR), 15-20%+ monthly growth is the YC benchmark for top-performing companies. For growth-stage SaaS companies ($1M-$10M ARR), 2-3× annual growth ("T2D3" — triple, triple, double, double, double) is considered strong.
For mid-market companies ($10M-$100M ARR), 30-50% annual growth is generally considered strong. Public technology companies with over $1B in revenue are considered fast-growing at 20-30% annually. Mature public companies in stable industries: 5-15% annual growth is typical. The "growth at all costs" era has given way to more emphasis on efficient growth — revenue growth combined with improving margins.