What Is Annualized Return?
Annualized return, also called Compound Annual Growth Rate (CAGR), expresses the average annual rate at which an investment has grown over a specific period. Unlike simple average return, annualized return accounts for compounding, giving you the exact annual rate that would produce the observed total return if applied consistently each year.
Annualized return is the standard way to compare investments held for different periods. A 50% total return over 3 years and a 30% total return over 1.5 years cannot be compared directly, but their annualized returns (14.5% vs. 19.1%) clearly show which performed better on a per-year basis.
- 1Total Return = ($18,500 - $10,000) / $10,000 = 85%
- 2CAGR = ($18,500 / $10,000) ^ (1/5) - 1 = 13.1%
- 3Average Annual Gain = $8,500 / 5 = $1,700
- 4Doubling Time = 72 / 13.1 = 5.5 years
Annualized Return vs. Average Return
| Year | Annual Return | Portfolio Value | Notes |
|---|---|---|---|
| Year 0 | - | $10,000 | Starting value |
| Year 1 | +50% | $15,000 | Strong year |
| Year 2 | -33.3% | $10,000 | Drawdown year |
| Year 3 | +50% | $15,000 | Recovery |
| Year 4 | +10% | $16,500 | Moderate year |
| Year 5 | +12.1% | $18,500 | Moderate year |
The simple average of the returns above is 17.8% per year. But the actual CAGR is only 13.1%. The difference occurs because negative returns have a disproportionate impact. A 50% loss requires a 100% gain to recover. Always use CAGR for accurate performance measurement.
Historical Annualized Returns by Asset Class
| Asset Class | Annualized Return | Best Year | Worst Year | Std Deviation |
|---|---|---|---|---|
| S&P 500 | 9.8% | +52.6% | -43.8% | 19.7% |
| 10-Year Treasury | 4.6% | +32.8% | -11.1% | 7.7% |
| 3-Month T-Bill | 3.3% | +14.7% | +0.03% | 3.1% |
| Gold | 6.8% | +126.6% | -32.6% | 19.2% |
| Real Estate (REITs) | 9.2% | +38.5% | -37.6% | 18.5% |
How to Use Annualized Returns
Inflation-Adjusted Annualized Returns
Real (inflation-adjusted) returns show the actual increase in purchasing power. With 3% average inflation, a 10% nominal CAGR delivers only about 6.8% real CAGR. The formula for real return is: Real Return ≈ Nominal Return - Inflation Rate, or more precisely: (1 + Nominal) / (1 + Inflation) - 1.
A 5% annual return with 3% inflation gives only 2% real growth. Over 20 years, $10,000 grows to $26,533 nominally but only $14,859 in real purchasing power. Always consider real returns for long-term planning.