Annual Rate of Return Calculator
Use this calculator to find your annualized return (CAGR), total return, and simple average annual return.
What is annual rate of return?
Annual rate of return tells you how fast an investment grew (or shrank) each year over a period of time. It helps you compare investments with different time horizons in a fair way. If one investment doubled in 10 years and another doubled in 6 years, the second one had the higher annual rate of return.
The most useful version for long-term analysis is the annualized return, often called CAGR (Compound Annual Growth Rate). CAGR assumes growth was compounded at a steady annual pace. Real investments move up and down, but CAGR gives you one clean yearly rate to summarize performance.
Formula used in this calculator
The calculator uses three key formulas:
- Total Return = (Ending Value − Beginning Value) ÷ Beginning Value
- Annualized Return (CAGR) = (Ending Value ÷ Beginning Value)1 / Years − 1
- Simple Average Annual Return = Total Return ÷ Years
How to use this annual return calculator
Step 1: Enter your beginning value
This is the amount you started with. It can be your original investment in a stock, fund, business, or savings account.
Step 2: Enter your ending value
This is what the investment is worth now (or at the end of your measurement period). Use the value after gains and losses.
Step 3: Enter years held
Use the total number of years. Decimals are fine. For example, 18 months is 1.5 years.
Step 4: Review all output metrics
- Total return (%) shows full-period gain/loss.
- CAGR (%) shows annualized compounded growth.
- Simple average annual return (%) shows linear yearly average.
- Growth multiple shows how many times your money changed (example: 1.50x).
Example calculation
Suppose you invested $10,000 and it grew to $15,000 over 5 years.
- Total return = (15,000 − 10,000) ÷ 10,000 = 50%
- CAGR = (15,000 ÷ 10,000)1/5 − 1 ≈ 8.45%
- Simple average annual return = 50% ÷ 5 = 10%
Notice the difference: 10% simple average is higher than 8.45% CAGR. That happens because simple averaging does not model compounding correctly.
CAGR vs average annual return: why the difference matters
Many people overestimate performance by dividing total return by years. That method can be useful for rough estimates, but it is not the best metric for long-term investing decisions.
CAGR gives you the equivalent “steady” annual rate that gets you from start to finish. If you are comparing mutual funds, ETFs, real estate portfolios, retirement accounts, or business projects, CAGR is usually the cleaner comparison tool.
Common mistakes when calculating annual rate of return
- Using calendar years when the holding period is shorter or longer.
- Ignoring fees, commissions, and expense ratios.
- Comparing pre-tax returns to after-tax returns.
- Confusing nominal return with inflation-adjusted (real) return.
- Using simple average return instead of CAGR for multi-year analysis.
How inflation changes the picture
A 7% annual return may sound excellent, but if inflation averages 3%, your real return is much lower. A rough approximation is:
- Real return ≈ Nominal return − Inflation rate
For precision, use the exact formula: (1 + nominal return) ÷ (1 + inflation) − 1. If preserving purchasing power is your goal, always check real returns.
When this calculator is most useful
- Reviewing stock or ETF performance over a custom period
- Evaluating real estate appreciation over several years
- Comparing retirement account growth between strategies
- Setting realistic annual return assumptions for planning
- Analyzing whether a project met your required return target
Frequently asked questions
Does this calculator include contributions or withdrawals?
No. This version assumes a single beginning value and a single ending value. If you add or withdraw money over time, use a money-weighted return method (IRR/XIRR).
Can annualized return be negative?
Yes. If your ending value is lower than your beginning value, the annualized return is negative.
Is CAGR guaranteed each year?
No. CAGR is a summary metric. Actual yearly returns can vary a lot.
Bottom line
If you want a fast, reliable way to evaluate investment performance, annualized return (CAGR) is a great starting point. Use this calculator regularly to compare opportunities, audit your portfolio progress, and make smarter long-term decisions.