annual rate of return calculator

What is an annual rate of return?

The annual rate of return tells you how quickly an investment grew each year, on average, over a specific period. Instead of just comparing starting and ending balances, this metric converts growth into an annualized percentage so you can compare investments across different time frames.

In practical terms, if your portfolio grew from $10,000 to $20,000 over 7 years, your annualized return shows the yearly growth rate that would produce that result if growth had been smooth and compounded.

Formula used in this calculator

This page uses the Compound Annual Growth Rate (CAGR) formula:

CAGR = (Ending Value / Beginning Value)^{(1 / Years)} - 1

CAGR is one of the most useful ways to evaluate long-term performance because it includes the effect of compounding.

How to use the annual rate of return calculator

• Enter your starting investment amount (Beginning Value).
• Enter your ending investment amount (Ending Value).
• Enter the number of years between those two values.
• Click Calculate Return to view results instantly.

What results you get

The calculator provides:

• Total Return over the full period.
• Annualized Return (CAGR) for year-over-year comparison.
• Simple Average Annual Return (total return divided by years).
• Estimated Doubling Time at the computed annualized rate.

Example calculation

Suppose you invested $25,000 and it grew to $40,000 in 6 years. Your total return is 60%, but the annualized return is lower than 10% because gains are spread across multiple years. CAGR gives the fair annual comparison figure.

Annualized return vs average return

Annualized return (CAGR)

Best for evaluating long-term investment growth. It reflects compounding and gives a cleaner performance benchmark.

Simple average annual return

Easy to compute, but less precise for compounding investments. Useful as a quick reference only.

Important notes and limitations

• CAGR assumes smooth growth, but real markets fluctuate year to year.
• This calculator does not model deposits/withdrawals made during the period.
• Returns shown are nominal returns and do not account for inflation, taxes, or fees.

Why this matters for financial planning

Knowing your annual rate of return helps with retirement planning, comparing fund performance, and setting realistic expectations. A small difference in annual return can create a large gap in wealth over decades.

Quick FAQ

Is a higher CAGR always better?

Usually yes, but risk matters. Two investments with the same CAGR can have very different volatility and drawdowns.

Can CAGR be negative?

Yes. If ending value is lower than beginning value, annualized return will be negative.

Should I use CAGR for short periods?

You can, but it is most informative over multi-year periods where compounding has time to play out.