Most investors check their account balance and mistake it for their return. But a growing account balance can mask poor returns if you’ve been adding money. And a shrinking balance can hide good returns if you’ve been withdrawing. Here’s how to calculate — and track — true investment returns.
Simple Return vs Time-Weighted Return
Simple return: (ending value − beginning value) ÷ beginning value. Accurate when no money is added or withdrawn. When you contribute regularly (401k, monthly transfers), you need a time-weighted or money-weighted return for accuracy.
Use our investment return calculator for projections. For actual historical returns, the calculation depends on cash flow timing.
The 4 Return Metrics Every Investor Should Know
1. Total Return
The percentage gain or loss on an investment including dividends, interest, and capital gains: (Ending Value + Distributions − Beginning Value − Contributions) ÷ Beginning Value + Contributions. This is what actually happened, but doesn’t account for timing.
2. CAGR (Compound Annual Growth Rate)
Formula: (Ending Value ÷ Beginning Value)^(1/years) − 1. This converts any multi-year return to an annual equivalent for easy comparison. $10,000 growing to $18,000 in 6 years: (18,000/10,000)^(1/6) − 1 = 10.3% CAGR.
3. Real Return (Inflation-Adjusted)
Nominal return minus inflation. If you earned 10% but inflation was 3%, your real return was approximately 7%. Long-term wealth is built on real returns, not nominal ones. Our inflation calculator shows purchasing power impact.
4. Risk-Adjusted Return (Sharpe Ratio simplified)
A 12% return with extreme volatility may be less desirable than a 9% return with low volatility. For most personal investors, comparing your return to a benchmark (like the S&P 500) over the same period is the most practical risk-adjustment.
What Return Should You Expect?
| Asset Class | Historical Annual Return | Real (Inflation-Adjusted) |
|---|---|---|
| US Stocks (S&P 500) | ~10% nominal | ~7% real |
| International Stocks | ~8-9% nominal | ~5-6% real |
| US Bonds | ~4-5% nominal | ~1-2% real |
| Real Estate (REITs) | ~9% nominal | ~6% real |
| Cash (HYSA) | ~4-5% (varies) | ~1-2% real |
Simple Quarterly Tracking System
Four times per year, record:
- Total portfolio value across all accounts
- Contributions since last check
- Investment gain/loss = (New Value − Old Value − Contributions)
- Percentage return = Investment Gain ÷ Average Balance
Investment and Net Worth Tracker Spreadsheet
Quarterly portfolio tracking with automatic return calculations, CAGR analysis, and benchmark comparison column. Enter your numbers quarterly — the spreadsheet does the math.
Get the Tracker →Historically, the US stock market (S&P 500) has averaged approximately 10% per year including dividends, over long periods. Individual years vary from -40% to +50%. The 10% average only applies over long periods (20+ years) with consistent investment through downturns. Future returns may differ from historical averages.
If your portfolio is mostly US stocks, compare to the S&P 500 total return index (includes dividends). If you hold international stocks, compare to MSCI World. Most brokerage platforms show benchmark comparisons automatically. Beating your benchmark consistently over 5+ years is genuinely impressive — most active fund managers don’t.