Investment Calculator
Project long-term investment growth and compare risk-adjusted returns across different asset classes.
Results
The Investment Calculator projects the final value of an initial investment after applying compound growth over the specified period. The output separates the original principal from the accumulated gains, showing the total percentage return and annualized rate.
Investment Return Analysis
Investment returns depend on 3 primary factors: the rate of return, the time horizon, and the compounding frequency. Longer time horizons amplify the effect of compounding, producing disproportionate growth in later years.
Nominal Return vs. Real Return
The nominal return is the raw percentage gain on an investment before adjusting for inflation or taxes. A $10,000 investment growing to $16,470 over 10 years produces a nominal return of 64.7%. The real return adjusts for inflation: at 3% annual inflation, the $16,470 has a purchasing power equivalent to approximately $12,251 in today's dollars — a real return of only 22.5%.
Risk-Return Spectrum
Higher potential returns carry proportionally higher risk of principal loss. Certificates of deposit occupy the lowest-risk position with guaranteed returns of 4–5% APY. Government bonds offer slightly higher returns (4–5%) with minimal risk. Corporate bonds yield 5–7% with moderate credit risk. Stocks have averaged 10% annual returns with significant short-term volatility.
Asset Class Comparator
Compare the projected growth of a single investment across 5 asset classes over your chosen time horizon. Adjust the investment amount and years to see the difference in outcomes.
Growth by Asset Class
Dollar-Cost Averaging
Dollar-cost averaging (DCA) is an investment strategy of making fixed-dollar investments at regular intervals regardless of market price. An investor contributing $500 per month buys more shares when prices are low and fewer shares when prices are high. Over time, this averaging effect reduces the impact of short-term volatility on the overall cost basis.
Tax-Advantaged Investment Accounts
There are 3 primary tax-advantaged account types for investment growth: Traditional IRA (tax-deductible contributions, taxed at withdrawal), Roth IRA (after-tax contributions, tax-free growth and withdrawal), and 401(k) (employer-sponsored, pre-tax contributions with potential employer matching). Placing CDs in an IRA or 401(k) defers income tax on the interest earned until distribution.
Calculate Investment Growth
Enter your investment details above to project long-term compound growth.
Calculate GrowthFAQs
How do I calculate investment returns?
Calculate investment returns by subtracting the initial investment from the final value, then dividing by the initial investment. The formula is Return = (Final Value − Initial Investment) ÷ Initial Investment × 100.
What is the average stock market return?
The average annual stock market return (S&P 500) is approximately 10% before inflation and approximately 7% after adjusting for inflation, based on historical data from 1926 to present.
Are CDs a good investment?
CDs are a good investment for capital preservation with guaranteed returns. CDs produce lower returns than stocks but carry zero principal risk and FDIC deposit insurance up to $250,000.
What is dollar-cost averaging?
Dollar-cost averaging is an investment strategy of making fixed-dollar investments at regular intervals regardless of market price, reducing the impact of volatility on the overall purchase cost.
How do I compare investments with different risk levels?
Compare investments using the Sharpe Ratio, which measures excess return per unit of risk. A higher Sharpe Ratio indicates better risk-adjusted performance.