Calculator Inputs
How to Use This Calculator
Step 1: Enter Your Initial Investment
Start by entering the amount of money you plan to invest initially. This could be your savings, inheritance, or any lump sum you want to grow over time.
Step 2: Set Your Expected Interest Rate
Enter the annual interest rate you expect to earn on your investment. Consider historical averages:
- Stock market: 7-10% annually
- Bonds: 2-5% annually
- High-yield savings: 1-4% annually
- Real estate: 8-12% annually
Step 3: Choose Your Time Horizon
Select how many years you plan to keep your money invested. The longer your timeframe, the more powerful compounding becomes.
Investment Strategies
Stock Market Investing
Average Returns: 7-10% annually historically
Best For: Long-term growth, retirement accounts
Real Estate
Average Returns: 8-12% with leverage
Best For: Tangible asset lovers, rental income
Bonds & Fixed Income
Average Returns: 2-5% annually
Best For: Conservative investors, portfolio diversification
Frequently Asked Questions
What's the difference between simple and compound interest?
Simple interest only calculates earnings on your initial principal. Compound interest calculates earnings on both your principal and accumulated interest, leading to exponential growth over time.
How often should interest compound for maximum growth?
More frequent compounding (daily vs. annually) results in slightly higher returns. However, the difference is often minimal compared to factors like time, contribution amount, and rate of return.
What's a realistic interest rate to expect?
For long-term stock market investing, 7-10% before inflation is realistic based on historical averages. Conservative investments like bonds typically yield 2-5%, while savings accounts offer 1-4%.