Investment Calculator
Investment Planner
Your Investment
$
$
Regular deposits added each month
%
Assumptions
%
S&P 500 • CPI • officialdata.org
$1,234,567
Final Balance
After 20 years of growth
$130,000
Total Contributions
$10k initial + $500/mo
$1,104,567
Total Investment Earnings
From compounding growth
7.0%
CAGR
Inflation-adj: 3.9%
Balance Growth
Where Your Money Comes From
Conservative
6.0%
$987,654
Base Case
7.0%
$1,234,567
Aggressive
8.0%
$1,543,210
📥 You Invest
$130,000
$10,000 initial + $500/mo for 20 years
📈 Market Growth
$1,104,567
7.0% annual return compounded monthly
💰 Purchasing Power
$683,000
Inflation-adjusted value in today's dollars
📊 Effective Return
3.9%
Real return after 3.0% inflation
Year-by-Year Breakdown Year 1-20
| Year | Balance | Contributions | Earnings | Inflation-Adj |
|---|
📚 Data Sources
- S&P 500 Historical Returns — Annualized total returns (1926-present)
- Bureau of Labor Statistics — Consumer Price Index (CPI) data
- Investopedia — CAGR methodology