Compound Interest Example
$1,000 Compound Interest — 5 Years Example
How $1,000 grows with compound interest at 5%, 7%, and 10% over 5 years.
Scenario
$1,000 initial investment, 5-year period, monthly compounding.
Inputs
Initial Amount$1,000
Period5 years
CompoundingMonthly
Results
At 5% APY$1,284
At 7% APY$1,417
At 10% APY$1,645
Interest at 7%$417
Explanation
Over 5 years, $1,000 at 7% grows to $1,417 — a 41.7% gain. The difference between 5% and 10% is $361. Short time horizons limit compounding's power; the real magic happens after 20+ years.
Key Takeaways
- High-yield savings accounts currently offer 4–5% APY.
- Index funds have historically returned 7–10% annually before inflation.