Compound Interest Calculator
Estimate your investment growth over time.
Year-by-Year Growth Schedule
| Year | Total Deposited | Interest Earned | End Balance |
|---|---|---|---|
| Year 1 | 16,000 | +1,025.75 | 17,025.75 |
| Year 2 | 22,000 | +2,596.93 | 24,596.93 |
| Year 3 | 28,000 | +4,755.88 | 32,755.88 |
| Year 4 | 34,000 | +7,548.22 | 41,548.22 |
| Year 5 | 40,000 | +11,023.14 | 51,023.14 |
| Year 6 | 46,000 | +15,233.63 | 61,233.63 |
| Year 7 | 52,000 | +20,236.78 | 72,236.78 |
| Year 8 | 58,000 | +26,094.13 | 84,094.13 |
| Year 9 | 64,000 | +32,872 | 96,872 |
| Year 10 | 70,000 | +40,641.85 | 110,641.85 |
About Calculator
The Compound Interest Calculator estimates how your investment grows over time by repeatedly reinvesting earned interest. The core formula is A = P × (1 + r/n)^(n×t), where P is the principal, r is the annual rate, n is compounding frequency, and t is time in years.
Compounding frequency significantly impacts returns. Monthly compounding yields more than annual compounding for the same rate and period, because interest earns interest more frequently.
This calculator helps savers, investors, and students visualize the power of compound growth — often called the "eighth wonder of the world" — over various time horizons.
Frequently Asked Questions (FAQ)
What is the difference between simple and compound interest?
Simple interest is calculated only on the original principal. Compound interest is calculated on the principal plus all previously accumulated interest, leading to exponential growth.
How does compounding frequency affect returns?
More frequent compounding (e.g., monthly vs annually) results in slightly higher returns because interest is reinvested sooner and begins earning its own interest earlier.
Does this account for taxes or inflation?
No. The calculator shows nominal returns only. Real returns after taxes and inflation may be significantly lower.
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