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Module · Investment · Growth Curve
Compound Interest
Model compound interest with any compounding frequency and optional yearly contributions. Watch your money snowball on the year-by-year growth chart.
Your investment
Final balance
₹ 2,21,964
after 10 years
Principal
₹ 1,00,000
Contributions
₹ 0
Interest earned
₹ 1,21,964
- Balance
- Principal + Contrib
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Guide
How Compound Interest works
Step 01
Enter principal
Starting amount, annual interest rate and duration in years.
Step 02
Pick frequency
Compound daily, monthly, quarterly, semi-annually or annually.
Step 03
Optional contributions
Add a fixed amount per year — the chart shows principal + contributions vs. balance.
FAQ
Frequently asked
What is the compound interest formula?+
A = P × (1 + r/n)^(n×t) where P = principal, r = annual rate, n = compounding frequency per year, t = years.
Does more frequent compounding matter?+
Yes — daily compounding gives slightly higher returns than annual, but the difference is small at typical rates.
Can I use this for CD or fixed deposits?+
Yes — enter the CD/FD principal, interest rate, tenure and compounding frequency.