Finance

CompoundInterestCalculator

Calculate how your investments grow over time with the power of compound interest. Visualize your wealth accumulation journey.

Investment Details

$100,000
10%
10 Years
Monthly Contribution

Compound Growth Effect

Your investment grows 159.4% more with compounding!

Total Amount

$259,374

After 10 years

Total Interest

+$159,374

Earnings from compounding

Growth

159.4%

Total return

Investment Growth Over Time

What is Compound Interest?

Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. Unlike simple interest, which is calculated only on the principal, compound interest allows your money to grow at an accelerating rate over time.

Albert Einstein allegedly called compound interest the “eighth wonder of the world.” Whether or not he actually said it, the concept remains one of the most powerful forces in finance and investing.

Compound vs Simple Interest

The difference between compound and simple interest becomes dramatic over longer time periods. Here's an example with ₹10,000 at 10% annual interest:

Compound Interest
Simple Interest

How Compounding Frequency Affects Returns

The more frequently interest is compounded, the higher your returns. Here's the impact on ₹1,00,000 over 10 years at 10% interest:

Yearly

Base

Quarterly

+0.37%

Monthly

+0.46%

Daily

+0.50%

Even moving from yearly to daily compounding adds ~0.5% to your final amount

The Rule of 72

A quick way to estimate how long it takes to double your money is the Rule of 72: divide 72 by your annual interest rate.

6%12 years

Bank FD

8%9 years

Debt Fund

10%7.2 years

Balanced Fund

12%6 years

Equity Fund

15%4.8 years

Small Cap

20%3.6 years

High Risk

Key Takeaways

Start Early

Time is your biggest asset for compounding

Be Consistent

Regular investments maximize compound effect

Reinvest Returns

Don't withdraw interest - let it compound

Be Patient

Longer periods create exponential growth