What is the difference between simple interest and compound interest?

Simple interest is calculated solely on the original principal. Compound interest is calculated on the principal plus all accumulated interest from previous periods.

Does higher compounding frequency increase returns?

Yes. Compounding monthly or daily yields slightly higher effective returns than annual compounding because interest is credited more frequently.

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Compound Interest Calculator

Calculate compounding interest growth, future maturity wealth, and interest earnings with monthly deposits.

Compound Interest Calculator Interactive Workspace

Client-side calculations and instant parameter controls are initializing. All processing occurs securely in your browser.

How to Use the Compound Interest Calculator

1 Enter your starting initial principal amount.
2 Input the expected annual interest rate percentage.
3 Set your investment time horizon in years.
4 Select compounding frequency (Annually, Semi-Annually, Quarterly, Monthly, Daily).
5 Optionally add regular monthly additional deposits to see accelerated compounding.

Mathematical Formula & Principle

A = P × (1 + r/n)^(n×t) + PMT × [((1 + r/n)^(n×t) − 1) / (r/n)]

Calculations are performed with IEEE floating point mathematical precision directly in your device memory.

Worked Examples

5-Year Lump Sum Investment

Input: ₹10,000 at 8% p.a. compounded annually for 5 years

Result: Maturity Wealth: ₹14,693 | Interest Earned: ₹4,693 (+46.9%)

Interest earned each year compounds to generate subsequent interest.

Monthly Compounding with Additions

Input: ₹50,000 initial + ₹2,000/month at 10% for 10 years

Result: Maturity Wealth: ₹5,41,407 | Total Invested: ₹2,90,000

Combines initial principal compounding with periodic recurring contributions.

Frequently Asked Questions

What is the difference between simple interest and compound interest?: Simple interest is calculated solely on the original principal. Compound interest is calculated on the principal plus all accumulated interest from previous periods.
Does higher compounding frequency increase returns?: Yes. Compounding monthly or daily yields slightly higher effective returns than annual compounding because interest is credited more frequently.

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