Compound Interest Calculator India (2026)

Compound interest is interest earned on top of earlier interest. When your earnings stay invested instead of being withdrawn, each rupee starts earning money for you. Over 10, 20, or 30 years, this "snowball effect" can turn modest regular savings into life-changing wealth.

In India, compounding works quietly behind the scenes across government schemes like our PPF calculator, bank savings on our fixed deposit calculator, and girl child funds on our SSY calculator. While fixed instruments compound once a year or quarter, investing in equity mutual funds lets you build wealth at a higher compounded annual rate (CAGR) through a disciplined monthly SIP.

Compounding is the engine behind almost all wealth-creation products in the Indian financial market:

• Mutual Funds: Whether you invest via Lumpsum or SIP, your returns compound annually, significantly boosting long-term wealth.
• Public Provident Fund (PPF): Offers a high degree of safety with annual compounding and EEE tax status.
• Fixed Deposits (FD): Most banks in India offer quarterly compounding on FDs, which results in a higher effective yield than the nominal rate.
• EPF & NPS: These retirement-focused tools rely on decades of compounding to build a substantial pension corpus.

To maximize the "Power of Compounding," you need two things: a high CAGR and time. Here are the top picks:

• Equity Mutual Funds: Historically deliver 12-15% returns over 10+ years. For example, ₹1 lakh invested for 20 years at a 12% return will grow to approximately ₹9.64 Lakhs.
• NPS (National Pension System): Ideal for retirement, allowing your corpus to grow tax-deferred for decades.
• ELSS Funds: Provides the dual benefit of tax saving under Sec 80C and equity-linked compounding.

Track your actual realized returns using our XIRR Calculator for a more accurate picture of your portfolio growth.