See how your money grows exponentially with compound interest. Compare monthly, quarterly & yearly compounding. Live chart + AI insights included.
📊 Enter Investment Details
₹1L
10%
10 yrs
📐 CI Formula
A = P × (1 + r/n)^(n×t)
A
Final amount
P
Principal (initial)
r
Annual rate (decimal)
n
Compoundings/year
t
Time (years)
CI
A − P
Principal
₹0
Interest Earned
₹0
Total Amount
₹0
📊 Principal vs Interest Breakdown
Principal —Interest —
📈 Year-wise Growth
Principal Total Value
⚡ Compound vs Simple Interest
Simple Interest Amount
Compound Interest Amount
Extra earned with CI
🔄 Compounding Frequency Comparison
Same ₹1,00,000 at 10% for 10 years — see how frequency affects your returns:
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AI Insights — Power of Compounding
Smart money facts that will change how you think about investing
⏰
Time is More Powerful Than Rate
₹1 Lakh at 10% for 30 years = ₹17.4 Lakhs. The same money at 15% for 20 years = ₹16.4 Lakhs. Starting 10 years earlier beats a 5% higher rate! This is why "start early" is the most important financial advice.
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Rule of 72 — Double Your Money
Divide 72 by your interest rate to know how many years to double your money. At 10% → 72÷10 = 7.2 years to double. At 12% → 6 years. At 6% FD → 12 years. Use this to compare any investment instantly.
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Monthly Compounding Beats Yearly
₹1 Lakh at 10% for 10 years: Yearly compounding = ₹2,59,374. Monthly compounding = ₹2,70,704. The difference is ₹11,330 — just from how often it compounds! This is why monthly SIPs and FDs with quarterly compounding are better.
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Best Compound Interest Investments in India (2026)
Credit card debt compounds at 36–42% per year monthly. A ₹50,000 credit card debt unpaid for 2 years becomes ₹1,00,000+. The same compounding that builds wealth in investments destroys it in debt. Always pay credit card bills in full.
❓ Compound Interest FAQs
What is compound interest in simple words?▼
Compound interest means you earn interest not just on your original money (principal), but also on the interest you've already earned. Example: ₹1,000 at 10% for 2 years. Year 1: interest = ₹100, total = ₹1,100. Year 2: interest = 10% of ₹1,100 = ₹110 (not ₹100). So you earn ₹10 more in year 2 — that's the compounding effect. Over decades, this "interest on interest" creates massive wealth.
Compound interest formula with example India▼
Formula: A = P × (1 + r/n)^(n×t). Example: ₹2,00,000 invested at 8% for 5 years with quarterly compounding (n=4). A = 2,00,000 × (1 + 0.08/4)^(4×5) = 2,00,000 × (1.02)^20 = 2,00,000 × 1.4859 = ₹2,97,189. So interest earned = ₹97,189. Use our calculator above to try any combination instantly!
Which bank FD gives highest compound interest in India 2026?▼
As of March 2026, top FD rates: Small Finance Banks like Unity SFB offer 9.5% (highest), Jana SFB 9%, ESAF SFB 8.75%. Among major banks: HDFC Bank 7.40% (2yr), ICICI Bank 7.40%, Axis Bank 7.55%, SBI 7.10% (senior citizens get 0.5% extra). All FDs in India compound quarterly. Use our FD Calculator for exact maturity amount.
Is SIP compound interest or simple interest?▼
SIP (Systematic Investment Plan) in mutual funds benefits from compounding — your returns are reinvested and generate further returns. However, since markets fluctuate, it's not a fixed compound interest rate like FD. The effective return is measured using XIRR. Equity mutual funds have delivered 12–15% CAGR over 10+ year periods historically, which is far superior to FD compound interest after tax.
How does compound interest differ from simple interest?▼
Simple Interest (SI) = P × R × T / 100. It's always calculated on the original principal only. Compound Interest (CI) calculates interest on principal + accumulated interest. Over short periods (1-2 years), the difference is small. Over long periods (10-20 years), the difference is enormous. ₹1 Lakh at 10% for 20 years: SI = ₹3 Lakhs, CI = ₹6.72 Lakhs. CI is 2.24× more than SI over 20 years!