Compound Interest Calculator

Calculate returns for SIP & lumpsum investments

Investment Type

Investment Details

₹1.00 L
₹10K₹1Cr
10%
1%30%
10 Years
1 Year40 Years

Higher frequency = Higher returns. Effective rate: 10.00%

6%
2%15%
Future Value
₹2.59 L
Total Investment₹1.00 L
Wealth Gained₹1.59 L
Inflation Adjusted₹1.45 L

Investment Breakdown

39%
61%
Invested Amount
₹1.00 L
Returns Earned
₹1.59 L

Year-wise Growth

Year 1
Invested:₹1.00 L
Returns:₹10,000
Total Value:₹1.10 L
Year 2
Invested:₹1.00 L
Returns:₹21,000
Total Value:₹1.21 L
Year 3
Invested:₹1.00 L
Returns:₹33,100
Total Value:₹1.33 L
Year 4
Invested:₹1.00 L
Returns:₹46,410
Total Value:₹1.46 L
Year 5
Invested:₹1.00 L
Returns:₹61,051
Total Value:₹1.61 L
Year 6
Invested:₹1.00 L
Returns:₹77,156
Total Value:₹1.77 L
Year 7
Invested:₹1.00 L
Returns:₹94,872
Total Value:₹1.95 L
Year 8
Invested:₹1.00 L
Returns:₹1.14 L
Total Value:₹2.14 L
Year 9
Invested:₹1.00 L
Returns:₹1.36 L
Total Value:₹2.36 L
Year 10
Invested:₹1.00 L
Returns:₹1.59 L
Total Value:₹2.59 L

Power of Compounding

The Power of Compounding is one of the most powerful concepts in investing. When you earn returns on your investment and then earn returns on those returns, your wealth grows exponentially over time.

Our calculator helps you understand how your money grows with different compounding frequencies (daily, monthly, quarterly, yearly) and shows the impact of inflation on your real returns. Use it to plan your financial goals effectively.

How to Use

  1. 1Choose investment type: Lumpsum or SIP/Monthly
  2. 2Enter principal or monthly investment amount
  3. 3Set expected return rate (1-30%) and time period
  4. 4Select compounding frequency for accurate results
  5. 5Enable inflation adjustment to see real returns

Compound Interest Formulas

Lumpsum Investment

A = P(1 + r/n)^(nt)

A = Final amount

P = Principal amount

r = Annual interest rate

n = Compounding frequency

t = Time in years

Example: ₹1 lakh at 12% for 10 years with yearly compounding = ₹3.11 lakh

SIP/Monthly Investment

FV = PMT × [((1+r)^n - 1)/r] × (1+r)

FV = Future value

PMT = Monthly payment

r = Monthly interest rate

n = Total months

Example: ₹5,000/month for 10 years at 12% = ₹11.6 lakh (invested ₹6L)

Compounding Frequency Impact

Returns on ₹1,00,000 invested at 12% for 10 years with different compounding frequencies:

Compounding FrequencyTimes per YearFinal AmountTotal Interest
Daily365₹3,32,011₹2,32,011
Monthly12₹3,30,039₹2,30,039
Quarterly4₹3,26,204₹2,26,204
Half-Yearly2₹3,20,714₹2,20,714
Yearly1₹3,10,585₹2,10,585

Key Insight: Daily compounding gives ₹21,426 more than yearly compounding on the same investment!

Best Compound Interest Investment Options in India

Public Provident Fund (PPF)

Returns: 7.1% (tax-free) | Tenure: 15 years

Safe government scheme with EEE tax benefits. Yearly compounding. Lock-in period 15 years.

Equity Mutual Funds

Returns: 10-15% (long-term) | Risk: High

Best for wealth creation. Daily NAV compounding. Invest via SIP for rupee cost averaging.

National Pension System (NPS)

Returns: 10-12% | Tax benefit: ₹2L

Retirement-focused. Daily compounding. Tax deduction under 80CCD(1B).

Fixed Deposits (FD)

Returns: 6-8% | Risk: Very Low

Safe option. Quarterly compounding typically. Best for short-term goals.

Sukanya Samriddhi Yojana

Returns: 8.2% (tax-free) | For girl child

Government scheme. Yearly compounding. Maturity at 21 years.

Debt Mutual Funds

Returns: 7-9% | Risk: Low-Medium

Better than FD for 3+ years. Daily NAV. Indexation benefit for tax.

Simple Interest vs Compound Interest

FeatureSimple InterestCompound Interest
CalculationOn principal onlyOn principal + interest
GrowthLinearExponential
₹1L at 10% for 10 years₹2,00,000₹2,59,374
₹1L at 10% for 20 years₹3,00,000₹6,72,750
Best ForShort-term loansLong-term investments

Frequently Asked Questions

What is compound interest and how does it work?

Compound interest is interest calculated on both the principal amount and the accumulated interest from previous periods. Unlike simple interest (calculated only on principal), compound interest grows exponentially. For example, ₹1 lakh at 10% for 10 years becomes ₹2.59 lakh with compound interest vs ₹2 lakh with simple interest. This exponential growth is called the "power of compounding".

What is the compound interest formula?

For lumpsum: A = P(1 + r/n)^(nt), where A = final amount, P = principal, r = annual rate, n = compounding frequency, t = time in years. For SIP: FV = PMT × [((1 + r)^n - 1) / r] × (1 + r), where PMT = monthly payment, r = monthly rate, n = total months. Daily compounding gives highest returns, followed by monthly, quarterly, and yearly.

How does compounding frequency affect returns?

Higher compounding frequency means higher returns. On ₹1 lakh at 12% for 10 years: Daily compounding = ₹3.32L, Monthly = ₹3.30L, Quarterly = ₹3.26L, Yearly = ₹3.11L. The difference increases with higher amounts, rates, and time periods. Most mutual funds use daily compounding, while FDs typically use quarterly compounding.

Should I choose SIP or lumpsum investment?

SIP (Systematic Investment Plan) is better for regular income earners, reduces market timing risk through rupee cost averaging, and builds investment discipline. Lumpsum is better when you have a large amount available, during market corrections, or for short-term goals. For long-term goals (10+ years), SIP often performs better due to consistent investing and lower average cost.

How do I calculate inflation-adjusted returns?

Real returns = [(1 + nominal return) / (1 + inflation rate)] - 1. For example, 12% return with 6% inflation gives real return of 5.66%. Our calculator shows inflation-adjusted value: Future Value / (1 + inflation)^years. This tells you the actual purchasing power of your investment. Always consider inflation when planning long-term investments.

What are the best investment options for compound interest in India?

Top options: Equity Mutual Funds (10-15% returns), Public Provident Fund (7.1%, tax-free), National Savings Certificate (7.7%), Fixed Deposits (6-8%), Sukanya Samriddhi Yojana (8.2% for girl child), NPS (10-12% long-term). Equity markets offer highest compounding potential but with higher risk. Mix different options based on your risk appetite and goals.