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Compound Interest Calculator

How much will my money grow with compound interest?

Compound interest earns interest on the interest already added, so money grows faster the longer it stays and the more often interest is added. Enter an amount, a rate and a period to see what it becomes.

₹
% p.a.
years

Amount after the period

₹2,15,892

You put in₹1,00,000
Interest earned₹1,15,892
Compare savings accounts

Indicative only. Your lender’s figures may differ. Nothing you enter here is sent anywhere or stored.

How It's Calculated

A = P × (1 + r ÷ n)^(n × t)

P is the amount, r the yearly rate, n how many times a year interest is added (1, 2, 4 or 12) and t the years. Interest earned is A − P.

Worked Example

If you enter

  • Amount₹1,00,000
  • Interest rate8 % p.a.
  • Period10 years
  • CompoundingYearly

You get

  • Amount after the period₹2,15,892
  • You put in₹1,00,000
  • Interest earned₹1,15,892

These are the calculator's starting values. Change them above to see your own.

Accounts to Compare

Compare interest rates and charges before you open one.

Compare These 3 →See All 5 →
Zero Balance
Kotak 811 Digital Savings Account

Kotak Mahindra Bank

Interest rate
2.50%
Account type
Zero Balance
Minimum balance
Zero
Bank
Kotak Mahindra Bank
Read more
  • Zero-balance digital savings account opened online with Aadhaar or video KYC, paying 2.5% p.a., with a free virtual debit card.
IndusInd Online Savings Account

IndusInd Bank

Interest rate
2.50%
Account type
Regular
Minimum balance
-
Bank
IndusInd Bank
Read more
  • Savings account opened fully online. Interest 2.5% up to Rs 1 lakh, 3% from Rs 1 lakh to Rs 25 lakh, 4% from Rs 25 lakh to Rs 5 crore (from 1 Mar 2026). Zero balance if you choose a premium debit card or fund it as the chosen variant requires; otherwise an average monthly balance of Rs 20,000.
Equitas Regular Savings Account

Equitas Small Finance Bank

Interest rate
2.50%
Account type
Regular
Minimum balance
-
Bank
Equitas Small Finance Bank
Read more
  • Savings account from Equitas Small Finance Bank with high slab rates: 2.5% up to Rs 1 lakh, 7% from Rs 1 lakh to Rs 5 lakh, 6% from Rs 5 lakh to Rs 10 lakh, 6.5% from Rs 10 lakh to Rs 25 crore (from 5 Aug 2026).
DBS digibank Savings Account

DBS Bank India

Interest rate
2.50%
Account type
Regular
Minimum balance
-
Bank
DBS Bank India
Read more
  • Digital savings account from DBS Bank India, opened in the digibank app. Interest 2.5% up to Rs 2 lakh and 5% from Rs 2 lakh to Rs 50 lakh (4% above), from 24 Oct 2025, calculated daily and paid quarterly.

Common Questions

What is the compound interest formula?

A = P × (1 + r ÷ n)^(n × t), where P is the amount, r the yearly rate, n how many times a year interest is added and t the years. Interest earned is A − P.

How is it different from simple interest?

Simple interest is paid on the original amount only. Compound interest is also paid on interest already added, so the gap grows every year.

Does compounding more often help?

A little. At 8% for 10 years, quarterly compounding gives about 2% more than yearly. The rate and the time matter far more.

What is the rule of 72?

Divide 72 by the yearly rate to get roughly how many years money takes to double: at 8%, about 9 years.

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