πŸ’΅
Final Balance
$54,714
πŸ“₯
Total Deposits
$34,000
πŸ“ˆ
Total Interest
$20,714
⚑
Effective Rate
4.87%
πŸ›‘οΈ
Inflation Adjusted
$42,742
πŸ’Ž
After-Tax Balance
$54,714
πŸ’°

Basic Settings

$
Your starting investment amount
%
0-3% Savings3-7% Bonds7-12% Stocks12%+ Growth
yrs
More frequent = higher returns
πŸ’Ž
Final Balance After 10 Years
$54,714
$20,714 earned on $34,000 invested

Balance Breakdown

$54,714
Deposits: $34,000 (62.1%)
Interest: $20,714 (37.9%)
Effective Annual Rate
4.87%
Inflation Adjusted (Real Value)
$42,742
Taxes Paid (0%)
$0
After-Tax Balance
$54,714
Real Return (After Inflation & Tax)
25.71%

Compound Interest Calculator 2026 β€” Complete Guide

Our advanced compound interest calculator models the full power of compounding with multiple frequencies (daily, weekly, monthly, quarterly, annually), recurring deposits, inflation adjustment, and tax calculations. Unlike basic calculators, we show year-by-year projections and real returns after inflation and taxes.

Whether you're saving for retirement, building an emergency fund, or planning major purchases, understanding compound interest is crucial to maximizing your wealth. Use our 2026 calculator with current market rates to see exactly how your money will grow.

Finance Β· Free tool

About the Compound Interest Calculator

See how your money grows with this compound interest calculator: enter a starting amount, regular contributions, an annual rate and the number of years, choose how often interest compounds (daily, monthly, quarterly, yearly) and get the final value, total interest earned and a year-by-year growth chart.

Use it to compare fixed deposits, savings accounts, index funds or a lump-sum vs SIP plan, and to see how compounding frequency, inflation and tax change the real return. The formula behind it is A = P(1 + r/n)ⁿᡗ plus the future value of regular deposits.

How to use the compound interest calculator

  1. 1Enter the initial investment and any monthly or yearly contribution.
  2. 2Set the expected annual interest rate and investment period.
  3. 3Choose the compounding frequency and, optionally, an inflation rate.
  4. 4Read the final amount, interest earned and breakdown chart; save scenarios to compare.

Compound Interest Calculator β€” frequently asked questions

What is the compound interest formula?

A = P Γ— (1 + r/n)^(nΓ—t), where P is principal, r the annual rate as a decimal, n compounding periods per year and t years. Regular contributions are added using the future-value-of-annuity formula.

How much does β‚Ή10,000 a month grow to in 20 years at 12%?

Approximately β‚Ή99.9 lakh: β‚Ή24 lakh invested and about β‚Ή75.9 lakh of compounding gains. Try it above with your own rate and tenure.

Does compounding frequency matter?

Slightly. β‚Ή1 lakh at 8% for 10 years becomes β‚Ή2.16 lakh compounded yearly, β‚Ή2.22 lakh monthly and β‚Ή2.23 lakh daily. Rate and time matter far more than frequency.

What is the Rule of 72?

Divide 72 by the annual rate to estimate the years needed to double your money: at 8% it takes about 9 years, at 12% about 6.

Should I account for inflation?

Yes for long horizons. Enter an inflation rate to see the "real" value of the final amount in today's money.