Compounding Calculator

Estimate future value and interest earned using principal, annual rate, duration, and compounding frequency.

Tax year 2026 - Updated June 2026

Compounding inputs

Principal amount

INR

Annual interest / return

Duration

years

Compounding frequency

Estimated future value

₹16,50,193

₹5,00,000 compounded monthly for 10 years at 12% per year.

Principal

₹5,00,000

Interest earned

₹11,50,193

Effective annual rate

12.68%

Principal: 30%Interest: 70%

Periodic rate

1.0000%

Total periods

120

Growth multiple

3.30x

Formula used

Periodic rate = annual rate / compounding periods per year.
Total periods = compounding periods per year x duration in years.
Future value = principal x (1 + periodic rate) ^ total periods.
For continuous compounding, future value = principal x e ^ (annual rate x years).
Effective annual rate = one-year growth after applying the selected compounding frequency.

Quick answers

Compounding Calculator FAQs

What is compound interest?

Compound interest means interest is added to the principal, and future interest is calculated on the increased amount.

How does compounding frequency affect returns?

More frequent compounding can slightly increase future value because interest is added back more often, assuming the same annual rate.

What is the difference between simple interest and compound interest?

Simple interest is calculated only on the original principal. Compound interest calculates interest on principal plus accumulated interest.

Does daily compounding always give the highest amount?

Daily compounding usually gives a slightly higher estimate than annual compounding for the same rate and duration, but actual products may use their own rules.

Does the Compounding Calculator include tax?

No. It estimates before-tax future value and interest. Taxes, fees, inflation, and changing rates are not included.

Keep planning

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Guide

Compounding Calculator Guide

Understand compounding frequency, periodic rate, and future value.

Assumptions

Assumes the principal is invested at the start of the period.
Assumes a fixed annual rate for the full duration.
Supports annual, half-yearly, quarterly, monthly, daily, and continuous compounding.
Does not include taxes, fees, inflation, or changing rates.
This is an educational estimate and not financial advice.

Disclaimer

The information and calculations provided on this website are for general informational and educational purposes only. Results are estimates based on publicly available tax rules and assumptions and may not reflect your actual tax liability or take-home pay. This content does not constitute tax, legal, accounting, or financial advice. Tax laws and regulations change frequently and vary based on individual circumstances. Consult a qualified tax professional, accountant, or financial advisor before making any financial decisions.

This website is not affiliated with the IRS, HMRC, Income Tax Department of India, or any government agency.

Formula used

Periodic rate = annual rate / compounding periods per year.

Total periods = compounding periods per year x duration in years.

Future value = principal x (1 + periodic rate) ^ total periods.

For continuous compounding, future value = principal x e ^ (annual rate x years).

Effective annual rate = one-year growth after applying the selected compounding frequency.

Assumptions

Assumes the principal is invested at the start of the period.

Assumes a fixed annual rate for the full duration.

Supports annual, half-yearly, quarterly, monthly, daily, and continuous compounding.

Does not include taxes, fees, inflation, or changing rates.

This is an educational estimate and not financial advice.

Disclaimer

This website is not affiliated with the IRS, HMRC, Income Tax Department of India, or any government agency.