---
type: "tool"
title: "Compound Interest Calculator"
description: "Calculate compound interest with monthly, quarterly, half-yearly or annual compounding. See principal versus interest earned."
resource: "https://www.gstcalculators.in/compound-interest-calculator.html"
language: "en"
bundle_generated: "2026-10-12"
---

# Compound Interest Calculator

Calculate compound interest with monthly, quarterly, half-yearly or annual compounding. See principal versus interest earned.

- Canonical page: [Compound Interest Calculator](https://www.gstcalculators.in/compound-interest-calculator.html)
- Publisher: [Tool Master Hub / GSTCalculators.in](../site.md)
- Category: [Basic Financial Calculators](../categories/basic.md)

This is a discovery summary of the public page, not an independently reviewed replacement. Use the canonical page for current inputs, assumptions, formulas, source links and results. The bundle generation date does not mean that tax rules were reviewed on that date.

## Topics on the page



## Questions and answers from the visible page

### What is the compound interest formula?

A = P(1 + r/n)^(nt), where P is principal, r the annual rate, n the compounding frequency per year, and t the years.

### How does compounding frequency change the result?

More frequent compounding produces a higher final amount for the same nominal rate, because interest starts earning interest sooner.

### What is the rule of 72?

Divide 72 by the annual rate for a rough number of years to double your money. At 8%, roughly nine years.

## Accuracy and corrections

[Methodology](https://www.gstcalculators.in/methodology.html) · [Editorial policy](https://www.gstcalculators.in/editorial-policy.html) · [Disclaimer](https://www.gstcalculators.in/disclaimer.html) · [Report a problem](https://www.gstcalculators.in/contact.html).