Finance
Compound Interest Calculator
Estimate the balance and interest from a principal, annual rate, term, and compounding frequency.
How to use
Enter a principal, annual rate, and term, then choose how often interest is compounded. Enter the term in years or months.
Formula
Final balance = principal × (1 + annual rate ÷ compounding periods)^(compounding periods × years)
Example
What does ₩1,000,000 become after one year at 12% compounded monthly?
The estimated pre-tax balance is about ₩1,126,825, including about ₩126,825 in interest.
Frequently asked questions
- Does more frequent compounding change the result?
- Yes. At the same nominal annual rate, interest added more often earns interest sooner.
- Is this a tax-after estimate?
- No. Taxes, fees, changing rates, and additional deposits are not included.