Financial Tools

Loan Interest Calculator

Calculate monthly payments and total interest before you borrow.

KRW
%
yr

Pay the same total (principal + interest) each month.

Est. Monthly Payment

0 KRW
Total Interest0 KRW
Total Payment0 KRW

💡 Repayment Tips

Generally, Equal Principal costs the least in total interest. Equal P+I offers predictable payments and easier budgeting.

About the Loan Calculator

Calculate your monthly payment and total interest for Equal P+I, Equal Principal, and Bullet repayment methods.

Repayment Methods

  • Equal P+I: Same payment every month. Easy to budget, but interest-heavy early on.
  • Equal Principal: Same principal every month; interest declines. Lowest total interest.
  • Bullet: Interest only, then full principal at maturity. Low monthly cost, large lump-sum at end.

How to Use

  1. 1.Enter the loan amount (e.g., ₩100M).
  2. 2.Enter the annual interest rate (e.g., 4.5%).
  3. 3.Enter the loan period (e.g., 30 years).
  4. 4.Choose a repayment method.
  5. 5.View monthly payment, total interest, and total payment.

Important Notes

  • This calculator is for reference only. Actual loans may include additional fees or insurance.
  • Rates may change; verify the current rate at the time of borrowing.
  • Plan repayments based on your income and expenses before borrowing.
  • Compare multiple lenders to find the best terms.