Key Features

• Perfect Support for 3 Major Loan Repayment Methods: It accurately applies and calculates the formulas for equal payment of principal and interest, equal payment of principal, and lump-sum repayment at maturity, which are mainly used in the financial sector.
• Interest Grace Period Reflection: You can freely set a deferment period where you pay only interest without principal repayment after the initial loan execution to understand the change in monthly cash flow.
• Repayment Structure Visualization and Copying: It shows the relative proportion of principal and interest paid each month as the repayment progresses through a linear graph, and provides compatible data that can be immediately pasted into Excel when the copy button is clicked.

How to Use

1. What is the difference between equal principal and interest and equal principal?: With equal principal and interest repayment, the total amount (principal + interest) paid every month until maturity is the same, making it easy to plan expenses. On the other hand, equal principal repayment pays the same amount of principal every month, so the interest burden and total payment amount gradually decrease over time. The total interest is **lowest with equal principal**.
2. When is bullet repayment at maturity advantageous?: Bullet repayment at maturity is a method where you only pay the interest incurred each month during the loan period, and repay 100% of the principal in a lump sum on the maturity date. It is advantageous when you want to minimize fixed monthly expenses during the loan period, but **unless early repayment occurs, the total interest paid is the largest among the three methods**.
3. Does the interest increase if I set a grace period?: Yes, it increases. The longer the grace period (period paying only interest), the more the timing of repaying the loan principal is delayed, so even under the same interest rate conditions, the total interest amount paid to the bank until final maturity swells significantly.