What is the formula to calculate monthly interest?

Calculating Monthly Interest: A Simple Guide

When making loan payments, it’s crucial to understand how to calculate the interest portion. This amount represents the cost of borrowing the money and is a significant component of your monthly payment. The formula for calculating monthly interest is straightforward and involves two steps:

Step 1: Divide Annual Interest Rate by 12

The annual interest rate refers to the percentage of interest charged on the loan over a one-year period. To determine the monthly interest rate, divide the annual rate by 12. This conversion converts the annual rate into a monthly rate, reflecting the fact that you are making payments over a 12-month period.

Step 2: Multiply Monthly Interest Rate by Outstanding Loan Balance

Once you have the monthly interest rate, you need to multiply it by the outstanding loan balance. This balance represents the amount of money you still owe on the loan. The result of this multiplication is the interest portion of your monthly payment.

Example:

Suppose you have a loan with an annual interest rate of 6% and an outstanding balance of $10,000.

• Monthly interest rate = 6% / 12 = 0.5%
• Interest portion = 0.5% * $10,000 = $50

Therefore, the interest portion of your monthly payment would be $50. It’s important to note that this calculation does not include any principal payments, which are used to reduce the loan balance over time.

By understanding the formula for calculating monthly interest, you can ensure that you are accurately tracking your loan payments and budgeting accordingly. It’s also a good idea to consult with a financial advisor or lender if you have any further questions or need assistance with your loan.