How to calculate monthly loan payment

Introduction:
When taking out a loan, such as a mortgage or personal loan, you’ll need to know how much you’ll be paying each month. Understanding how to calculate your monthly loan payment will help you manage your budget and ensure that you’re able to make on-time payments. In this article, we will walk you through the steps to calculate your monthly loan payment using the standard formula.
The Standard Formula:
To calculate a monthly loan payment, you can use the following formula:
M = P * (r(1+r)^n) / ((1+r)^n – 1)
Where:
M = monthly payment
P = principal (loan amount)
r = monthly interest rate (annual interest rate divided by 12)
n = total number of payments (loan term in months)
Step-by-Step Calculation:
1. Determine Principal:
Your first step is to find out the principal amount of your loan, which is the amount you initially borrowed.
2. Convert Annual Interest Rate to Monthly Interest Rate:
To convert your annual interest rate to a monthly interest rate, divide it by 12 (since there are 12 months in a year). For example, if your annual interest rate is 6%, your monthly interest rate would be 0.5% (6% ÷ 12).
3. Convert Monthly Interest Rate to Decimal Form:
Next, convert the percentage value of the monthly interest rate into decimal form by dividing it by 100. For example, 0.5% should be converted by dividing by 100, becoming 0.005.
4. Determine Total Number of Payments:
Multiply the term of your loan (in years) by 12 to find out how many total payments you’ll be making over its lifetime. For example, if your loan has a term of five years, then you’ll make a total of 60 payments (5 years multiplied by 12).
5. Calculate Monthly Loan Payment:
Now that you have all the variables, use the formula to calculate your monthly loan payment:
M = P * (r(1+r)^n) / ((1+r)^n – 1)
Example:
Assume you take out a loan of $10,000 with an annual interest rate of 6% for five years.
Principal (P) = $10,000
Monthly Interest Rate (r) = 0.005 (6% ÷ 12 ÷ 100)
Total Payments (n) = 60 (5 years × 12)
M = $10,000 * (0.005(1+0.005)^60) / ((1+0.005)^60 – 1)
M ≈ $193.33
Thus, your monthly loan payment will be approximately $193.33.
Conclusion:
Calculating your monthly loan payment is an essential skill to manage your finances effectively. By understanding how to use the standard formula for loan calculations and applying it to your specific loan details, you can easily determine your monthly commitments and plan your budget accordingly.