How to Calculate a Loan Payment (Made Simple!)

💳 A step-by-step guide to understanding what you’ll owe each month

Thinking about getting a loan — for a car, a house, or even a personal purchase? One of the first things you probably want to know is:
How much will my monthly payment be?

The good news is that once you know a few key numbers, calculating your loan payment is actually pretty easy.

🙋 What Is a Loan Payment?

A loan payment is the amount of money you pay each month to repay the loan. It typically includes:

  • Principal – the original amount you borrowed
  • Interest – the cost of borrowing the money

Some loans may also include fees, taxes, or insurance, but we’ll keep it simple here and focus on principal and interest.

⚙️ Loan Payment Calculator

Enter the Principal, Interest rate (%) and the total repayment term in years. The tool will calculate your monthly payments.

🧮 The Monthly Loan Payment Formula

Here’s the basic formula lenders use to calculate your monthly loan payment:

M = [P × r × (1 + r)^n] / [(1 + r)^n – 1]

Where:
M = your monthly payment
P = loan amount (the principal)
r = monthly interest rate (annual rate ÷ 12)
n = total number of monthly payments

Don’t worry — you don’t have to solve this by hand. You can use the calculator or plug it into Excel. But let’s walk through an example anyway.

🔍 Example: $10,000 Loan at 6% Interest

Let’s say you borrow $10,000
Your interest rate is 6% annually
You’re repaying it over 5 years

Here’s what that looks like in the formula:

  • P = 10,000
  • r = 6% ÷ 12 = 0.005
  • n = 5 years × 12 months = 60

Now plug those in:

M = [10,000 × 0.005 × (1 + 0.005)^60] ÷ [(1 + 0.005)^60 – 1]

Your monthly payment comes out to about $193.33

That’s the amount you’d pay each month to fully repay the loan over 5 years.

📌 Quick Tips

  • Use the loan calculator to skip the math
  • Know whether your interest rate is fixed (stays the same) or variable (can change)
  • The longer your loan term, the lower your monthly payment — but you’ll pay more in total interest

💵 Why It’s Useful to Know

Understanding how to calculate a loan payment helps you:

  • Compare different loan offers
  • Plan your monthly budget
  • Avoid borrowing more than you can afford
  • Be a more confident borrower

💡 Final Thoughts

Knowing how to calculate a loan payment is a powerful money skill. You’ll be able to spot good deals, avoid costly mistakes, and borrow smartly — whether it’s for a car, a home, or a personal project.