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Bret Whissel Amortization Calculator

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The Bret Whissel Amortization Calculator is a powerful financial tool designed to simplify the process of calculating monthly payments for fixed-rate loans. Whether you're planning to take out a mortgage, car loan, or any other type of loan, understanding your monthly payment is crucial. This calculator makes it easy by using a straightforward formula to provide clear, accurate results.

Understanding the Calculator's Functionality

At the heart of the Bret Whissel Amortization Calculator is a simple yet effective formula:

M = P * (r * (1 + r)^n) / ((1 + r)^n - 1)

  • M represents the total monthly payment.
  • P is the principal loan amount.
  • r is the monthly interest rate, which is the annual interest rate divided by 12.
  • n is the number of payments, calculated as the loan term in years multiplied by 12.

Inputs needed:

  • Principal amount (P)
  • Annual interest rate (as a percentage)
  • Loan term in years

To determine the monthly interest rate (r) and the number of payments (n), use the formulas:

r = (annual interest rate / 100) / 12 n = loan term in years * 12

Step-by-Step Example

Let's walk through an example to see how the calculator works in practice.

Suppose you're considering a $200,000 loan with a 5% annual interest rate over 30 years. Using our formula, we can calculate the monthly payment as follows:

  1. Convert the annual interest rate to a monthly rate: 55.
  2. Calculate the number of monthly payments: 30∗12=36030years∗12=360.
  3. Plug these values into the formula to get the monthly payment, which would be approximately $1,073.64.

This calculation shows that for a $200,000 loan at a 5% interest rate over 30 years, your monthly payment would be around $1,073.64.

Relevant Information Table

Here's a table with some example calculations to give you a better understanding of how different factors affect your monthly payment:

Principal ($)Interest Rate (%)Term (Years)Monthly Payment ($)


The Bret Whissel Amortization Calculator is an invaluable resource for anyone looking to finance a purchase or manage existing loans. By providing a clear understanding of your monthly payment obligations, it helps you make informed financial decisions. This calculator not only simplifies complex calculations but also enables you to plan your finances better, ensuring that you choose terms that fit your budget and financial goals. Whether you're a first-time homebuyer, a car shopper, or simply managing your finances, the Bret Whissel Amortization Calculator is a tool that can help you navigate the complexities of loans with confidence.

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