1. What is the Mortgage Payment Formula?

The mortgage payment formula calculates the fixed monthly payment required to fully amortize a loan over its term. It accounts for the principal amount, interest rate, and loan duration.

2. How Does the Calculator Work?

The calculator uses the standard mortgage payment formula:

Where:

• \( P \) — Principal loan amount ($)
• \( r \) — Monthly interest rate (annual rate ÷ 12)
• \( n \) — Total number of payments (loan term in years × 12)

Explanation: The formula calculates the fixed payment that pays off the loan with interest over the specified term.

3. Importance of Mortgage Calculation

Details: Understanding your monthly payment helps with budgeting and comparing different loan options. It's essential for financial planning when purchasing property.

4. Using the Calculator

Tips: Enter the principal amount in dollars, annual interest rate as a percentage (e.g., 3.5 for 3.5%), and loan term in years. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Does this include property taxes and insurance?
A: No, this calculates only principal and interest. A complete mortgage payment may include taxes, insurance, and PMI.

Q2: How does a larger down payment affect the payment?
A: A larger down payment reduces the principal amount, resulting in a lower monthly payment.

Q3: What's the difference between 15-year and 30-year mortgages?
A: 15-year loans have higher monthly payments but much less total interest. 30-year loans have lower payments but more total interest.

Q4: How does interest rate affect the payment?
A: Higher rates increase monthly payments significantly. Even a 0.5% difference can have a substantial impact over the loan term.

Q5: Can I calculate payments for adjustable-rate mortgages?
A: This calculator is for fixed-rate mortgages only. ARM payments change when the rate adjusts.