House Payment Calculator

How to Use the House Payment Calculator

1. Enter Loan Amount – Input the total amount you plan to borrow (e.g., 250000). Use whole dollars or step increments of 1000.
2. Enter Annual Interest Rate – Provide the yearly interest rate as a percentage (e.g., 4.5 for 4.5%). Values must be between 0 and 30.
3. Enter Loan Term – Specify the loan duration in years (e.g., 30). Must be between 1 and 50.
4. Enter Annual Property Tax – Input the yearly property tax amount in dollars (e.g., 2400). Use whole dollars or step increments of 100.
5. Enter Annual Insurance – Input the yearly insurance cost in dollars (e.g., 1200). Use whole dollars or step increments of 100.
6. Click "Calculate" – The button will compute your estimated monthly payment and show a breakdown.

What You Get:

• Estimated Monthly Payment – Total monthly cost including principal, interest, property tax, and insurance.
• Breakdown – Shows separate amounts for Principal & Interest, Property Tax, and Insurance.

Notes:

• All monetary values are in US dollars ($).
• Interest rate must be entered as a percentage (e.g., 4.5, not 0.045).
• If fields are left empty or invalid, the calculator will highlight errors and not compute.
• The formula used is the standard amortization formula: M = P * [r(1+r)^n] / [(1+r)^n - 1].