Mortgage Calculator

Before you fall in love with a listing, you need to know what it actually costs to own it. The sticker price is only the starting point. Once you add interest, property taxes, homeowners insurance, and possibly HOA dues, the monthly number can be hundreds of dollars higher than the loan payment alone. This calculator turns those moving parts into one clear payment estimate, so you can shop with a budget in mind instead of a guess.

What This Mortgage Calculator Does

The calculator uses a standard amortization formula to compute your principal-and-interest payment, then layers in the extras that come with most homes. You can adjust the home price, down payment, interest rate, loan term, taxes, insurance, and HOA fees in real time. It returns your total monthly payment, the loan amount, and the total interest you would pay over the life of the loan, making it easy to compare a 30-year mortgage against a 15-year option or a larger down payment against a smaller one.

How to Use This Calculator

1. Enter the home price you are considering, not the final offer.
2. Add your down payment. The calculator shows what percent of the price it covers.
3. Input the annual interest rate and pick a loan term—15, 20, or 30 years.
4. Add the yearly property tax and homeowners insurance estimates for your area.
5. Include monthly HOA fees if the property has them, then review the full payment breakdown.

Common Use Cases

• First-time buyers deciding what price range fits their monthly budget.
• Homeowners weighing a 15-year versus a 30-year loan by comparing total interest.
• Buyers testing how a bigger down payment lowers the principal-and-interest portion.
• Refinancers checking whether a lower rate or shorter term actually saves money.
• Budgeters separating escrow costs from the core loan payment.

Worked Example

Say you are buying a $450,000 home and putting 20% down, or $90,000. You finance the remaining $360,000 at a 6.75% fixed rate for 30 years. The principal-and-interest portion is about $2,335 per month. Add $450 for property taxes, $100 for insurance, and $150 in HOA dues, and your total monthly payment lands near $3,035. Over the full 30 years, you would pay roughly $480,600 in interest, which is why even a quarter-point rate difference is worth shopping around for.

Tips for Using the Results

• If your down payment is below 20%, budget for private mortgage insurance (PMI) on top of the result.
• Run both 15-year and 30-year terms: the shorter one raises the monthly payment but often cuts total interest by tens of thousands.
• Treat the output as a planning estimate, not a lender quote, since closing costs, fees, and escrow adjustments can shift the final figure.