Buying a home is the largest financial decision most people will ever make. Our mortgage calculator helps you understand exactly what your monthly obligation will be — not just the principal and interest, but also property taxes (automatically estimated based on your state), homeowners insurance, and optional PMI. Enter your numbers below and get a complete payment breakdown in seconds.

Calculate Your Mortgage Payment

Monthly Payment
Principal & Interest
Monthly Tax
Monthly Insurance
Loan Amount
Total Interest

⚠️ Property tax is estimated using your state's average effective rate. Actual rates vary by county and city. Insurance estimate is based on your input. These are estimates — contact a lender for an official quote.

How to Use This Mortgage Calculator

  1. Enter the home price — the total purchase price of the property you're considering.
  2. Enter your down payment — typically 3–20% of the purchase price. A down payment under 20% usually requires PMI.
  3. Enter the interest rate — use the rate you've been quoted, or check current average rates. As of mid-2026, 30-year fixed rates are around 6.5–7%.
  4. Select your loan term — 30-year loans have lower monthly payments; 15-year loans save dramatically on total interest.
  5. Choose your state — we auto-estimate property tax using your state's average effective rate.
  6. Enter your insurance estimate — a typical homeowners insurance policy runs $1,200–$2,500/year depending on location and coverage.

Understanding Your Mortgage Payment

A mortgage payment is made up of several components, often referred to as PITI: Principal, Interest, Taxes, and Insurance.

Principal is the portion of your payment that reduces your actual loan balance. In the early years of a mortgage, a very small portion of each payment goes toward principal — this is called amortization. Over time, the split gradually shifts as you owe less and less.

Interest is the cost of borrowing. It's calculated monthly on your remaining balance. On a $320,000 loan at 6.5%, your very first payment includes roughly $1,733 in interest alone.

Property taxes are levied by your local government based on your home's assessed value. They're collected monthly through escrow by your lender and paid on your behalf annually. They vary enormously by state — from 0.28% in Hawaii to over 2.4% in New Jersey.

Homeowners insurance protects your property against damage, theft, and liability. Lenders require it. Monthly escrow typically covers this alongside property taxes.

💡 Tip: Even a small extra monthly payment — say $100/month on a 30-year loan — can shave years off your payoff date and save tens of thousands in interest. Use our Loan Calculator to model extra payment scenarios.

Worked Example

Let's say you're buying a home in California for $450,000, putting $90,000 (20%) down, with a 6.5% interest rate on a 30-year fixed mortgage.

That total interest figure often surprises people — you end up paying more in interest than your original loan amount over 30 years. Refinancing to a 15-year term or making extra payments are two effective strategies to reduce it.

15-Year vs. 30-Year Mortgage: Which Is Better?

This is one of the most common questions homebuyers have. The answer depends on your financial situation and priorities.

A 30-year mortgage gives you a lower monthly payment, freeing up cash flow for other goals — investing, emergencies, or childcare. The tradeoff is significantly more interest paid over the life of the loan.

A 15-year mortgage typically comes with a lower interest rate (often 0.5–0.75% lower) and cuts your total interest cost dramatically. On a $360,000 loan, switching from 30 to 15 years can save over $200,000 in interest — but your monthly payment will be roughly 40% higher.

A practical middle ground: take the 30-year mortgage but make extra principal payments when cash flow allows. This gives you flexibility while accelerating payoff.

What Is Private Mortgage Insurance (PMI)?

If your down payment is less than 20% of the purchase price, most conventional lenders will require you to pay PMI. This insurance protects the lender (not you) if you default on the loan. PMI typically costs 0.5–1.5% of the loan amount annually, added to your monthly payment.

The good news: once your loan balance drops to 80% of the original appraised value, you can request PMI cancellation. It's automatically removed at 78% under the Homeowners Protection Act.

Frequently Asked Questions

How accurate is this mortgage calculator?
Our calculator uses the standard amortization formula and real state average property tax rates. It's highly accurate for P&I calculations. Property tax and insurance are estimates — your actual costs will depend on your specific county, city, and insurance provider. Always verify with your lender before making financial decisions.
What credit score do I need for a mortgage?
For a conventional loan, most lenders want a minimum score of 620, though 740+ will get you the best rates. FHA loans are available with scores as low as 580 (with 3.5% down) or even 500 (with 10% down). VA and USDA loans have no official minimum, but lenders typically look for 620+.
What is a good debt-to-income ratio for a mortgage?
Most lenders want your total monthly debt payments (including your new mortgage) to be no more than 43% of your gross monthly income. The ideal ratio is below 36%. To calculate yours, add up all monthly debt payments (car loan, student loans, credit cards, and proposed mortgage), then divide by your monthly gross income.
Can I afford a $400,000 house?
Using the 28% rule, your monthly mortgage payment shouldn't exceed 28% of your gross monthly income. A $400,000 home with 10% down at 6.5% for 30 years would have a monthly P&I of about $2,275. Adding taxes and insurance, you're looking at ~$2,700–$3,000/month. To stay within 28%, you'd need a gross income of roughly $10,700/month ($128,400/year).
What's the difference between pre-qualification and pre-approval?
Pre-qualification is a quick estimate based on self-reported information — no credit check. Pre-approval involves verifying your income, assets, and credit. Pre-approval carries more weight with sellers and gives you a firm loan amount. Always get pre-approved before making serious offers on homes.