How to Use the Mortgage Calculator
Our mortgage calculator helps you estimate your monthly home loan payment quickly and accurately. Simply enter your home price, down payment amount, interest rate, and loan term — and we'll calculate your principal and interest payment in seconds. You can also add property taxes, homeowners insurance, HOA fees, and PMI for a complete picture of your true monthly housing cost.
This tool also generates a full amortization schedule showing you exactly how much of each payment goes toward principal versus interest every month over the life of your loan — crucial information for understanding your equity build-up.
Understanding Your Mortgage Payment Components
Principal & Interest (P&I)
This is the core of your mortgage payment. Principal is the actual loan amount you're paying down, while interest is the lender's fee for providing the loan. In early years, most of your payment goes to interest. Over time, more goes toward principal — this is how amortization works.
Property Taxes
Property taxes vary significantly by state and county. The national average is roughly 1.1% of home value annually, but rates range from 0.3% in Hawaii to over 2.4% in New Jersey. Most lenders collect these monthly into an escrow account and pay your tax bill on your behalf.
Homeowners Insurance
Lenders require homeowners insurance on any mortgaged property. The average American homeowner pays about $1,400–$2,000 per year, depending on location, home age, and coverage level. High-risk areas like Florida or Texas can cost significantly more.
Private Mortgage Insurance (PMI)
If you put down less than 20%, your lender will require PMI. This protects the lender — not you — if you default on the loan. PMI typically costs 0.5% to 1.5% of your loan balance annually. The good news: once you reach 20% equity (either through payments or appreciation), you can request PMI removal.
Mortgage Rates in 2025: What to Expect
After the Federal Reserve's rate hike cycle, 30-year fixed mortgage rates have settled in the 6.5%–7.5% range in 2025. While these rates are higher than the record lows seen in 2021, they're still below the historical average of about 8%. Many economists expect rates to gradually decrease over the next 18–24 months as inflation stabilizes.
Even a 0.5% difference in rate significantly impacts your payment. On a $350,000 loan, the difference between 6.5% and 7.0% is about $112 per month — or over $40,000 in total interest over 30 years. Always shop multiple lenders and compare APR, not just the stated interest rate.
How Much Mortgage Can I Qualify For?
Lenders use two primary ratios to determine your mortgage eligibility:
- Front-end ratio (housing ratio): Your total monthly housing cost (PITI + PMI + HOA) should be no more than 28% of your gross monthly income.
- Back-end ratio (debt-to-income): All monthly debt payments (mortgage + car loans + student loans + credit cards) should be no more than 43% of gross income for conventional loans (though FHA allows up to 50%).
A good credit score (740+) can qualify you for better rates, while a score below 620 may disqualify you from conventional loans entirely. FHA loans accept scores as low as 580 with a 3.5% down payment.
30-Year vs. 15-Year Mortgage: Which Is Right for You?
This is one of the most common questions homebuyers face. Here's a quick breakdown:
- 30-year mortgage: Lower monthly payments, more flexibility, but significantly more interest paid over time. Best for first-time buyers, people with variable income, or those who want to invest the difference.
- 15-year mortgage: Higher monthly payments (typically 30–40% more), but you build equity twice as fast and pay roughly 50–60% less in total interest. Best for those with stable, high incomes who want to be debt-free faster.
Use our calculator to compare both scenarios side by side — the long-term difference is often eye-opening.