Mortgage Calculator USA — Free 2026
Estimate your monthly mortgage payment including principal, interest, property tax and home insurance.
Your Mortgage Breakdown
How It Works
- Enter home price and down payment
- Set loan term and interest rate
- Add taxes and insurance
- Review your results
Understanding Mortgages in the USA
A mortgage is the largest financial commitment most Americans will ever make. Understanding how monthly payments are calculated — and which factors drive the total cost of homeownership — is essential for making an informed decision. This calculator breaks down every component of your monthly payment so you can plan your budget with confidence.
How the Mortgage Payment Formula Works
The principal and interest portion of your monthly payment is determined by the standard amortization formula. The loan amount (home price minus your down payment) is multiplied by a factor that accounts for the monthly interest rate and the total number of payments. Early in the loan, most of each payment goes toward interest. Over time, a larger share is applied to the principal balance. This gradual shift is called amortization.
For example, on a $280,000 loan at 6.5% over 30 years, about $1,770 goes to principal and interest each month. In the first payment, roughly $1,517 is interest and only $253 reduces the principal. By year 20, the split reverses dramatically. You can use our ROI calculator to evaluate whether investing your down payment elsewhere might yield better returns.
Fixed-Rate vs. Adjustable-Rate Mortgages
A fixed-rate mortgage locks your interest rate for the entire loan term — 15, 20 or 30 years. Your principal and interest payment never changes, making budgeting predictable. An adjustable-rate mortgage (ARM) starts with a lower introductory rate that resets periodically (typically after 5 or 7 years). ARMs can save money short-term but carry the risk of higher payments if rates rise. This calculator models a fixed rate, which is the most common choice for US homebuyers.
The Impact of Your Down Payment
Putting 20% down on a home has long been the gold standard because it eliminates the need for private mortgage insurance (PMI). PMI typically costs 0.5–1% of the loan amount per year and is required by most lenders when the down payment is below 20%. On a $350,000 home, that means an extra $117–$233 per month until you reach 20% equity. However, many government-backed programs (FHA, VA, USDA) allow much smaller down payments — sometimes as low as 0% for qualifying veterans.
A larger down payment also reduces your loan-to-value ratio, which can help you qualify for a lower interest rate. Even a 0.25% rate reduction on a 30-year mortgage can save tens of thousands of dollars over the life of the loan.
Property Taxes and Home Insurance
Your mortgage payment is often quoted as "PITI" — Principal, Interest, Taxes and Insurance. Property taxes vary widely across the United States. States like New Jersey and Illinois have effective rates above 2%, while Hawaii and Alabama average below 0.5%. Your local county assessor determines your home's taxable value, which may differ from the purchase price.
Homeowners insurance protects against damage from fire, storms, theft and liability. The average US homeowner pays roughly $1,200–$2,000 per year, but costs are higher in hurricane-prone or wildfire-risk areas. Both taxes and insurance are typically collected monthly by your lender and held in an escrow account.
Choosing the Right Loan Term
A 30-year mortgage is the most popular option in the United States because it offers the lowest monthly payment. However, you will pay significantly more in total interest compared to a shorter term. A 15-year mortgage roughly doubles your monthly payment but can cut total interest by more than half. The 20-year term offers a middle ground. Use this calculator to compare all three options side by side and find the term that fits your budget.
If you are also evaluating a business purchase alongside a home, our break-even calculator can help you understand when an investment pays for itself.
Tips for Getting the Best Mortgage Rate
Your credit score is the single biggest factor in the rate you receive. Borrowers with scores above 740 typically qualify for the lowest advertised rates. Other factors include your debt-to-income ratio, employment history, loan amount and property type. Shopping multiple lenders and comparing Loan Estimates — a standardized disclosure required by federal law — can save you thousands over the life of your mortgage. Even a small rate difference compounds significantly over 15 or 30 years.
Mortgage Term Comparison
The table below compares three common loan terms for a $350,000 home with 20% down ($280,000 loan) at typical 2026 fixed rates. Principal and interest only — taxes and insurance are not included.
| Term | Rate | Monthly Payment | Total Interest | Total Cost |
|---|---|---|---|---|
| 15 years | 5.80% | $2,341 | $141,380 | $421,380 |
| 20 years | 6.10% | $2,029 | $206,960 | $486,960 |
| 30 years | 6.50% | $1,770 | $357,200 | $637,200 |
Choosing a 15-year term over a 30-year term saves roughly $215,820 in interest — but requires $571 more per month. The 20-year option offers a practical middle ground with meaningful interest savings and a manageable payment increase.
2026 Mortgage Rate Trends
After peaking near 8% in late 2023, 30-year fixed mortgage rates have gradually moderated. As of early 2026, most borrowers are seeing rates in the 6.0–7.0% range for a conventional 30-year fixed loan, with 15-year rates roughly 0.5–0.75 percentage points lower. The Federal Reserve has begun easing monetary policy, which has helped push rates down from their 2023–2024 highs.
Most housing economists expect rates to continue drifting lower through 2026, though the pace depends on inflation data and broader economic conditions. Rates are unlikely to return to the historic lows of 2020–2021 anytime soon. Borrowers who lock in at current levels may benefit from refinancing opportunities if rates fall further, while those waiting for significantly lower rates risk rising home prices offsetting any payment savings.
New Car Loan Interest Deduction (OBBB 2026)
While mortgage interest has long been deductible for itemizers, the One Big Beautiful Bill Act introduced a brand-new deduction for auto loan interest — up to $10,000 per year for qualifying vehicles purchased after 2024. Unlike the mortgage interest deduction, the car loan deduction is available even if you take the standard deduction. If you are buying both a home and a car, use our car loan interest deduction calculator to see how much you could save on your auto financing.
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