Mortgage Calculator
Use this free mortgage calculator to estimate your monthly house payment, including principal, interest, property taxes, homeowners insurance, PMI, and HOA fees. Add extra monthly payments to see how much faster you can pay off your loan and how much interest you can save. Works on desktop, tablet, and mobile.
What Is a Mortgage?
A mortgage is a loan secured by real estate that lets you buy a home without paying the full price upfront. The lender provides the funds to purchase the property, and you repay the loan — plus interest — over a set period, most commonly 15 or 30 years in the U.S. Each monthly payment is split between principal (repaying the amount borrowed) and interest (the lender's cost of lending you the money). You do not fully own the home free and clear until the final payment is made, though you build equity with every payment along the way.
How to Calculate Your Mortgage Payment
Calculating a mortgage payment involves more than just principal and interest. First, subtract your down payment from the home's purchase price to find your loan amount. Next, divide your annual interest rate by 12 to get the monthly interest rate, and multiply your loan term in years by 12 to find the total number of monthly payments. These numbers feed into the standard loan amortization formula:
M = P × [r(1+r)n] ÷ [(1+r)n − 1]
Where M is your monthly principal and interest payment, P is your loan amount, r is your monthly interest rate, and n is your total number of payments. Finally, add your estimated monthly property tax, homeowners insurance, PMI (if applicable), and HOA fees to get your total monthly housing payment — commonly called PITI (Principal, Interest, Taxes, Insurance).
Key Components of a Mortgage
- Loan amount — the home price minus your down payment; this is the actual amount you borrow.
- Down payment — your upfront contribution toward the purchase, typically 3% to 20% of the price. A larger down payment usually earns a better interest rate and can eliminate PMI.
- Interest rate — the annual cost of borrowing, expressed as a percentage; even small rate differences change your payment significantly over 15-30 years.
- Loan term — the number of years you have to repay the loan, most commonly 15 or 30 years.
- Property taxes — local government taxes based on your home's assessed value, often collected monthly via an escrow account.
- Homeowners insurance — required by lenders to protect the property against damage or loss.
- PMI (Private Mortgage Insurance) — required on conventional loans when your down payment is below 20%; it protects the lender, not you, and can usually be cancelled once you reach 20-22% equity.
- HOA fees — recurring dues charged by a homeowners association for shared community upkeep, where applicable.
Types of Mortgage Loans
| Loan Type | Typical Min. Down Payment | Best For |
|---|---|---|
| Conventional | 3% – 5% | Borrowers with good credit who want flexible terms |
| FHA | 3.5% | First-time buyers or those with lower credit scores |
| VA | 0% | Eligible active-duty military, veterans, and surviving spouses |
| USDA | 0% | Buyers in eligible rural and suburban areas within income limits |
| Jumbo | 10% – 20% | Loan amounts above conventional conforming loan limits |
15-Year vs. 30-Year Mortgage Comparison
Loan term has a major impact on both your monthly payment and total interest paid. Here's how a $280,000 loan at 6.5% compares across common terms. These figures are illustrative estimates — use the calculator above with your own numbers for an accurate result.
| Loan Term | Est. Monthly P&I | Total Interest Paid | Best For |
|---|---|---|---|
| 30 years | ~$1,770 | ~$357,000 | Lower monthly payment, more cash flow flexibility |
| 20 years | ~$2,088 | ~$221,000 | Balance of payment size and interest savings |
| 15 years | ~$2,439 | ~$159,000 | Fastest payoff, lowest total interest cost |
Fixed-Rate vs. Adjustable-Rate Mortgages
| Fixed-Rate Mortgage | Adjustable-Rate Mortgage (ARM) | |
|---|---|---|
| Interest rate | Stays the same for the life of the loan | Fixed for an initial period, then adjusts periodically |
| Payment predictability | High — payment never changes | Lower initially, but can rise or fall later |
| Best for | Buyers staying long-term who want stability | Buyers planning to move or refinance before adjustment |
The Impact of Extra Payments
Because early mortgage payments are interest-heavy, even small extra principal payments made early in your loan can produce outsized savings. Adding as little as $100-$200 per month toward principal on a 30-year loan can shave years off your payoff timeline and save tens of thousands of dollars in interest. Use the "Extra Monthly Payment" field in the calculator above to see the effect on your own numbers — the amortization schedule updates automatically to reflect your faster payoff date.
Understanding Closing Costs
Closing costs are separate from your down payment and typically total 2% to 5% of your loan amount. They are due at settlement, when ownership of the property officially transfers to you.
| Closing Cost | What It Covers |
|---|---|
| Loan origination fee | Lender's charge for processing and underwriting your loan. |
| Appraisal fee | Professional estimate of the home's market value. |
| Title insurance | Protects against disputes over property ownership. |
| Escrow deposit | Prepaid taxes and insurance held by your lender. |
| Recording fees | Government charges to officially record the transaction. |
Factors That Affect Your Mortgage Rate
- Credit score — higher scores typically qualify for lower interest rates.
- Down payment size — a larger down payment can reduce your rate and may eliminate PMI.
- Loan term — shorter terms usually come with lower interest rates than longer ones.
- Loan type — fixed-rate, adjustable-rate (ARM), FHA, VA, and USDA loans all price differently.
- Debt-to-income ratio — lenders assess your existing debt relative to income when setting terms.
- Market conditions — broader economic factors and monetary policy influence rates over time.
Tips to Lower Your Mortgage Payment
- Increase your down payment to reduce your loan amount and possibly avoid PMI.
- Improve your credit score before applying to qualify for a better rate.
- Shop and compare rates from multiple lenders.
- Consider a longer loan term to lower monthly payments (though this increases total interest).
- Make extra principal payments over time to reduce total interest paid.
- Ask about discount points to buy down your interest rate.
How Much House Can You Afford?
A widely used guideline is the 28/36 rule: your total monthly housing costs (PITI) should stay under 28% of your gross monthly income, and your total debt payments — including car loans, credit cards, and other obligations — should stay under 36%. Use the calculator above with different home prices to see how your estimated payment fits your monthly budget.
A Brief History of Mortgages in America
In the early 20th century, buying a home in the U.S. required a large down payment, often 50%, on a short-term loan followed by a lump-sum "balloon" payment — putting homeownership out of reach for most families. Widespread mortgage defaults during the Great Depression led the government to create the Federal Housing Administration and later Fannie Mae, which introduced the long-term, fixed-rate, low-down-payment mortgage structure still common today. These reforms fueled the post-war housing boom and pushed the U.S. homeownership rate to record highs by the early 2000s. Government-backed programs remain central to the mortgage market today, insuring millions of home loans and helping stabilize housing finance through economic downturns.
Mortgage Glossary
- Escrow account — a lender-managed account that collects portions of your monthly payment to pay property taxes and insurance on your behalf.
- Equity — the portion of your home's value that you actually own, calculated as home value minus remaining loan balance.
- Amortization — the gradual repayment of a loan through scheduled payments of principal and interest.
- Refinancing — replacing your current mortgage with a new one, usually to secure a lower rate, shorter term, or cash out equity.
- Escrow shortage — occurs when your escrow account doesn't have enough funds to cover tax or insurance bills, often resulting in a higher payment the following year.
Frequently Asked Questions
Q: How much down payment do I need for a mortgage?
A: Down payments typically range from 3% to 20% of the home price. Conventional loans often allow as little as 3–5% down, FHA loans allow 3.5% down, VA and USDA loans can allow 0% down for eligible borrowers, and putting down 20% or more lets you avoid private mortgage insurance (PMI).
Q: What is PMI and when do I need it?
A: Private Mortgage Insurance (PMI) is typically required on conventional loans when your down payment is less than 20% of the home price. It protects the lender if you default and is usually removed automatically once your loan balance drops below 78% of the home's original value.
Q: What is included in a monthly mortgage payment?
A: A typical payment, often called PITI, includes Principal, Interest, property Taxes, and homeowners Insurance. It may also include PMI and HOA fees if applicable.
Q: Should I choose a 15-year or 30-year mortgage?
A: A 15-year mortgage has higher monthly payments but a lower interest rate and far less total interest paid. A 30-year mortgage has lower monthly payments, giving more cash flow flexibility, but costs more in total interest over the life of the loan.
Q: How does making extra payments affect my mortgage?
A: Extra payments applied directly to principal reduce your loan balance faster, which shortens your loan term and reduces the total interest you pay over the life of the loan. Even a small extra monthly payment can save tens of thousands of dollars in interest.
Q: How much house can I afford?
A: A common guideline is the 28/36 rule: your monthly housing costs should be no more than 28% of your gross monthly income, and your total debt payments should be no more than 36%. Use this calculator to test different home prices against your budget.
Q: What credit score do I need to get a mortgage?
A: Most conventional lenders require a minimum credit score of 620, while FHA loans may accept scores as low as 500-580 with a larger down payment. Higher scores generally qualify for lower interest rates.
Q: What are mortgage closing costs?
A: Closing costs typically run 2% to 5% of the loan amount and cover expenses like appraisal fees, title insurance, origination fees, and prepaid taxes and insurance. They are separate from your down payment.
Q: Can I pay off my mortgage early without a penalty?
A: Most modern U.S. mortgages do not carry prepayment penalties, but it's important to confirm this with your loan agreement before making large extra payments or paying off the loan in full.
Q: Is mortgage interest tax deductible?
A: In the U.S., taxpayers who itemize deductions can generally deduct mortgage interest on loans up to certain limits. Consult a tax professional, since eligibility depends on your specific financial situation.
This calculator provides estimates for informational purposes only and does not constitute financial advice. Actual loan terms, rates, and costs vary by lender. Consult a licensed mortgage professional for guidance specific to your situation.