A mortgage is a loan you take out to buy a house or property, where the property itself serves as security for the lender

When you borrow money to buy a home, the lender (usually a bank or mortgage company) gives you the full purchase price upfront. You then repay that money over time—typically 15 to 30 years—in monthly payments that include both principal (the amount you borrowed) and interest (the lender's fee for lending). The key difference between a mortgage and other loans is that if you stop making payments, the lender can take the house back through a process called foreclosure. This is why mortgages usually have lower interest rates than personal loans: the lender has collateral to recover their money.

You do not own the house outright until you have paid off the entire loan. The lender holds a legal claim against the property called a lien. Once you pay off the mortgage, the lien is removed and the deed—the document proving ownership—becomes fully yours.

Key Takeaways

  • A mortgage is a long-term loan secured by the house itself, meaning the lender can foreclose if you do not pay.
  • Monthly payments cover both principal (what you borrowed) and interest (what the lender charges), with the split changing over time.
  • The lender holds a legal claim on the property until the loan is fully repaid, even though you live there and pay property taxes.
  • Interest rates and loan terms vary based on your credit score, down payment size, and the lender's requirements.
  • Property taxes, homeowners insurance, and maintenance costs are separate from the mortgage payment and are your responsibility as the owner.

How the monthly payment breaks down

Your monthly mortgage payment has four main parts, often remembered by the acronym PITI. Principal is the portion that reduces what you owe on the loan itself. Interest is the lender's charge, calculated as a percentage of the remaining balance. Property taxes are paid to your city or county and fund local schools and services. Homeowners insurance protects the building against fire, theft, and weather damage.

Early in the loan, most of your payment goes toward interest rather than principal. As years pass and your balance shrinks, more of each payment chips away at what you actually owe. A 30-year mortgage at 6% interest means you might pay $360 in interest for every $100 in principal during the first year, but that ratio flips by year 25. This is why paying extra toward principal early on can save you tens of thousands in interest over the life of the loan.

Your lender typically collects property taxes and insurance through an account called an escrow. You pay a combined amount each month, and the lender holds and distributes those funds when bills are due. This protects the lender's investment: if you stopped paying taxes or insurance, the property could be seized or damaged, leaving the lender with a worthless collateral.

Fixed-rate versus adjustable-rate mortgages

A fixed-rate mortgage locks in the same interest rate for the entire loan term. If you borrow at 5%, your rate stays 5% whether you pay off the loan in 15 years or 30. This makes budgeting predictable: your principal and interest payment never changes. The trade-off is that fixed rates are usually higher than the starting rate of an adjustable mortgage, because the lender is taking on the risk that interest rates will rise.

An adjustable-rate mortgage (ARM) starts with a lower interest rate that is fixed for a set period—often 3, 5, 7, or 10 years—then adjusts periodically based on market conditions. After the fixed period ends, your rate might go up or down, and your monthly payment changes with it. ARMs are riskier for borrowers because a sharp rise in rates can make your payment unaffordable. They make sense only if you plan to sell or refinance before the rate adjusts, or if you can absorb a payment increase.

Down payment and what it means for your loan

The down payment is the cash you put toward the purchase price upfront. If a house costs $300,000 and you put down $60,000, you borrow $240,000. Down payments typically range from 3% to 20% of the purchase price, though some programs allow lower percentages. A larger down payment means you borrow less, pay less interest over time, and often may have access to for a better interest rate.

If your down payment is less than 20%, most lenders require you to pay private mortgage insurance (PMI)—an extra monthly fee that protects the lender if you default. PMI typically costs 0.5% to 1% of the loan amount per year, added to your monthly payment. Once your loan balance drops to 80% of the original home value (through a combination of payments and home appreciation), you can request that PMI be removed, though you must ask—lenders do not remove it automatically.

Credit score and interest rates

Your credit score directly affects the interest rate a lender offers you. Someone with a score of 760 or higher might may have access to for a rate of 5.5%, while someone with a score of 620 might be offered 7% or higher for the same loan amount and term. Over 30 years, that 1.5% difference means paying tens of thousands of dollars more in interest. This is why improving your credit before explore for a mortgage—by paying down existing debt and fixing errors on your credit report—can save you real money.

Lenders also look at your debt-to-income ratio, which compares your monthly debt payments (car loans, credit cards, student loans, and the new mortgage) to your gross monthly income. Most lenders want this ratio below 43%, meaning your total monthly debts should not exceed 43% of what you earn before taxes. If you earn $5,000 per month, your total debt payments should stay under $2,150.

Refinancing and paying off early

Refinancing means taking out a new mortgage to pay off the old one. Borrowers refinance when interest rates drop (to lower their rate and monthly payment), when they want to shorten the loan term (from 30 years to 15), or when they need cash (a cash-out refinance). Refinancing involves closing costs—fees for appraisal, title search, and lender processing—that typically run 2% to 5% of the loan amount. It only makes financial sense if the savings from a lower rate outweigh those costs.

You can also pay off a mortgage early by making extra payments toward principal. Some borrowers make one extra payment per year, or split their monthly payment in half and pay twice monthly, which reduces the total interest paid and shortens the loan by several years. Check your mortgage documents first: some loans include a prepayment penalty, a fee charged if you pay off the loan too quickly, though these are less common now.

The difference between a mortgage and other types of home loans

A home equity loan is a second loan against your home, using the difference between what your house is worth and what you still owe on the mortgage. If your home is worth $400,000 and you owe $250,000, you have $150,000 in equity. You can borrow against that equity at a fixed rate, usually higher than your mortgage rate but lower than credit card rates. Home equity loans are often used for renovations, debt consolidation, or major expenses.

A home equity line of credit (HELOC) works like a credit card: you have access to a set amount of your home's equity and draw from it as needed, paying interest only on what you use. HELOCs have variable rates that adjust with the market, making them riskier if rates spike. A reverse mortgage is available to homeowners 62 and older and works backward: the lender pays you, and you repay when you sell the home or pass away. All three use your home as collateral, so defaulting puts your house at risk.

Frequently Asked Questions

What happens if I miss a mortgage payment?

Missing one payment typically triggers a late fee and a note on your credit report. After 30 days, the lender may report it to credit bureaus. After 90 days of missed payments, the lender can begin foreclosure proceedings. The exact timeline varies by state and lender, but the sooner you contact your lender to discuss options like forbearance or loan modification, the better your chances of avoiding foreclosure.

Can I get a mortgage with bad credit?

Yes, but at a higher interest rate and with stricter requirements. FHA loans (backed by the Federal Housing Administration) allow credit scores as low as 500 with a 10% down payment, or 580 with 3.5% down. VA loans (for military members) and USDA loans (for rural properties) also have more flexible credit requirements. Expect to pay 1% to 3% more in interest than someone with excellent credit.

What is the difference between preapproval and prequalification?

Prequalification is an informal estimate based on information you provide; it does not verify income or credit. Preapproval involves a full credit check and verification of income and assets, and gives you a written commitment for a specific loan amount. Preapproval carries more weight with sellers and shows you are a serious buyer, but it is not a may provide—the lender still inspects the property and finalizes your credit before closing.

Do I have to pay property taxes and insurance through escrow?

If you put down less than 20%, your lender typically requires escrow for taxes and insurance. If you put down 20% or more, you may have the option to pay taxes and insurance directly to the county and insurance company instead. Even if you have the choice, some borrowers prefer escrow because it spreads costs evenly across 12 months rather than paying large bills twice a year.

What is a balloon mortgage?

A balloon mortgage has low monthly payments for a set period (often 5 to 7 years), then requires a large lump-sum payment at the end to pay off the remaining balance. They are riskier because you must have the cash available when the balloon payment is due, or refinance into a new loan. They are most common in commercial real estate and less common for home purchases.