A mortgage is a loan used to buy property where the property itself serves as collateral if the borrower fails to make payments. For most people, a mortgage is the primary path to homeownership and typically represents the largest financial obligation they will undertake—often hundreds of thousands of dollars repaid over decades.
Because mortgages involve lengthy contracts and detailed terms, understanding the fundamentals helps you avoid surprises and ask the right questions when negotiating with a lender.
Looking to buy a home? Check out BEX Realty to search real estate listings, find condos and homes for sale, and work with realtors and concierge services throughout the home-buying process.
Down Payments Are Back in Focus
Historically, putting down 20% of a home’s purchase price was standard practice. During the early 2000s, lenders broadened allowable loan structures and offered low- or no-down-payment options to expand homebuying, contributing to a housing bubble that preceded the Great Recession.
Since 2009, underwriting standards have tightened. Many lenders again expect around a 20% down payment, and in competitive markets sellers sometimes expect even larger down payments. You might still find loans with lower down payment requirements, but it’s wise to plan for roughly 20% when you begin shopping for a home.
What If I Don’t Have a 20% Down Payment?
If you haven’t saved 20%, programs exist to help. The most common is private mortgage insurance (PMI), which protects the lender if you default and helps buyers with smaller savings access homeownership. PMI is typically a monthly fee added to your mortgage payment.
Most mortgages with PMI are structured so you can cancel PMI once you reach about 22% equity in the home. PMI lets a smaller down payment stretch further—for example, turning $10,000 saved into a down payment on a $100,000 home rather than limiting you to homes where $10,000 represents 20% of the purchase price.
ARMs vs. Fixed-Rate Mortgages
The 30-year fixed-rate mortgage, made popular in the 1930s, remains a common choice. With a fixed-rate mortgage, the interest rate is set at closing and does not change, so principal and interest payments stay consistent over time. This predictability is why many borrowers prefer fixed-rate loans.
Adjustable-rate mortgages (ARMs) became more common in the 1980s. ARMs usually start with lower introductory rates that later adjust periodically. Problems arose when some ARMs featured steeply rising rates, short reset periods or unclear terms, contributing to a wave of foreclosures during the housing crisis. Studies showed many ARM borrowers didn’t fully understand rate caps and adjustment rules.
Not all ARMs are risky—some include sensible caps and consumer protections—and not all fixed-rate loans are identical. Still, the post-recession trend has been toward more conservative underwriting and a preference for longer-term fixed-rate mortgages among many borrowers and lenders.
Where Can I Get a Mortgage?
Banks and credit unions are traditional sources for mortgages, and many buyers begin with their existing bank. Other buyers shop multiple lenders or work with mortgage brokers who compare offers and negotiate terms on their behalf.
Remember that mortgages include more than just principal and interest: there are closing costs, ongoing escrowed taxes, insurance premiums and sometimes mortgage insurance. A lower quoted interest rate doesn’t always translate to a lower total monthly payment, so make sure you understand all fees and costs before deciding.
Will I Be Approved for a Mortgage?
Lenders evaluate several factors when deciding whether to approve a mortgage. A strong credit history generally improves approval odds and helps you secure a lower interest rate. Lenders also look at your debt-to-income ratio: a common guideline is that housing costs should not exceed about 28% of gross income and total monthly debt payments should remain under roughly 36%.
For example, if you earn $60,000 a year (about $5,000 per month) and a mortgage would cost $1,200 per month, that meets the 28% housing guideline. But if you also have other monthly debt payments totaling $750, your combined debt would be $1,950 per month—about 39% of income—which could exceed typical lender limits.
Online affordability calculators can give a helpful starting estimate for your price range, but speak with lenders for precise guidance tailored to your financial profile.
What’s Included in My Monthly Payment?
A typical mortgage payment combines four elements: principal repayment, interest, property taxes, and insurance. Taxes and some insurance premiums are often collected through an escrow account and paid on your behalf when due. If your down payment is under 20%, mortgage insurance may also be required.
With fixed-rate loans, monthly payments stay fairly steady, but early payments allocate more to interest than to principal. This amortization schedule reduces the lender’s risk and avoids a large final balloon payment, but it also means building equity takes time.
For example, on a 30-year, $100,000 mortgage at 6% interest, a large portion of early monthly payments goes to interest; only after many years does principal repayment form the larger share of the payment.
Calculating Equity
Home equity is the portion of the property you truly own, equal to the purchase price minus the remaining loan principal. If you make a 20% down payment, you start with 20% equity. As you pay down principal over time, your equity increases. Because amortization schedules front-load interest on fixed-rate loans, significant equity growth may be gradual in the early years.
Lenders prefer borrowers with equity: higher equity reduces default risk and generally improves loan terms if refinancing is considered later.
Pros and Cons of Fixed-Rate Mortgages
Fixed-rate mortgages typically range from five to 30 years, with 30 years being most common. Longer terms mean lower monthly payments but more interest paid over the life of the loan. The main advantage of a fixed-rate loan is predictability: monthly principal and interest payments remain constant, making budgeting easier.
Interest rates offered depend on borrower credit and market conditions rather than solely on loan length. Many borrowers choose fixed-rate mortgages for stability, though others favor adjustable products if they seek lower initial rates.
Pros and Cons of Adjustable-Rate Mortgages
Adjustable-rate mortgages typically start with lower rates than comparable fixed-rate loans, making them attractive for borrowers who expect to sell or refinance within a few years. ARMs can vary: some adjust annually, others every six months or follow hybrid schedules like 5/1 ARMs (fixed for five years, then adjusting annually).
ARMs often link changes to an index and include caps that limit how much the rate can rise during a single adjustment period and over the loan’s life. A well-structured ARM includes these protections. The main risk is circumstances change—if you end up staying in the home longer than anticipated, you may face significantly higher payments when rates adjust.
Other Types of Mortgages
Beyond fixed-rate loans and ARMs, other mortgage types serve specific needs:
Balloon Mortgages
Balloon mortgages amortize as if they were long-term loans but require a remaining balance to be paid in full after a shorter term, typically five to seven years. They offer lower initial payments but require refinancing or paying off the balance when the balloon comes due.
Reverse Mortgages
Reverse mortgages are available to homeowners age 62 and older who have substantial home equity. The lender pays the homeowner instead of the homeowner paying the lender, and repayment typically occurs when the home is sold or the borrower no longer lives in the property. These loans often have high closing costs, and borrowers remain responsible for taxes and insurance.
Government-Backed Mortgages
Several federal programs—such as those administered by the Federal Housing Administration (FHA), the Department of Veterans Affairs (VA), and the Rural Housing Service—guarantee loans made by approved lenders. Because of these guarantees, lenders may offer lower down payment requirements or more favorable rates to eligible borrowers.
Looking to buy a home? Check out BEX Realty to search real estate listings, find condos and homes for sale, and work with realtors and concierge services throughout the home-buying process.