How to Get a Mortgage in the USA: A Complete Guide for First-Time Home Buyers
Buying a home is one of the biggest financial decisions most people make. For many buyers, paying the full purchase price in cash is not realistic, which is why a mortgage can make homeownership possible.
A mortgage is a loan used to purchase real estate. You typically make a down payment and borrow the remaining amount from a lender, then repay the loan over a set period with interest.
For first-time buyers, the process can seem complicated. You need to understand your credit score, income, down payment, interest rate, loan options, closing costs, and monthly payment before choosing a mortgage.
This guide explains the major steps involved in getting a mortgage in the United States.
What Is a Mortgage?
A mortgage is a secured loan used to purchase a home or other real estate. The property itself generally serves as collateral for the loan.
For example, if you purchase a $300,000 home with a $60,000 down payment, you may need a $240,000 mortgage.
Your monthly mortgage payment may include:
- Principal
- Interest
- Property taxes
- Homeowners insurance
- Mortgage insurance, when applicable
- HOA fees, if applicable
The exact payment depends on the loan amount, interest rate, loan term, taxes, insurance, and other costs.
How Much Home Can You Afford?
Before looking at houses, determine how much you can realistically afford.
A lender may approve you for a particular loan amount, but that doesn’t necessarily mean you should spend the maximum amount available.
Consider your:
- Monthly income
- Existing debts
- Credit score
- Down payment
- Emergency savings
- Property taxes
- Homeowners insurance
- Maintenance costs
- Other monthly expenses
For example, someone with a high income but substantial car loans, student loans, and credit-card balances may have less borrowing capacity than their income alone suggests.
A useful first step is calculating your expected debt-to-income ratio (DTI).
What Is Debt-to-Income Ratio?
DTI compares your monthly debt obligations with your gross monthly income.
Suppose your gross monthly income is $7,000 and your monthly debt payments total $2,100.
Your DTI would be:
$2,100 ÷ $7,000 × 100 = 30%
Mortgage lenders use DTI as one factor when evaluating whether a borrower can manage additional debt.
The acceptable ratio varies depending on the lender and mortgage program, so don’t assume there is one universal limit.
Check Your Credit Before Applying
Your credit profile can have a major effect on your mortgage options and the interest rate you receive.
Before applying, review your credit reports for errors or outdated information.
You can improve your financial position by:
- Paying bills on time
- Reducing credit-card balances
- Avoiding unnecessary new credit applications
- Paying down outstanding debt
- Checking your credit reports for mistakes
A stronger credit profile may help you qualify for more competitive mortgage terms, although lenders consider multiple factors—not just your credit score.
Save for the Down Payment
The down payment is the amount you pay toward the purchase price yourself.
A common misconception is that every homebuyer needs 20% down.
That isn’t always true.
Some mortgage programs allow qualified borrowers to purchase a home with a relatively small down payment. However, putting less money down can sometimes result in mortgage insurance or higher overall borrowing costs.
For example:
$400,000 home
- 5% down = $20,000
- 10% down = $40,000
- 20% down = $80,000
The best amount depends on your financial situation rather than simply choosing the largest possible down payment.
Don’t Forget Closing Costs
Your down payment isn’t the only money you’ll need when purchasing a home.
You may also have closing costs, which can include expenses associated with the mortgage, property transaction, title services, appraisal, inspections, taxes, and other services.
Closing costs vary considerably depending on the transaction and location.
Before committing to a mortgage, ask the lender for a detailed estimate of the costs involved so you understand how much cash you’ll need at closing.
Compare Mortgage Loan Options
There are several types of mortgages available in the United States.
Conventional Loans
Conventional mortgages are not directly insured or guaranteed by the federal government.
They are widely used by homebuyers and can offer competitive terms to borrowers who meet the lender’s requirements.
FHA Loans
FHA-insured mortgages are designed to make home financing accessible to qualified borrowers who may not meet conventional financing requirements.
They can be particularly useful for some first-time buyers, although borrowers should understand the mortgage insurance costs and other requirements.
VA Loans
VA-backed home loans can provide significant benefits to eligible veterans, active-duty service members, and certain other qualified borrowers.
Depending on eligibility and circumstances, VA financing may offer benefits such as no down payment and no monthly mortgage insurance.
USDA Loans
USDA-backed programs can help eligible buyers purchase homes in qualifying rural areas.
Income and property eligibility requirements apply.
Fixed-Rate vs. Adjustable-Rate Mortgage
One of the most important decisions is choosing between a fixed-rate and adjustable-rate mortgage.
Fixed-Rate Mortgage
With a fixed-rate mortgage, the interest rate generally remains the same throughout the loan term.
This provides predictable principal-and-interest payments.
For buyers who value stability and plan to keep their mortgage for a long period, a fixed-rate loan can be attractive.
Adjustable-Rate Mortgage
An adjustable-rate mortgage, or ARM, can have an initial interest rate that is fixed for a specific period before potentially adjusting according to the loan terms.
An ARM may offer a lower initial rate in some circumstances, but future payments can increase.
Always understand the adjustment rules, caps, index, and margin before choosing an ARM.
Get Pre-Approved Before House Hunting
Mortgage pre-approval can help you understand your potential purchasing budget before making an offer.
During pre-approval, the lender generally reviews information such as your:
- Income
- Assets
- Debts
- Credit history
- Employment information
A pre-approval isn’t a guarantee that your loan will ultimately close. The property and your financial circumstances still need to satisfy the lender’s requirements.
Nevertheless, having a pre-approval can make the home-buying process more organized and can demonstrate to sellers that you’re a serious buyer.
Compare Multiple Mortgage Lenders
Don’t automatically accept the first mortgage offer you receive.
Compare multiple lenders and look beyond the advertised interest rate.
Consider:
- Interest rate
- Annual percentage rate (APR)
- Loan fees
- Origination charges
- Mortgage insurance
- Closing costs
- Loan term
- Prepayment provisions
- Customer service
A slightly lower interest rate doesn’t necessarily mean the loan is cheaper if it comes with substantially higher fees.
Understand APR
The interest rate tells you the cost of borrowing expressed as an interest rate.
APR, or annual percentage rate, can provide a broader measure because it generally incorporates certain finance charges associated with the loan.
When comparing mortgage offers, looking at both the interest rate and APR can help you understand the overall cost of different offers.
However, APR should not be viewed as the only factor when choosing a mortgage.
What Documents Do Mortgage Lenders Need?
When applying for a mortgage, you may need to provide documentation such as:
- Government-issued identification
- Recent pay stubs
- W-2 forms
- Tax returns
- Bank statements
- Investment or retirement account statements
- Information about existing debts
- Employment history
- Documentation explaining certain deposits or financial transactions
Self-employed borrowers may need additional documentation.
Keeping your financial documents organized can make the mortgage process easier.
The Mortgage Application Process
The typical process looks like this:
1. Review your finances
Check your credit, income, savings, and debts.
2. Establish a budget
Determine a comfortable monthly housing payment.
3. Compare lenders
Research mortgage lenders and available loan programs.
4. Get pre-approved
Provide financial information so the lender can evaluate your application.
5. Find a home
Search for properties within your budget.
6. Make an offer
Submit an offer on a property you want to purchase.
7. Complete the loan application
Provide the lender with the information needed to process the mortgage.
8. Home appraisal and underwriting
The lender evaluates the property and your financial information.
9. Review your closing documents
Carefully check the final loan terms and closing costs.
10. Close the loan
Sign the required documents and complete the purchase.
How Much Will Your Monthly Mortgage Payment Be?
Your monthly housing payment depends on several variables.
For a mortgage, the principal-and-interest payment is affected primarily by:
- Loan amount
- Interest rate
- Loan term
Your total monthly housing cost may also include taxes, insurance, mortgage insurance, and HOA expenses.
For example, two homes with the same purchase price can have very different monthly costs because they are located in different areas with different property taxes and insurance costs.
That’s why buyers should calculate the total monthly housing expense, not just the mortgage principal and interest.
Should You Choose a 15-Year or 30-Year Mortgage?
A 30-year mortgage generally provides a lower required monthly payment than a comparable 15-year mortgage, because the balance is repaid over a longer period.
A 15-year mortgage generally allows you to pay off the loan faster and may result in less total interest over the life of the loan, assuming comparable terms.
The trade-off is a higher monthly payment.
For example, a buyer with strong income and low expenses might comfortably handle a 15-year payment, while another buyer may prefer the flexibility of a 30-year mortgage.
Common Mortgage Mistakes to Avoid
1. Buying More House Than You Can Afford
Just because a lender approves a particular amount doesn’t mean you need to spend it.
2. Ignoring Closing Costs
Budget for costs beyond the down payment.
3. Focusing Only on the Interest Rate
Compare the complete loan cost, including fees and other expenses.
4. Taking on New Debt Before Closing
Large purchases or new credit accounts can affect your financial profile during the mortgage process.
5. Using All Your Savings for the Down Payment
Homeownership comes with unexpected expenses. Maintaining an emergency reserve can be important.
6. Skipping Mortgage Comparisons
Different lenders can offer different rates, fees, and loan terms.
Frequently Asked Questions
What credit score do I need to buy a house?
There isn’t one universal credit-score requirement for every mortgage. Requirements vary by loan program and lender. A stronger credit profile can improve your available options and potentially your borrowing costs.
Do I need 20% down to buy a house?
No. Some mortgage programs allow qualified buyers to purchase with less than 20% down. However, a smaller down payment can lead to mortgage insurance or other costs.
How long does getting a mortgage take?
The timeline varies depending on the lender, borrower, property, documentation, appraisal, underwriting, and other circumstances.
Is a fixed-rate mortgage better than an ARM?
Neither is automatically better for everyone. A fixed-rate mortgage provides payment-rate stability, while an ARM may offer a different initial rate structure. Your expected time in the home and tolerance for future payment changes are important considerations.
Should first-time buyers get pre-approved?
Pre-approval can be useful because it gives buyers a better idea of their potential financing range before shopping for a property.
Final Thoughts
Getting a mortgage doesn’t have to be overwhelming when you understand the process.
Start by reviewing your credit, income, debts, savings, and monthly budget. Then compare mortgage programs and lenders instead of focusing on a single advertised rate.
Most importantly, choose a mortgage payment that fits comfortably within your overall financial plan. The goal isn’t simply to qualify for the largest possible loan—it’s to purchase a home while maintaining enough financial flexibility for emergencies, maintenance, and other life expenses.
Before signing a mortgage, review the complete loan terms and consider speaking with a qualified mortgage professional or financial adviser about your individual circumstances.