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What Is a Mortgage?

Erin Fox

  • Modified 13, March, 2025
  • Created 26, January, 2024
  • 10 min read

When you’re ready to take the exciting step toward homeownership, you might be wondering, “What is a mortgage?” Simply put, a mortgage is an agreement between you and a lender to help you buy a home or refinance one you already own. 

Mortgage definition and basics

At its core, a mortgage is not just a home loan; it’s your ticket to owning a piece of the American dream. It involves borrowing a specific amount of money to buy a home, and in return, you promise to pay it back over time. The key terms – principal, interest, and down payment play a crucial role in understanding how this financial agreement works. 

  • Principal: The amount of money you borrow determines the size of your mortgage. Borrowers repay this amount over the life of the loan. 
  • Interest: This is the cost of borrowing money. Fixed or adjustable interest rates influence the total amount you repay. 
  • Down Payment: The initial upfront payment you make toward the home’s purchase. This is a percentage of the home’s purchase price. 

How does a mortgage work?

When you decide to buy a property, you typically don’t pay the entire purchase price upfront. Instead, you secure a mortgage from a lender, allowing you to borrow a significant portion of the home’s cost. 

Borrowers then repay the borrowed amount, known as the principal, over an agreed-upon period, usually spanning several decades. The lender charges interest on the borrowed sum, which is the cost of borrowing money. 

This interest, along with the principal, makes up your monthly mortgage payment. As you make these payments, you gradually build home equity in your home – meaning you own a larger share of the property outright. 

Understanding your monthly mortgage payment

Several components, each serving a specific purpose, typically compose your mortgage payment. Let’s break down the key elements that make up your monthly mortgage payment:

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Interest rate structures

A mortgage isn’t just a one-size-fits-all deal; it comes in different shapes and sizes, known as loan terms. The most common types are fixed-rate and adjustable-rate mortgages. 

  • Fixed-rate mortgage

    With a fixed-rate loan, your interest rate stays the same throughout the life of the loan. It offers predictability, making it easier for you to budget. You know exactly what you’ll pay every month, making it an excellent choice for first-time homebuyers. 

  • Adjustable-rate mortgage

    Adjustable-rate mortgages have interest rates that can change over time, typically after an initial fixed period. While your initial interest rate may be lower than that of a fixed-rate mortgage, it can go up or down over time. 

  • Life of the loan

    The life of the loan is the duration over which you’ll be making payments. Lenders will typically set these at 15, 20, or 30 years. The longer the loan term, the smaller your monthly payments, but you’ll end up paying more in interest over the life of the loan. 

Types of mortgage loans

Now that you grasp what a mortgage is, let’s look at the different types for various needs and financial situations. 

The mortgage process

Understanding the process of obtaining a mortgage is essential. Here’s a simple roadmap to guide you through:

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How to compare mortgages

With various mortgage options available, it’s important to know how to compare them effectively. Here’s how you can make an informed decision: 

  • Interest rate

    The interest rate is a critical factor in your mortgage. Compare rates from different lenders and understand whether you’re getting a fixed or adjustable rate. A lower interest rate can save you money over the life of your loan. 

  • Loan term

    Consider the length of the loan term. Shorter terms often have higher monthly payments but lower overall interest costs. Longer terms may offer lower monthly payments but more interest paid over time. 

  • Down payment

    Look at the down payment requirements for each mortgage type. Conventional loans require 3% for first-time homebuyers and 5% for return buyers. FHA loans can be as low as 3.5%. Your down payment affects your monthly payments and the overall cost of your loan. 

  • Closing costs

    Compare the closing costs associated with each mortgage offer. These costs can vary between lenders, and it’s essential to understand the fees involved. 

  • Monthly payments

    Calculate and compare your monthly mortgage payments for each offer. Ensure they align with your budget and financial goals. 

  • Prepayment penalties

    Check if there are prepayment penalties. Some mortgages charge fees if you pay off the loan early. If you plan to do so, it’s best to avoid loans with prepayment penalties. 

  • Flexibility

    Consider how flexible the mortgage terms are. Are you allowed to make extra payments without penalties? Can you refinance if rates drop? These factors can be crucial in the long run. 

Repayment strategies

Having a home is a big financial responsibility, so it’s important to handle mortgage payments wisely for stability. Below are effective repayment strategies to ensure your journey in homeownership is as smooth as possible. 

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