Types of debt explained
Debt is money you borrow from a lender under a legal agreement that requires you to repay the amount borrowed plus any interest and applicable fees over time.
Most debt agreements include these basic components:
- Principal: The original amount you borrow.
- Interest: The cost of borrowing the money, usually expressed as an annual percentage rate, or APR.
- Fees: Additional charges, such as origination fees, annual fees or late payment fees.
- Repayment terms: How much you owe each month and how long you have to repay the debt.
Different types of debt are designed for different purposes. For example, mortgages help finance home purchases, whereas credit cards are intended for everyday spending.
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Types of debt: secured vs. unsecured
There are two main types of consumer debt: secured and unsecured. The main difference between the two is whether collateral is required.
The following table provides a side-by-side comparison of secured and unsecured debt.
| Secured debt | Unsecured debt | |
|---|---|---|
| Collateral required | Yes | No |
| Common examples | Mortgages, auto loans, home equity loans, HELOCs | Credit cards, personal loans, medical debt, most student loans |
| Typical interest rates | Usually lower | Usually higher |
| Default consequences | Lender may seize collateral | Collections, lawsuits, credit damage |
Secured debt definition and examples
Secured debt is backed by collateral, which is an asset you pledge to the lender as security for the loan. Since the lender can recover its losses by taking the asset if you stop making payments, secured loan lenders can typically afford to charge lower interest rates and set less stringent eligibility requirements.
A home equity line of credit (HELOC) is secured by your home's equity and lets you draw funds as needed.
Some of the most common types of secured debt include:
- Mortgages
- Car loans
- Home equity loans
- HELOCs
Unsecured debt definition and examples
Unsecured debt doesn't require collateral, and the lender bases their decision on your credit score and financial history. But since there’s no asset to protect the lender if you default, rates are generally higher because the lender is taking on more risk.
A few examples of unsecured debt include:
- Credit cards
- Personal loans
- Medical debt
- Most student loans
How default differs by debt type
Defaulting on either type of debt can damage your credit, but the consequences are quite different.
Defaulting on secured debt
If you default on secured debt, the lender can repossess the collateral or foreclose on it. For example, if you miss your mortgage payments, you could face losing your home.
Defaulting on unsecured debt
With unsecured debt, lenders typically can't seize your property immediately. But what they can do is send the account to collections, report your missed payments to the credit bureaus or pursue legal action to recover the money you owe them.
Types of debt: revolving vs. installment
Another important distinction with different types of debt is how you borrow and repay the money. Installment loans give you a lump sum up front, whereas revolving lines of credit allow flexible borrowing up to a credit limit.
The table below compares the main characteristics of revolving debt and installment debt.
| Revolving debt | Installment debt | |
|---|---|---|
| How borrowing works | Borrow up to a credit limit repeatedly | Receive one lump sum upfront |
| Payment structure | Variable payments with minimum payment requirements | Fixed monthly payments over a set term |
| Interest behavior | Charged only on outstanding balances, often variable | Usually fixed, though some loans have variable rates |
| Common examples | Credit cards, HELOCs | Mortgages, auto loans, personal loans, student loans |
Revolving debt definition and examples
Revolving debt gives you access to a credit limit that you can borrow from, repay and borrow from again without submitting a new loan application each time.
Credit cards are the most common example of revolving debt. If you have a $10,000 credit limit and you spend $2,000, you'll still have $8,000 in credit available. Once you repay part or all of the balance, that credit amount becomes available again.
Installment debt definition and examples
Installment debt gives you a lump sum upfront that you’ll repay via fixed monthly payments over the life of the loan. Since installment loans have predictable monthly payments, they’re usually easier to budget for than revolving credit.
Some of the most common types of installment loans:
- Mortgages
- Personal loans
- Student loans
Which structure fits your needs?
Neither installment nor revolving credit is inherently better, and many people actually use both. That said, installment loans typically make more sense for large one-time expenses like financing home improvements or buying a car, especially if you want predictable payments.
But if you have ongoing expenses or long-term projects that you need help financing, revolving credit is generally the better option, since it gives you more flexibility to access funds whenever you need them without having to reapply for a loan.
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Common consumer debt types and examples
There are many types of consumer debt, each designed to meet a different financial need.
- Credit cards: Unsecured revolving debt that offers flexible spending, but often comes with high interest rates if you don’t pay your balance in full each month.
- Mortgages: Long-term secured installment loans used to buy properties (which also serve as collateral).
- Auto loans: Secured installment loans backed by the vehicle, typically repaid over 36 to 72 months.
- Student loans: Loans to pay for tuition and other educational expenses. Federal and private student loans typically don't require collateral, and federal student loans have unique repayment and forgiveness options.
- Personal loans: Fixed-term loans that can be used for debt consolidation, home improvements, emergencies and other personal expenses. They can be secured or unsecured, though unsecured loans are more common.
- Home equity loans: Installment loans that let homeowners borrow against their home equity.
- HELOCs: Revolving lines of credit secured by home equity that let borrowers draw funds as needed during a draw period.
- Medical loan: Loans used for money owed for healthcare services or medical bills.
- Payday loans: A type of short-term, high-interest debt that often carries extremely high fees and interest rates. According to the Consumer Financial Protection Bureau (CFPB), it’s not uncommon for payday loans to charge a 400% APR. Because of how expensive they are, they should always be seen as a last resort.
If you're struggling to keep up with payments on any of these debts, look into debt relief options such as debt consolidation, credit counseling or debt settlement. If you’re overwhelmed with the choices, you can also reach out to the National Foundation for Credit Counseling (NFCC) to help you figure out your next steps.
FAQ
What is the most common type of debt?
Credit card debt is the most common type of debt in the United States, held by roughly 46% of adults, according to the Federal Reserve.
Is all debt bad?
No, not all debt is bad. If you make repayments on time, some debts can actually boost your credit score and build your net worth. But if you’re not careful, debt can also worsen your financial situation.
How does secured debt differ from unsecured debt?
Secured debt differs from unsecured debt in that secured loans require collateral, whereas unsecured debt does not. Unsecured debt relies solely on your creditworthiness and promise to repay it.
What is revolving credit?
Revolving credit is a type of loan that automatically renews as the debt is paid. In other words, it lets you borrow money up to your credit limit, repay what you've borrowed and borrow again.
Article sources
ConsumerAffairs writers primarily rely on government data, industry experts and original research from other reputable publications to inform their work. Specific sources for this article include:
- Consumer Financial Protection Bureau, "What Are the Costs and Fees for a Payday Loan?" Accessed July 16, 2026.
- Federal Reserve Bank of St. Louis, "Which U.S. Households Have Credit Card Debt?" Accessed July 16, 2026.
