Student loans are unsecured installment loans, meaning you borrow a fixed amount and repay it in regular monthly payments over a set period, without putting up any collateral like a house or car. Beyond that basic classification, student loans split into two major categories: federal loans funded by the U.S. government and private loans issued by banks, credit unions, or other lenders. The differences between those two categories affect your interest rate, repayment options, and long-term flexibility in significant ways.
Unsecured Installment Debt
In lending terms, there are two key ways to classify any loan: by its repayment structure and by whether it requires collateral. Student loans fall clearly on both counts. They are installment loans, which means you receive the money upfront and pay it back in fixed, scheduled payments over time. This makes them fundamentally different from revolving credit like a credit card, where you can borrow, repay, and borrow again up to a limit.
Student loans are also unsecured. A mortgage is secured by your home. An auto loan is secured by your car. If you stop paying, the lender can take the asset. With a student loan, there is no physical asset backing the debt. Both federal and private student loans work this way. Lenders don’t require collateral as a condition of providing the funds.
That said, student loans carry a unique enforcement mechanism that makes them harder to walk away from than most unsecured debt. They are extremely difficult to discharge in bankruptcy, and the federal government has broad collection powers including wage garnishment and tax refund offsets. So while no collateral is involved, the consequences of nonpayment can be severe.
Federal Student Loans
Federal student loans are funded by the U.S. Department of Education, and their terms and conditions are set by law rather than negotiated by a lender. This distinction matters because it gives federal loans a set of built-in protections that private loans typically lack.
Federal loans carry fixed interest rates, meaning the rate you get when the loan is disbursed stays the same for the life of the loan. For loans first disbursed between July 1, 2025, and June 30, 2026, the rate is 6.39% for undergraduate students, 7.94% for graduate and professional students on Direct Unsubsidized Loans, and 8.94% for Direct PLUS Loans (available to parents of undergraduates and to graduate students). These rates are set annually based on the 10-year Treasury note auction and won’t change once locked in.
Repayment on federal loans doesn’t begin until after you graduate, leave school, or drop below half-time enrollment. You also have access to income-driven repayment plans that cap your monthly payment at a percentage of your discretionary income, and certain borrowers working in public service may qualify for loan forgiveness after a set number of payments.
Subsidized vs. Unsubsidized
Federal loans for undergraduates come in two flavors, and the difference comes down to who pays the interest while you’re in school. With a Direct Subsidized Loan, the government covers the interest while you’re enrolled at least half-time, during your six-month grace period after leaving school, and during any approved deferment. You graduate owing only what you originally borrowed.
With a Direct Unsubsidized Loan, you are responsible for interest from the day the loan is disbursed. If you don’t pay that interest while you’re in school, it accrues and eventually capitalizes, meaning it gets added to your principal balance. That increases the total amount you owe. You can make interest payments while enrolled to prevent this, but you’re not required to.
Subsidized loans are only available to undergraduate students who demonstrate financial need. Unsubsidized loans are available to both undergraduates and graduate students regardless of financial need, which makes them the more widely accessible option.
Private Student Loans
Private student loans come from banks, credit unions, state agencies, or sometimes the school itself. Unlike federal loans, their terms are set by the lender, not by law. That means the interest rate, repayment schedule, and borrower protections vary from one lender to the next.
Private loans may offer either fixed or variable interest rates. A variable rate can start lower than the federal rate but fluctuate over time, potentially increasing your monthly payment. The rate you’re offered depends heavily on your credit score and income (or your cosigner’s), which is a major difference from federal loans, where the rate is the same for every borrower in the same loan category.
Many private lenders require you to begin making payments while still in school, though some offer deferment options. Private loans generally do not offer income-driven repayment plans, and most private lenders have no loan forgiveness programs. If you hit financial trouble, your options for adjusting payments are limited to whatever the lender is willing to negotiate.
How Student Loans Affect Your Credit
Because student loans are installment debt, they show up on your credit report differently than credit cards. Credit scoring models consider your mix of credit types, and having an installment loan alongside revolving accounts can work in your favor. Each monthly payment you make on time builds your payment history, which is the single largest factor in your credit score.
Late payments, on the other hand, can do real damage. Federal loan servicers typically report a payment as late after 90 days, while private lenders may report after just 30 days. Once a student loan goes into default, it stays on your credit report for seven years and can make it difficult to qualify for other types of credit like a mortgage or car loan.
Which Type of Loan to Borrow First
If you need to borrow for school, the general order of priority is straightforward. Start by accepting any Direct Subsidized Loans you’re offered, since the government pays the interest while you study. Next, take Direct Unsubsidized Loans up to the amount you need. Only after exhausting federal options should you consider private loans, because you’ll be giving up fixed rates, income-driven repayment, potential forgiveness, and the other protections that come with federal borrowing.
Private loans make the most sense for students who have maxed out their federal borrowing limits and still have a gap to cover, or for borrowers (or cosigners) with strong credit who may qualify for a lower rate than what the federal program offers. Even in that case, weigh the lower rate against the loss of federal protections, especially if your post-graduation income is uncertain.