A student loan is money you borrow to pay for education, which you repay with interest over time
A student loan is borrowed money intended to cover education costs — tuition, fees, books, housing, or living expenses while you study. Unlike a grant or scholarship, you must repay it. The lender (a bank, the federal government, or a private company) charges interest, which is a percentage of the loan amount added to what you owe. You typically begin repaying after you graduate, leave school, or drop below half-time enrollment, though the timeline and terms depend on the loan type.
Student loans exist because education costs money upfront, but the benefit of earning a degree often comes later, when you are working. A loan lets you pay for school now and repay it from future income. The catch is that you are paying back more than you borrowed — the interest is the cost of borrowing.
Key Takeaways
- Federal student loans come from the U.S. Department of Education and have fixed interest rates set by Congress, while private loans come from banks or other lenders and have rates that vary by lender and your credit.
- You do not repay federal loans immediately; most have a grace period of six months after you graduate or leave school before payments start.
- Federal loans offer income-driven repayment plans that cap your monthly payment based on what you earn, while private loans typically require a fixed payment regardless of income.
- Interest on federal loans is tax-deductible up to $2,500 per year if your income is below a certain threshold, but interest on private loans is not.
- Defaulting on a student loan — failing to make payments for an extended period — can damage your credit, trigger wage garnishment, and make it harder to borrow money in the future.
Federal loans versus private loans
Federal student loans are issued by the U.S. Department of Education. Congress sets the interest rate each year, and that rate applies to all borrowers taking out loans that year. For loans issued in the 2024–2025 academic year, the rate is fixed for the life of the loan. Federal loans do not require a credit check, so you can borrow even if you have no credit history or poor credit. The government also does not ask whether you can afford the payments before lending to you.
Private student loans come from banks, credit unions, and online lenders. Each lender sets its own interest rate based on your credit score, income, and other factors. A borrower with excellent credit might get a much lower rate than one with poor credit from the same lender. Private loans often require a co-signer — usually a parent — if you have limited credit history. Lenders do check whether you can afford to repay before approving you.
Federal loans are generally less risky for borrowers because the interest rate is predictable and the same for everyone, and because federal loans come with protections private loans do not offer (see below). Private loans can have lower rates if your credit is strong, but they offer fewer safety nets if your circumstances change.
How interest and repayment work
Interest is calculated as a percentage of the loan balance. On a federal loan, the interest rate is fixed — it does not change over the life of the loan. On a private loan, the rate can be fixed or variable; a variable rate can go up or down over time based on market conditions. The longer you take to repay, the more interest you pay in total.
Most federal loans include a grace period — typically six months after you graduate or leave school — during which you do not have to make payments. Interest may still accrue (add up) during this time, depending on the loan type. Private loans vary; some have a grace period and some do not.
Federal loans offer several repayment plans. The Standard Repayment Plan fixes your payment at an amount designed to repay the loan in ten years. Income-Driven Repayment Plans cap your monthly payment based on your current income — you might pay as little as $0 per month if your income is very low, though interest continues to accrue. Private loans typically do not offer income-based plans; you pay a fixed amount each month regardless of income.
Types of federal student loans
Direct Subsidized Loans are available to undergraduate students who demonstrate financial need. The federal government pays the interest while you are in school and during the grace period, so the loan does not grow while you study. Direct Unsubsidized Loans are available to undergraduates and graduate students regardless of need. Interest accrues from the moment the loan is disbursed, meaning the amount you owe grows even while you are in school.
Direct PLUS Loans are for graduate students and parents of undergraduate students. They have a higher interest rate than other federal loans and require a credit check. Direct Consolidation Loans let you combine multiple federal loans into one, which simplifies repayment but may extend the repayment period and increase total interest paid.
The federal government also offers Perkins Loans through some schools, though these are being phased out. These loans have a lower interest rate and are available to students with exceptional financial need.
Protections that come with federal loans
Federal loans include loan forgiveness programs. Public Service Loan Forgiveness (PSLF) forgives remaining balance after ten years of payments if you work for a government agency or nonprofit organization. Income-Driven Repayment forgiveness erases remaining balance after 20 to 25 years of payments, though the forgiven amount may be treated as taxable income. Teacher Loan Forgiveness cancels up to $17,500 for teachers who work in low-income schools for five years.
Federal loans also offer deferment and forbearance — temporary pauses in payments — if you face hardship like unemployment, medical emergency, or return to school. During deferment on subsidized loans, the government pays interest. During forbearance, interest accrues but you do not have to pay. Private loans rarely offer these options.
If you become permanently disabled, federal loans can be discharged (erased) through the Total and Permanent Disability discharge program. Private loans have no equivalent.
What happens if you do not repay
Default occurs when you fail to make a payment for 270 days (about nine months) on a federal loan. Once you default, the entire remaining balance becomes due immediately. The government can garnish your wages (take money directly from your paycheck), intercept your tax refund, and reduce your Social Security benefits if you are retired. Default also severely damages your credit score, making it harder to borrow for a car, home, or anything else.
Private loans default sooner — often after 120 days of missed payments — and the consequences are similar: wage garnishment, damaged credit, and potential lawsuit. However, private lenders cannot intercept tax refunds or Social Security.
If you are struggling to pay, contact your loan servicer before you miss a payment. Federal loans offer income-driven plans and forbearance that can lower or pause payments. Private lenders may negotiate, but they are not required to offer the same options.
Frequently Asked Questions
Do I have to start repaying student loans right after I graduate?
No. Most federal loans include a six-month grace period after you graduate or leave school before payments begin. Some private loans also offer a grace period, but not all — check your loan documents. If you return to school at least half-time, the grace period typically resets.
Can student loan interest be deducted from my taxes?
Federal student loan interest up to $2,500 per year can be deducted if your income is below a certain threshold (for 2024, $75,000 for single filers). Private student loan interest is not tax-deductible. You do not need to itemize deductions to claim this credit.
What is the difference between a subsidized and unsubsidized federal loan?
On a subsidized loan, the federal government pays interest while you are in school and during the grace period. On an unsubsidized loan, interest accrues from day one, so you owe more when repayment begins. Subsidized loans are only for undergraduates with demonstrated financial need.
Can I pay off my student loan early without a penalty?
Yes, federal loans have no prepayment penalty — you can pay extra or pay off the entire balance at any time without penalty. Most private loans also allow early repayment without penalty, but check your promissory note to be sure.
What happens to my student loans if I do not finish my degree?
You still must repay them. The grace period begins when you leave school, regardless of whether you completed your degree. If you borrowed more than you needed and have a credit balance, you can request a refund of the excess, but you must repay what you actually borrowed and spent on education.