The key differences that determine your repayment options, protections, and total cost.
Choosing between federal and private student loans — or understanding which type you already have — is one of the most important decisions in your education financing. These are not interchangeable products. They have fundamentally different interest rate structures, repayment protections, forgiveness eligibility, and consequences when your financial situation changes. Getting this decision wrong can cost tens of thousands of dollars over a repayment lifetime.
| Feature | Federal Loans | Private Loans |
|---|---|---|
| Who issues them | US Department of Education | Banks, credit unions, online lenders |
| 2024–25 interest rates | 6.53% undergraduate, 8.08% graduate (fixed, set by Congress) | 4%–15% variable or fixed, based on credit score |
| Credit check required | No (for most loans) | Yes — affects rate offered |
| Income-driven repayment | Yes — multiple IDR plans available | No equivalent option |
| Public Service Loan Forgiveness | Yes — after 120 qualifying payments | Not eligible |
| Deferment / forbearance | Generous federal options available | Limited, at lender discretion |
| Annual borrowing limit | $5,500–$20,500/year depending on year and dependency status | Up to cost of attendance |
| Interest subsidy | Subsidized loans: government pays interest while in school | No subsidy — interest accrues immediately |
| Death/disability discharge | Yes — discharged | Varies by lender — many do not discharge |
| Tax deductibility | Interest deductible up to $2,500/year | Interest deductible up to $2,500/year |
Federal student loans are issued by the US Department of Education and distributed through your school's financial aid office. There are several types, each with different terms and eligibility requirements.
Direct Subsidized Loans are available to undergraduate students with demonstrated financial need. The government pays the interest that accrues while you're enrolled at least half-time, during the six-month grace period after graduation, and during periods of deferment. This subsidy can represent thousands of dollars in avoided interest costs over a degree program. For the 2024–25 academic year, the rate is 6.53%.
Direct Unsubsidized Loans are available to both undergraduate and graduate students regardless of financial need. Interest accrues from the moment the loan is disbursed — including while you're still in school. Many students are surprised to discover their balance has grown significantly by graduation due to this in-school interest accrual. For undergraduates the rate is 6.53%; for graduate students it is 8.08%.
Direct PLUS Loans are available to graduate students and parents of dependent undergraduates. They carry a higher rate (9.08% for 2024–25) and require a credit check. There is no income-based subsidy and borrowing limits are based on the cost of attendance. PLUS loans are frequently the most expensive federal option and should typically be borrowed only after exhausting subsidized and unsubsidized limits.
Federal loan annual limits are deliberately modest. Dependent undergraduates can borrow a maximum of $5,500 in year one, $6,500 in year two, and $7,500 in years three and four — a total of $27,000 over four years. Independent undergraduates have higher limits, topping out at $57,500 total. For many students attending schools with high costs of attendance, these limits fall well short of what they need.
This gap is precisely where private loans enter. Private loans can cover the difference between federal limits and actual costs, but at the trade-off of losing all federal protections. The correct approach for most students is to exhaust federal loan eligibility completely before considering any private borrowing — and to keep private borrowing as limited as possible.
The right borrowing order: Scholarships and grants first → Work study → Subsidized federal loans → Unsubsidized federal loans → Parent PLUS loans → Private loans as a last resort. Private loans should never be your first choice.
Private student loans make sense in a narrow set of circumstances. If you have exhausted federal loan limits, do not qualify for significant federal aid, have a strong credit history (or a creditworthy cosigner), and are borrowing for a degree with strong earnings prospects — private loans can be a reasonable option to cover the remaining gap.
Borrowers with excellent credit (750+) can sometimes qualify for private loan rates below current federal rates. A private lender offering 4.5% to a creditworthy borrower is genuinely less expensive than the 6.53% federal rate. However, this rate advantage must be weighed against the permanent loss of income-driven repayment flexibility and forgiveness eligibility.
If you're unsure whether your loans are federal or private — a common situation given how financial aid is packaged — the answer is straightforward. Log in to studentaid.gov using your FSA ID. Every federal loan you have ever taken out will be listed there with the balance, interest rate, and repayment status. Any loans not appearing in studentaid.gov are private loans. Contact your school's financial aid office or check loan documents from your lender to identify private loan details.
Federal loan default (after 270 days of non-payment) triggers serious consequences: wage garnishment, seizure of tax refunds and Social Security benefits, and reporting to credit bureaus. However, federal borrowers have extensive options to avoid default — income-driven repayment can reduce payments to $0, and the Fresh Start program can rehabilitate defaulted loans.
Private loan default moves faster and has fewer escape routes. Private lenders can sue for the full balance, obtain judgments, and pursue wage garnishment through courts. There is no income-driven option to reduce payments during hardship, and lenders are not obligated to offer rehabilitation programs. The consequences of private loan default are generally more immediate and harder to resolve than federal loan default.
For most students, the answer is simple: take every dollar of federal loans you're eligible for before considering private options. Federal loans have fixed rates, flexible repayment, and genuine safety nets. Their rates may be higher than what a creditworthy private borrower could find, but the protections they carry have real financial value that a lower rate alone cannot replicate.
For graduate students with significant debt and uncertain income trajectories — particularly those in medicine, law, social work, or public sector careers — preserving federal loan status is especially important. Income-driven repayment and PSLF were designed specifically for this population and represent potential forgiveness values that far exceed any interest savings from refinancing.
Use the calculator on this site to model exactly what your federal loans will cost under different repayment scenarios before making any decisions about private borrowing or refinancing.