Average Interest on a Student Loan: What Borrowers Actually Pay

Average Interest on a Student Loan

The average interest on a student loan depends on whether the loan is federal or private, when it was disbursed, and the borrower's credit profile. Federal loans have rates set by Congress each year, while private loans are priced by lenders based on market indexes and individual risk. For the 2024–2025 academic year, new federal direct undergraduate loans carry a rate of 6.53%, while graduate direct unsubsidized loans are set at 8.08%. PLUS loans for parents and graduate students carry 9.08%. These figures represent the most recent published rates and apply to loans first disbursed after July 1, 2024.

Private student loan rates range more broadly. As of mid-2025, the average private student loan rate for new borrowers with strong credit tends to fall between roughly 6% and 12%, though advertised rates can start lower for well-qualified applicants. Borrowers with lower credit scores or shorter credit histories often see rates at the higher end of that range, and some private lenders charge rates above 14% in certain cases.

How Federal Student Loan Rates Work

Federal student loan rates are uniform for all borrowers in a given loan year and are tied to the 10-year Treasury note auction held in late May. The rate is the auction yield plus a statutory add-on, which is 2.05% for undergraduate loans, 3.60% for graduate unsubsidized loans, and 4.60% for PLUS loans. Rates are fixed for the life of the loan once disbursed.

• Undergraduate Direct Loans: 6.53% (2024–2025)
• Graduate Direct Unsubsidized Loans: 8.08% (2024–2025)
• PLUS Loans: 9.08% (2024–2025)
• Subsidized loans are not currently offered; the last subsidized undergraduate rate was 4.99% for loans disbursed before July 1, 2023.

Because these rates are set annually, borrowers who take out loans in different academic years will have different rates even for the same loan type. Federal loans also offer income-driven repayment plans and public service forgiveness paths that can reduce the effective cost of borrowing, regardless of the stated rate.

Private Student Loan Rate Landscape

Private student loan rates are not uniform and vary by lender, borrower credit, term length, and whether the loan has a fixed or variable rate. Variable-rate private loans are typically tied to a benchmark such as SOFR (Secured Overnight Financing Rate) plus a margin set by the lender. Fixed-rate private loans are priced based on the lender's cost of funds plus a margin.

• Well-qualified borrowers with excellent credit may access rates near the lowest advertised tiers.
• Average rates for new private loans have generally moved upward since 2022 as benchmark rates rose.
• Shorter repayment terms tend to carry lower rates; longer terms carry higher rates.
• Variable rates can change over the life of the loan, meaning the initial rate is not guaranteed.

Borrowers comparing private loans should focus on the annual percentage rate (APR), which includes both the interest rate and most fees, rather than the nominal rate alone.

Factors That Set Your Rate

Several factors determine the interest rate you receive, whether the loan is federal or private. For federal loans, the only variable is the loan year; credit history does not matter. For private loans, lenders evaluate credit score, income, debt-to-income ratio, and whether you have a cosigner. A cosigner with strong credit can often lower the rate significantly.

• Credit score: higher scores generally unlock lower rates.
• Income and employment: stable income reduces lender risk.
• Loan term: shorter terms usually mean lower rates.
• Market conditions: broader interest rate moves affect private pricing.
• Fixed vs. variable: variable rates may start lower but carry future adjustment risk.

How to Lower Your Effective Interest

Borrowers can take specific steps to reduce the interest they pay over the life of a student loan. For federal loans, enrolling in an income-driven repayment plan lowers monthly payments, though it may extend the repayment period and increase total interest paid. Making extra payments whenever possible reduces principal and the total interest that accrues.

• Refinance federal loans into a private loan if you can secure a lower rate, but note that you will lose federal protections.
• Sign up for autopay; many lenders offer a 0.25% rate reduction for automatic payments.
• Make interest payments while still in school to prevent capitalization.
• Pursue employer repayment benefits, which some companies offer as part of compensation packages.
• Explore state-based or nonprofit repayment assistance programs if you work in qualifying fields.

Federal vs. Private: Cost Comparison

Bottom Line

The average interest on a student loan is not a single number but a range shaped by loan type, year, and borrower profile. Federal rates are predictable and uniform within a loan year, while private rates vary by credit and market conditions. Understanding which rate applies to you, how it is calculated, and which repayment strategies reduce total cost is the most practical step any borrower can take.