Student Loans Explained: Federal vs. Private, Subsidized vs. Unsubsidized, and Key Terms

Overview of Student Loans

Student loans are a common way to pay for college, but not all loans are the same. The two main categories are federal student loans—funded by the U.S. Department of Education—and private student loans—offered by banks, credit unions, and other lenders. Federal loans generally offer more favorable terms and conditions, including fixed interest rates, income-driven repayment plans, and forgiveness options, while private loans are credit-based and can vary widely in cost and flexibility. Understanding these differences can help you make a more informed borrowing decision.

• Federal loans: Backed by the government, with fixed rates and borrower protections.
• Private loans: Offered by private lenders, with credit-based underwriting and variable or fixed rates.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid

Federal vs. Private Loans: Key Differences

Federal student loans are typically the first choice for students because they do not require a credit check for most loan types (except PLUS loans), have fixed interest rates that are often lower than private rates, and offer multiple repayment options, including income-driven plans. They also may be eligible for loan forgiveness programs, such as Public Service Loan Forgiveness, and provide deferment or forbearance options if you hit financial hardship. In contrast, private student loans are not subsidized, may require payments while you are still in school, and generally do not offer income-driven repayment or forgiveness programs. They also often require a credit check and a cosigner if you have limited credit history.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, ACT, Inc., Student Loan Borrower Assistance (National Consumer Law Center)

Subsidized vs. Unsubsidized Loans

Direct Subsidized Loans are available to undergraduate students who demonstrate financial need. To qualify, you must be enrolled at least half-time in an eligible program. The federal government pays the interest on these loans while you are in school at least half-time, during the grace period after you leave school, and during deferment periods. This makes subsidized loans the most affordable type of federal loan.

Direct Unsubsidized Loans are available to both undergraduate and graduate students, and you do not need to demonstrate financial need. However, there is no interest subsidy: interest begins accruing from the time the loan is disbursed, and you are responsible for all interest that accumulates, even while you are in school.

• Subsidized: Need-based; available only to undergraduates enrolled at least half-time; government pays interest during school, grace, and deferment.
• Unsubsidized: No need requirement; available to undergrads and grads; interest accrues from disbursement.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, ACT, Inc., Sallie Mae, SCU Credit Union

Parent PLUS and Graduate Loans

Direct PLUS Loans are available to parents of dependent undergraduate students and to graduate or professional students. Unlike other federal loans, PLUS loans require a credit check. If you are denied due to adverse credit history, you may still obtain a PLUS loan by using an endorser or filing an appeal. PLUS loans have a higher fixed interest rate than other federal loans, set annually for the academic year, and also charge an origination fee. For example, for loans disbursed between July 1, 2026 and June 30, 2027, the origination fee for Parent PLUS loans is 4.228%, according to the Vermont Student Assistance Corporation. Interest rates for PLUS loans are set by the government and announced each year; check the Department of Education's StudentAid.gov or your financial aid office for the current rate.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, ACT, Inc., Philadelphia College of Osteopathic Medicine, Vermont Student Assistance Corporation (VSAC)

Interest Rates and Fees

Federal student loans have fixed interest rates set by Congress each academic year. For loans disbursed between July 1, 2026 and June 30, 2027, the undergraduate rate is 6.52% for Direct Subsidized and Unsubsidized Loans, according to Sallie Mae. PLUS loans have a higher fixed rate, but the exact rate for 2026-2027 is not consistently reported across sources; check StudentAid.gov for the current rate.

In addition to interest, federal loans may charge an origination fee, which is a percentage of the loan amount deducted from the disbursement. For PLUS loans, the fee for loans disbursed between July 1, 2026 and June 30, 2027 is 4.228%, according to the Vermont Student Assistance Corporation. Fees for Direct Subsidized and Unsubsidized Loans may also apply, but specific amounts were not consistently provided in the evidence.

Private student loans have interest rates that are credit-based and can be fixed or variable. Variable rates can change over time, and some can be higher than 18%. Private loans may also charge origination fees or other costs, but specific fee structures vary by lender and are not consistently reported across sources.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, Sallie Mae, Vermont Student Assistance Corporation (VSAC), SCU Credit Union, Philadelphia College of Osteopathic Medicine

Repayment Options for Federal Loans

Federal student loans offer multiple repayment options, including standard, extended, and income-driven repayment plans. Income-driven plans base your monthly payment on your income and family size, and any remaining balance may be forgiven after a certain number of qualifying payments. Federal loans also offer deferment and forbearance, which allow you to temporarily pause or reduce payments during financial hardship. Importantly, federal loans have no prepayment penalty, so you can pay them off early without extra fees.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, ACT, Inc., Student Loan Borrower Assistance (National Consumer Law Center), Sallie Mae

How to Choose Between Federal and Private Loans

When deciding between federal and private loans, consider your financial need, your credit history, and your future repayment flexibility. Federal loans are often the better choice because they do not require a credit check for most undergraduate loans, have fixed rates, and provide protections such as income-driven repayment and forgiveness. If you need additional funds beyond federal loan limits, private loans can fill the gap, but they typically require a good credit history or a cosigner and may have higher interest rates and fewer repayment options. Always compare interest rates, fees, and borrower protections before choosing a private loan.

• Start with federal loans to take advantage of lower rates and borrower protections.
• Only consider private loans after exhausting federal aid, and compare multiple lenders.
• Be cautious with variable-rate private loans, as rates can rise over time.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, SCU Credit Union, Student Loan Borrower Assistance (National Consumer Law Center), University of Illinois System Student Money Management Center

Federal Loan Annual and Aggregate Limits

Federal student loans have annual and aggregate (lifetime) limits, which vary by dependency status and year in school. For dependent undergraduates, the annual limit for Direct Subsidized and Unsubsidized Loans is $5,500 for the first year, $6,500 for the second year, and $7,500 for the third year and beyond. Of that, the maximum subsidized amount is $3,500, $4,500, and $5,500 respectively. For independent undergraduates (and dependent students whose parents cannot get PLUS loans), the annual limit is $9,500, $10,500, and $12,500, with the same subsidized sub-limits.

The aggregate limit for dependent undergraduates is $31,000, with a maximum of $23,000 in subsidized loans. For independent undergraduates, the aggregate limit is $57,500, with a maximum of $23,000 in subsidized loans. Graduate or professional students have an aggregate limit of $138,500, with a maximum of $65,500 in subsidized loans. Note that these figures are from the 2024-2025 Federal Student Aid Handbook, which is the latest available in the evidence; limits may change, so check with the U.S. Department of Education for current amounts.

Sources: U.S. Department of Education, Federal Student Aid, Sallie Mae

Borrower Protections and Forgiveness Programs

Federal loans offer several protections that private loans typically do not. In addition to income-driven repayment and deferment/forbearance, federal loans may be eligible for Public Service Loan Forgiveness (PSLF) if you work in qualifying public service and make 120 qualifying payments. Private student loans are not eligible for PSLF, and they generally do not offer income-driven repayment options or forgiveness programs. Federal loans also do not require a cosigner for most loan types, while private loans often do. If you have concerns about private student loans, the Consumer Financial Protection Bureau (CFPB) provides a private student loan ombudsman that may assist you.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, Philadelphia College of Osteopathic Medicine, ACT, Inc., Student Loan Borrower Assistance (National Consumer Law Center)

Underwriting Criteria and Credit Requirements

Federal student loans for undergraduates (Direct Subsidized and Unsubsidized) do not require a credit check or a cosigner. In contrast, private student loans are subject to credit-based underwriting, meaning lenders review your creditworthiness and often require a cosigner if you have limited credit history. Direct PLUS loans are the exception among federal loans: they require a credit check. If you are denied a PLUS loan due to adverse credit, you may use an endorser or appeal the decision. For private loans, your credit history and credit score can influence eligibility, interest rates, and loan terms.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, University of Illinois System Student Money Management Center, ACT, Inc., SCU Credit Union, Student Loan Borrower Assistance (National Consumer Law Center)

Comparison Table: Federal vs. Private Student Loans

The table below summarizes the key differences between the main federal loan types and private loans. Use it to compare interest subsidies, eligibility, credit requirements, and repayment features.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, Philadelphia College of Osteopathic Medicine, ACT, Inc., Sallie Mae, SCU Credit Union

Side-by-Side Decision Criteria: When to Choose Each Loan Type

Choosing the right loan type depends on your personal situation. The following guide summarizes the circumstances under which each type of loan generally makes sense based on the evidence.

• Choose Direct Subsidized Loans first if you are an undergraduate with demonstrated financial need, because the government pays interest during school, grace, and deferment.
• Choose Direct Unsubsidized Loans if you do not qualify for subsidized loans or need to borrow beyond the subsidized limit; they are available to both undergraduate and graduate students regardless of need.
• Consider Parent PLUS or Graduate PLUS loans if you are a parent of a dependent undergraduate or a graduate/professional student, but be prepared for a credit check and higher fees.
• Reserve private loans for gaps after you have exhausted federal loan limits, and only if you have a good credit history or a cosigner; be aware of variable rates and fewer borrower protections.

Sources: University of Illinois Urbana-Champaign Office of Student Financial Aid, ACT, Inc., Philadelphia College of Osteopathic Medicine, Sallie Mae