When federal loans don't cover your college costs, private student loans can help bridge the gap. But choosing the right lender and understanding your repayment options is more complex than just looking at the interest rate. You'll need to compare APRs, cosigner requirements, fees, and repayment flexibility across different lenders. This guide walks you through what matters most.
APR vs. Interest Rate: What's the Real Difference?
These terms get used interchangeably, but they mean different things. The interest rate is what you'll pay on the borrowed money. The APR (annual percentage rate) includes the interest rate plus any fees the lender charges, expressed as a yearly rate.
If a lender quotes 5% APR on a $20,000 loan with a 1% origination fee, that fee is factored into the APR. You might see the interest rate alone at 4.8%, but the APR shows the true yearly cost: 5%. Always compare APRs when you're looking at different loans, not just interest rates.
Fixed vs. Variable Rates: Stability or Savings?
Fixed-rate loans have the same interest rate for the entire repayment period. Your monthly payment stays the same. This is predictable and safe—you know exactly what you'll pay each month for the next 10, 15, or 20 years.
Variable-rate loans start with a lower rate but change over time based on market conditions. Your payment could increase, sometimes dramatically, if rates rise. Variable loans are tempting when you see a 2% promotional rate, but remember that rate can jump.
For most borrowers, fixed rates are the better choice. The modest savings from a variable rate aren't worth the risk of payments skyrocketing later.
What Private Student Loan Rates Look Like Right Now
As of April 2026, private student loan APRs range from roughly 2.65% to 17.99% for fixed-rate loans, and 3.5% to 17.99% for variable-rate loans. Your actual rate depends heavily on your credit score and income—and your cosigner's financial situation, if you have one.
Borrowers with excellent credit (750+) and strong income might qualify for rates around 3%–5%. Most student borrowers fall into the 6%–10% range. Those without strong credit history could face rates of 12%–18%.
For comparison, federal student loans for the 2025-2026 school year have fixed rates of 6.39% for undergraduates, 7.94% for graduate students, and 8.94% for PLUS loans. This is why it's so important to exhaust federal loan options first.
The Cosigner Question: What You Really Need to Know
A cosigner is someone (usually a parent) who promises to repay the loan if you can't. Lenders use the cosigner's credit history and income to decide whether to approve the loan and what rate to offer.
If you have limited credit history or lower income, a cosigner makes approval much more likely and typically gets you a better rate—sometimes 1–2 percentage points lower. But this comes with risk for the cosigner: if you miss payments, the lender will pursue them for repayment, and the missed payments hurt their credit score too.
Cosigner Release: Can They Get Off the Hook?
Yes, but it takes time and meeting specific requirements. Here's how the major lenders compare:
- Sallie Mae: Release after 12 consecutive on-time payments, plus passing a credit review. You can also satisfy the 12-payment requirement by prepaying an amount equal to those payments upfront.
- SoFi: 24 consecutive on-time payments required.
- Ascent: Release after 12 months of payments.
Sallie Mae's shorter timeline is a real advantage if your family wants to get the cosigner off the loan faster.
Understanding Fees: Where the Hidden Costs Hide
Origination fees are deducted from your loan amount when you borrow. If you borrow $20,000 with a 1% origination fee, you receive $19,800 but repay the full $20,000 plus interest. Many private lenders charge 0%–5% in origination fees, though some lenders like SoFi and Earnest have eliminated them entirely.
Prepayment penalties are fees charged if you pay off your loan early. Good news: federal law bans prepayment penalties on private student loans. You can always pay extra or pay the loan off completely without penalty.
Late fees vary by lender. Some, like SoFi, charge zero late fees. Others charge $25–$35 per missed payment. These aren't huge, but they're worth checking before you sign.
Your Repayment Options: Which Makes Sense for You?
Private lenders typically offer four repayment plans. Each affects how much total interest you'll pay.
Immediate Repayment
You start making full principal and interest payments right away, even while in school. This minimizes interest—you're not letting debt grow while you study. It's the most expensive on your monthly budget right now but cheapest overall.
Interest-Only Repayment
While in school, you pay only the interest that accrues each month. Principal payments don't start until after graduation or when you drop below half-time enrollment. This prevents your loan balance from ballooning during school. It's a middle ground: lower monthly payments now, but interest capitalizes later.
Deferred Repayment
No payments (principal or interest) while in school. You don't owe anything until six months after graduation. But interest continues to accrue and gets added to your loan balance, so your loan grows substantially. This option is cheapest monthly in school but costs the most overall.
Graduated/Fixed Repayment
A standard payment schedule lasting 10–25 years. Monthly payments don't change. Most borrowers choose this path after school ends.
Hardship and Forbearance: What Happens If Life Gets Tough
Federal loans come with income-driven repayment plans and public service forgiveness. Private loans don't have these protections.
If you face financial hardship, private lenders may offer forbearance—pausing or reducing payments temporarily—but these programs are discretionary and vary by lender. Some lenders are more generous than others. Before you borrow, ask each lender what hardship options they offer. It matters if your job situation becomes uncertain.
The Credit Score Impact
Taking out a private loan does affect your credit. Here's what happens:
- New hard inquiry: When you apply, the lender checks your credit, which temporarily lowers your score by a few points.
- New account: Your new loan adds to your credit mix, which usually helps long-term.
- Payment history: Once you start repaying, making on-time payments builds your credit. Missing payments tanks it.
The key: you and your cosigner should only apply when you're truly ready to borrow. Multiple applications in a short time look bad to lenders.
Comparing the Major Lenders: What Each Brings to the Table
Here's how the five most popular private lenders stack up in 2025-26:
Sallie Mae
- Fixed APR: 4.15%–15.49%
- Variable APR: 5.37%–15.70%
- Cosigner release: 12 on-time payments
- Standout features: Rewards for making in-school payments with slightly lower interest rates; serves part-time and less-than-half-time students
Ascent
- Fixed APR: 2.69%–15.26%
- Cosigner release: 12 months of payments
- Standout features: Non-traditional eligibility based on future income potential, not just credit history
College Ave
- Fixed APR: 3.99%–17.99%
- Standout features: Covers up to 100% of school-certified cost of attendance; flexible repayment terms
SoFi
- Fixed APR: 4.19%–14.83%
- Variable APR: 5.74%–14.83%
- Cosigner release: 24 on-time payments
- Standout features: No origination fees, no late fees; 9-month grace period after graduation
Earnest
- Fixed APR: Varies (typically 4%–14%)
- Standout features: No origination or late fees; option to skip one payment per year; 9-month grace period
For the lowest rates, you'll need strong credit (650+ minimum, 700+ for best rates). Each lender has different tolerances for students with lower credit scores.
Challenges and Roadblocks to Watch
- Rate shopping takes time. You'll get your best rate after comparing at least 3–4 lenders. Don't settle on the first quote.
- Your cosigner's finances matter as much as yours. If they have debt or recent late payments, your rate suffers. Have that conversation before applying.
- Interest accrues aggressively during deferred repayment. If you choose not to pay while in school, your loan balance can grow 20%–30% by graduation. Do the math before choosing this option.
- Private loans don't adjust if income drops. A job loss doesn't lower your payment like it would with federal income-driven plans. Hardship programs exist but aren't guaranteed.
- Variable rates can rise sharply. A 3.5% introductory variable rate can jump to 8% or higher when market conditions shift. Lock in fixed if you can.
The Bottom Line
Choosing between private lenders means comparing APR (not interest rate alone), understanding fixed vs. variable, and checking cosigner release policies. Most families should exhaust federal loans first—federal rates are fixed for all borrowers and come with income-driven repayment and forgiveness options that private loans never will.
When you do borrow private, Sallie Mae, Ascent, College Ave, SoFi, and Earnest all have strengths depending on your situation. Cosigner release timelines range from 12 to 24 months. Fees vary, so ask about origination and late fees upfront. And pick your repayment plan based on your budget now and how much you want to minimize total interest over time.
The lowest rates go to borrowers with strong credit and income—or strong cosigners. Everyone else pays more. That's the reality. So before you commit to private loans, make sure you've exhausted federal options and that your cosigner truly understands the responsibility they're taking on.
Ready to map out your college financing strategy? Start with CollegeLens to see all your options in one place.
— Sravani at CollegeLens