Key Points
- Most major student loan refinance lenders require a FICO score of about 650 to 680 to qualify, but the lowest advertised rates are typically reserved for borrowers with scores of 740 or higher.
- Top lenders covered range from no published minimum (SoFi) to a 720 floor (Brazos), with most clustering between 660 and 680.
- Lender disclaimers consistently state that advertised “starting rates” require the shortest repayment term, autopay enrollment, and the strongest credit and income profiles, meaning the rate in the headline is rarely the rate the average borrower receives.
The credit score needed to refinance student loans is one of the most common questions borrowers ask before applying.
The short answer: most lenders want a FICO score in the mid-600s as a baseline, but the headline rates you see in marketing materials are almost always reserved for applicants with scores over 750, paired with strong income, a low debt-to-income ratio, autopay enrollment, and a willingness to take the shortest repayment term.
That gap between the floor to qualify and the profile needed to actually get the best rate is where most borrowers get tripped up. Knowing where the major lenders draw the line, and what the fine print says about who wins the lowest rates, is the difference between saving money and potentially having your student loan refinance not be worthwhile.
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The General Minimum To Refinance Is 650 To 680
Across the major refinance lenders, the minimum credit score generally falls between 650 and 680. The FICO model defines a “good” credit score as 670 to 739, which lines up with what most lenders publish or imply as their cutoff. Borrowers with scores below 650 usually face denial, materially higher rates, or a requirement to add a creditworthy cosigner.
Credit score is not the only factor. Lenders also look at income (often $35,000 to $42,000 minimum), debt-to-income ratio (frequently capped at 50% to 65%), employment history, citizenship or permanent residency, and degree completion. Several lenders apply stricter rules for borrowers who never finished the program their loans paid for, but some lenders do offer student loan refinancing without a degree.
What Top Student Loan Refinance Lenders Require
The College Investor analyzed each major lender's disclosures to see where they stand on minimum credit score, based on their published eligibility pages:
Earnest: 665 minimum for borrowers with a completed degree. Borrowers who did not finish the program tied to their loans need at least 700. Earnest also reviews savings, employment, and payment history.
ELFI: 680 minimum. Additional requirements include a bachelor’s degree, $35,000 minimum annual income, $10,000 minimum loan balance, and a debt-to-income ratio below 55%.
LendKey: 680 minimum across its network of credit unions and community banks, with a $36,000 income requirement. Individual partner lenders within the network may set higher thresholds.
Citizens: No published minimum, but underwriting points toward scores near 700 or higher. Other requirements include $24,000 minimum income, a bachelor’s degree, and at least $10,000 in eligible loans.
Brazos: 720 without a cosigner, 690 with one. Brazos serves only Texas residents (or those who attended a Texas school) and requires $60,000 in income without a cosigner.
SoFi: No officially disclosed minimum. Industry reporting points to an effective floor near 650 to 680, but the average approved borrower carries a score around 766. SoFi underwrites holistically, weighing income and financial history alongside credit.
How To Actually Qualify For The Best Rates
Every refinance lender advertises a starting APR, and every lender includes language in the footer or rate disclosure that limits who actually qualifies for that number. The common pattern is roughly the same across every lender: the lowest rates are available only to applicants who meet several conditions at the same time.
To get the lowest published APR, lenders typically require:
- The most creditworthy applicant profile, generally interpreted as a FICO score of 740 or higher paired with strong income and a low debt-to-income ratio.
- The shortest available repayment term, often a 5-year fixed-rate or variable-rate loan. Longer terms (10, 15, or 20 years) carry higher rates.
- Enrollment in automatic payments, which usually triggers a 0.25 percentage-point rate reduction. Drop autopay and the rate goes back up.
- A strong credit history and verifiable employment income.
Without all of those boxes checked, the rate offered will be higher than the headline number, sometimes by several percentage points.
What Borrowers Should Know
For a typical borrower carrying $40,000 in student loans, the difference between qualifying at the starting interest rate and the middle of a lender’s range can run thousands of dollars over the life of the loan. That makes raising your credit score before applying one of the highest-return moves a borrower can make.
A few practical steps:
- Pull your credit report and FICO score before you apply. Free access is available through AnnualCreditReport.com and most major card issuers.
- Use soft-pull prequalification tools. Most major refinance lenders (including Earnest, ELFI, and Splash) let you check estimated rates without a hard inquiry on your credit report.
- Pay down revolving balances first. Credit utilization is one of the fastest-moving inputs to a FICO score, and bringing card balances under 30% (and ideally under 10%) of available credit can move scores quickly.
- Consider a creditworthy cosigner. Several lenders, including Brazos, drop the minimum score requirement when a cosigner is added.
- You generally shouldn't refinance federal student loans. Moving federal loans into a private loans eliminates access to income-driven repayment, Public Service Loan Forgiveness, and federal hardship options. That trade-off has to be weighed against the rate savings.
Common Questions
What credit score do you need to refinance student loans?
Most lenders look for a credit score in the mid-600s at minimum to qualify for student loan refinancing, though approval also depends on your income, debt-to-income ratio, and whether you have a cosigner.
What credit score is required to get the lowest advertised interest rates on a refinanced student loan?
The lowest advertised rates are typically reserved for borrowers with excellent credit—generally a score in the 700s or higher—plus strong income and a low debt-to-income ratio.
What do you lose if you refinance federal student loans into a private loan?
You permanently give up federal protections including income-driven repayment plans, Public Service Loan Forgiveness, generous deferment and forbearance options, and any future federal forgiveness or relief programs.
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Editor: Colin Graves
Robert Farrington is the founder of The College Investor and is widely recognized as one of the nation’s leading voices on student loan debt and saving for college. He holds an MBA from UC San Diego Rady School of Management and has spent over 15 years researching, writing, and advising on student loans, 529 plans, financial aid programs, and saving and investing for young professionals.
Robert has been featured in the The New York Times, The Wall Street Journal, The Washington Post, NBC News, and Forbes, where he has been a regular personal finance contributor for over a decade. His work combines both professional expertise and personal experience – he successfully navigated his own student loan repayment journey and has helped thousands of readers do the same.
He is committed to making the intersection of personal finance and education transparent and accessible. You can learn more about Robert on the About Page or on his personal site RobertFarrington.com.