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Fixed- or Variable-Rate Student Loan: Which Is Better?
Fixed rate student loans are a safer choice than those with variable rates.
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Updated · 2 min read
How is this page expert verified?
NerdWallet's content is fact-checked for accuracy, timeliness and relevance. It undergoes a thorough review process involving writers and editors to ensure the information is as clear and complete as possible.
Eliza Haverstock is NerdWallet's higher education writer, where she covers all aspects of college affordability and student loans. Previously, she reported on billionaires and investing for Forbes in New York, and she also covered private markets for PitchBook in Seattle. Eliza got started at her college newspaper at the University of Virginia and interned for Bloomberg, where she spent a summer writing a feature story about plastic straws. She is based in Washington, D.C.
Kim Lowe is Head of Content for NerdWallet's Personal and Student Loans team. She joined NerdWallet in 2016 after 15 years at MSN.com, where she held various content roles including editor-in-chief of the health and food sections. Kim started her career as a writer for print and web publications that covered the mortgage, supermarket and restaurant industries. Kim earned a bachelor's degree in journalism from the University of Iowa and a Master of Business Administration from the University of Washington. She works from her home near Portland, Oregon.
Ryan Lane is an editor on NerdWallet’s small-business team. He joined NerdWallet in 2019 as a student loans writer, serving as an authority on that topic after spending more than a decade at student loan guarantor American Student Assistance. In that role, Ryan co-authored the Student Loan Ranger blog in partnership with U.S. News & World Report, as well as wrote and edited content about education financing and financial literacy for multiple online properties, e-courses and more. Ryan also previously oversaw the production of life science journals as a managing editor for publisher Cell Press. Ryan is located in Rochester, New York.
Trea S. Branch is a former NerdWallet writer focused on student loan refinancing. She holds a degree in economics from the University of Michigan and a degree in business from the University of Notre Dame. Trea shared her own student loan payoff journey through a blog, which turned into a personal finance coaching business. Her goal has been to empower anyone overwhelmed by student debt.
Lead Writer
Student loans with fixed interest rates are generally a better option than those with variable rates. That's because fixed rates always stay the same, while variable rates can change monthly or quarterly in response to economic conditions.
Variable-rate loans may offer a lower rate at first, but that rate could change during the years you’ll spend repaying the loan.
If you’re unsure which type of rate to choose, go with fixed. Even in a high-rate environment, fixed rates are safer. Choosing a variable rate risks higher rates, and anticipating when student loan interest rates will change and which direction they’ll move is never easy.
NerdWallet ratingNerdWallet's ratings are determined by our editorial team. The scoring formula for student loan products takes into account more than 50 data points across multiple categories, including repayment options, customer service, lender transparency, loan eligibility and underwriting criteria.
Fixed APR
3.47-17.99%
College Ave Student Loans products are made available through Firstrust Bank, member FDIC, First Citizens Community Bank, member FDIC, or M.Y. Safra Bank, FSB, member FDIC. All loans are subject to individual approval and adherence to underwriting guidelines. Program restrictions, other terms, and conditions apply. (1)All rates include the auto-pay discount. The 0.25% auto-pay interest rate reduction applies as long as a valid bank account is designated for required monthly payments. If a payment is returned, you will lose this benefit. Variable rates may increase after consummation. (2)As certified by your school and less any other financial aid you might receive. Minimum $1,000. (3)This informational repayment example uses typical loan terms for a freshman borrower who selects the Flat Repayment Option with an 8-year repayment term, has a $10,000 loan that is disbursed in one disbursement and a 7.78% fixed Annual Percentage Rate (“APR”): 54 monthly payments of $25 while in school, followed by 96 monthly payments of $176.21 while in the repayment period, for a total amount of payments of $18,266.38. Loans will never have a full principal and interest monthly payment of less than $50. Your actual rates and repayment terms may vary. Information advertised valid as of 3/3/2025. Variable interest rates may increase after consummation. Approved interest rate will depend on creditworthiness of the applicant(s), lowest advertised rates only available to the most creditworthy applicants and require selection of the Flat Repayment Option with the shortest available loan term.
Variable APR
4.44-17.99%
College Ave Student Loans products are made available through Firstrust Bank, member FDIC, First Citizens Community Bank, member FDIC, or M.Y. Safra Bank, FSB, member FDIC. All loans are subject to individual approval and adherence to underwriting guidelines. Program restrictions, other terms, and conditions apply. (1)All rates include the auto-pay discount. The 0.25% auto-pay interest rate reduction applies as long as a valid bank account is designated for required monthly payments. If a payment is returned, you will lose this benefit. Variable rates may increase after consummation. (2)As certified by your school and less any other financial aid you might receive. Minimum $1,000. (3)This informational repayment example uses typical loan terms for a freshman borrower who selects the Flat Repayment Option with an 8-year repayment term, has a $10,000 loan that is disbursed in one disbursement and a 7.78% fixed Annual Percentage Rate (“APR”): 54 monthly payments of $25 while in school, followed by 96 monthly payments of $176.21 while in the repayment period, for a total amount of payments of $18,266.38. Loans will never have a full principal and interest monthly payment of less than $50. Your actual rates and repayment terms may vary. Information advertised valid as of 3/3/2025. Variable interest rates may increase after consummation. Approved interest rate will depend on creditworthiness of the applicant(s), lowest advertised rates only available to the most creditworthy applicants and require selection of the Flat Repayment Option with the shortest available loan term.
NerdWallet ratingNerdWallet's ratings are determined by our editorial team. The scoring formula for student loan products takes into account more than 50 data points across multiple categories, including repayment options, customer service, lender transparency, loan eligibility and underwriting criteria.
Fixed APR
3.49-15.99%
Lowest rates shown include the auto debit discount. Advertised APRs for undergraduate students assume a $10,000 loan to a student who attends school for 4 years and has no prior Sallie Mae-serviced loans. Interest rates for variable rate loans may increase or decrease over the life of the loan based on changes to the 30-day Average Secured Overnight Financing Rate (SOFR) rounded up to the nearest one-eighth of one percent. Advertised variable rates are the starting range of rates and may vary outside of that range over the life of the loan. Interest is charged starting when funds are sent to the school. With the Fixed and Deferred Repayment Options, the interest rate is higher than with the Interest Repayment Option and Unpaid Interest is added to the loan’s Current Principal at the end of the grace/separation period. To receive a 0.25 percentage point interest rate discount, the borrower or cosigner must enroll in auto debit through Sallie Mae. The discount applies only during active repayment for as long as the Current Amount Due or Designated Amount is successfully withdrawn from the authorized bank account each month. It may be suspended during forbearance or deferment. Advertised APRs are valid as of 4/25/2025. Loan amounts: For applications submitted directly to Sallie Mae, loan amount cannot exceed the cost of attendance less financial aid received, as certified by the school. Applications submitted to Sallie Mae through a partner website will be subject to a lower maximum loan request amount. Miscellaneous personal expenses (such as a laptop) may be included in the cost of attendance for students enrolled at least half-time. Examples of typical costs for a $10,000 Smart Option Student Loan with the most common fixed rate, fixed repayment option, 6-month separation period, and two disbursements: For a borrower with no prior loans and a 4-year in-school period, it works out to a 10.28% fixed APR, 51 payments of $25.00, 119 payments of $182.67 and one payment of $121.71, for a Total Loan Cost of $23,134.44. For a borrower with $20,000 in prior loans and a 2-year in-school period, it works out to a 10.78% fixed APR, 27 payments of $25.00, 179 payments of $132.53 and one payment of $40.35 for a total loan cost of $24,438.22. Loans that are subject to a $50 minimum principal and interest payment amount may receive a loan term that is less than 10 years. A variable APR may increase over the life of the loan. A fixed APR will not.
Variable APR
4.54-14.71%
Lowest rates shown include the auto debit discount. Advertised APRs for undergraduate students assume a $10,000 loan to a student who attends school for 4 years and has no prior Sallie Mae-serviced loans. Interest rates for variable rate loans may increase or decrease over the life of the loan based on changes to the 30-day Average Secured Overnight Financing Rate (SOFR) rounded up to the nearest one-eighth of one percent. Advertised variable rates are the starting range of rates and may vary outside of that range over the life of the loan. Interest is charged starting when funds are sent to the school. With the Fixed and Deferred Repayment Options, the interest rate is higher than with the Interest Repayment Option and Unpaid Interest is added to the loan’s Current Principal at the end of the grace/separation period. To receive a 0.25 percentage point interest rate discount, the borrower or cosigner must enroll in auto debit through Sallie Mae. The discount applies only during active repayment for as long as the Current Amount Due or Designated Amount is successfully withdrawn from the authorized bank account each month. It may be suspended during forbearance or deferment. Advertised APRs are valid as of 4/25/2025. Loan amounts: For applications submitted directly to Sallie Mae, loan amount cannot exceed the cost of attendance less financial aid received, as certified by the school. Applications submitted to Sallie Mae through a partner website will be subject to a lower maximum loan request amount. Miscellaneous personal expenses (such as a laptop) may be included in the cost of attendance for students enrolled at least half-time. Examples of typical costs for a $10,000 Smart Option Student Loan with the most common fixed rate, fixed repayment option, 6-month separation period, and two disbursements: For a borrower with no prior loans and a 4-year in-school period, it works out to a 10.28% fixed APR, 51 payments of $25.00, 119 payments of $182.67 and one payment of $121.71, for a Total Loan Cost of $23,134.44. For a borrower with $20,000 in prior loans and a 2-year in-school period, it works out to a 10.78% fixed APR, 27 payments of $25.00, 179 payments of $132.53 and one payment of $40.35 for a total loan cost of $24,438.22. Loans that are subject to a $50 minimum principal and interest payment amount may receive a loan term that is less than 10 years. A variable APR may increase over the life of the loan. A fixed APR will not.
Credible lets you check with multiple student loan lenders to get rates with no impact to your credit score. Visit their website to take the next steps.
Comparing fixed vs. variable student loans
All federal student loans have fixed interest rates. It’s typically best to max out federal student loans before turning to private student loans, because federal loans have benefits like income-driven repayment plans and student loan forgiveness programs. Borrowers with private loans don’t have access to these generous borrower protections.
If you opt for a private student loan, or if you refinance your existing student loans through a private lender, you can typically choose a fixed or variable rate. Here's how to decide between them:
Pros
Cons
Fixed-rate student loans
There’s no chance your rate will increase.
Predictable monthly payments; the amount due won’t change.
Rates typically start out higher than variable rates.
You could miss out on interest savings if variable rates go lower.
Variable-rate student loans
Rates typically start out lower than fixed rates.
You could save on interest if interest rates decline.
Timing interest rate declines is tricky, and you could have a period of higher monthly payments.
Unpredictable monthly payments; the amount due could change each period.
Fixed rates are locked in for the life of the loan. The only way to change a fixed interest rate is through student loan refinancing.
Variable student loan rates are a gamble
Variable rates are subject to change throughout the life of the loan. Student loan lenders set variable rates based on the Secured Overnight Financing Rate (SOFR). Lenders determine variable rates by adding an average of the daily SOFR to a base rate. If the SOFR goes up, your rate will also increase.
The SOFR and federal funds rate tend to go in the same direction. That is why when the Federal Reserve hikes interest rates, experts anticipate variable student loan rates to follow.
Before getting a variable-rate student loan, ask lenders how often the rate is subject to change. Some adjust variable rates monthly, while others adjust every three months. Also, find out about the overall rate cap. Variable rates are often capped, but the caps can be as high as 25%.
Which rate type is better for student loan refinancing?
Refinancing can help you pay off student loans faster by decreasing your interest rate. If you plan to aggressively repay your refinanced loan, a variable rate may maximize your potential savings if interest rates fall.
But do the math first. The lowest fixed and variable rates for refinance lenders typically aren't that far apart. That means you may not pay much more with a fixed rate, and you'll be protected if your repayment plans change.
If you do opt for a variable rate and rates begin to climb, there's little downside to trying to refinance again.
