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Weighted Average Interest Rate for Student Loan Consolidation
The weighted average interest rate is used to determine your new interest rate if you decide to consolidate your federal student loans.
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Before you decide to consolidate or refinance multiple student loans, you'll want to figure out what your debt as a whole is costing you. That number — your weighted average interest rate — will help you compare money-saving options.
Weighted average interest rate calculator
Weighted average interest rate is the interest rate that represents the cost of all your loans combined. It is the weighted average of your current loans rounded up to the nearest one-eighth of one percent. The federal government uses the weighted average interest rate to determine your new interest rate if you decide to consolidate your federal student loans
For example, if you owe one student loan for $10,000 at an interest rate of 4% and another loan for $20,000 at 8%, you owe $30,000. The average interest rate would be 6%. But the weighted average interest rate — which takes into consideration the balance you owe at each interest rate — would be 6.67%.
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.
How is your weighted average interest rate used?
If you consolidate multiple federal student loans into a single loan, your new loan will carry an interest rate that is the weighted average of your current loans rounded up to the nearest one-eighth of 1 percent. The repayment term is determined by the total amount you owe. The weighted average interest rate calculator above will estimate your new direct consolidation loan payment.
If you have good credit, you can refinance both federal loans and private loans through a private lender. Use the weighted average interest rate produced by the calculator above to shop and compare student loan refinancing offers when exploring whether it's a good fit for you.
Other student loan calculators
Student loan refinance calculator: Use this calculator to compare your current loan payment or multiple payments with a refinanced student loan.
Daily student loan interest calculator: Use this calculator to estimate the amount of interest that your loan accrues daily and between payment periods.
Discretionary income calculator: Use this calculator to determine what you would pay under federal income-driven repayment plans.
Student loan calculator: Use this calculator to determine the monthly payment on new student loans you take out, federal or private.
Student loan affordability calculator: Use this calculator to determine an affordable monthly student loan payment and how much that allows you to borrow for college.
Parent plus loans calculator: Use this calculator to estimate your monthly payments on federal direct PLUS loans.
Key terms in this story
Consolidation: A process that combines multiple federal student loans into one federal loan through the Department of Education. Consolidation won’t lower your interest rate, but may be necessary for some federal loan repayment programs.
Refinance: The process of swapping out your current student loans for a new private loan with more favorable terms, like a lower interest rate. Refinancing can help save you money on your loan and can be right for people with stable finances.
Weighted average interest rate: The interest rate that represents the cost of all your loans combined. The weighted average interest rate is the weighted average of your current loans rounded up to the nearest one-eighth of one percent. It’s used to determine your new interest rate if you decide to consolidate your federal student loans.
