Current Loan
Refinanced Loan
August 2026 refinance rates: fixed from ~3.95% APR, variable from ~3.62% APR (top lenders: Credible, Earnest, LendKey, ELFI, Splash).
Refinance Savings
Enter your loan details and click calculate.
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Introduction
Refinancing a student loan in 2026 is a rate play, and the rates have moved enough to matter. As of August 2026, the top refinance lenders (Credible, Earnest, LendKey, ELFI, and Splash) advertise fixed rates starting around 3.95% to 3.99% APR and variable rates from 3.62% to 4.19% APR with autopay discounts, according to The College Investor rate tracker. Against a federal Direct PLUS loan at 8.05% or a graduate unsubsidized loan at 7.05%, that spread can save tens of thousands over a 10-year term. The catch is that refinancing federal loans into a private loan forfeits income-driven repayment, Public Service Loan Forgiveness, and the federal safety net, so the math only makes sense for private loans or for federal borrowers who do not need those protections. The Federal Student Aid repayment page lays out what you give up.
What This Calculator Does
This tool estimates how much you save by refinancing one or more student loans to a lower rate. Enter your current balance, current loan type (or a custom rate), and remaining term, then enter the new refinance rate and term. It calculates your current and new monthly payment, total interest over each term, and the total interest saved. It uses August 2026 refinance rate benchmarks so you can see whether the savings justify giving up federal protections.
The Formula
Both the current loan and the refinanced loan use the standard amortization formula. The savings come entirely from the rate difference and any term change. A lower rate with the same term saves interest without changing the payment much. A longer term lowers the monthly payment but can increase total interest even at a lower rate, so compare total interest, not just the monthly number. The calculator shows both so you can see the trade-off.
Step-by-Step Example
Enter your loan balance
A dentist with $45,000 of Direct PLUS loans at 8.05% enters 45000.
Pick your current loan type
She selects Direct PLUS (Parent/Grad) at 8.05%, the highest common federal rate.
Enter the refinance offer
She qualifies for a 4.5% fixed refinance over 10 years and enters 4.5% and 10 years.
Read the savings
Total interest drops from about $20,400 to about $9,800, saving roughly $10,600 over the term, with a monthly payment cut of about $90.
Real-World Use Cases
Private Loan Rate Reduction
A borrower with a 9% private student loan refinances to a 4.5% fixed rate, cutting total interest by more than half over a 10-year term with no federal protections to lose.
Federal PLUS Loan Refinance
A parent with Direct PLUS loans at 8.05% (which are ineligible for most IDR plans) refinances to a 4% private rate, since the lost federal protections are limited for PLUS borrowers.
Co-Signer Release Planning
A borrower refinances to release a parent co-signer from a private loan while locking in a lower rate, achieving two goals in one transaction.
Common Mistakes to Avoid
Refinancing federal loans you might need IDR or PSLF for. Once you refinance federal loans into a private loan, you cannot undo it. If you work in public service, plan to use income-driven repayment, or face income instability, the federal protections are usually worth more than the rate savings.
Chasing the advertised rate. The 3.95% APR you see advertised is the floor, not the offer. Most borrowers land 2 to 4 points higher depending on credit and income. Get real quotes from 4 to 5 lenders before you estimate savings.
Extending the term to lower the payment. Stretching a 10-year loan to 20 years at a lower rate can cut your monthly payment but increase total interest. Compare total interest, not just the monthly number, before you accept a longer term.
Ignoring variable-rate risk. Variable rates start lower than fixed but can rise with the Fed. If you cannot absorb a payment increase, take the fixed rate even if it starts higher.
Frequently Asked Questions
What are the best student loan refinance rates in August 2026?
As of August 6, 2026, the lowest advertised fixed rates are around 3.95% to 3.99% APR (Credible, Earnest, LendKey) and the lowest variable rates start around 3.62% to 4.19% APR, all with autopay discounts. The rate you actually get depends on your credit score, income, debt-to-income ratio, and the loan term.
Should I refinance my federal student loans?
Only if you do not need income-driven repayment, Public Service Loan Forgiveness, or federal forbearance and deferral protections. Refinancing federal loans into a private loan is irreversible and forfeits all federal benefits. It makes the most sense for private loans, federal PLUS loans (which have limited IDR access), or high-income borrowers who will pay the loans off regardless.
How much can I save by refinancing?
It depends on the rate spread and balance. Refinancing $45,000 from 8.05% to 4.5% over 10 years saves roughly $10,000 to $11,000 in total interest. The larger the balance and the bigger the rate difference, the more you save. Use the calculator with your actual balance and quoted rate.
Does refinancing hurt my credit score?
Refinancing triggers a hard credit inquiry (a small short-term dip) and replaces one loan with another, which can briefly lower your average account age. The long-term effect is usually neutral or positive if you make on-time payments. Shopping multiple lenders within a 14-to-45-day window counts as a single inquiry for rate shopping under FICO rules.
Accuracy and Disclaimer
This calculator uses August 2026 advertised refinance rates, which are the floor, not a guaranteed offer. Your actual rate depends on your credit profile, income, and lender. Refinancing federal student loans into a private loan permanently forfeits federal protections including income-driven repayment, Public Service Loan Forgiveness, and federal forbearance. This is not financial advice. Consult a qualified financial advisor or your loan servicer before refinancing federal loans.
Conclusion
Refinancing is a one-way door for federal loans, so run the savings here and weigh them against the IDR, PSLF, and forbearance protections you would lose. For private loans or high-rate federal PLUS and grad loans, the savings are often clear. To compare the federal repayment alternatives before you decide, pair this with our Student Loan IDR Estimator and the Student Loan Payoff Calculator.
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