Student loan refinancing — replacing existing loans with a new loan at a lower interest rate — can save thousands of dollars in interest over the life of the loan and accelerate payoff significantly. But it involves a trade-off that is serious enough to warrant careful evaluation before proceeding: refinancing federal loans into a private loan permanently forfeits all federal borrower protections.
• New rate is 1%+ below current
• 24+ months remaining
• Income is stable
• On income-driven repayment plan
• Income is variable or uncertain
• Rate difference is <0.5%
What Refinancing Means for Federal Loans
Federal student loans carry protections that private loans do not: eligibility for income-driven repayment plans (which cap monthly payments at a percentage of income), access to Public Service Loan Forgiveness (which forgives remaining balances after 10 years of qualifying payments for government and non-profit employees), deferment and forbearance rights during financial hardship, and death and disability discharge provisions. Refinancing a federal loan into a private loan eliminates all of these protections permanently. For borrowers pursuing PSLF or on an income-driven plan expecting forgiveness, refinancing is almost always financially harmful regardless of the rate difference.
When Refinancing Makes Sense
Refinancing produces clear financial benefit for borrowers with private student loans at high rates, or for federal loan borrowers who are certain they will not need federal protections — stable income well above the income-driven repayment threshold, no PSLF eligibility, and no anticipation of financial hardship requiring deferment. For these borrowers, a rate reduction of 1 percent or more on a significant remaining balance produces savings that justify the one-time administrative process of refinancing. The savings calculation: multiply the remaining balance by the rate difference and the number of remaining years. A $30,000 balance with a 2 percent rate reduction saves approximately $600 per year — $3,600 over six years.
How to Get the Best Rate
Refinancing rates depend primarily on credit score, income, employment stability, and the loan-to-income ratio. Checking rates from multiple lenders — Earnest, SoFi, Laurel Road, Splash Financial, ELFI — through their prequalification processes (which use a soft credit pull that does not affect the score) reveals the range available without committing to any application. The prequalification rate is the real offer; comparing across four to six lenders takes about an hour and regularly reveals a spread of 1 to 2 percent between the best and worst available rates. Applying with a creditworthy cosigner improves the rate further for borrowers with limited credit history or income.
Fixed vs Variable Rate
Refinancing lenders offer both fixed and variable rate options. Fixed rates provide certainty — the rate is locked for the loan term regardless of market changes. Variable rates start lower but can increase if benchmark rates rise. For short remaining loan terms (under three to four years), a variable rate may produce lower total interest if rates remain stable or fall. For longer terms, the certainty of the fixed rate is worth the modest premium over the variable starting rate. In the current environment, most borrowers with five or more years remaining benefit from the certainty of a fixed rate rather than the potential savings of a variable one.
