Tool · Investor Sam Edu

Student Loan Refinance Savings Calculator

June 30, 2026 • By the Investor Sam Editorial Team • Reviewed by Berly Sam Varghese, Editor
Refinancing a student loan swaps your current interest rate and term for new ones, usually with a private lender. It can save real money when rates have dropped or your credit has improved, but a longer new term can quietly raise total interest even as the monthly payment falls. This calculator compares your current loan against a refinanced one so you can see both the monthly relief and the true lifetime cost before you sign.

Example: Current loan balance: 40000 $ · Current interest rate (APR): 7.5 % · Months left on current loan: 120 months · New refinanced rate (APR): 5.25 % · New loan term: 10 years

Total lifetime savings$5,477
Monthly payment savings$46
New monthly payment$429
Current loan total cost$56,977

Worked example

Say you owe $40,000 at 7.5% with 120 months left, paying about $475 a month for roughly $57,000 total. Refinancing to 5.25% over a fresh 10-year term drops the payment to about $429 a month and roughly $51,500 total. That is about $46 a month and around $5,500 saved over the life of the loan — but only because the new term is the same 10 years, not longer.

Frequently asked questions

Does a lower monthly payment always mean savings?

No. Stretching the loan over a longer term lowers the monthly payment but can increase total interest, because you pay for more months. This tool shows both numbers so you can see whether a smaller payment is real savings or just a longer, costlier loan.

What do I give up refinancing federal loans?

Refinancing federal loans into a private loan permanently forfeits federal protections: income-driven repayment, deferment, forbearance, and forgiveness programs like PSLF. Only refinance federal loans if you are confident you will never need those safety nets.

What rate can I expect?

Refinance rates depend on your credit score, income, loan term, and whether you choose fixed or variable. Get real quotes from several lenders — most offer a soft-credit prequalification — and enter the actual rate you are offered rather than a guess.

Are there fees to refinance a student loan?

Reputable student loan refinance lenders usually charge no origination or prepayment fees, but always confirm. If a lender does charge fees, subtract them from the savings this calculator shows to judge whether the deal is still worthwhile.

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Sources

Berly Sam Varghese · Editor, Investor Sam

Berly Sam Varghese is an engineer who treats money the way he treats any hard problem — something to be engineered, not gambled on. He funded years of education and built real financial stability the patient way, by living below his means and investing rather than borrowing. He writes for the person weighing what an education is really worth. He reviews and approves every article on Investor Sam and checks the figures against primary sources before anything is published. More about our standards.