Refinancing Savings Summary
Student Loan Refinancing Savings Calculator
What This Calculator Does and Why It Is Useful
Student loan refinancing means taking out a new private loan to pay off one or more existing loans — ideally at a lower interest rate. The savings can be substantial for borrowers with good credit and steady income. But refinancing also has trade-offs, especially if you are giving up federal loan protections to get a lower rate.
This free Student Loan Refinancing Savings Calculator shows you your current monthly payment, your new monthly payment after refinancing, the monthly difference, and — most importantly — your total net lifetime savings after accounting for any refinancing fees or origination costs. It gives you the numbers you need to make a clear, confident decision.
According to the Consumer Financial Protection Bureau, refinancing can lower your interest rate but private refinancing means losing access to federal protections like income-driven repayment, deferment, and loan forgiveness programs.
How to Use This Calculator
Step-by-Step Instructions
- Enter your current loan balance in the first field.
- Enter your current interest rate as a percentage.
- Enter the remaining term of your current loan in months — for example, 10 years left equals 120 months.
- Enter the new interest rate you have been offered by a refinancing lender.
- Enter the new loan term in months that you would choose for the refinanced loan.
- Enter any refinancing fees or origination costs — if the lender charges nothing, leave this at zero.
- Click Calculate Savings to see your full side-by-side comparison.
- Use the Reset button to model a different rate or term scenario.
The Formula Explained
Breaking Down the Formula
The calculator uses the standard loan payment formula for both your current and refinanced loan: Monthly Payment = P × (r × (1+r)^n) / ((1+r)^n − 1), where P is the balance, r is the monthly interest rate (annual rate divided by 12), and n is the number of monthly payments. It then multiplies each payment by the number of months to get total cost, adds your refinancing fees to the new loan's total, and subtracts to find your net savings.
If you have capitalized interest from a deferment sitting on your loan, make sure to use your actual current balance (including that capitalized interest) as the starting figure. You can calculate exactly how much that is using our Student Loan Interest Capitalization Calculator before refinancing.
Example Calculation with Real Numbers
A borrower has a $45,000 loan at 7.5% with 10 years (120 months) remaining. Their current monthly payment is approximately $534 and total remaining cost is $64,080. They refinance at 5.2% for the same 10-year term with no fees. Their new payment drops to about $482, saving $52 per month. Over 120 months, the total paid becomes $57,840 — a net lifetime savings of $6,240. That is a meaningful amount even on a mid-sized loan.
When Would You Use This
Real Life Use Cases
Refinancing makes the most sense when interest rates have dropped since you took out your loans, your credit score has improved significantly since graduation, or you have consolidated multiple loans with high rates into one simpler payment. It is less useful if you are pursuing Public Service Loan Forgiveness or rely on income-driven repayment flexibility, since refinancing removes those federal options permanently.
If you are also comparing federal repayment plan options, our Income-Driven Repayment IDR Plan Calculator can show you what you would pay under federal plans versus what refinancing would cost, helping you weigh both paths.
Specific Example Scenario
A software engineer four years out of college has $60,000 in loans at an average 6.8% rate. They refinance with a top-rated private lender at 4.9% for 10 years with no origination fee. The calculator shows a monthly savings of $65 and a lifetime savings of about $7,800. Because they work in the private sector with no plans for loan forgiveness, refinancing is clearly the right financial move in this case.
Tips for Getting Accurate Results
Use Your Payoff Balance, Not Your Original Loan Amount
Your remaining balance after years of payments is lower than your original loan. Log into your servicer account and use the current payoff balance — not the original disbursed amount. Using the wrong figure will make your savings estimate inaccurate, sometimes by thousands of dollars.
Compare the Same Loan Terms, Not Just the Rate
Extending your term from 10 years to 20 years might lower your monthly payment significantly, but you could pay more in total even at a lower rate. Always compare scenarios where you keep the same remaining term. A lower rate with the same term is a clean win. Extending the term adds nuance that this calculator will clearly display in the total cost rows.
Check Lender Fees Before Trusting the Rate Quote
Some lenders advertise very low rates but attach origination fees of 1% to 3% of the loan balance. A $40,000 loan with a 2% origination fee adds $800 in upfront cost. Enter this into the fees field to see the true net savings after the fee. NerdWallet's student loan refinancing comparison is a helpful resource for comparing fee structures across lenders.
Frequently Asked Questions
What is student loan refinancing?
Refinancing is the process of taking out a new private loan to pay off your existing student loans. The goal is usually to get a lower interest rate, reduce your monthly payment, or simplify multiple loans into one. The new loan is issued by a private lender and replaces your old loan or loans entirely.
Can I refinance federal student loans?
Yes, you can refinance federal loans into a private loan. However, doing so means permanently giving up federal protections including income-driven repayment plans, Public Service Loan Forgiveness eligibility, and federal deferment or forbearance options. This trade-off should be considered carefully before refinancing federal loans.
How much can refinancing save me?
Savings depend on your balance, the rate difference, and your remaining term. A borrower with $50,000 in loans who drops from 7% to 5% over 10 years can save roughly $6,000 to $8,000 in total interest. Larger balances and bigger rate drops produce larger savings. Use the calculator to get your specific numbers.
What credit score do I need to refinance student loans?
Most top refinancing lenders require a credit score of at least 650 to qualify, though the best rates typically go to borrowers with scores of 720 or higher. A strong debt-to-income ratio and steady employment also matter. If your score is lower, a cosigner with good credit may help you qualify for better rates.
Are there fees to refinance student loans?
Many lenders charge no origination fees, which makes refinancing very low-cost. Some do charge fees ranging from 1% to 3% of the loan amount. Always ask about fees before signing anything, and factor them into your savings calculation using the fees field in this calculator.
Does refinancing affect my credit score?
Applying for refinancing involves a hard credit inquiry, which can temporarily lower your score by a few points. Shopping multiple lenders within a short 14 to 30-day window typically counts as a single inquiry under most credit scoring models. The long-term impact of successfully refinancing is usually neutral to positive as your payment history builds.
Can I refinance parent PLUS loans?
Yes, parent PLUS loans can be refinanced into a private loan. Some lenders even allow the loan to be transferred into the student's name upon refinancing. If this applies to your situation, our Parent PLUS Loan Refinance Savings Calculator is specifically designed for that scenario.
What is a good interest rate for refinancing student loans?
As of recent years, competitive refinancing rates for borrowers with strong credit have ranged from roughly 4% to 7% depending on whether the rate is fixed or variable and the loan term. A good rate is one that is meaningfully lower than your current rate — typically at least 0.5% to 1% lower to justify the process.
Conclusion
Student loan refinancing can be one of the most impactful financial moves a graduate makes, but only when the numbers genuinely work in your favor. This calculator takes the guesswork out of the comparison and shows you exactly what you stand to gain — or lose — before you commit to a new loan.
Run your numbers, compare a few rate scenarios, and make sure to account for any fees. For federal loan borrowers, weigh the value of the protections you would give up against the savings shown here. Refinancing is a powerful tool when used at the right time with the right information.