Student Loan Refinance Calculator
Breakeven analysis: compare refinance rate and savings versus the federal protections you would lose.
Student Loan Refinancing: The Complete Guide
Refinancing means taking out a new private loan to pay off one or more existing loans, ideally at a lower interest rate. This calculator helps you see the break-even point: how long it takes for the lower rate to outweigh any upfront costs, and how much total interest you save or lose versus staying put.
What refinancing does and doesn't do
It can lower your rate and payment if you have strong credit and stable income. But it converts federal loans to private, permanently removing income-driven repayment, PSLF, deferment, forbearance, death and disability discharge, and borrower-defense rights. Weigh that lost safety net, not just the interest rate.
The break-even calculation
Break-even = (refinance fees) ÷ (monthly savings). If fees are $0 and you save $80/month, every month after the first is pure gain. If a loan has an origination fee, add it to the cost. The calculator shows lifetime interest under both paths so you can see the true trade-off.
Fixed vs. variable rates
A fixed rate stays the same for the life of the loan—predictable and usually safer for long terms. A variable rate may start lower but can rise with the market, raising both payment and total interest. For multi-year payoffs, fixed is the conservative choice.
When refinancing makes sense
- You have private loans at a high rate and strong credit.
- You have stable, high income and no plans to use PSLF.
- You want to release a co-signer or simplify multiple loans into one.
When it does NOT make sense
- You work (or plan to) in public service and want PSLF.
- Your income is unstable or you lack an emergency fund.
- You are on track for IDR forgiveness you intend to use.
- You have a condition that could qualify for disability discharge.
The application process
Shop multiple lenders for pre-qualification (multiple soft pulls in a short window usually count as one inquiry). Compare the APR, fees, fixed/variable, and cosigner-release terms. Only then accept and let the new lender pay off your old loans directly.
Tax note
The student loan interest deduction may apply to private-loan interest up to the annual IRS limit, with income phase-outs. Confirm current limits at IRS.gov.
Worked example
Illustrative: $40,000 in federal loans at 6.8% refinanced to 4.5% drops the payment and total interest—but the borrower gives up PSLF and IDR. If they later take a public-service job, that trade was a mistake. Model both sides here before signing.
Frequently Asked Questions
Yes, a private lender can refinance both, but you are converting federal loans to private and lose federal benefits entirely. Only do this if you are certain you won't need them.
Multiple lender pre-qualifications within a short window typically count as a single inquiry, so compare freely before committing.
Parent PLUS rarely qualifies for IDR forgiveness and can't get PSLF in the parent's name, so refinancing can be reasonable—but compare the new rate and lost discharge protections first.
Most student-loan refinances have no prepayment penalty, but always confirm in the fine print before signing.
Yes—if your credit improves or rates fall, refinancing again can lower your rate further. Re-check annually.
A fee some lenders charge to make the loan, taken off the top. It raises your effective cost and should be included in the break-even math.
Yes. You can refinance only the private or high-rate portion and keep federal loans federal to preserve IDR/PSLF options.
Many lenders fund within weeks of approval. Have your payoff statements and income proof ready to speed it up.
Sources: Federal Student Aid, IRS.gov. Educational use only.
Refinancing by Borrower Type
High-income professionals
Doctors, lawyers, and engineers with six-figure incomes and strong credit often get the lowest private rates. If they have no PSLF plans, refinancing federal loans can save substantial interest. The break-even is usually fast because savings are large.
Parents with Parent PLUS
Parent PLUS loans carry higher rates and rarely qualify for IDR forgiveness; they cannot get PSLF in the parent's name. Refinancing can be reasonable to lower the rate—but the parent gives up discharge protections, so compare carefully and consider whether the child will share the payments.
Near retirement
Older borrowers with little time to recoup should be cautious. A lower rate helps only if you keep paying long enough to pass break-even. If loans are close to paid off, refinancing may not be worth the hassle or the lost protections.
Credit score impact
Your rate depends heavily on credit. A score in the high 700s or above unlocks the best offers; a weaker score may not beat your federal rate at all. Check your score and fix errors before applying, and consider a co-signer if allowed.
Co-signer release
Many private loans require a co-signer. Ask about release terms—some lenders drop the co-signer after a set number of on-time payments. Releasing a co-signer protects that person's credit and your relationship.
Common mistakes
- Chasing the lowest advertised rate while ignoring fees and variable-risk.
- Refinancing federal loans before confirming you won't need IDR or PSLF.
- Forgetting that private loans have far weaker hardship options than federal.
- Not shopping at least three lenders for the real APR.
State-level notes
Some states run their own student loan programs or have nonprofit refinancing options with borrower-friendly terms. Check your state's higher-education agency before taking a purely private offer, especially if your credit is thin.
Rate-environment strategy
When overall rates are high, a fixed federal rate looks attractive; when low, private refinancing of high-rate debt shines. Re-evaluate yearly—refinancing again after your credit improves is normal.
More Refinance Questions
There is no single cutoff, but the best rates usually go to borrowers with scores in the high 700s and steady income. Weaker credit may still qualify but at a higher rate.
You can, but remember federal loans have built-in benefits (subsidy, IDR eligibility) you'd lose. Usually wait until you've chosen a long-term strategy.
Yes—private loans have no PSLF or IDR counts, so any federal progress is abandoned. Only refinance if you've ruled out those programs.
Lenders want stable documented income, often two years of tax returns. Strong but variable income may still qualify; shop around for lenders who weigh it fairly.
Your Refinance Checklist
- Decide federal vs. private: if you might use IDR or PSLF, keep federal loans federal.
- Check your credit: review your score and fix errors before applying.
- Shop at least three lenders: compare APR, fees, fixed/variable, and cosigner release.
- Run break-even: confirm savings outweigh any fees within your timeframe.
- Read the fine print: prepayment penalty, rate caps, and autopay discounts.
- Keep federal separate: refinance only the portion where private truly wins.
Two Borrower Profiles
Profile A—high earner, no PSLF: $60,000 federal at 7% refinanced to 4.5% saves thousands and breaks even within a year. A clear win because federal benefits aren't needed.
Profile B—aspiring teacher: same balance, but plans public-service work. Refinancing would kill PSLF eligibility; staying federal and using RAP is far better. The lower private rate is a trap here.
The difference is the borrower's path, not the math alone. Always ask "will I need federal benefits?" before signing.
Related Reading
Compare plans first with our 5-Plan Comparison tool, model forgiveness with the PSLF Calculator, and read the refinance pros and cons guide for the full picture.
Bottom Line
Refinancing can save real money, but only when you don't need the federal benefits you give up. Run the break-even, keep federal loans federal if PSLF or IDR is in your future, and shop at least three lenders for the true APR. This calculator shows the lifetime-interest difference; pair it with our 5-Plan Comparison and the PSLF Calculator, and read the refinance pros and cons guide before you sign. A lower rate is only a win if the lost safety net was worth less to you.
🔄 Refinance Breakeven Calculator
Compare keeping your federal loans vs. refinancing with a private lender.
| Keep Federal | Refinance Private | |
|---|---|---|
| Monthly Payment | — | — |
| Total Remaining Cost | — | — |
| Origination Fee | $0.00 | — |
| Total Interest | — | — |
Important: this calculator produces planning estimates only. Final rates, fees, and approval are set by the private lender you choose, and federal forgiveness eligibility is determined solely by your servicer and the U.S. Department of Education. Confirm all figures with official sources before refinancing.
Related: compare your options first with the 5-Plan Comparison tool, and review the refinance pros and cons guide before committing to any private loan.