Student Loan Calculator — Monthly Payment & True Cost

Most students sign loan paperwork without fully understanding the total cost. Enter your loan amount, interest rate, and term — we'll show you your monthly payment, total interest paid, and what you're actually agreeing to. Run the numbers before you borrow.

%
Monthly Payment
Total Amount Repaid
Total Interest Paid
Interest as % of Loan
Payoff Year

Before You Borrow — Run These Numbers First

Before you borrow anything, run the numbers. Most students sign loan paperwork without really understanding what they're agreeing to — total interest paid, monthly payment after graduation, how long they'll be paying it back. This calculator shows you all of it upfront. A $35,000 loan at 6.53% over 10 years means $386/month and you'll pay back $46,300 total — $11,300 more than you borrowed. That number doesn't show up on the promissory note in bold, but it should. Know it before you sign.

Federal vs. Private Student Loans — Key Differences

The single most important thing to know about student loans: federal and private are completely different products. Here's what that actually means for you:

FeatureFederal LoansPrivate Loans
Interest rateFixed, set by Congress annuallyFixed or variable, set by lender
2025–2026 rates (UG)6.53% (Direct Subsidized/Unsubsidized)4–16% depending on credit
Income-driven repaymentAvailable (SAVE, PAYE, IBR, ICR)Not available
Public Service Loan ForgivenessEligibleNot eligible
Deferment / forbearanceGenerous, including economic hardshipLimited, lender-dependent
Bankruptcy dischargeVery difficult but possibleVery difficult
Cosigner requiredNo (except Parent PLUS)Usually, for students without credit history
Golden rule: Use up every dollar of federal eligibility (including subsidized before unsubsidized) before even looking at private loans. The protections are that much better.

Federal Student Loan Types and Limits (2026)

Loan TypeWho QualifiesAnnual LimitRate (2025–26)
Direct SubsidizedUG with financial need$3,500–$5,5006.53%
Direct Unsubsidized (UG)All UG students$5,500–$12,5006.53%
Direct Unsubsidized (Grad)Graduate students$20,5008.08%
Direct PLUS (Parent)Parents of dependent UGCost of attendance minus aid9.08%
Direct PLUS (Grad)Graduate studentsCost of attendance minus aid9.08%

Income-Driven Repayment Plans

If your loan payment after graduation would be more than you can afford on your starting salary, income-driven repayment (IDR) exists specifically for that situation. These plans cap your monthly payment as a percentage of your discretionary income, and after 20–25 years of qualifying payments, any remaining balance is forgiven (forgiven amounts may be taxable as income under current law). Here's how the main plans work:

Public Service Loan Forgiveness (PSLF)

This is one of the most genuinely valuable programs most students have never heard of properly explained. Federal borrowers working full-time for a qualifying employer — government agencies, 501(c)(3) nonprofits, public schools, public hospitals — who make 120 qualifying payments on an IDR plan get their remaining balance forgiven, completely tax-free. Not taxed as income. Gone.

If you're going into teaching, nursing, social work, government, or nonprofit work and you have federal loans, PSLF is not a small thing. On a $60,000 loan balance forgiven after 10 years, that's $60,000 you don't pay back. Qualifying employers include all government jobs at every level, public schools and universities, public hospitals, and most nonprofits. Private companies, for-profit employers, and partisan political organizations don't qualify — but a lot more jobs do than people realize.

Strategies to Actually Reduce What You Pay

Frequently Asked Questions

A widely used rule: your total student loan debt shouldn't exceed your expected first-year salary. If you expect to earn $55,000 as a starting teacher, borrowing more than $55,000 total creates genuine repayment difficulty on the standard 10-year plan. Borrowing 2x your starting salary or more is a serious risk that usually requires IDR plans and stretches repayment by decades. Run this number before you commit to a school or major — not after.
Call your loan servicer immediately — before missing payments, not after. Federal borrowers have real options: deferment (payments paused, interest may accrue), forbearance (temporary pause for financial hardship), or switching to an income-driven plan where your payment may be $0/month. Default — 9 missed payments — triggers serious consequences: credit damage, wage garnishment, tax refund seizure. There is always a better option than default, and the servicer's job is to help you find it.
Yes, up to $2,500 of student loan interest paid per year is deductible on your federal income tax return, subject to income limits ($80,000 for single filers, $165,000 for married filing jointly as of 2026 — check IRS Publication 970 for current numbers). This is an above-the-line deduction, meaning you can claim it even if you don't itemize. Most people in student loan repayment qualify for at least some of this deduction.
It's difficult but not impossible. The 2022 Brunner standard update made it somewhat easier — you need to demonstrate undue hardship through an adversary proceeding. The Department of Education's 2023 guidance introduced a more objective test considering income, expenses, and loan balance. Success rates are low but cases involving permanent disability, very low income, or very old loans have better outcomes. Talk to a bankruptcy attorney if you're in a genuinely dire situation — not as a first resort, but it's not impossible.
The math depends on your interest rate. If your student loan rate is below 5–6%, investing in a diversified index fund (historically returning 7–10% annually) likely builds more wealth long-term than aggressively paying off the loan. If your rate is above 7–8%, guaranteed loan payoff beats uncertain market returns. At 5–7%, the decision is close — factor in your risk tolerance, whether the loans are federal (preserve IDR optionality), and honestly, your peace of mind. Debt-free earlier has psychological value that the spreadsheet doesn't capture.
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