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CalcWolf Finance Student Loan Payment Calculator
Finance

Calculate Monthly Student Loan Payments

Estimate monthly payments for federal and private student loans. Standard, income-driven, and refinanced options.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

Student Loan Repayment Options

Standard (10-year): Highest monthly payment but least total interest. Best for borrowers who can afford it. Extended (25-year): Lower payments but 2-3x more total interest. SAVE Plan (income-driven): 10% of discretionary income, 20-25 year forgiveness. Best for public service workers or those with high debt-to-income ratios. Refinance: Replace federal loans with private at a lower rate — but you lose federal protections.

The True Cost of Extended Repayment

A $35,000 loan at 5.5% costs $8,613 in interest over 10 years (standard) but $25,947 over 25 years (extended). The lower monthly payment ($152 vs $380) saves you $228/month but costs an extra $17,334 in total interest. If you choose extended repayment, make extra payments whenever possible to reduce the interest burden.

⚡ CalcWolf Insight

The average 2024 graduate carries $29,400 in student loan debt. At the standard 10-year repayment, that is $319/month. Every $100/month in extra payments cuts the payoff time by 3-4 years and saves $3,000-5,000 in interest. Even small extra payments have an outsized impact.

Frequently asked questions
Should I pay off student loans or invest?
If your loan interest rate is above 6-7%, pay it off first — guaranteed return beats market uncertainty. Below 4%, invest (especially in a 401k with employer match). Between 4-6%: split extra money 50/50 between loan payments and investing. Always get the full employer 401k match regardless of loan rate.
Is refinancing student loans worth it?
If you have strong credit (720+), stable income, and do not need federal protections (IDR, PSLF), refinancing can save thousands. A rate reduction from 6.5% to 4% on $35,000 saves $4,500 in interest over 10 years. Never refinance federal loans if you are pursuing Public Service Loan Forgiveness.
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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Found a bug or outdated data? Reports go directly to Kevin and are reviewed personally.