Student Loan Payoff Calculator
Plan your student loan payoff with 2025-2026 federal interest rates, extra payment modeling, and a full amortization schedule.
Federal student loan interest rates for the 2025-2026 academic year. Rates are set annually by Congress based on the 10-year Treasury note yield.
Payoff Results
Enter your loan details and click calculate.
What This Calculator Does
This student loan payoff calculator models your repayment timeline and total cost using 2025-2026 federal student loan interest rates. It supports extra monthly payments, shows time and interest saved, and generates a year-by-year amortization schedule.
The Formula
The standard amortization formula calculates the fixed monthly payment needed to pay off a loan over a set term. Each payment covers interest on the remaining balance plus a portion of principal. Extra payments reduce the principal faster, shortening the loan term and reducing total interest paid.
Step-by-Step Example
Enter loan details
Loan balance: $35,000. Interest rate: 5.50% (2025-2026 federal undergraduate rate). Loan term: 10 years.
Calculate base payment
Standard monthly payment: $379.72. Total interest over 10 years: $10,566.
Add extra payments
Adding $100/month extra. New payoff time: 7 years 4 months. Total interest: $7,413.
Review savings
Extra payments save $3,153 in interest and pay off the loan 2 years 8 months early.
Real-World Use Cases
Repayment Strategy Comparison
Compare standard 10-year repayment against accelerated payoff with extra payments to see the long-term interest savings.
Budgeting After Graduation
Plan monthly budgets by knowing exactly what your student loan payment will be under different repayment scenarios.
Refinancing Analysis
Compare your current federal rate against private refinance offers to determine if refinancing saves money over the remaining term.
Common Mistakes to Avoid
Refinancing federal loans to private loans without considering the loss of income-driven repayment plans, forbearance options, and potential loan forgiveness programs.
Making extra payments without specifying they should apply to principal. Contact your servicer to ensure extra payments reduce the balance, not prepay future installments.
Ignoring the interest rate difference between subsidized and unsubsidized loans. Prioritize paying off higher-rate unsubsidized loans first.
Not considering income-driven repayment plans if your monthly payment exceeds 10% of discretionary income.
Frequently Asked Questions
Accuracy and Disclaimer
This calculator uses 2025-2026 federal student loan interest rates. Actual repayment amounts depend on your specific loan terms, servicer policies, and repayment plan. Federal loan programs and forgiveness rules are subject to legislative changes.
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