Calculate a fixed student-loan payment, total modeled payments, and interest from an entered principal, annual rate, and whole-month term.
A quick decision brief for this specific tool
One current principal balance, entered annual interest rate, and a whole-month repayment term from current loan or servicer evidence
Fixed monthly payment, entered principal and term, total modeled payments, and modeled interest
Fixed monthly amortization using the entered annual rate divided by 12, including an exact zero-interest path
Choose your path
Calculate a fixed student-loan payment from user-entered principal, annual rate, and term without imitating current federal repayment-plan eligibility or servicer decisions.
Reproduce a fixed-payment scenario from current principal and rate.
Enter the statement balance, rate, and remaining term; compare the modeled payment with the servicer record.
Can explain any mismatch and knows which accrual/capitalization terms are outside the model.
Avoid stale plan formulas during 2026 rule changes.
Use this tool only for fixed amortization, then open the current Federal Student Aid Repayment Calculator.
Does not treat this page as an eligibility or income-driven payment determination.
Verify simple boundary arithmetic on a phone.
Enter a zero rate or short whole-month term and inspect payment, total, and interest.
Gets exact zero-interest reconciliation and accessible errors for invalid inputs.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
Tools you might need next
Free online student loan refinance calculator to compare new rates, monthly savings, and total interest. See if refinancing saves you money now.
Free online college cost calculator to estimate tuition, room, board, and fees over four years. Plan education expenses with inflation-adjusted projections.
Free online student budget calculator to plan monthly college expenses for food, rent, books, and entertainment. Build a realistic campus spending plan today.
The engine divides the entered annual rate by 12 and solves one equal month-end payment. It does not claim to reproduce daily servicer accrual.
Payment = Principal × Monthly Rate ÷ [1 − (1 + Monthly Rate)^−Months]At an entered 0% rate, principal is divided evenly by the whole-month term and modeled interest is exactly zero.
Payment at 0% = Principal ÷ MonthsThe total is the unrounded payment multiplied by the entered term. Capitalization, fees, variable rates, subsidies, deferment, forgiveness, and payment allocation are outside this model.
Modeled Interest = Payment × Months − Entered PrincipalUpdated: August 2026
Model a fixed payment from the current principal, annual rate, and remaining term shown in current records.
→ A reproducible fixed-payment scenario with payment, total, and interest shown separately.
Verify a no-interest institutional or promotional balance without hidden rate assumptions.
→ $250 monthly payment, $12,000 total, and $0 modeled interest.
Use current federal records when eligibility, income, loan type, disbursement date, or forgiveness affects repayment.
→ No Enbilex output is treated as plan eligibility or a servicer payment determination.
This is a bounded fixed-amortization calculator, not a federal repayment-plan selector. It uses only the current principal, annual rate, and whole-month term you enter. Federal plan eligibility and final payment terms depend on current rules, loan records, and the servicer, so use the linked Federal Student Aid calculator for those decisions.