Student Loan Calculator
Calculate monthly student loan payments, total interest charges, and payoff schedules while evaluating how extra monthly payments accelerate debt payoff.
Loan Parameters
Repayment Summary
Embed this Tool on Your Website
Copy this code snippet to add the Student Loan Calculator to your blog or website for free. It adjusts dynamically to mobile and desktop screens.
How to Use Student Loan Calculator
Student Loan Calculator Formula / How It Works
This calculator uses standard loan formulas to compute fixed monthly payments. It runs an iterative month-by-month ledger simulation to apply additional principal payments, recalculating interest reduction and tracking balance decreases dynamically.
For example, financing a $30,000 student loan at 5% APR over 120 months results in a monthly payment of $318.20 and a total interest cost of $8,183.59.
Frequently Asked Questions
This calculator models standard fixed-rate repayment for federal subsidized/unsubsidized loans, PLUS loans, and private student loans. Enter the loan balance, interest rate, and repayment term to see monthly payments and total interest.
No. Income-driven repayment plans (IDR) such as SAVE, IBR, PAYE, or PSLF have different logic based on income, family size, and loan forgiveness — they are beyond the scope of a standard calculator. Use the Federal Student Aid Loan Simulator (studentaid.gov) for IDR estimates.
Extra payments go directly toward reducing the principal balance, which reduces the interest that accrues going forward. This shortens your repayment period and reduces total interest paid. Even $50–$100 extra per month can save thousands in interest over a 10-year term.
Yes, for standard fixed-rate loans. Both federal and private loans use the same monthly payment formula when on a fixed repayment plan. Variable-rate private loans may change over time; model them using your current rate as a starting point.
Federal student loans have origination fees (typically 1%–4%) that reduce the disbursed amount. If you want to include this, reduce your loan amount input by the fee percentage. Capitalized interest (unpaid interest added to principal during deferment) should be added to your starting balance manually.
Student Loan Calculator Scenarios and Examples
Explore realistic student loan scenarios demonstrating how loan amount, interest rate, loan term, and repayment assumptions may affect monthly payments and total repayment cost.
How Much Student Loan Can I Afford?
Estimate an affordable education loan balance based on standard monthly payment guidelines and entry-level salary benchmarks.
How Loan Term Affects Monthly Payments and Total Interest
Compare 5-year, 10-year, 15-year, 20-year, and 25-year repayment terms to see the trade-off between monthly payment and total interest paid.
How Interest Rate Changes Your Student Loan Cost
See how varying fixed interest rates alter your monthly installment, lifetime borrowing charges, and total loan cost.
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Learn More & In-Depth Guides
How to Calculate a Loan Amortization Schedule Step-by-Step
Deep-dive into how amortization splits each payment month by month.
APR vs. Stated Interest Rate: Why the Difference Matters
Understand the critical difference between nominal rate and APR when evaluating education loans.
